86Box/src/video/vid_s3.c

/*
 * 86Box	A hypervisor and IBM PC system emulator that specializes in
 *		running old operating systems and software designed for IBM
 *		PC systems and compatibles from 1981 through fairly recent
 *		system designs based on the PCI bus.
 *
 *		This file is part of the 86Box distribution.
 *
 *		S3 emulation.
 *
 *
 *
 * Authors:	Sarah Walker, <http://pcem-emulator.co.uk/>
 *		Miran Grca, <mgrca8@gmail.com>
 *
 *		Copyright 2008-2019 Sarah Walker.
 *		Copyright 2016-2019 Miran Grca.
 */
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <wchar.h>
#include <86box/86box.h>
#include <86box/device.h>
#include <86box/io.h>
#include <86box/timer.h>
#include <86box/mem.h>
#include <86box/pci.h>
#include <86box/rom.h>
#include <86box/plat.h>
#include <86box/video.h>
#include <86box/i2c.h>
#include <86box/vid_ddc.h>
#include <86box/vid_svga.h>
#include <86box/vid_svga_render.h>
#include "cpu.h"

#define ROM_ORCHID_86C911		"roms/video/s3/BIOS.BIN"
#define ROM_DIAMOND_STEALTH_VRAM	"roms/video/s3/Diamond Stealth VRAM BIOS v2.31 U14.BIN"
#define ROM_AMI_86C924			"roms/video/s3/S3924AMI.BIN"
#define ROM_METHEUS_86C928		"roms/video/s3/928.VBI"
#define ROM_SPEA_MERCURY_LITE_PCI	"roms/video/s3/SPEAVGA.VBI"
#define ROM_SPEA_MIRAGE_86C801		"roms/video/s3/V7MIRAGE.VBI"
#define ROM_SPEA_MIRAGE_86C805		"roms/video/s3/86c805pspeavlbus.BIN"
#define ROM_MIROCRYSTAL8S_805		"roms/video/s3/S3_805VL_ATT20C491_miroCRYSTAL_8s_ver1.4.BIN"
#define ROM_MIROCRYSTAL10SD_805		"roms/video/s3/MIROcrystal10SD_VLB.VBI"
#define ROM_MIROCRYSTAL20SV_964_VLB	"roms/video/s3/S3_964VL_BT485_27C256_miroCRYSTAL_20sv_ver1.2.bin"
#define ROM_MIROCRYSTAL20SV_964_PCI	"roms/video/s3/mirocrystal.VBI"
#define ROM_MIROCRYSTAL20SD_864_VLB	"roms/video/s3/Miro20SD.BIN"
#define ROM_PHOENIX_86C80X		"roms/video/s3/805.VBI"
#define ROM_PARADISE_BAHAMAS64		"roms/video/s3/bahamas64.bin"
#define ROM_PHOENIX_VISION864		"roms/video/s3/86c864p.bin"
#define ROM_DIAMOND_STEALTH64_964	"roms/video/s3/964_107h.rom"
#define ROM_PHOENIX_TRIO32		"roms/video/s3/86c732p.bin"
#define ROM_SPEA_MIRAGE_P64		"roms/video/s3/S3_764VL_SPEAMirageP64VL_ver5_03.BIN"
#define ROM_NUMBER9_9FX			"roms/video/s3/s3_764.bin"
#define ROM_PHOENIX_TRIO64		"roms/video/s3/86c764x1.bin"
#define ROM_DIAMOND_STEALTH64_764	"roms/video/s3/stealt64.bin"
#define ROM_TRIO64V2_DX_VBE20		"roms/video/s3/86c775_2.bin"
#define ROM_PHOENIX_TRIO64VPLUS		"roms/video/s3/64V1506.ROM"
#define ROM_DIAMOND_STEALTH_SE		"roms/video/s3/DiamondStealthSE.VBI"
#define ROM_ELSAWIN2KPROX_964		"roms/video/s3/elsaw20004m.BIN"
#define ROM_ELSAWIN2KPROX		"roms/video/s3/elsaw20008m.BIN"
#define ROM_NUMBER9_9FX_531		"roms/video/s3/numbernine.BIN"
#define ROM_PHOENIX_VISION868		"roms/video/s3/1-DSV3868.BIN"
#define ROM_MIROVIDEO40SV_ERGO_968_PCI	"roms/video/s3/S3_968PCI_TVP3026_miroVideo40SV_PCI_1.04.BIN"
#define ROM_SPEA_MERCURY_P64V		"roms/video/s3/S3_968PCI_TVP3026_SPEAMecuryP64V_ver1.01.BIN"
#define ROM_NUMBER9_9FX_771		"roms/video/s3/no9motionfx771.BIN"
#define ROM_PHOENIX_VISION968		"roms/video/s3/1-DSV3968P.BIN"

enum
{
	S3_NUMBER9_9FX,
	S3_PARADISE_BAHAMAS64,
	S3_DIAMOND_STEALTH64_964,
	S3_PHOENIX_TRIO32,
	S3_PHOENIX_TRIO64,
	S3_PHOENIX_TRIO64_ONBOARD,
	S3_PHOENIX_VISION864,
	S3_DIAMOND_STEALTH64_764,
	S3_SPEA_MIRAGE_86C801,
	S3_SPEA_MIRAGE_86C805,
	S3_PHOENIX_86C801,
	S3_PHOENIX_86C805,
	S3_ORCHID_86C911,
	S3_METHEUS_86C928,
	S3_AMI_86C924,
	S3_TRIO64V2_DX,
	S3_TRIO64V2_DX_ONBOARD,
	S3_PHOENIX_TRIO64VPLUS,
	S3_PHOENIX_TRIO64VPLUS_ONBOARD,
	S3_DIAMOND_STEALTH_SE,
	S3_DIAMOND_STEALTH_VRAM,
	S3_ELSAWIN2KPROX_964,
	S3_ELSAWIN2KPROX,
	S3_PHOENIX_VISION868,
	S3_MIROVIDEO40SV_ERGO_968,
	S3_MIROCRYSTAL10SD_805,
	S3_SPEA_MIRAGE_P64,
	S3_SPEA_MERCURY_P64V,
	S3_MIROCRYSTAL20SV_964,
	S3_MIROCRYSTAL20SD_864,
	S3_PHOENIX_VISION968,
	S3_MIROCRYSTAL8S_805,
	S3_NUMBER9_9FX_531,
	S3_NUMBER9_9FX_771,
	S3_SPEA_MERCURY_LITE_PCI
};


enum
{
	S3_86C911 = 0x00,
	S3_86C924 = 0x02,
	S3_86C928 = 0x04,
	S3_86C928PCI = 0x06,
	S3_86C801 = 0x07,
	S3_86C805 = 0x08,
	S3_VISION964 = 0x18,
	S3_VISION968 = 0x20,
	S3_VISION864 = 0x28,
	S3_VISION868 = 0x30,
	S3_TRIO32 = 0x38,
	S3_TRIO64 = 0x40,
	S3_TRIO64V = 0x48,
	S3_TRIO64V2 = 0x50
};


static video_timings_t timing_s3_86c911		= {VIDEO_ISA, 4,  4,  5,  20, 20, 35};
static video_timings_t timing_s3_86c801		= {VIDEO_ISA, 4,  4,  5,  20, 20, 35};
static video_timings_t timing_s3_86c805		= {VIDEO_BUS, 4,  4,  5,  20, 20, 35};
static video_timings_t timing_s3_86c928pci	= {VIDEO_PCI, 2,  2,  4,  26, 26, 42};
static video_timings_t timing_s3_stealth64_vlb	= {VIDEO_BUS, 2,  2,  4,  26, 26, 42};
static video_timings_t timing_s3_stealth64_pci	= {VIDEO_PCI, 2,  2,  4,  26, 26, 42};
static video_timings_t timing_s3_vision864_vlb	= {VIDEO_BUS, 4,  4,  5,  20, 20, 35};
static video_timings_t timing_s3_vision864_pci	= {VIDEO_PCI, 4,  4,  5,  20, 20, 35};
static video_timings_t timing_s3_vision868_vlb	= {VIDEO_BUS, 4,  4,  5,  20, 20, 35};
static video_timings_t timing_s3_vision868_pci	= {VIDEO_PCI, 4,  4,  5,  20, 20, 35};
static video_timings_t timing_s3_vision964_vlb	= {VIDEO_BUS, 2,  2,  4,  20, 20, 35};
static video_timings_t timing_s3_vision964_pci	= {VIDEO_PCI, 2,  2,  4,  20, 20, 35};
static video_timings_t timing_s3_vision968_vlb	= {VIDEO_BUS, 2,  2,  4,  20, 20, 35};
static video_timings_t timing_s3_vision968_pci	= {VIDEO_PCI, 2,  2,  4,  20, 20, 35};
static video_timings_t timing_s3_trio32_vlb	= {VIDEO_BUS, 4,  3,  5,  26, 26, 42};
static video_timings_t timing_s3_trio32_pci	= {VIDEO_PCI, 4,  3,  5,  26, 26, 42};
static video_timings_t timing_s3_trio64_vlb	= {VIDEO_BUS, 3,  2,  4,  25, 25, 40};
static video_timings_t timing_s3_trio64_pci	= {VIDEO_PCI, 3,  2,  4,  25, 25, 40};

enum
{
	VRAM_4MB = 0,
	VRAM_8MB = 3,
	VRAM_2MB = 4,
	VRAM_1MB = 6,
	VRAM_512KB = 7
};

#define FIFO_SIZE 65536
#define FIFO_MASK (FIFO_SIZE - 1)
#define FIFO_ENTRY_SIZE (1 << 31)

#define FIFO_ENTRIES (s3->fifo_write_idx - s3->fifo_read_idx)
#define FIFO_FULL    ((s3->fifo_write_idx - s3->fifo_read_idx) >= (FIFO_SIZE - 4))
#define FIFO_EMPTY   (s3->fifo_read_idx == s3->fifo_write_idx)

#define FIFO_TYPE 0xff000000
#define FIFO_ADDR 0x00ffffff

enum
{
	FIFO_INVALID     = (0x00 << 24),
	FIFO_WRITE_BYTE  = (0x01 << 24),
	FIFO_WRITE_WORD  = (0x02 << 24),
	FIFO_WRITE_DWORD = (0x03 << 24),
	FIFO_OUT_BYTE    = (0x04 << 24),
	FIFO_OUT_WORD    = (0x05 << 24),
	FIFO_OUT_DWORD   = (0x06 << 24)
};

typedef struct
{
	uint32_t addr_type;
	uint32_t val;
} fifo_entry_t;

typedef struct s3_t
{
	mem_mapping_t linear_mapping;
	mem_mapping_t mmio_mapping;
	mem_mapping_t new_mmio_mapping;

	uint8_t has_bios;
	rom_t bios_rom;

	svga_t svga;

	uint8_t bank;
	uint8_t ma_ext;
	int width, bpp;

	int chip;
	int pci, vlb;
	int atbus;

	uint8_t id, id_ext, id_ext_pci;

	uint8_t int_line;

	int packed_mmio;

	uint32_t linear_base, linear_size;

	uint8_t pci_regs[256];
	int card;

	uint32_t vram_mask;
	uint8_t data_available;

	int card_type;

	struct
	{
		uint16_t subsys_cntl;
		uint16_t setup_md;
		uint8_t advfunc_cntl;
		uint16_t cur_y, cur_y2, cur_y_bitres;
		uint16_t cur_x, cur_x2, cur_x_bitres;
		uint16_t x2, ropmix;
		uint16_t pat_x, pat_y;
		int16_t desty_axstp, desty_axstp2;
		int16_t destx_distp;
		int16_t err_term, err_term2;
		int16_t maj_axis_pcnt, maj_axis_pcnt2;
		uint16_t cmd, cmd2;
		uint16_t short_stroke;
		uint32_t pat_bg_color, pat_fg_color;
		uint32_t bkgd_color;
		uint32_t frgd_color;
		uint32_t wrt_mask;
		uint32_t rd_mask;
		uint32_t color_cmp;
		uint8_t bkgd_mix;
		uint8_t frgd_mix;
		uint16_t multifunc_cntl;
		uint16_t multifunc[16];
		uint8_t pix_trans[4];
		int ssv_state;

		int cx, cy;
		int px, py;
		int sx, sy;
		int dx, dy;
		uint32_t src, dest, pattern;

		int poly_cx, poly_cx2;
		int poly_cy, poly_cy2;
		int poly_line_cx;
		int point_1_updated, point_2_updated;
		int poly_dx1, poly_dx2;
		int poly_x;

		uint32_t dat_buf;
		int dat_count;
		int b2e8_pix, temp_cnt;
		uint8_t cur_x_bit12, cur_y_bit12;
		int ssv_len;
		uint8_t ssv_dir;
		uint8_t ssv_draw;

		/*For non-threaded FIFO*/
		int setup_fifo_slot;
		int draw_fifo_slot;
		int setup_fifo, setup_fifo2;
		int draw_fifo, draw_fifo2;
	} accel;

	struct {
		uint32_t nop;
		uint32_t cntl;
		uint32_t stretch_filt_const;
		uint32_t src_dst_step;
		uint32_t crop;
		uint32_t src_base, dest_base;
		uint32_t src, dest;
		uint32_t srcbase, dstbase;
		int32_t dda_init_accumulator;
		int32_t k1, k2;
		int dm_index;
		int dither_matrix_idx;
		int src_step, dst_step;
		int sx, sx_backup, sy;
		double cx, dx;
		double cy, dy;
		int sx_scale_int, sx_scale_int_backup;
		double sx_scale;
		double sx_scale_dec;
		double sx_scale_inc;
		double sx_scale_backup;
		double sx_scale_len;
		int dither, host_data, scale_down;
		int input;
		int len, start;
		int odf, idf, yuv;
		volatile int busy;
	} videoengine;

        struct
        {
                uint32_t pri_ctrl;
                uint32_t chroma_ctrl;
                uint32_t sec_ctrl;
                uint32_t chroma_upper_bound;
                uint32_t sec_filter;
                uint32_t blend_ctrl;
                uint32_t pri_fb0, pri_fb1;
                uint32_t pri_stride;
                uint32_t buffer_ctrl;
                uint32_t sec_fb0, sec_fb1;
                uint32_t sec_stride;
                uint32_t overlay_ctrl;
                 int32_t k1_vert_scale;
                 int32_t k2_vert_scale;
                 int32_t dda_vert_accumulator;
                 int32_t k1_horiz_scale;
                 int32_t k2_horiz_scale;
                 int32_t dda_horiz_accumulator;
                uint32_t fifo_ctrl;
                uint32_t pri_start;
                uint32_t pri_size;
                uint32_t sec_start;
                uint32_t sec_size;

                int sdif;

                int pri_x, pri_y, pri_w, pri_h;
                int sec_x, sec_y, sec_w, sec_h;
        } streams;

	fifo_entry_t fifo[FIFO_SIZE];
	volatile int fifo_read_idx, fifo_write_idx;

	uint8_t fifo_thread_run;

	thread_t *fifo_thread;
	event_t *wake_fifo_thread;
	event_t *fifo_not_full_event;

	int blitter_busy;
	uint64_t blitter_time;
	uint64_t status_time;

	uint8_t subsys_cntl, subsys_stat;

	uint32_t hwc_fg_col, hwc_bg_col;
	int hwc_col_stack_pos;

	int translate;
	int enable_8514;
	int color_16bit;
	volatile int busy, force_busy;

	uint8_t thread_run, serialport;
	void *i2c, *ddc;

	int vram;
} s3_t;

#define INT_VSY      (1 << 0)
#define INT_GE_BSY   (1 << 1)
#define INT_FIFO_OVR (1 << 2)
#define INT_FIFO_EMP (1 << 3)
#define INT_MASK     0xf

#define SERIAL_PORT_SCW (1 << 0)
#define SERIAL_PORT_SDW (1 << 1)
#define SERIAL_PORT_SCR (1 << 2)
#define SERIAL_PORT_SDR (1 << 3)

static void s3_updatemapping(s3_t *s3);

static void s3_accel_write(uint32_t addr, uint8_t val, void *p);
static void s3_accel_write_w(uint32_t addr, uint16_t val, void *p);
static void s3_accel_write_l(uint32_t addr, uint32_t val, void *p);
static uint8_t s3_accel_read(uint32_t addr, void *p);
static uint16_t s3_accel_read_w(uint32_t addr, void *p);
static uint32_t s3_accel_read_l(uint32_t addr, void *p);

static void s3_out(uint16_t addr, uint8_t val, void *p);
static uint8_t s3_in(uint16_t addr, void *p);

static void s3_accel_out(uint16_t port, uint8_t val, void *p);
static void s3_accel_out_w(uint16_t port, uint16_t val, void *p);
static void s3_accel_out_l(uint16_t port, uint32_t val, void *p);
static uint8_t s3_accel_in(uint16_t port, void *p);
static uint16_t s3_accel_in_w(uint16_t port, void *p);
static uint32_t s3_accel_in_l(uint16_t port, void *p);
static uint8_t	s3_pci_read(int func, int addr, void *p);
static void	s3_pci_write(int func, int addr, uint8_t val, void *p);

/*Remap address for chain-4/doubleword style layout.
  These will stay for convenience.*/
static __inline uint32_t
dword_remap(svga_t *svga, uint32_t in_addr)
{
		if (svga->packed_chain4 || svga->force_old_addr)
			return in_addr;
	
        return ((in_addr << 2) & 0x3fff0) |
                ((in_addr >> 14) & 0xc) |
                (in_addr & ~0x3fffc);
}
static __inline uint32_t
dword_remap_w(svga_t *svga, uint32_t in_addr)
{
		if (svga->packed_chain4 || svga->force_old_addr)
			return in_addr;	
	
        return ((in_addr << 2) & 0x1fff8) |
                ((in_addr >> 14) & 0x6) |
                (in_addr & ~0x1fffe);
}
static __inline uint32_t
dword_remap_l(svga_t *svga, uint32_t in_addr)
{
		if (svga->packed_chain4 || svga->force_old_addr)
			return in_addr;	
	
        return ((in_addr << 2) & 0xfffc) |
                ((in_addr >> 14) & 0x3) |
                (in_addr & ~0xffff);
}

static __inline void
wake_fifo_thread(s3_t *s3)
{
	thread_set_event(s3->wake_fifo_thread); /*Wake up FIFO thread if moving from idle*/
}

static void
s3_wait_fifo_idle(s3_t *s3)
{
	while (!FIFO_EMPTY) {
		wake_fifo_thread(s3);
		thread_wait_event(s3->fifo_not_full_event, 1);
	}
}

static void
s3_queue(s3_t *s3, uint32_t addr, uint32_t val, uint32_t type)
{
	fifo_entry_t *fifo = &s3->fifo[s3->fifo_write_idx & FIFO_MASK];

	if (FIFO_FULL) {
		thread_reset_event(s3->fifo_not_full_event);
		if (FIFO_FULL) {
			thread_wait_event(s3->fifo_not_full_event, -1); /*Wait for room in ringbuffer*/
		}
	}

	fifo->val = val;
	fifo->addr_type = (addr & FIFO_ADDR) | type;

	s3->fifo_write_idx++;

	if (FIFO_ENTRIES > 0xe000 || FIFO_ENTRIES < 8)
		wake_fifo_thread(s3);
}

static void
s3_update_irqs(s3_t *s3)
{
	if (!s3->pci)
		return;

	if (s3->subsys_cntl & s3->subsys_stat & INT_MASK) {
		pci_set_irq(s3->card, PCI_INTA);
	} else {
		pci_clear_irq(s3->card, PCI_INTA);
	}
}

void s3_accel_start(int count, int cpu_input, uint32_t mix_dat, uint32_t cpu_dat, s3_t *s3);
void s3_short_stroke_start(int count, int cpu_input, uint32_t mix_dat, uint32_t cpu_dat, s3_t *s3, uint8_t ssv);
static void s3_visionx68_video_engine_op(uint32_t cpu_dat, s3_t *s3);

#define WRITE8(addr, var, val)  switch ((addr) & 3)					     \
				{							       \
					case 0: var = (var & 0xffffff00) | (val);	 break;  \
					case 1: var = (var & 0xffff00ff) | ((val) << 8);  break;  \
					case 2: var = (var & 0xff00ffff) | ((val) << 16); break;  \
					case 3: var = (var & 0x00ffffff) | ((val) << 24); break;  \
				}


#define READ_PIXTRANS_BYTE_IO(n) \
				s3->accel.pix_trans[n] = svga->vram[dword_remap(svga, (s3->accel.dest + s3->accel.cx + n)) & s3->vram_mask]; \

#define READ_PIXTRANS_BYTE_MM \
				temp = svga->vram[dword_remap(svga, (s3->accel.dest + s3->accel.cx)) & s3->vram_mask]; \

#define READ_PIXTRANS_WORD \
				if (s3->bpp == 0 && !s3->color_16bit) { \
					temp = svga->vram[dword_remap(svga, (s3->accel.dest + s3->accel.cx)) & s3->vram_mask]; \
					temp |= (svga->vram[dword_remap(svga, (s3->accel.dest + s3->accel.cx + 1)) & s3->vram_mask] << 8); \
				} else {	\
					temp = vram_w[dword_remap_w(svga, (s3->accel.dest + s3->accel.cx)) & (s3->vram_mask >> 1)]; \
				}

#define READ_PIXTRANS_LONG \
				if (s3->bpp == 0 && !s3->color_16bit) { \
					temp = svga->vram[dword_remap(svga, (s3->accel.dest + s3->accel.cx)) & s3->vram_mask]; \
					temp |= (svga->vram[dword_remap(svga, (s3->accel.dest + s3->accel.cx + 1)) & s3->vram_mask] << 8); \
					temp |= (svga->vram[dword_remap(svga, (s3->accel.dest + s3->accel.cx + 2)) & s3->vram_mask] << 16); \
					temp |= (svga->vram[dword_remap(svga, (s3->accel.dest + s3->accel.cx + 3)) & s3->vram_mask] << 24); \
				} else {	\
					temp = vram_w[dword_remap_w(svga, (s3->accel.dest + s3->accel.cx)) & (s3->vram_mask >> 1)]; \
					temp |= (vram_w[dword_remap_w(svga, (s3->accel.dest + s3->accel.cx + 2)) & (s3->vram_mask >> 1)] << 16); \
				}

static int
s3_cpu_src(s3_t *s3)
{
    if (!(s3->accel.cmd & 0x100))
    return 0;

    if (s3->chip >= S3_VISION964)
    return 1;

    if (s3->accel.cmd & 1)
    return 1;

    return 0;
}

static int
s3_cpu_dest(s3_t *s3)
{
    if (!(s3->accel.cmd & 0x100))
    return 0;

    if (s3->chip >= S3_VISION964)
    return 0;

    if (s3->accel.cmd & 1)
    return 0;

    return 1;
}

static int
s3_enable_fifo(s3_t *s3)
{
	svga_t *svga = &s3->svga;

    if ((s3->chip == S3_TRIO32) || (s3->chip == S3_TRIO64) ||
	(s3->chip == S3_TRIO64V) || (s3->chip == S3_TRIO64V2) ||
	(s3->chip == S3_VISION864) || (s3->chip == S3_VISION964) ||
	(s3->chip == S3_VISION968) || (s3->chip == S3_VISION868))
	return 1;	/* FIFO always enabled on these chips. */

    return !!((svga->crtc[0x40] & 0x08) || (s3->accel.advfunc_cntl & 0x40));
}

static void
s3_accel_out_pixtrans_w(s3_t *s3, uint16_t val)
{
	svga_t *svga = &s3->svga;

	if (s3->accel.cmd & 0x100) {
		switch (s3->accel.cmd & 0x600) {
			case 0x000:
				if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
					if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
						if (s3->accel.cmd & 0x1000)
							val = (val >> 8) | (val << 8);
						s3_accel_start(8, 1, val | (val << 16), 0, s3);
					} else
						s3_accel_start(1, 1, 0xffffffff, val | (val << 16), s3);
				} else {
					if (s3->color_16bit)
						s3_accel_start(2, 1, 0xffffffff, val | (val << 16), s3);
					else
						s3_accel_start(1, 1, 0xffffffff, val | (val << 16), s3);
				}
				break;
			case 0x200:
				if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
					if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
						if (s3->accel.cmd & 0x1000)
							val = (val >> 8) | (val << 8);
						s3_accel_start(16, 1, val | (val << 16), 0, s3);
					} else
						s3_accel_start(2, 1, 0xffffffff, val | (val << 16), s3);
				} else {
					s3_accel_start(2, 1, 0xffffffff, val | (val << 16), s3);
				}
				break;
			case 0x400:
				if (svga->crtc[0x53] & 0x08) {
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
							if (s3->accel.cmd & 0x1000)
								val = (val >> 8) | (val << 8);
							s3_accel_start(32, 1, val | (val << 16), 0, s3);
						} else
							s3_accel_start(4, 1, 0xffffffff, val | (val << 16), s3);
					} else
						s3_accel_start(4, 1, 0xffffffff, val | (val << 16), s3);
				} else {
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
							if (s3->accel.cmd & 0x1000)
								val = (val >> 8) | (val << 8);
							s3_accel_start(16, 1, val | (val << 16), 0, s3);
						} else
							s3_accel_start(4, 1, 0xffffffff, val | (val << 16), s3);
					} else
						s3_accel_start(4, 1, 0xffffffff, val | (val << 16), s3);
				}
				break;
			case 0x600:
				if (s3->chip == S3_TRIO32 || s3->chip == S3_VISION968 || s3->chip == S3_VISION868 || s3->chip >= S3_TRIO64V) {
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
							if (s3->accel.cmd & 0x1000)
								val = (val >> 8) | (val << 8);
							s3_accel_start(8, 1, (val >> 8) & 0xff, 0, s3);
							s3_accel_start(8, 1,  val       & 0xff, 0, s3);
						}
					}
				}
				break;
		}
	}
}

static void
s3_accel_out_pixtrans_l(s3_t *s3, uint32_t val)
{
	if (s3->accel.cmd & 0x100) {
		switch (s3->accel.cmd & 0x600) {
			case 0x000:
				if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
					if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
						if (s3->accel.cmd & 0x1000)
							val = ((val & 0xff00ff00) >> 8) | ((val & 0x00ff00ff) << 8);
						s3_accel_start(8, 1, val, 0, s3);
						s3_accel_start(8, 1, val >> 16, 0, s3);
					} else {
						s3_accel_start(1, 1, 0xffffffff, val, s3);
						s3_accel_start(1, 1, 0xffffffff, val >> 16, s3);
					}
				} else {
					s3_accel_start(1, 1, 0xffffffff, val, s3);
					s3_accel_start(1, 1, 0xffffffff, val >> 16, s3);
				}
				break;
			case 0x200:
				if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
					if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
						if (s3->accel.cmd & 0x1000)
							val = ((val & 0xff00ff00) >> 8) | ((val & 0x00ff00ff) << 8);
						s3_accel_start(16, 1, val, 0, s3);
						s3_accel_start(16, 1, val >> 16, 0, s3);
					} else {
						s3_accel_start(2, 1, 0xffffffff, val, s3);
						s3_accel_start(2, 1, 0xffffffff, val >> 16, s3);
					}
				} else {
					s3_accel_start(2, 1, 0xffffffff, val, s3);
					s3_accel_start(2, 1, 0xffffffff, val >> 16, s3);
				}
				break;
			case 0x400:
				if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
					if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
						if (s3->accel.cmd & 0x1000)
							val = ((val & 0xff000000) >> 24) | ((val & 0x00ff0000) >> 8) | ((val & 0x0000ff00) << 8) | ((val & 0x000000ff) << 24);
						s3_accel_start(32, 1, val, 0, s3);
					} else
						s3_accel_start(4, 1, 0xffffffff, val, s3);
				} else
					s3_accel_start(4, 1, 0xffffffff, val, s3);
				break;
			case 0x600:
				if (s3->chip == S3_TRIO32 || s3->chip == S3_VISION968 || s3->chip == S3_VISION868 || s3->chip >= S3_TRIO64V) {
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
							if (s3->accel.cmd & 0x1000)
								val = ((val & 0xff000000) >> 24) | ((val & 0x00ff0000) >> 8) | ((val & 0x0000ff00) << 8) | ((val & 0x000000ff) << 24);
							s3_accel_start(8, 1, (val >> 24) & 0xff, 0, s3);
							s3_accel_start(8, 1, (val >> 16) & 0xff, 0, s3);
							s3_accel_start(8, 1, (val >> 8)  & 0xff, 0, s3);
							s3_accel_start(8, 1,  val	& 0xff, 0, s3);
						}
					}
				}
				break;
		}
	}
}

static void
s3_accel_out_fifo(s3_t *s3, uint16_t port, uint8_t val)
{
    svga_t *svga = &s3->svga;

    switch (port) {
	case 0x8148: case 0x82e8:
		s3->accel.cur_y_bitres = (s3->accel.cur_y_bitres & 0xff00) | val;
		s3->accel.cur_y = (s3->accel.cur_y & 0xf00) | val;
		s3->accel.poly_cy = s3->accel.cur_y;
		break;
	case 0x8149: case 0x82e9:
		s3->accel.cur_y_bitres = (s3->accel.cur_y_bitres & 0xff) | (val << 8);
		s3->accel.cur_y = (s3->accel.cur_y & 0xff) | ((val & 0x0f) << 8);
		s3->accel.cur_y_bit12 = val & 0x10;
		s3->accel.poly_cy = s3->accel.cur_y;
		break;
	case 0x814a: case 0x82ea:
		s3->accel.cur_y2 = (s3->accel.cur_y2 & 0xf00) | val;
		s3->accel.poly_cy2 = s3->accel.cur_y2;
		break;
	case 0x814b: case 0x82eb:
		s3->accel.cur_y2 = (s3->accel.cur_y2 & 0xff) | ((val & 0x0f) << 8);
		s3->accel.poly_cy2 = s3->accel.cur_y2;
		break;

	case 0x8548: case 0x86e8:
		s3->accel.cur_x_bitres = (s3->accel.cur_x_bitres & 0xff00) | val;
		s3->accel.cur_x = (s3->accel.cur_x & 0xf00) | val;
		s3->accel.poly_cx = s3->accel.cur_x << 20;
		s3->accel.poly_x = s3->accel.poly_cx >> 20;
		break;
	case 0x8549: case 0x86e9:
		s3->accel.cur_x_bitres = (s3->accel.cur_x_bitres & 0xff) | (val << 8);
		s3->accel.cur_x = (s3->accel.cur_x & 0xff) | ((val & 0x0f) << 8);
		s3->accel.cur_x_bit12 = val & 0x10;
		s3->accel.poly_cx = s3->accel.poly_x = s3->accel.cur_x << 20;
		s3->accel.poly_x = s3->accel.poly_cx >> 20;
		break;
	case 0x854a: case 0x86ea:
		s3->accel.cur_x2 = (s3->accel.cur_x2 & 0xf00) | val;
		s3->accel.poly_cx2 = s3->accel.cur_x2 << 20;
		break;
	case 0x854b: case 0x86eb:
		s3->accel.cur_x2 = (s3->accel.cur_x2 & 0xff) | ((val & 0x0f) << 8);
		s3->accel.poly_cx2 = s3->accel.cur_x2 << 20;
		break;

	case 0xcae8:
	case 0x8948: case 0x8ae8:
		s3->accel.desty_axstp = (s3->accel.desty_axstp & 0x3f00) | val;
		s3->accel.point_1_updated = 1;
		break;
	case 0xcae9:
	case 0x8949: case 0x8ae9:
		s3->accel.desty_axstp = (s3->accel.desty_axstp & 0xff) | ((val & 0x3f) << 8);
		if (val & 0x20)
			s3->accel.desty_axstp |= ~0x3fff;
		s3->accel.point_1_updated = 1;
		break;
	case 0x894a: case 0x8aea:
		s3->accel.desty_axstp2 = (s3->accel.desty_axstp2 & 0x3f00) | val;
		s3->accel.point_2_updated = 1;
		break;
	case 0x849b: case 0x8aeb:
		s3->accel.desty_axstp2 = (s3->accel.desty_axstp2 & 0xff) | ((val & 0x3f) << 8);
		if (val & 0x20)
			s3->accel.desty_axstp2 |= ~0x3fff;
		s3->accel.point_2_updated = 1;
		break;

	case 0x8d48: case 0x8ee8:
		s3->accel.destx_distp = (s3->accel.destx_distp & 0x3f00) | val;
		s3->accel.point_1_updated = 1;
		break;
	case 0x8d49: case 0x8ee9:
		s3->accel.destx_distp = (s3->accel.destx_distp & 0xff) | ((val & 0x3f) << 8);
		if (val & 0x20)
			s3->accel.destx_distp |= ~0x3fff;
		s3->accel.point_1_updated = 1;
		break;
	case 0x8d4a: case 0x8eea:
		s3->accel.x2 = (s3->accel.x2 & 0xf00) | val;
		s3->accel.point_2_updated = 1;
		break;
	case 0x8d4b: case 0x8eeb:
		s3->accel.x2 = (s3->accel.x2 & 0xff) | ((val & 0x0f) << 8);
		s3->accel.point_2_updated = 1;
		break;

	case 0x9148: case 0x92e8:
		s3->accel.err_term = (s3->accel.err_term & 0x3f00) | val;
		break;
	case 0x9149: case 0x92e9:
		s3->accel.err_term = (s3->accel.err_term & 0xff) | ((val & 0x3f) << 8);
		if (val & 0x20)
			s3->accel.err_term |= ~0x3fff;
		break;
	case 0x914a: case 0x92ea:
		s3->accel.err_term2 = (s3->accel.err_term2 & 0x3f00) | val;
		break;
	case 0x914b: case 0x92eb:
		s3->accel.err_term2 = (s3->accel.err_term2 & 0xff) | ((val & 0x3f) << 8);
		if (val & 0x20)
			s3->accel.err_term2 |= ~0x3fff;
		break;

	case 0x9548: case 0x96e8:
		s3->accel.maj_axis_pcnt = (s3->accel.maj_axis_pcnt & 0xf00) | val;
		break;
	case 0x9459: case 0x96e9:
		s3->accel.maj_axis_pcnt = (s3->accel.maj_axis_pcnt & 0xff) | ((val & 0x0f) << 8);
		if (val & 0x08)
			s3->accel.maj_axis_pcnt |= ~0x0fff;
		break;
	case 0x954a: case 0x96ea:
		s3->accel.maj_axis_pcnt2 = (s3->accel.maj_axis_pcnt2 & 0xf00) | val;
		break;
	case 0x954b: case 0x96eb:
		s3->accel.maj_axis_pcnt2 = (s3->accel.maj_axis_pcnt2 & 0xff) | ((val & 0x0f) << 8);
		if (val & 0x08)
			s3->accel.maj_axis_pcnt2 |= ~0x0fff;
		break;

	case 0x9948: case 0x9ae8:
		s3->accel.cmd = (s3->accel.cmd & 0xff00) | val;
		s3->data_available = 0;
		s3->accel.b2e8_pix = 0;
		break;
	case 0x9949: case 0x9ae9:
		s3->accel.cmd = (s3->accel.cmd & 0xff) | (val << 8);
		s3->accel.ssv_state = 0;
		s3_accel_start(-1, 0, 0xffffffff, 0, s3);
		s3->accel.multifunc[0xe] &= ~0x10; /*hack*/
		break;

	case 0x994a: case 0x9aea:
		s3->accel.cmd2 = (s3->accel.cmd2 & 0xff00) | val;
		break;
	case 0x994b: case 0x9aeb:
		s3->accel.cmd2 = (s3->accel.cmd2 & 0xff) | (val << 8);
		break;

	case 0x9d48: case 0x9ee8:
		s3->accel.short_stroke = (s3->accel.short_stroke & 0xff00) | val;
		break;
	case 0x9d49: case 0x9ee9:
		s3->accel.short_stroke = (s3->accel.short_stroke & 0xff) | (val << 8);
		s3->accel.ssv_state = 1;

		s3->accel.cx   = s3->accel.cur_x;
		if (s3->accel.cur_x_bit12) s3->accel.cx |= ~0xfff;
		s3->accel.cy   = s3->accel.cur_y;
		if (s3->accel.cur_y_bit12) s3->accel.cy |= ~0xfff;

		if (s3->accel.cmd & 0x1000) {
			s3_short_stroke_start(-1, 0, 0xffffffff, 0, s3, s3->accel.short_stroke & 0xff);
			s3_short_stroke_start(-1, 0, 0xffffffff, 0, s3, s3->accel.short_stroke >> 8);
		} else {
			s3_short_stroke_start(-1, 0, 0xffffffff, 0, s3, s3->accel.short_stroke >> 8);
			s3_short_stroke_start(-1, 0, 0xffffffff, 0, s3, s3->accel.short_stroke & 0xff);
		}
		break;

	case 0xa148: case 0xa2e8:
		if (s3->bpp == 3 && s3->accel.multifunc[0xe] & 0x10 && !(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.bkgd_color = (s3->accel.bkgd_color & ~0x00ff0000) | (val << 16);
		else
			s3->accel.bkgd_color = (s3->accel.bkgd_color & ~0x000000ff) | val;
		break;
	case 0xa149: case 0xa2e9:
		if (s3->bpp == 3 && s3->accel.multifunc[0xe] & 0x10 && !(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.bkgd_color = (s3->accel.bkgd_color & ~0xff000000) | (val << 24);
		else
			s3->accel.bkgd_color = (s3->accel.bkgd_color & ~0x0000ff00) | (val << 8);
		if (!(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.multifunc[0xe] ^= 0x10;
		break;
	case 0xa14a: case 0xa2ea:
		if (s3->accel.multifunc[0xe] & 0x200)
			s3->accel.bkgd_color = (s3->accel.bkgd_color & ~0x00ff0000) | (val << 16);
		else if (s3->bpp == 3) {
			if (s3->accel.multifunc[0xe] & 0x10)
				s3->accel.bkgd_color = (s3->accel.bkgd_color & ~0x00ff0000) | (val << 16);
			else
				s3->accel.bkgd_color = (s3->accel.bkgd_color & ~0x000000ff) | val;
		}
		break;
	case 0xa14b: case 0xa2eb:
		if (s3->accel.multifunc[0xe] & 0x200)
			s3->accel.bkgd_color = (s3->accel.bkgd_color & ~0xff000000) | (val << 24);
		else if (s3->bpp == 3) {
			if (s3->accel.multifunc[0xe] & 0x10)
				s3->accel.bkgd_color = (s3->accel.bkgd_color & ~0xff000000) | (val << 24);
			else
				s3->accel.bkgd_color = (s3->accel.bkgd_color & ~0x0000ff00) | (val << 8);
			s3->accel.multifunc[0xe] ^= 0x10;
		}
		break;

	case 0xa548: case 0xa6e8:
		if (s3->bpp == 3 && s3->accel.multifunc[0xe] & 0x10 && !(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.frgd_color = (s3->accel.frgd_color & ~0x00ff0000) | (val << 16);
		else
			s3->accel.frgd_color = (s3->accel.frgd_color & ~0x000000ff) | val;
		break;
	case 0xa549: case 0xa6e9:
		if (s3->bpp == 3 && s3->accel.multifunc[0xe] & 0x10 && !(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.frgd_color = (s3->accel.frgd_color & ~0xff000000) | (val << 24);
		else
			s3->accel.frgd_color = (s3->accel.frgd_color & ~0x0000ff00) | (val << 8);
		if (!(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.multifunc[0xe] ^= 0x10;
		break;
	case 0xa54a: case 0xa6ea:
		if (s3->accel.multifunc[0xe] & 0x200)
			s3->accel.frgd_color = (s3->accel.frgd_color & ~0x00ff0000) | (val << 16);
		else if (s3->bpp == 3) {
			if (s3->accel.multifunc[0xe] & 0x10)
				s3->accel.frgd_color = (s3->accel.frgd_color & ~0x00ff0000) | (val << 16);
			else
				s3->accel.frgd_color = (s3->accel.frgd_color & ~0x000000ff) | val;
		}
		break;
	case 0xa54b: case 0xa6eb:
		if (s3->accel.multifunc[0xe] & 0x200)
			s3->accel.frgd_color = (s3->accel.frgd_color & ~0xff000000) | (val << 24);
		else if (s3->bpp == 3) {
			if (s3->accel.multifunc[0xe] & 0x10)
				s3->accel.frgd_color = (s3->accel.frgd_color & ~0xff000000) | (val << 24);
			else
				s3->accel.frgd_color = (s3->accel.frgd_color & ~0x0000ff00) | (val << 8);
			s3->accel.multifunc[0xe] ^= 0x10;
		}
		break;

	case 0xa948: case 0xaae8:
		if (s3->bpp == 3 && s3->accel.multifunc[0xe] & 0x10 && !(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.wrt_mask = (s3->accel.wrt_mask & ~0x00ff0000) | (val << 16);
		else
			s3->accel.wrt_mask = (s3->accel.wrt_mask & ~0x000000ff) | val;
		break;
	case 0xa949: case 0xaae9:
		if (s3->bpp == 3 && s3->accel.multifunc[0xe] & 0x10 && !(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.wrt_mask = (s3->accel.wrt_mask & ~0xff000000) | (val << 24);
		else
			s3->accel.wrt_mask = (s3->accel.wrt_mask & ~0x0000ff00) | (val << 8);
		if (!(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.multifunc[0xe] ^= 0x10;
		break;
	case 0xa94a: case 0xaaea:
		if (s3->accel.multifunc[0xe] & 0x200)
			s3->accel.wrt_mask = (s3->accel.wrt_mask & ~0x00ff0000) | (val << 16);
		else if (s3->bpp == 3) {
			if (s3->accel.multifunc[0xe] & 0x10)
				s3->accel.wrt_mask = (s3->accel.wrt_mask & ~0x00ff0000) | (val << 16);
			else
				s3->accel.wrt_mask = (s3->accel.wrt_mask & ~0x000000ff) | val;
		}
		break;
	case 0xa94b: case 0xaaeb:
		if (s3->accel.multifunc[0xe] & 0x200)
			s3->accel.wrt_mask = (s3->accel.wrt_mask & ~0xff000000) | (val << 24);
		else if (s3->bpp == 3) {
			if (s3->accel.multifunc[0xe] & 0x10)
				s3->accel.wrt_mask = (s3->accel.wrt_mask & ~0xff000000) | (val << 24);
			else
				s3->accel.wrt_mask = (s3->accel.wrt_mask & ~0x0000ff00) | (val << 8);
			s3->accel.multifunc[0xe] ^= 0x10;
		}
		break;

	case 0xad48: case 0xaee8:
		if (s3->bpp == 3 && s3->accel.multifunc[0xe] & 0x10 && !(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.rd_mask = (s3->accel.rd_mask & ~0x00ff0000) | (val << 16);
		else
			s3->accel.rd_mask = (s3->accel.rd_mask & ~0x000000ff) | val;
		break;
	case 0xad49: case 0xaee9:
		if (s3->bpp == 3 && s3->accel.multifunc[0xe] & 0x10 && !(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.rd_mask = (s3->accel.rd_mask & ~0xff000000) | (val << 24);
		else
			s3->accel.rd_mask = (s3->accel.rd_mask & ~0x0000ff00) | (val << 8);
		if (!(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.multifunc[0xe] ^= 0x10;
		break;
	case 0xad4a: case 0xaeea:
		if (s3->accel.multifunc[0xe] & 0x200)
			s3->accel.rd_mask = (s3->accel.rd_mask & ~0x00ff0000) | (val << 16);
		else if (s3->bpp == 3) {
			if (s3->accel.multifunc[0xe] & 0x10)
				s3->accel.rd_mask = (s3->accel.rd_mask & ~0x00ff0000) | (val << 16);
			else
				s3->accel.rd_mask = (s3->accel.rd_mask & ~0x000000ff) | val;
		}
		break;
	case 0xad4b: case 0xaeeb:
		if (s3->accel.multifunc[0xe] & 0x200)
			s3->accel.rd_mask = (s3->accel.rd_mask & ~0xff000000) | (val << 24);
		else if (s3->bpp == 3) {
			if (s3->accel.multifunc[0xe] & 0x10)
				s3->accel.rd_mask = (s3->accel.rd_mask & ~0xff000000) | (val << 24);
			else
				s3->accel.rd_mask = (s3->accel.rd_mask & ~0x0000ff00) | (val << 8);
			s3->accel.multifunc[0xe] ^= 0x10;
		}
		break;

	case 0xb148: case 0xb2e8:
		if (s3->bpp == 3 && s3->accel.multifunc[0xe] & 0x10 && !(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.color_cmp = (s3->accel.color_cmp & ~0x00ff0000) | (val << 16);
		else
			s3->accel.color_cmp = (s3->accel.color_cmp & ~0x000000ff) | val;
		break;
	case 0xb149: case 0xb2e9:
		if (s3->bpp == 3 && s3->accel.multifunc[0xe] & 0x10 && !(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.color_cmp = (s3->accel.color_cmp & ~0xff000000) | (val << 24);
		else
			s3->accel.color_cmp = (s3->accel.color_cmp & ~0x0000ff00) | (val << 8);
		if (!(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.multifunc[0xe] ^= 0x10;
		break;
	case 0xb14a: case 0xb2ea:
		if (s3->accel.multifunc[0xe] & 0x200)
			s3->accel.color_cmp = (s3->accel.color_cmp & ~0x00ff0000) | (val << 16);
		else if (s3->bpp == 3) {
			if (s3->accel.multifunc[0xe] & 0x10)
				s3->accel.color_cmp = (s3->accel.color_cmp & ~0x00ff0000) | (val << 16);
			else
				s3->accel.color_cmp = (s3->accel.color_cmp & ~0x000000ff) | val;
		}
		break;
	case 0xb14b: case 0xb2eb:
		if (s3->accel.multifunc[0xe] & 0x200)
			s3->accel.color_cmp = (s3->accel.color_cmp & ~0xff000000) | (val << 24);
		else if (s3->bpp == 3) {
			if (s3->accel.multifunc[0xe] & 0x10)
				s3->accel.color_cmp = (s3->accel.color_cmp & ~0xff000000) | (val << 24);
			else
				s3->accel.color_cmp = (s3->accel.color_cmp & ~0x0000ff00) | (val << 8);
			s3->accel.multifunc[0xe] ^= 0x10;
		}
		break;

	case 0xb548: case 0xb6e8:
		s3->accel.bkgd_mix = val;
		break;

	case 0xb948: case 0xbae8:
		s3->accel.frgd_mix = val;
		break;

	case 0xbd48: case 0xbee8:
		s3->accel.multifunc_cntl = (s3->accel.multifunc_cntl & 0xff00) | val;
		break;
	case 0xbd49: case 0xbee9:
		s3->accel.multifunc_cntl = (s3->accel.multifunc_cntl & 0xff) | (val << 8);
		s3->accel.multifunc[s3->accel.multifunc_cntl >> 12] = s3->accel.multifunc_cntl & 0xfff;
		break;

	case 0xd148: case 0xd2e8:
		s3->accel.ropmix = (s3->accel.ropmix & 0xff00) | val;
		break;
	case 0xd149: case 0xd2e9:
		s3->accel.ropmix = (s3->accel.ropmix & 0x00ff) | (val << 8);
		break;
	case 0xe548: case 0xe6e8:
		if (s3->bpp == 3 && s3->accel.multifunc[0xe] & 0x10 && !(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.pat_bg_color = (s3->accel.pat_bg_color & ~0x00ff0000) | (val << 16);
		else
			s3->accel.pat_bg_color = (s3->accel.pat_bg_color & ~0x000000ff) | val;
		break;
	case 0xe549: case 0xe6e9:
		if (s3->bpp == 3 && s3->accel.multifunc[0xe] & 0x10 && !(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.pat_bg_color = (s3->accel.pat_bg_color & ~0xff000000) | (val << 24);
		else
			s3->accel.pat_bg_color = (s3->accel.pat_bg_color & ~0x0000ff00) | (val << 8);
		if (!(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.multifunc[0xe] ^= 0x10;
		break;
	case 0xe54a: case 0xe6ea:
		if (s3->accel.multifunc[0xe] & 0x200)
			s3->accel.pat_bg_color = (s3->accel.pat_bg_color & ~0x00ff0000) | (val << 16);
		else if (s3->bpp == 3) {
			if (s3->accel.multifunc[0xe] & 0x10)
				s3->accel.pat_bg_color = (s3->accel.pat_bg_color & ~0x00ff0000) | (val << 16);
			else
				s3->accel.pat_bg_color = (s3->accel.pat_bg_color & ~0x000000ff) | val;
		}
		break;
	case 0xe54b: case 0xe6eb:
		if (s3->accel.multifunc[0xe] & 0x200)
			s3->accel.pat_bg_color = (s3->accel.pat_bg_color & ~0xff000000) | (val << 24);
		else if (s3->bpp == 3) {
			if (s3->accel.multifunc[0xe] & 0x10)
				s3->accel.pat_bg_color = (s3->accel.pat_bg_color & ~0xff000000) | (val << 24);
			else
				s3->accel.pat_bg_color = (s3->accel.pat_bg_color & ~0x0000ff00) | (val << 8);
			s3->accel.multifunc[0xe] ^= 0x10;
		}
		break;
	case 0xe948: case 0xeae8:
		s3->accel.pat_y = (s3->accel.pat_y & 0xf00) | val;
		break;
	case 0xe949: case 0xeae9:
		s3->accel.pat_y = (s3->accel.pat_y & 0xff) | ((val & 0x1f) << 8);
		break;
	case 0xe94a: case 0xeaea:
		s3->accel.pat_x = (s3->accel.pat_x & 0xf00) | val;
		break;
	case 0xe94b: case 0xeaeb:
		s3->accel.pat_x = (s3->accel.pat_x & 0xff) | ((val & 0x1f) << 8);
		break;
	case 0xed48: case 0xeee8:
		if (s3->bpp == 3 && s3->accel.multifunc[0xe] & 0x10 && !(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.pat_fg_color = (s3->accel.pat_fg_color & ~0x00ff0000) | (val << 16);
		else
			s3->accel.pat_fg_color = (s3->accel.pat_fg_color & ~0x000000ff) | val;
		break;
	case 0xed49: case 0xeee9:
		if (s3->bpp == 3 && s3->accel.multifunc[0xe] & 0x10 && !(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.pat_fg_color = (s3->accel.pat_fg_color & ~0xff000000) | (val << 24);
		else
			s3->accel.pat_fg_color = (s3->accel.pat_fg_color & ~0x0000ff00) | (val << 8);
		if (!(s3->accel.multifunc[0xe] & 0x200))
			s3->accel.multifunc[0xe] ^= 0x10;
		break;
	case 0xed4a: case 0xeeea:
		if (s3->accel.multifunc[0xe] & 0x200)
			s3->accel.pat_fg_color = (s3->accel.pat_fg_color & ~0x00ff0000) | (val << 16);
		else if (s3->bpp == 3) {
			if (s3->accel.multifunc[0xe] & 0x10)
				s3->accel.pat_fg_color = (s3->accel.pat_fg_color & ~0x00ff0000) | (val << 16);
			else
				s3->accel.pat_fg_color = (s3->accel.pat_fg_color & ~0x000000ff) | val;
		}
		break;
	case 0xed4b: case 0xeeeb:
		if (s3->accel.multifunc[0xe] & 0x200)
			s3->accel.pat_fg_color = (s3->accel.pat_fg_color & ~0xff000000) | (val << 24);
		else if (s3->bpp == 3) {
			if (s3->accel.multifunc[0xe] & 0x10)
				s3->accel.pat_fg_color = (s3->accel.pat_fg_color & ~0xff000000) | (val << 24);
			else
				s3->accel.pat_fg_color = (s3->accel.pat_fg_color & ~0x0000ff00) | (val << 8);
			s3->accel.multifunc[0xe] ^= 0x10;
		}
		break;

	case 0xe148: case 0xe2e8:
		s3->accel.b2e8_pix = 0;
		if (s3_cpu_dest(s3))
			break;
		s3->accel.pix_trans[0] = val;
		if (s3->accel.cmd & 0x100) {
			switch (s3->accel.cmd & 0x600) {
				case 0x000:
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40))
							s3_accel_start(8, 1, s3->accel.pix_trans[0], 0, s3);
						else
							s3_accel_start(1, 1, 0xffffffff, s3->accel.pix_trans[0], s3);
					} else {
						if (s3->color_16bit)
							s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[0], s3);
						else
							s3_accel_start(1, 1, 0xffffffff, s3->accel.pix_trans[0], s3);
					}
					break;
				case 0x200:
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40))
							s3_accel_start(16, 1, s3->accel.pix_trans[0] | (s3->accel.pix_trans[0] << 8), 0, s3);
						else
							s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[0] << 8), s3);
					} else {
						if (s3->chip != S3_86C928PCI && s3->chip != S3_86C928) {
							s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[0] << 8), s3);
						}
					}
					break;
			}
		}
		break;
	case 0xe149: case 0xe2e9:
		s3->accel.b2e8_pix = 0;
		if (s3_cpu_dest(s3))
			break;
		s3->accel.pix_trans[1] = val;
		if (s3->accel.cmd & 0x100) {
			switch (s3->accel.cmd & 0x600) {
				case 0x000:
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40))
							s3_accel_start(8, 1, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8), 0, s3);
						else
							s3_accel_start(1, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8), s3);
					} else {
						s3_accel_start(1, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8), s3);
					}
					break;
				case 0x200:
					/*Windows 95's built-in driver expects this to be loaded regardless of the byte swap bit (0xE2E9) in the 86c928 ISA/VLB*/
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
							if (s3->accel.cmd & 0x1000)
								s3_accel_start(16, 1, s3->accel.pix_trans[1] | (s3->accel.pix_trans[0] << 8), 0, s3);
							else
								s3_accel_start(16, 1, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8), 0, s3);
						} else {
							if (s3->chip == S3_86C928 || s3->chip == S3_86C928PCI) {
								s3_accel_out_pixtrans_w(s3, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8));
							} else {
								if (s3->accel.cmd & 0x1000)
									s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[1] | (s3->accel.pix_trans[0] << 8), s3);
								else
									s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8), s3);
							}
						}
					} else {
						if (s3->chip == S3_86C928 || s3->chip == S3_86C928PCI) {
							s3_accel_out_pixtrans_w(s3, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8));
						} else {
							if (s3->accel.cmd & 0x1000)
								s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[1] | (s3->accel.pix_trans[0] << 8), s3);
							else
								s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8), s3);
						}
					}
					break;
				case 0x400:
					if (svga->crtc[0x53] & 0x08) {
						if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
							if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40))
								s3_accel_start(32, 1, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8), 0, s3);
							else
								s3_accel_start(4, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8), s3);
						} else
							s3_accel_start(4, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8), s3);
					}
					break;
				case 0x600:
					if (s3->chip == S3_TRIO32 || s3->chip == S3_VISION968 || s3->chip == S3_VISION868 || s3->chip >= S3_TRIO64V) {
						if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
							if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
								s3_accel_start(8, 1, s3->accel.pix_trans[1], 0, s3);
								s3_accel_start(8, 1, s3->accel.pix_trans[0], 0, s3);
							}
						}
					}
					break;
			}
		}
		break;
	case 0xe14a: case 0xe2ea:
		if (s3_cpu_dest(s3))
			break;
		s3->accel.pix_trans[2] = val;
		break;
	case 0xe14b: case 0xe2eb:
		if (s3_cpu_dest(s3))
			break;
		s3->accel.pix_trans[3] = val;
		if (s3->accel.cmd & 0x100) {
			switch (s3->accel.cmd & 0x600) {
				case 0x000:
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40))
							s3_accel_start(8, 1, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8) | (s3->accel.pix_trans[2] << 16) | (s3->accel.pix_trans[3] << 24), 0, s3);
						else
							s3_accel_start(1, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8) | (s3->accel.pix_trans[2] << 16) | (s3->accel.pix_trans[3] << 24), s3);
					} else
						s3_accel_start(1, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8) | (s3->accel.pix_trans[2] << 16) | (s3->accel.pix_trans[3] << 24), s3);
					break;
				case 0x200:
					/*Windows 95's built-in driver expects the upper 16 bits to be loaded instead of the whole 32-bit one, regardless of the byte swap bit (0xE2EB) in the 86c928 ISA/VLB card*/
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
							if (s3->accel.cmd & 0x1000)
								s3_accel_start(16, 1, s3->accel.pix_trans[3] | (s3->accel.pix_trans[2] << 8) | (s3->accel.pix_trans[1] << 16) | (s3->accel.pix_trans[0] << 24), 0, s3);
							else
								s3_accel_start(16, 1, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8) | (s3->accel.pix_trans[2] << 16) | (s3->accel.pix_trans[3] << 24), 0, s3);
						} else {
							if (s3->chip == S3_86C928 || s3->chip == S3_86C928PCI) {
								s3_accel_out_pixtrans_w(s3, s3->accel.pix_trans[2] | (s3->accel.pix_trans[3] << 8));
							} else {
								if (s3->accel.cmd & 0x1000)
									s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[3] | (s3->accel.pix_trans[2] << 8) | (s3->accel.pix_trans[1] << 16) | (s3->accel.pix_trans[0] << 24), s3);
								else
									s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8) | (s3->accel.pix_trans[2] << 16) | (s3->accel.pix_trans[3] << 24), s3);
							}
						}
					} else {
						if (s3->chip == S3_86C928 || s3->chip == S3_86C928PCI) {
							s3_accel_out_pixtrans_w(s3, s3->accel.pix_trans[2] | (s3->accel.pix_trans[3] << 8));
						} else {
							if (s3->accel.cmd & 0x1000)
								s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[3] | (s3->accel.pix_trans[2] << 8) | (s3->accel.pix_trans[1] << 16) | (s3->accel.pix_trans[0] << 24), s3);
							else
								s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8) | (s3->accel.pix_trans[2] << 16) | (s3->accel.pix_trans[3] << 24), s3);
						}
					}
					break;
				case 0x400:
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40))
							s3_accel_start(32, 1, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8) | (s3->accel.pix_trans[2] << 16) | (s3->accel.pix_trans[3] << 24), 0, s3);
						else
							s3_accel_start(4, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8) | (s3->accel.pix_trans[2] << 16) | (s3->accel.pix_trans[3] << 24), s3);
					} else
						s3_accel_start(4, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8) | (s3->accel.pix_trans[2] << 16) | (s3->accel.pix_trans[3] << 24), s3);
					break;
				case 0x600:
					if (s3->chip == S3_TRIO32 || s3->chip == S3_VISION968 || s3->chip == S3_VISION868 || s3->chip >= S3_TRIO64V) {
						if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
							if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
								s3_accel_start(8, 1, s3->accel.pix_trans[3], 0, s3);
								s3_accel_start(8, 1, s3->accel.pix_trans[2], 0, s3);
								s3_accel_start(8, 1, s3->accel.pix_trans[1], 0, s3);
								s3_accel_start(8, 1, s3->accel.pix_trans[0], 0, s3);
							}
						}
					}
					break;
			}
		}
		break;
	}
}

static void
s3_accel_out_fifo_w(s3_t *s3, uint16_t port, uint16_t val)
{
	if (port != 0x9ee8 && port != 0x9d48) {
		if (port == 0xb2e8 || port == 0xb148) {
			s3->accel.b2e8_pix = 1;
		} else {
			s3->accel.b2e8_pix = 0;
		}
		s3_accel_out_pixtrans_w(s3, val);
	} else {
		s3->accel.short_stroke = val;
		s3->accel.ssv_state = 1;

		s3->accel.cx   = s3->accel.cur_x;
		if (s3->accel.cur_x_bit12) s3->accel.cx |= ~0xfff;
		s3->accel.cy   = s3->accel.cur_y;
		if (s3->accel.cur_y_bit12) s3->accel.cy |= ~0xfff;

		if (s3->accel.cmd & 0x1000) {
			s3_short_stroke_start(-1, 0, 0xffffffff, 0, s3, s3->accel.short_stroke & 0xff);
			s3_short_stroke_start(-1, 0, 0xffffffff, 0, s3, s3->accel.short_stroke >> 8);
		} else {
			s3_short_stroke_start(-1, 0, 0xffffffff, 0, s3, s3->accel.short_stroke >> 8);
			s3_short_stroke_start(-1, 0, 0xffffffff, 0, s3, s3->accel.short_stroke & 0xff);
		}
	}
}


static void
s3_accel_out_fifo_l(s3_t *s3, uint16_t port, uint32_t val)
{
	if (port == 0xb2e8 || port == 0xb148) {
		s3->accel.b2e8_pix = 1;
	} else {
		s3->accel.b2e8_pix = 0;
	}

	s3_accel_out_pixtrans_l(s3, val);
}

static void
s3_accel_write_fifo(s3_t *s3, uint32_t addr, uint8_t val)
{
    svga_t *svga = &s3->svga;

    if (s3->packed_mmio) {
	int addr_lo = addr & 1;
	if (svga->crtc[0x53] & 0x08) {
		if ((addr >= 0x08000) && (addr <= 0x0803f))
		 	s3_pci_write(0, addr & 0xff, val, s3);
	}

	switch (addr & 0x1fffe) {
		case 0x8100: addr = 0x82e8; break; /*ALT_CURXY*/
		case 0x8102: addr = 0x86e8; break;

		case 0x8104: addr = 0x82ea; break; /*ALT_CURXY2*/
		case 0x8106: addr = 0x86ea; break;

		case 0x8108: addr = 0x8ae8; break; /*ALT_STEP*/
		case 0x810a: addr = 0x8ee8; break;

		case 0x810c: addr = 0x8aea; break; /*ALT_STEP2*/
		case 0x810e: addr = 0x8eea; break;

		case 0x8110: addr = 0x92e8; break; /*ALT_ERR*/
		case 0x8112: addr = 0x92ee; break;

		case 0x8118: addr = 0x9ae8; break; /*ALT_CMD*/
		case 0x811a: addr = 0x9aea; break;

		case 0x811c: addr = 0x9ee8; break;

		case 0x8120: case 0x8122:	  /*BKGD_COLOR*/
			WRITE8(addr, s3->accel.bkgd_color, val);
			return;

		case 0x8124: case 0x8126:	  /*FRGD_COLOR*/
			WRITE8(addr, s3->accel.frgd_color, val);
			return;

		case 0x8128: case 0x812a:	  /*WRT_MASK*/
			WRITE8(addr, s3->accel.wrt_mask, val);
			return;

		case 0x812c: case 0x812e:	  /*RD_MASK*/
			WRITE8(addr, s3->accel.rd_mask, val);
			return;

		case 0x8130: case 0x8132:	  /*COLOR_CMP*/
			WRITE8(addr, s3->accel.color_cmp, val);
			return;

		case 0x8134: addr = 0xb6e8; break; /*ALT_MIX*/
		case 0x8136: addr = 0xbae8; break;

		case 0x8138:		       /*SCISSORS_T*/
			WRITE8(addr & 1, s3->accel.multifunc[1], val);
			return;
		case 0x813a:		       /*SCISSORS_L*/
			WRITE8(addr & 1, s3->accel.multifunc[2], val);
			return;
		case 0x813c:		       /*SCISSORS_B*/
			WRITE8(addr & 1, s3->accel.multifunc[3], val);
			return;
		case 0x813e:		       /*SCISSORS_R*/
			WRITE8(addr & 1, s3->accel.multifunc[4], val);
			return;

		case 0x8140:		       /*PIX_CNTL*/
			WRITE8(addr & 1, s3->accel.multifunc[0xa], val);
			return;
		case 0x8142:		       /*MULT_MISC2*/
			WRITE8(addr & 1, s3->accel.multifunc[0xd], val);
			return;
		case 0x8144:		       /*MULT_MISC*/
			WRITE8(addr & 1, s3->accel.multifunc[0xe], val);
			return;
		case 0x8146:		       /*READ_SEL*/
			WRITE8(addr & 1, s3->accel.multifunc[0xf], val);
			return;

		case 0x8148:		       /*ALT_PCNT*/
			WRITE8(addr & 1, s3->accel.multifunc[0], val);
			return;
		case 0x814a: addr = 0x96e8; break;
		case 0x814c: addr = 0x96ea; break;

		case 0x8150: addr = 0xd2e8; break;

		case 0x8154: addr = 0x8ee8; break;
		case 0x8156: addr = 0x96e8; break;

		case 0x8164: case 0x8166:
			WRITE8(addr, s3->accel.pat_bg_color, val);
			return;

		case 0x8168: addr = 0xeae8; break;
		case 0x816a: addr = 0xeaea; break;

		case 0x816c: case 0x816e:
			WRITE8(addr, s3->accel.pat_fg_color, val);
			return;
	}
	addr |= addr_lo;
    }

    if (svga->crtc[0x53] & 0x08) {
	if ((addr & 0x1ffff) < 0x8000) {
		if (s3->accel.cmd & 0x100) {
			if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
				if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40))
					s3_accel_start(8, 1, val | (val << 8) | (val << 16) | (val << 24), 0, s3);
				else
					s3_accel_start(1, 1, 0xffffffff, val | (val << 8) | (val << 16) | (val << 24), s3);
			} else
				s3_accel_start(1, 1, 0xffffffff, val | (val << 8) | (val << 16) | (val << 24), s3);
		}
	} else {
		switch (addr & 0x1ffff) {
			case 0x83b0: case 0x83b1: case 0x83b2: case 0x83b3:
			case 0x83b4: case 0x83b5: case 0x83b6: case 0x83b7:
			case 0x83b8: case 0x83b9: case 0x83ba: case 0x83bb:
			case 0x83bc: case 0x83bd: case 0x83be: case 0x83bf:
			case 0x83c0: case 0x83c1: case 0x83c2: case 0x83c3:
			case 0x83c4: case 0x83c5: case 0x83c6: case 0x83c7:
			case 0x83c8: case 0x83c9: case 0x83ca: case 0x83cb:
			case 0x83cc: case 0x83cd: case 0x83ce: case 0x83cf:
			case 0x83d0: case 0x83d1: case 0x83d2: case 0x83d3:
			case 0x83d4: case 0x83d5: case 0x83d6: case 0x83d7:
			case 0x83d8: case 0x83d9: case 0x83da: case 0x83db:
			case 0x83dc: case 0x83dd: case 0x83de: case 0x83df:
				s3_out(addr & 0x3ff, val, s3);
				break;
			case 0x8504:
				s3->subsys_stat &= ~val;
				s3_update_irqs(s3);
				break;
			case 0x8505:
				s3->subsys_cntl = val;
				s3_update_irqs(s3);
				break;
			case 0x850c:
				s3->accel.advfunc_cntl = val;
				s3_updatemapping(s3);
				break;
			case 0xff20:
				s3->serialport = val;
				i2c_gpio_set(s3->i2c, !!(val & SERIAL_PORT_SCW), !!(val & SERIAL_PORT_SDW));
				break;
			default:
				s3_accel_out_fifo(s3, addr & 0xffff, val);
				break;
		}
	}
    } else {
	if (addr & 0x8000) {
		s3_accel_out_fifo(s3, addr & 0xffff, val);
	} else {
		if (s3->accel.cmd & 0x100) {
			if ((s3->accel.cmd & 0x600) == 0x200) {
				if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
					if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40))
						s3_accel_start(16, 1, val | (val << 8) | (val << 16) | (val << 24), 0, s3);
					else
						s3_accel_start(2, 1, 0xffffffff, val | (val << 8) | (val << 16) | (val << 24), s3);
				} else
					s3_accel_start(2, 1, 0xffffffff, val | (val << 8) | (val << 16) | (val << 24), s3);
			} else {
				if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
					if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40))
						s3_accel_start(8, 1, val | (val << 8) | (val << 16) | (val << 24), 0, s3);
					else
						s3_accel_start(1, 1, 0xffffffff, val | (val << 8) | (val << 16) | (val << 24), s3);
				} else
					s3_accel_start(1, 1, 0xffffffff, val | (val << 8) | (val << 16) | (val << 24), s3);
			}
		}
	}
    }
}

static void
s3_accel_write_fifo_w(s3_t *s3, uint32_t addr, uint16_t val)
{
	svga_t *svga = &s3->svga;

	if (svga->crtc[0x53] & 0x08) {
		if ((addr & 0x1fffe) < 0x8000) {
			s3_accel_out_pixtrans_w(s3, val);
		} else {
			switch (addr & 0x1fffe) {
				case 0x83d4:
				default:
					s3_accel_write_fifo(s3, addr,     val);
					s3_accel_write_fifo(s3, addr + 1, val >> 8);
					break;
				case 0xff20:
					s3_accel_write_fifo(s3, addr, val);
					break;
				case 0x811c:
					s3_accel_out_fifo_w(s3, 0x9ee8, val);
					break;
			}
		}
	} else {
		if (addr & 0x8000) {
			if (addr == 0x811c)
				s3_accel_out_fifo_w(s3, 0x9ee8, val);
			else {
				if (addr == 0xe2e8 || addr == 0xe2ea) {
					if (s3->chip == S3_86C928 || s3->chip == S3_86C928PCI)
						s3_accel_out_pixtrans_w(s3, val);
					else {
						s3_accel_write_fifo(s3, addr,     val);
						s3_accel_write_fifo(s3, addr + 1, val >> 8);
					}
				} else {
					s3_accel_write_fifo(s3, addr,     val);
					s3_accel_write_fifo(s3, addr + 1, val >> 8);
				}
			}
		} else {
			s3_accel_out_pixtrans_w(s3, val);
		}
	}
}


static void
s3_accel_write_fifo_l(s3_t *s3, uint32_t addr, uint32_t val)
{
    svga_t *svga = &s3->svga;

    if (svga->crtc[0x53] & 0x08) {
	if ((addr & 0x1fffc) < 0x8000 || ((addr & 0x1fffc) >= 0x10000 && (addr & 0x1fffc) < 0x18000)) {
		if ((addr & 0x1fffc) >= 0x10000 && (addr & 0x1fffc) < 0x18000) {
			s3_visionx68_video_engine_op(val, s3);
		} else if ((addr & 0x1fffc) < 0x8000) {
			s3_accel_out_pixtrans_l(s3, val);
		}
	} else {
		switch (addr & 0x1fffc) {
			case 0x8180:
			s3->streams.pri_ctrl = val;
			svga_recalctimings(svga);
			svga->fullchange = changeframecount;
			break;
			case 0x8184:
			s3->streams.chroma_ctrl = val;
			break;
			case 0x8190:
			s3->streams.sec_ctrl = val;
			s3->streams.dda_horiz_accumulator = val & 0xfff;
			if (val & (1 << 11))
				s3->streams.dda_horiz_accumulator |= 0xfffff800;
			s3->streams.sdif = (val >> 24) & 7;
			break;
			case 0x8194:
			s3->streams.chroma_upper_bound = val;
			break;
			case 0x8198:
			s3->streams.sec_filter = val;
			s3->streams.k1_horiz_scale = val & 0x7ff;
			if (val & (1 << 10))
				s3->streams.k1_horiz_scale |= 0xfffff800;
			s3->streams.k2_horiz_scale = (val >> 16) & 0x7ff;
			if ((val >> 16) & (1 << 10))
				s3->streams.k2_horiz_scale |= 0xfffff800;
			break;
			case 0x81a0:
			s3->streams.blend_ctrl = val;
			break;
			case 0x81c0:
			s3->streams.pri_fb0 = val & 0x3fffff;
			svga_recalctimings(svga);
			svga->fullchange = changeframecount;
			break;
			case 0x81c4:
			s3->streams.pri_fb1 = val & 0x3fffff;
			svga_recalctimings(svga);
			svga->fullchange = changeframecount;
			break;
			case 0x81c8:
			s3->streams.pri_stride = val & 0xfff;
			svga_recalctimings(svga);
			svga->fullchange = changeframecount;
			break;
			case 0x81cc:
			s3->streams.buffer_ctrl = val;
			svga_recalctimings(svga);
			svga->fullchange = changeframecount;
			break;
			case 0x81d0:
			s3->streams.sec_fb0 = val;
			svga_recalctimings(svga);
			svga->fullchange = changeframecount;
			break;
			case 0x81d4:
			s3->streams.sec_fb1 = val;
			svga_recalctimings(svga);
			svga->fullchange = changeframecount;
			break;
			case 0x81d8:
			s3->streams.sec_stride = val;
			svga_recalctimings(svga);
			svga->fullchange = changeframecount;
			break;
			case 0x81dc:
			s3->streams.overlay_ctrl = val;
			break;
			case 0x81e0:
			s3->streams.k1_vert_scale = val & 0x7ff;
			if (val & (1 << 10))
				s3->streams.k1_vert_scale |= 0xfffff800;
			break;
			case 0x81e4:
			s3->streams.k2_vert_scale = val & 0x7ff;
			if (val & (1 << 10))
				s3->streams.k2_vert_scale |= 0xfffff800;
			break;
			case 0x81e8:
			s3->streams.dda_vert_accumulator = val & 0xfff;
			if (val & (1 << 11))
				s3->streams.dda_vert_accumulator |= 0xfffff800;
			break;
			case 0x81ec:
			s3->streams.fifo_ctrl = val;
			break;
			case 0x81f0:
			s3->streams.pri_start = val;
			s3->streams.pri_x = (val >> 16) & 0x7ff;
			s3->streams.pri_y = val & 0x7ff;
			svga_recalctimings(svga);
			svga->fullchange = changeframecount;
			break;
			case 0x81f4:
			s3->streams.pri_size = val;
			s3->streams.pri_w = (val >> 16) & 0x7ff;
			s3->streams.pri_h = val & 0x7ff;
			svga_recalctimings(svga);
			svga->fullchange = changeframecount;
			break;
			case 0x81f8:
			s3->streams.sec_start = val;
			s3->streams.sec_x = (val >> 16) & 0x7ff;
			s3->streams.sec_y = val & 0x7ff;
			svga_recalctimings(svga);
			svga->fullchange = changeframecount;
			break;
			case 0x81fc:
			s3->streams.sec_size = val;
			s3->streams.sec_w = (val >> 16) & 0x7ff;
			s3->streams.sec_h = val & 0x7ff;
			svga_recalctimings(svga);
			svga->fullchange = changeframecount;
			break;

			case 0x8504:
			s3->subsys_stat &= ~(val & 0xff);
			s3->subsys_cntl = (val >> 8);
			s3_update_irqs(s3);
			break;

			case 0x850c:
			s3->accel.advfunc_cntl = val & 0xff;
			s3_updatemapping(s3);
			break;

			case 0xff20:
			s3_accel_write_fifo(s3, addr, val);
			break;

			case 0x18080:
			s3->videoengine.nop = 1;
			break;

			case 0x18088:
			s3->videoengine.cntl = val;
			s3->videoengine.dda_init_accumulator = val & 0xfff;
			s3->videoengine.odf = (val >> 16) & 7;
			s3->videoengine.yuv = !!(val & (1 << 19));
			s3->videoengine.idf = (val >> 20) & 7;
			s3->videoengine.dither = !!(val & (1 << 29));
			s3->videoengine.dm_index = (val >> 23) & 7;
			break;

			case 0x1808c:
			s3->videoengine.stretch_filt_const = val;
			s3->videoengine.k2 = val & 0x7ff;
			s3->videoengine.k1 = (val >> 16) & 0x7ff;
			s3->videoengine.host_data = !!(val & (1 << 30));
			s3->videoengine.scale_down = !!(val & (1 << 31));
			break;

			case 0x18090:
			s3->videoengine.src_dst_step = val;
			s3->videoengine.dst_step = val & 0x1fff;
			s3->videoengine.src_step = (val >> 16) & 0x1fff;
			break;

			case 0x18094:
			s3->videoengine.crop = val;
			s3->videoengine.len = val & 0xfff;
			s3->videoengine.start = (val >> 16) & 0xfff;
			s3->videoengine.input = 1;
			break;

			case 0x18098:
			s3->videoengine.src_base = val & 0xffffff;
			break;

			case 0x1809c:
			s3->videoengine.dest_base = val & 0xffffff;
			break;

			default:
			s3_accel_write_fifo(s3, addr,     val);
			s3_accel_write_fifo(s3, addr + 1, val >> 8);
			s3_accel_write_fifo(s3, addr + 2, val >> 16);
			s3_accel_write_fifo(s3, addr + 3, val >> 24);
			break;
		}
	}
    } else {
	if (addr & 0x8000) {
		if (addr == 0xe2e8) {
			if (s3->chip == S3_86C928 || s3->chip == S3_86C928PCI)
				s3_accel_out_pixtrans_l(s3, val);
			else {
				s3_accel_write_fifo(s3, addr,     val);
				s3_accel_write_fifo(s3, addr + 1, val >> 8);
				s3_accel_write_fifo(s3, addr + 2, val >> 16);
				s3_accel_write_fifo(s3, addr + 3, val >> 24);
			}
		} else {
			s3_accel_write_fifo(s3, addr,     val);
			s3_accel_write_fifo(s3, addr + 1, val >> 8);
			s3_accel_write_fifo(s3, addr + 2, val >> 16);
			s3_accel_write_fifo(s3, addr + 3, val >> 24);
		}
	} else {
		s3_accel_out_pixtrans_l(s3, val);
	}
    }
}


static void
s3_vblank_start(svga_t *svga)
{
	s3_t *s3 = (s3_t *)svga->p;

	s3->subsys_stat |= INT_VSY;
	s3_update_irqs(s3);
}


static uint32_t
s3_hwcursor_convert_addr(svga_t *svga)
{
    if ((svga->bpp == 8) && ((svga->gdcreg[5] & 0x60) >= 0x20) && (svga->crtc[0x45] & 0x10)) {
	if ((svga->gdcreg[5] & 0x60) >= 0x40)
		return ((svga->hwcursor_latch.addr & 0xfffff1ff) | ((svga->hwcursor_latch.addr & 0x200) << 2)) | 0x600;
	else if ((svga->gdcreg[5] & 0x60) == 0x20)
		return ((svga->hwcursor_latch.addr & 0xfffff0ff) | ((svga->hwcursor_latch.addr & 0x300) << 2)) | 0x300;
	else
		return svga->hwcursor_latch.addr;
    } else
	return svga->hwcursor_latch.addr;
}



static void
s3_hwcursor_draw(svga_t *svga, int displine)
{
	s3_t *s3 = (s3_t *)svga->p;
	int x, shift = 1;
	int width = 16;
	uint16_t dat[2];
	int xx;
	int offset = svga->hwcursor_latch.x - svga->hwcursor_latch.xoff;
	uint32_t fg, bg;
	uint32_t real_addr;
	uint32_t remapped_addr;

	switch (svga->bpp)
	{
		case 15:
		fg = video_15to32[s3->hwc_fg_col & 0xffff];
		bg = video_15to32[s3->hwc_bg_col & 0xffff];
		if (s3->chip >= S3_86C928 && s3->chip <= S3_86C805) {
			if (s3->card_type != S3_MIROCRYSTAL10SD_805 && s3->card_type != S3_MIROCRYSTAL8S_805) {
				if (!(svga->crtc[0x45] & 0x04)) {
					shift = 2;
					width = 8;
				}
			}
		}
		break;

		case 16:
		fg = video_16to32[s3->hwc_fg_col & 0xffff];
		bg = video_16to32[s3->hwc_bg_col & 0xffff];
		if (s3->chip >= S3_86C928 && s3->chip <= S3_86C805) {
			if (s3->card_type != S3_MIROCRYSTAL10SD_805 && s3->card_type != S3_MIROCRYSTAL8S_805) {
				if (!(svga->crtc[0x45] & 0x04)) {
					shift = 2;
					width = 8;
				}
			} else if (s3->card_type == S3_MIROCRYSTAL10SD_805) {
				if (!(svga->crtc[0x45] & 0x04)) {
					offset <<= 1;
				}
			}
		}
		break;

		case 24:
		fg = s3->hwc_fg_col;
		bg = s3->hwc_bg_col;
		break;

		case 32:
		fg = s3->hwc_fg_col;
		bg = s3->hwc_bg_col;
		break;

		default:
		if (s3->chip >= S3_TRIO32)
		{
			fg = svga->pallook[s3->hwc_fg_col & 0xff];
			bg = svga->pallook[s3->hwc_bg_col & 0xff];
		}
		else
		{
			fg = svga->pallook[svga->crtc[0xe]];
			bg = svga->pallook[svga->crtc[0xf]];
		}
		break;
	}

	if (svga->interlace && svga->hwcursor_oddeven)
		svga->hwcursor_latch.addr += 16;

	real_addr = s3_hwcursor_convert_addr(svga);

	for (x = 0; x < 64; x += 16)
	{
		remapped_addr = dword_remap(svga, real_addr);

		dat[0] = (svga->vram[remapped_addr & s3->vram_mask] << 8) | svga->vram[(remapped_addr + 1) & s3->vram_mask];
		dat[1] = (svga->vram[(remapped_addr + 2) & s3->vram_mask] << 8) | svga->vram[(remapped_addr + 3) & s3->vram_mask];

                if (svga->crtc[0x55] & 0x10) {
                        /*X11*/
                        for (xx = 0; xx < 16; xx++) {
                                if (offset >= 0) {
                                        if (dat[0] & 0x8000)
						buffer32->line[displine][offset + svga->x_add]  = (dat[1] & 0x8000) ? fg : bg;
                                }

                                offset++;
                                dat[0] <<= shift;
                                dat[1] <<= shift;
                        }
                } else {
                        /*Windows*/
                        for (xx = 0; xx < width; xx++) {
                                if (offset >= 0) {
                                        if (!(dat[0] & 0x8000))
						buffer32->line[displine][offset + svga->x_add]  = (dat[1] & 0x8000) ? fg : bg;
                                        else if (dat[1] & 0x8000)
						buffer32->line[displine][offset + svga->x_add] ^= 0xffffff;
				}

                                offset++;
                                dat[0] <<= shift;
                                dat[1] <<= shift;
                        }
                }
		svga->hwcursor_latch.addr += 4;
		real_addr = s3_hwcursor_convert_addr(svga);
	}
	if (svga->interlace && !svga->hwcursor_oddeven)
		svga->hwcursor_latch.addr += 16;
}

#define CLAMP(x) do                                     \
        {                                               \
                if ((x) & ~0xff)                        \
                        x = ((x) < 0) ? 0 : 0xff;       \
        }                               \
        while (0)

#define DECODE_YCbCr()                                                  \
        do                                                              \
        {                                                               \
                int c;                                                  \
                                                                        \
                for (c = 0; c < 2; c++)                                 \
                {                                                       \
                        uint8_t y1, y2;                                 \
                        int8_t Cr, Cb;                                  \
                        int dR, dG, dB;                                 \
                                                                        \
                        y1 = src[0];                                    \
                        Cr = src[1] - 0x80;                             \
                        y2 = src[2];                                    \
                        Cb = src[3] - 0x80;                             \
                        src += 4;                                       \
                                                                        \
                        dR = (359*Cr) >> 8;                             \
                        dG = (88*Cb + 183*Cr) >> 8;                     \
                        dB = (453*Cb) >> 8;                             \
                                                                        \
                        r[x_write] = y1 + dR;                           \
                        CLAMP(r[x_write]);                              \
                        g[x_write] = y1 - dG;                           \
                        CLAMP(g[x_write]);                              \
                        b[x_write] = y1 + dB;                           \
                        CLAMP(b[x_write]);                              \
                                                                        \
                        r[x_write+1] = y2 + dR;                         \
                        CLAMP(r[x_write+1]);                            \
                        g[x_write+1] = y2 - dG;                         \
                        CLAMP(g[x_write+1]);                            \
                        b[x_write+1] = y2 + dB;                         \
                        CLAMP(b[x_write+1]);                            \
                                                                        \
                        x_write = (x_write + 2) & 7;                    \
                }                                                       \
        } while (0)

/*Both YUV formats are untested*/
#define DECODE_YUV211()                                         \
        do                                                      \
        {                                                       \
                uint8_t y1, y2, y3, y4;                         \
                int8_t U, V;                                    \
                int dR, dG, dB;                                 \
                                                                \
                U = src[0] - 0x80;                              \
                y1 = (298 * (src[1] - 16)) >> 8;                \
                y2 = (298 * (src[2] - 16)) >> 8;                \
                V = src[3] - 0x80;                              \
                y3 = (298 * (src[4] - 16)) >> 8;                \
                y4 = (298 * (src[5] - 16)) >> 8;                \
                src += 6;                                       \
                                                                \
                dR = (309*V) >> 8;                              \
                dG = (100*U + 208*V) >> 8;                      \
                dB = (516*U) >> 8;                              \
                                                                \
                r[x_write] = y1 + dR;                           \
                CLAMP(r[x_write]);                              \
                g[x_write] = y1 - dG;                           \
                CLAMP(g[x_write]);                              \
                b[x_write] = y1 + dB;                           \
                CLAMP(b[x_write]);                              \
                                                                \
                r[x_write+1] = y2 + dR;                         \
                CLAMP(r[x_write+1]);                            \
                g[x_write+1] = y2 - dG;                         \
                CLAMP(g[x_write+1]);                            \
                b[x_write+1] = y2 + dB;                         \
                CLAMP(b[x_write+1]);                            \
                                                                \
                r[x_write+2] = y3 + dR;                         \
                CLAMP(r[x_write+2]);                            \
                g[x_write+2] = y3 - dG;                         \
                CLAMP(g[x_write+2]);                            \
                b[x_write+2] = y3 + dB;                         \
                CLAMP(b[x_write+2]);                            \
                                                                \
                r[x_write+3] = y4 + dR;                         \
                CLAMP(r[x_write+3]);                            \
                g[x_write+3] = y4 - dG;                         \
                CLAMP(g[x_write+3]);                            \
                b[x_write+3] = y4 + dB;                         \
                CLAMP(b[x_write+3]);                            \
                                                                \
                x_write = (x_write + 4) & 7;                    \
        } while (0)

#define DECODE_YUV422()                                                 \
        do                                                              \
        {                                                               \
                int c;                                                  \
                                                                        \
                for (c = 0; c < 2; c++)                                 \
                {                                                       \
                        uint8_t y1, y2;                                 \
                        int8_t U, V;                                    \
                        int dR, dG, dB;                                 \
                                                                        \
                        U = src[0] - 0x80;                              \
                        y1 = (298 * (src[1] - 16)) >> 8;                \
                        V = src[2] - 0x80;                              \
                        y2 = (298 * (src[3] - 16)) >> 8;                \
                        src += 4;                                       \
                                                                        \
                        dR = (309*V) >> 8;                              \
                        dG = (100*U + 208*V) >> 8;                      \
                        dB = (516*U) >> 8;                              \
                                                                        \
                        r[x_write] = y1 + dR;                           \
                        CLAMP(r[x_write]);                              \
                        g[x_write] = y1 - dG;                           \
                        CLAMP(g[x_write]);                              \
                        b[x_write] = y1 + dB;                           \
                        CLAMP(b[x_write]);                              \
                                                                        \
                        r[x_write+1] = y2 + dR;                         \
                        CLAMP(r[x_write+1]);                            \
                        g[x_write+1] = y2 - dG;                         \
                        CLAMP(g[x_write+1]);                            \
                        b[x_write+1] = y2 + dB;                         \
                        CLAMP(b[x_write+1]);                            \
                                                                        \
                        x_write = (x_write + 2) & 7;                    \
                }                                                       \
        } while (0)

#define DECODE_RGB555()                                                 \
        do                                                              \
        {                                                               \
                int c;                                                  \
                                                                        \
                for (c = 0; c < 4; c++)                                 \
                {                                                       \
                        uint16_t dat;                                   \
                                                                        \
                        dat = *(uint16_t *)src;                         \
                        src += 2;                                       \
                                                                        \
                        r[x_write + c] = ((dat & 0x001f) << 3) | ((dat & 0x001f) >> 2); \
                        g[x_write + c] = ((dat & 0x03e0) >> 2) | ((dat & 0x03e0) >> 7); \
                        b[x_write + c] = ((dat & 0x7c00) >> 7) | ((dat & 0x7c00) >> 12); \
                }                                                       \
                x_write = (x_write + 4) & 7;                            \
        } while (0)

#define DECODE_RGB565()                                                 \
        do                                                              \
        {                                                               \
                int c;                                                  \
                                                                        \
                for (c = 0; c < 4; c++)                                 \
                {                                                       \
                        uint16_t dat;                                   \
                                                                        \
                        dat = *(uint16_t *)src;                         \
                        src += 2;                                       \
                                                                        \
                        r[x_write + c] = ((dat & 0x001f) << 3) | ((dat & 0x001f) >> 2); \
                        g[x_write + c] = ((dat & 0x07e0) >> 3) | ((dat & 0x07e0) >> 9); \
                        b[x_write + c] = ((dat & 0xf800) >> 8) | ((dat & 0xf800) >> 13); \
                }                                                       \
                x_write = (x_write + 4) & 7;                            \
        } while (0)

#define DECODE_RGB888()                                                 \
        do                                                              \
        {                                                               \
                int c;                                                  \
                                                                        \
                for (c = 0; c < 4; c++)                                 \
                {                                                       \
                        r[x_write + c] = src[0];                        \
                        g[x_write + c] = src[1];                        \
                        b[x_write + c] = src[2];                        \
                        src += 3;                                       \
                }                                                       \
                x_write = (x_write + 4) & 7;                            \
        } while (0)

#define DECODE_XRGB8888()                                               \
        do                                                              \
        {                                                               \
                int c;                                                  \
                                                                        \
                for (c = 0; c < 4; c++)                                 \
                {                                                       \
                        r[x_write + c] = src[0];                        \
                        g[x_write + c] = src[1];                        \
                        b[x_write + c] = src[2];                        \
                        src += 4;                                       \
                }                                                       \
                x_write = (x_write + 4) & 7;                            \
        } while (0)

#define OVERLAY_SAMPLE()                        \
        do                                      \
        {                                       \
                switch (s3->streams.sdif)    \
                {                               \
                        case 1:                 \
                        DECODE_YCbCr();         \
                        break;                  \
                        case 2:                 \
                        DECODE_YUV422();        \
                        break;                  \
                        case 3:                 \
                        DECODE_RGB555();        \
                        break;                  \
                        case 4:                 \
                        DECODE_YUV211();        \
                        break;                  \
                        case 5:                 \
                        DECODE_RGB565();        \
                        break;                  \
                        case 6:                 \
                        DECODE_RGB888();        \
                        break;                  \
                        case 7:                 \
                        default:                \
                        DECODE_XRGB8888();      \
                        break;                  \
                }                               \
        } while (0)


static void s3_trio64v_overlay_draw(svga_t *svga, int displine)
{
        s3_t *s3 = (s3_t *)svga->p;
        int offset = (s3->streams.sec_x - s3->streams.pri_x) + 1;
        int h_acc = s3->streams.dda_horiz_accumulator;
        int r[8], g[8], b[8];
        int x_size, x_read = 4, x_write = 4;
        int x;
        uint32_t *p;
        uint8_t *src = &svga->vram[svga->overlay_latch.addr];

        p = &(buffer32->line[displine][offset + svga->x_add]);

        if ((offset + s3->streams.sec_w) > s3->streams.pri_w)
                x_size = (s3->streams.pri_w - s3->streams.sec_x) + 1;
        else
                x_size = s3->streams.sec_w + 1;

        OVERLAY_SAMPLE();

        for (x = 0; x < x_size; x++)
        {
                *p++ = r[x_read] | (g[x_read] << 8) | (b[x_read] << 16);

                h_acc += s3->streams.k1_horiz_scale;
                if (h_acc >= 0)
                {
                        if ((x_read ^ (x_read + 1)) & ~3)
                                OVERLAY_SAMPLE();
                        x_read = (x_read + 1) & 7;

                        h_acc += (s3->streams.k2_horiz_scale - s3->streams.k1_horiz_scale);
                }
        }

        svga->overlay_latch.v_acc += s3->streams.k1_vert_scale;
        if (svga->overlay_latch.v_acc >= 0)
        {
                svga->overlay_latch.v_acc += (s3->streams.k2_vert_scale - s3->streams.k1_vert_scale);
                svga->overlay_latch.addr += s3->streams.sec_stride;
        }
}

static void
s3_io_remove_alt(s3_t *s3)
{
	if (!s3->translate)
		return;

	io_removehandler(0x4148, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0x4548, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0x4948, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
        io_removehandler(0x8148, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
        io_removehandler(0x8548, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
        io_removehandler(0x8948, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
        io_removehandler(0x8d48, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
        io_removehandler(0x9148, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
        io_removehandler(0x9548, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0x9948, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0x9d48, 0x0002, s3_accel_in, s3_accel_in_w, NULL, s3_accel_out, s3_accel_out_w, NULL,  s3);
	io_removehandler(0xa148, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xa548, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xa948, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xad48, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	if (s3->chip >= S3_86C928)
		io_removehandler(0xb148, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	else
		io_removehandler(0xb148, 0x0002, s3_accel_in, s3_accel_in_w, NULL, s3_accel_out, s3_accel_out_w, s3_accel_out_l,  s3);
	io_removehandler(0xb548, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xb948, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xbd48, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xd148, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xe148, 0x0004, s3_accel_in, s3_accel_in_w, s3_accel_in_l, s3_accel_out, s3_accel_out_w, s3_accel_out_l,  s3);
	io_removehandler(0xe548, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xe948, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xed48, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
}

static void
s3_io_remove(s3_t *s3)
{
	io_removehandler(0x03c0, 0x0020, s3_in, NULL, NULL, s3_out, NULL, NULL, s3);

	io_removehandler(0x42e8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0x46e8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0x4ae8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
        io_removehandler(0x82e8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
        io_removehandler(0x86e8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
        io_removehandler(0x8ae8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
        io_removehandler(0x8ee8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
        io_removehandler(0x92e8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
        io_removehandler(0x96e8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0x9ae8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0x9ee8, 0x0002, s3_accel_in, s3_accel_in_w, NULL, s3_accel_out, s3_accel_out_w, NULL,  s3);
	io_removehandler(0xa2e8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xa6e8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xaae8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xaee8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	if (s3->chip >= S3_86C928)
		io_removehandler(0xb2e8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	else
		io_removehandler(0xb2e8, 0x0002, s3_accel_in, s3_accel_in_w, NULL, s3_accel_out, s3_accel_out_w, s3_accel_out_l,  s3);
	io_removehandler(0xb6e8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xbae8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xbee8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xcae8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xd2e8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xe2e8, 0x0004, s3_accel_in, s3_accel_in_w, s3_accel_in_l, s3_accel_out, s3_accel_out_w, s3_accel_out_l,  s3);
	io_removehandler(0xe6e8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xeae8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xeee8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_removehandler(0xfee8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);

	s3_io_remove_alt(s3);
}

static void
s3_io_set_alt(s3_t *s3)
{
	svga_t *svga = &s3->svga;

	if (!s3->translate)
		return;

	if ((s3->chip == S3_VISION968 || s3->chip == S3_VISION868) && (svga->seqregs[9] & 0x80)) {
		return;
	}

	io_sethandler(0x4148, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0x4548, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0x4948, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	if (s3->chip == S3_TRIO64 || s3->chip >= S3_TRIO64V || s3->chip == S3_VISION968 || s3->chip == S3_VISION868)
	{
		io_sethandler(0x8148, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x8548, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x8948, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x8d48, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x9148, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x9548, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	}
	else
	{
		io_sethandler(0x8148, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x8548, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x8948, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x8d48, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x9148, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x9548, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	}
	if (s3->chip == S3_VISION968 || s3->chip == S3_VISION868)
		io_sethandler(0x9948, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	else
		io_sethandler(0x9948, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0x9d48, 0x0002, s3_accel_in, s3_accel_in_w, NULL, s3_accel_out, s3_accel_out_w, NULL,  s3);
	io_sethandler(0xa148, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0xa548, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0xa948, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0xad48, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	if (s3->chip >= S3_86C928)
		io_sethandler(0xb148, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	else
		io_sethandler(0xb148, 0x0002, s3_accel_in, s3_accel_in_w, NULL, s3_accel_out, s3_accel_out_w, s3_accel_out_l,  s3);
	io_sethandler(0xb548, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0xb948, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0xbd48, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0xe148, 0x0004, s3_accel_in, s3_accel_in_w, s3_accel_in_l, s3_accel_out, s3_accel_out_w, s3_accel_out_l,  s3);
	if (s3->chip == S3_VISION968 || s3->chip == S3_VISION868) {
		io_sethandler(0xd148, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0xe548, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0xe948, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0xed48, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	}
}

static void
s3_io_set(s3_t *s3)
{
	svga_t *svga = &s3->svga;

	s3_io_remove(s3);

	io_sethandler(0x03c0, 0x0020, s3_in, NULL, NULL, s3_out, NULL, NULL, s3);

	if ((s3->chip == S3_VISION968 || s3->chip == S3_VISION868) && (svga->seqregs[9] & 0x80)) {
		return;
	}

	io_sethandler(0x42e8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0x46e8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0x4ae8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	if (s3->chip == S3_TRIO64 || s3->chip >= S3_TRIO64V || s3->chip == S3_VISION968 || s3->chip == S3_VISION868)
	{
		io_sethandler(0x82e8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x86e8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x8ae8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x8ee8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x92e8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x96e8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	}
	else
	{
		io_sethandler(0x82e8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x86e8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x8ae8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x8ee8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x92e8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0x96e8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	}
	if (s3->chip == S3_VISION968 || s3->chip == S3_VISION868)
		io_sethandler(0x9ae8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	else
		io_sethandler(0x9ae8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0x9ee8, 0x0002, s3_accel_in, s3_accel_in_w, NULL, s3_accel_out, s3_accel_out_w, NULL,  s3);
	io_sethandler(0xa2e8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0xa6e8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0xaae8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0xaee8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	if (s3->chip >= S3_86C928)
		io_sethandler(0xb2e8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	else
		io_sethandler(0xb2e8, 0x0002, s3_accel_in, s3_accel_in_w, NULL, s3_accel_out, s3_accel_out_w, s3_accel_out_l,  s3);
	io_sethandler(0xb6e8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0xbae8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0xbee8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0xcae8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	io_sethandler(0xe2e8, 0x0004, s3_accel_in, s3_accel_in_w, s3_accel_in_l, s3_accel_out, s3_accel_out_w, s3_accel_out_l,  s3);
	if (s3->chip == S3_VISION968 || s3->chip == S3_VISION868) {
		io_sethandler(0xd2e8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0xe6e8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0xeae8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
		io_sethandler(0xeee8, 0x0004, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);
	}
	io_sethandler(0xfee8, 0x0002, s3_accel_in, NULL, NULL, s3_accel_out, NULL, NULL,  s3);

	s3_io_set_alt(s3);
}

static void
s3_out(uint16_t addr, uint8_t val, void *p)
{
	s3_t *s3 = (s3_t *)p;
	svga_t *svga = &s3->svga;
	uint8_t old, mask;
	int rs2, rs3;

	if (((addr & 0xfff0) == 0x3d0 || (addr & 0xfff0) == 0x3b0) && !(svga->miscout & 1))
		addr ^= 0x60;

	switch (addr)
	{
		case 0x3c2:
		if ((s3->chip == S3_VISION964) || (s3->chip == S3_VISION968) || (s3->chip == S3_86C928)) {
			if ((s3->card_type != S3_SPEA_MERCURY_P64V) && (s3->card_type != S3_MIROVIDEO40SV_ERGO_968)) {
				if (((val >> 2) & 3) != 3)
							icd2061_write(svga->clock_gen, (val >> 2) & 3);
			}
		}
                break;

		case 0x3c5:
		if (svga->seqaddr >= 0x10 && svga->seqaddr < 0x20)
		{
			svga->seqregs[svga->seqaddr] = val;
			switch (svga->seqaddr)
			{
				case 0x12: case 0x13:
				svga_recalctimings(svga);
				return;
			}
		}
		if (svga->seqaddr == 4) /*Chain-4 - update banking*/
		{
			if (val & 0x08)
				svga->write_bank = svga->read_bank = s3->bank << 16;
			else
				svga->write_bank = svga->read_bank = s3->bank << 14;
		} else if (svga->seqaddr == 9) {
			svga->seqregs[svga->seqaddr] = val & 0x80;
			s3_io_set(s3);
			return;
		} else if (svga->seqaddr == 0xa) {
			svga->seqregs[svga->seqaddr] = val & 0x80;
			return;
		} else if (s3->chip >= S3_VISION964) {
			if (svga->seqaddr == 0x08) {
				svga->seqregs[svga->seqaddr] = val & 0x0f;
				return;
			} else if ((svga->seqaddr == 0x0d) && (svga->seqregs[0x08] == 0x06)) {
				svga->seqregs[svga->seqaddr] = val;
				svga->dpms = ((s3->chip >= S3_VISION964) && (svga->seqregs[0x0d] & 0x50)) || (svga->crtc[0x56] & ((s3->chip >= S3_TRIO32) ? 0x06 : 0x20));
				svga_recalctimings(svga);
				return;
			}
		}
		break;

		case 0x3C6: case 0x3C7: case 0x3C8: case 0x3C9:
		if ((svga->crtc[0x55] & 0x03) == 0x00)
			rs2 = !!(svga->crtc[0x43] & 0x02);
		else
			rs2 = (svga->crtc[0x55] & 0x01);
		if (s3->chip >= S3_TRIO32)
			svga_out(addr, val, svga);
		else if ((s3->chip == S3_VISION964 && s3->card_type != S3_ELSAWIN2KPROX_964) || (s3->chip == S3_86C928)) {
			if (!(svga->crtc[0x45] & 0x20) || (s3->chip == S3_86C928))
				rs3 = !!(svga->crtc[0x55] & 0x02);
			else
				rs3 = 0;
			bt48x_ramdac_out(addr, rs2, rs3, val, svga->ramdac, svga);
		} else if ((s3->chip == S3_VISION964 && s3->card_type == S3_ELSAWIN2KPROX_964) || (s3->chip == S3_VISION968 && (s3->card_type == S3_ELSAWIN2KPROX ||
					s3->card_type == S3_PHOENIX_VISION968 || s3->card_type == S3_NUMBER9_9FX_771)))
			ibm_rgb528_ramdac_out(addr, rs2, val, svga->ramdac, svga);
		else if ((s3->chip == S3_VISION968 && (s3->card_type == S3_SPEA_MERCURY_P64V || s3->card_type == S3_MIROVIDEO40SV_ERGO_968))) {
			rs3 = !!(svga->crtc[0x55] & 0x02);
			tvp3026_ramdac_out(addr, rs2, rs3, val, svga->ramdac, svga);
		} else if (((s3->chip == S3_86C801) || (s3->chip == S3_86C805)) && (s3->card_type != S3_MIROCRYSTAL10SD_805 && s3->card_type != S3_MIROCRYSTAL8S_805))
			att49x_ramdac_out(addr, rs2, val, svga->ramdac, svga);
		else if (s3->chip <= S3_86C924) {
			sc1148x_ramdac_out(addr, rs2, val, svga->ramdac, svga);
		} else if (s3->card_type == S3_NUMBER9_9FX_531)
			att498_ramdac_out(addr, rs2, val, svga->ramdac, svga);
		else if ((s3->chip == S3_86C928PCI) && (s3->card_type == S3_SPEA_MERCURY_LITE_PCI))
			sc1502x_ramdac_out(addr, val, svga->ramdac, svga);
		else
			sdac_ramdac_out(addr, rs2, val, svga->ramdac, svga);
		return;

		case 0x3D4:
		svga->crtcreg = (s3->chip == S3_TRIO64V2) ? val : (val & 0x7f);
		return;
		case 0x3D5:
		if ((svga->crtcreg < 7) && (svga->crtc[0x11] & 0x80))
			return;
		if ((svga->crtcreg == 7) && (svga->crtc[0x11] & 0x80))
			val = (svga->crtc[7] & ~0x10) | (val & 0x10);
		if ((svga->crtcreg >= 0x20) && (svga->crtcreg < 0x40) &&
		    (svga->crtcreg != 0x36) && (svga->crtcreg != 0x38) &&
		    (svga->crtcreg != 0x39) && ((svga->crtc[0x38] & 0xcc) != 0x48))
			return;
		if ((svga->crtcreg >= 0x40) && ((svga->crtc[0x39] & 0xe0) != 0xa0))
			return;
		if ((svga->crtcreg == 0x36) && (svga->crtc[0x39] != 0xa5))
			return;
		if ((s3->chip == S3_TRIO64V2) && (svga->crtcreg >= 0x80))
			return;
		if ((s3->chip <= S3_86C924) && (svga->crtcreg >= 0x50))
			return;
		old = svga->crtc[svga->crtcreg];
		svga->crtc[svga->crtcreg] = val;

		switch (svga->crtcreg)
		{
			case 0x31:
			s3->ma_ext = (s3->ma_ext & 0x1c) | ((val & 0x30) >> 4);
			svga->force_dword_mode = !!(val & 0x08);
			break;
			case 0x32:
			if ((svga->crtc[0x31] & 0x30) && (svga->crtc[0x51] & 0x01) && (val & 0x40))
				svga->vram_display_mask = 0x3ffff;
			else
				svga->vram_display_mask = s3->vram_mask;
			break;

			case 0x40:
			s3->enable_8514 = (val & 0x01);
			break;

			case 0x50:
			mask = 0xc0;
			if (s3->chip != S3_86C801)
				mask |= 0x01;
			switch (svga->crtc[0x50] & mask)
			{
				case 0x00: s3->width = (svga->crtc[0x31] & 2) ? 2048 : 1024; break;
				case 0x01: s3->width = 1152; break;
				case 0x40: s3->width = 640;  break;
				case 0x80: s3->width = ((s3->chip > S3_86C805) && (s3->accel.advfunc_cntl & 4)) ? 1600 : 800;  break;
				case 0x81: s3->width = 1600; break;
				case 0xc0: s3->width = 1280; break;
			}
			s3->bpp = (svga->crtc[0x50] >> 4) & 3;
			break;

			case 0x5c:
			if ((val & 0xa0) == 0x80)
				i2c_gpio_set(s3->i2c, !!(val & 0x40), !!(val & 0x10));
			if (s3->card_type == S3_PHOENIX_VISION868 || s3->card_type == S3_PHOENIX_VISION968) {
				if ((val & 0x20) && (!(svga->crtc[0x55] & 0x01) && !(svga->crtc[0x43] & 2)))
					svga->dac_addr |= 0x20;
			} else if (s3->card_type == S3_MIROVIDEO40SV_ERGO_968) {
				if ((val & 0x80) && (!(svga->crtc[0x55] & 0x01) && !(svga->crtc[0x43] & 2)))
					svga->dac_addr |= 0x02;
			}
			break;

			case 0x69:
			if (s3->chip >= S3_VISION964)
				s3->ma_ext = val & 0x1f;
			break;

			case 0x35:
			s3->bank = (s3->bank & 0x70) | (val & 0xf);
			if (svga->chain4)
				svga->write_bank = svga->read_bank = s3->bank << 16;
			else
				svga->write_bank = svga->read_bank = s3->bank << 14;
			break;

			case 0x51:
			if (s3->chip == S3_86C801 || s3->chip == S3_86C805) {
				s3->bank = (s3->bank & 0x6f) | ((val & 0x4) << 2);
				s3->ma_ext = (s3->ma_ext & ~0x4) | ((val & 1) << 2);
			} else {
				s3->bank = (s3->bank & 0x4f) | ((val & 0xc) << 2);
				s3->ma_ext = (s3->ma_ext & ~0xc) | ((val & 3) << 2);
			}
			if (svga->chain4)
				svga->write_bank = svga->read_bank = s3->bank << 16;
			else
				svga->write_bank = svga->read_bank = s3->bank << 14;
			break;

			case 0x6a:
			if (s3->chip >= S3_VISION964) {
				s3->bank = val;
				if (svga->chain4)
					svga->write_bank = svga->read_bank = s3->bank << 16;
				else
					svga->write_bank = svga->read_bank = s3->bank << 14;
			}
			break;

			case 0x45:
			if (s3->chip == S3_VISION964 || s3->chip == S3_VISION968)
				break;
			svga->hwcursor.ena = val & 1;
			break;
			case 0x46: case 0x47: case 0x48: case 0x49:
			case 0x4c: case 0x4d: case 0x4e: case 0x4f:
			if (s3->chip == S3_VISION964 || s3->chip == S3_VISION968)
				break;
			svga->hwcursor.x = ((svga->crtc[0x46] << 8) | svga->crtc[0x47]) & 0x7ff;
			if (svga->bpp == 32) svga->hwcursor.x >>= 1;
			svga->hwcursor.y = ((svga->crtc[0x48] << 8) | svga->crtc[0x49]) & 0x7ff;
			svga->hwcursor.xoff = svga->crtc[0x4e] & 0x3f;
			svga->hwcursor.yoff = svga->crtc[0x4f] & 0x3f;
			svga->hwcursor.addr = ((((svga->crtc[0x4c] << 8) | svga->crtc[0x4d]) & 0xfff) * 1024) + (svga->hwcursor.yoff * 16);
			if ((s3->chip >= S3_TRIO32) && svga->bpp == 32)
				svga->hwcursor.x <<= 1;
			else if ((s3->chip >= S3_86C928 && s3->chip <= S3_86C805) && (svga->bpp == 15 || svga->bpp == 16)) {
				if ((s3->card_type == S3_MIROCRYSTAL10SD_805) && !(svga->crtc[0x45] & 0x04) && svga->bpp == 16)
					svga->hwcursor.x >>= 2;
				else
					svga->hwcursor.x >>= 1;
			} else if ((s3->chip >= S3_86C928 && s3->chip <= S3_86C805) && (svga->bpp == 24))
				svga->hwcursor.x /= 3;
			break;

			case 0x4a:
			switch (s3->hwc_col_stack_pos)
			{
				case 0:
				s3->hwc_fg_col = (s3->hwc_fg_col & 0xffff00) | val;
				break;
				case 1:
				s3->hwc_fg_col = (s3->hwc_fg_col & 0xff00ff) | (val << 8);
				break;
				case 2:
				s3->hwc_fg_col = (s3->hwc_fg_col & 0x00ffff) | (val << 16);
				break;
			}
			s3->hwc_col_stack_pos = (s3->hwc_col_stack_pos + 1) & 3;
			break;
			case 0x4b:
			switch (s3->hwc_col_stack_pos)
			{
				case 0:
				s3->hwc_bg_col = (s3->hwc_bg_col & 0xffff00) | val;
				break;
				case 1:
				s3->hwc_bg_col = (s3->hwc_bg_col & 0xff00ff) | (val << 8);
				break;
				case 2:
				s3->hwc_bg_col = (s3->hwc_bg_col & 0x00ffff) | (val << 16);
				break;
			}
			s3->hwc_col_stack_pos = (s3->hwc_col_stack_pos + 1) & 3;
			break;

			case 0x53:
			case 0x58: case 0x59: case 0x5a:
			s3_updatemapping(s3);
			break;

			case 0x55:
			if (s3->chip == S3_86C928) {
				if ((val & 0x08) || ((val & 0x20) == 0x20)) {
					svga->hwcursor_draw = NULL;
					svga->dac_hwcursor_draw = bt48x_hwcursor_draw;
				} else {
					svga->hwcursor_draw = s3_hwcursor_draw;
					svga->dac_hwcursor_draw = NULL;
				}
			}
			break;

			case 0x42:
			if ((s3->chip == S3_VISION964) || (s3->chip == S3_VISION968) || (s3->chip == S3_86C928)) {
				if (((svga->miscout >> 2) & 3) == 3)
	        	        	icd2061_write(svga->clock_gen, svga->crtc[0x42] & 0x0f);
			}
			break;

			case 0x43:
			if (s3->chip < S3_VISION964) {
				s3_io_remove_alt(s3);
				s3->translate = !!(val & 0x10);
				s3_io_set_alt(s3);
			}
			break;

                        case 0x56:
                        svga->dpms = ((s3->chip >= S3_VISION964) && (svga->seqregs[0x0d] & 0x50)) || (svga->crtc[0x56] & ((s3->chip >= S3_TRIO32) ? 0x06 : 0x20));
                        old = ~val; /* force recalc */
                        break;

			case 0x67:
			if (s3->chip >= S3_TRIO32) {
				switch (val >> 4)
				{
					case 3:  svga->bpp = 15; break;
					case 5:  svga->bpp = 16; break;
					case 7:  svga->bpp = 24; break;
					case 13: svga->bpp = 32; break;
					default: svga->bpp = 8;  break;
				}
			}
		 	break;
		}
               if (old != val)
                {
                        if (svga->crtcreg < 0xe || svga->crtcreg > 0x10)
                        {
				if ((svga->crtcreg == 0xc) || (svga->crtcreg == 0xd)) {
                                	svga->fullchange = 3;
					svga->ma_latch = ((svga->crtc[0xc] << 8) | svga->crtc[0xd]) + ((svga->crtc[8] & 0x60) >> 5);
						if ((((svga->crtc[0x67] & 0xc) != 0xc) && (s3->chip >= S3_TRIO64V)) || (s3->chip < S3_TRIO64V))
							svga->ma_latch |= (s3->ma_ext << 16);
				} else {
					svga->fullchange = changeframecount;
	                                svga_recalctimings(svga);
				}
                        }
                }
		break;
	}
	svga_out(addr, val, svga);
}

static uint8_t
s3_in(uint16_t addr, void *p)
{
	s3_t *s3 = (s3_t *)p;
	svga_t *svga = &s3->svga;
	int rs2, rs3;
	uint8_t temp;

	if (((addr & 0xfff0) == 0x3d0 || (addr & 0xfff0) == 0x3b0) && !(svga->miscout & 1))
		addr ^= 0x60;

	switch (addr)
	{
		case 0x3c1:
		if (svga->attraddr > 0x14)
			return 0xff;
		break;

		case 0x3c2:
		if (s3->chip <= S3_86C924)
			return svga_in(addr, svga) | 0x10;
		break;

		case 0x3c5:
		if (svga->seqaddr >= 0x10 && svga->seqaddr < 0x20) {
			temp = svga->seqregs[svga->seqaddr];
			/* This is needed for the Intel Advanced/ATX's built-in S3 Trio64V+ BIOS to not
			   get stuck in an infinite loop. */
			if ((s3->card_type == S3_PHOENIX_TRIO64VPLUS_ONBOARD) && (svga->seqaddr == 0x17))
				svga->seqregs[svga->seqaddr] ^= 0x01;
			return temp;
		}
		break;

		case 0x3c6: case 0x3c7: case 0x3c8: case 0x3c9:
		rs2 = (svga->crtc[0x55] & 0x01) || !!(svga->crtc[0x43] & 2);
		if (s3->chip >= S3_TRIO32)
			return svga_in(addr, svga);
		else if ((s3->chip == S3_VISION964 && s3->card_type != S3_ELSAWIN2KPROX_964) || (s3->chip == S3_86C928)) {
			rs3 = !!(svga->crtc[0x55] & 0x02);
			return bt48x_ramdac_in(addr, rs2, rs3, svga->ramdac, svga);
		} else if ((s3->chip == S3_VISION964 && s3->card_type == S3_ELSAWIN2KPROX_964) || (s3->chip == S3_VISION968 && (s3->card_type == S3_ELSAWIN2KPROX ||
					s3->card_type == S3_PHOENIX_VISION968 || s3->card_type == S3_NUMBER9_9FX_771)))
			return ibm_rgb528_ramdac_in(addr, rs2, svga->ramdac, svga);
		else if ((s3->chip == S3_VISION968 && (s3->card_type == S3_SPEA_MERCURY_P64V || s3->card_type == S3_MIROVIDEO40SV_ERGO_968))) {
			rs3 = !!(svga->crtc[0x55] & 0x02);
			return tvp3026_ramdac_in(addr, rs2, rs3, svga->ramdac, svga);
		} else if (((s3->chip == S3_86C801) || (s3->chip == S3_86C805)) && (s3->card_type != S3_MIROCRYSTAL10SD_805 && s3->card_type != S3_MIROCRYSTAL8S_805))
			return att49x_ramdac_in(addr, rs2, svga->ramdac, svga);
		else if (s3->chip <= S3_86C924)
			return sc1148x_ramdac_in(addr, rs2, svga->ramdac, svga);
		else if (s3->card_type == S3_NUMBER9_9FX_531)
			return att498_ramdac_in(addr, rs2, svga->ramdac, svga);
		else if ((s3->chip == S3_86C928PCI) && (s3->card_type == S3_SPEA_MERCURY_LITE_PCI))
			return sc1502x_ramdac_in(addr, svga->ramdac, svga);
		else
			return sdac_ramdac_in(addr, rs2, svga->ramdac, svga);
		break;

		case 0x3d4:
		return svga->crtcreg;
		case 0x3d5:
		switch (svga->crtcreg)
		{
			case 0x2d: return (s3->chip == S3_TRIO64V2) ? 0x89 : 0x88;       /*Extended chip ID*/
			case 0x2e: return s3->id_ext; /*New chip ID*/
			case 0x2f: return (s3->chip == S3_TRIO64V) ? 0x40 : 0;	  /*Revision level*/
			case 0x30: return s3->id;     /*Chip ID*/
			case 0x31: return (svga->crtc[0x31] & 0xcf) | ((s3->ma_ext & 3) << 4);
			case 0x35: return (svga->crtc[0x35] & 0xf0) | (s3->bank & 0xf);
			case 0x45: s3->hwc_col_stack_pos = 0; break;
			case 0x51: return (svga->crtc[0x51] & 0xf0) | ((s3->bank >> 2) & 0xc) | ((s3->ma_ext >> 2) & 3);
			case 0x5c:	/* General Output Port Register */
				temp = svga->crtc[svga->crtcreg] & 0xa0;
				if (((svga->miscout >> 2) & 3) == 3)
					temp |= svga->crtc[0x42] & 0x0f;
				else
					temp |= ((svga->miscout >> 2) & 3);
				if ((temp & 0xa0) == 0xa0) {
					if ((svga->crtc[0x5c] & 0x40) && i2c_gpio_get_scl(s3->i2c))
						temp |= 0x40;
					if ((svga->crtc[0x5c] & 0x10) && i2c_gpio_get_sda(s3->i2c))
						temp |= 0x10;
				}
				return temp;
			case 0x69: return s3->ma_ext;
			case 0x6a: return s3->bank;
			/* Phoenix S3 video BIOS'es seem to expect CRTC registers 6B and 6C
			   to be mirrors of 59 and 5A. */
			case 0x6b:
				if (s3->chip != S3_TRIO64V2) {
					if (svga->crtc[0x53] & 0x08) {
						return (s3->chip == S3_TRIO64V) ? (svga->crtc[0x59] & 0xfc) : (svga->crtc[0x59] & 0xfe);
					} else {
						return svga->crtc[0x59];
					}
				} else
					return svga->crtc[0x6b];
				break;
			case 0x6c:
				if (s3->chip != S3_TRIO64V2) {
					if (svga->crtc[0x53] & 0x08) {
						return 0x00;
					} else
						return (svga->crtc[0x5a] & 0x80);
				} else
					return svga->crtc[0x6c];
				break;
		}
		return svga->crtc[svga->crtcreg];
	}
	return svga_in(addr, svga);
}

static void s3_recalctimings(svga_t *svga)
{
	s3_t *s3 = (s3_t *)svga->p;
	int clk_sel = (svga->miscout >> 2) & 3;

	if (!svga->scrblank && svga->attr_palette_enable) {
		if ((svga->gdcreg[6] & 1) || (svga->attrregs[0x10] & 1)) {
			if (svga->crtc[0x3a] & 0x10) { /*256+ color register*/
				svga->gdcreg[5] |= 0x40;
			}
		}
	}

	svga->ma_latch |= (s3->ma_ext << 16);
	if (s3->chip >= S3_86C928) {
		svga->hdisp = svga->hdisp_old;

		if (svga->crtc[0x5d] & 0x01) svga->htotal     |= 0x100;
		if (svga->crtc[0x5d] & 0x02) {
			svga->hdisp_time |= 0x100;
			svga->hdisp |= 0x100 * ((svga->seqregs[1] & 8) ? 16 : 8);
		}
		if (svga->crtc[0x5e] & 0x01) svga->vtotal      |= 0x400;
		if (svga->crtc[0x5e] & 0x02) svga->dispend     |= 0x400;
		if (svga->crtc[0x5e] & 0x04) svga->vblankstart |= 0x400;
		if (svga->crtc[0x5e] & 0x10) svga->vsyncstart  |= 0x400;
		if (svga->crtc[0x5e] & 0x40) svga->split       |= 0x400;
		if (svga->crtc[0x51] & 0x30)      svga->rowoffset  |= (svga->crtc[0x51] & 0x30) << 4;
		else if (svga->crtc[0x43] & 0x04) svga->rowoffset  |= 0x100;
	}
	if (!svga->rowoffset) svga->rowoffset = 256;

	if ((s3->chip == S3_VISION964) || (s3->chip == S3_86C928)) {
		if (s3->card_type == S3_ELSAWIN2KPROX_964)
			ibm_rgb528_recalctimings(svga->ramdac, svga);
		else
			bt48x_recalctimings(svga->ramdac, svga);
	} else if (s3->chip == S3_VISION968) {
		if (s3->card_type == S3_SPEA_MERCURY_P64V || s3->card_type == S3_MIROVIDEO40SV_ERGO_968)
			tvp3026_recalctimings(svga->ramdac, svga);
		else
			ibm_rgb528_recalctimings(svga->ramdac, svga);
	} else
		svga->interlace = !!(svga->crtc[0x42] & 0x20);

	if ((((svga->miscout >> 2) & 3) == 3) && s3->chip < S3_TRIO32)
		clk_sel = svga->crtc[0x42] & 0x0f;

	svga->clock = (cpuclock * (double)(1ull << 32)) / svga->getclock(clk_sel, svga->clock_gen);

	switch (svga->crtc[0x67] >> 4) {
		case 3: case 5: case 7:
		svga->clock /= 2;
		break;
	}

	svga->lowres = !((svga->gdcreg[5] & 0x40) && (svga->crtc[0x3a] & 0x10));

	if (s3->card_type == S3_MIROCRYSTAL10SD_805 || s3->card_type == S3_MIROCRYSTAL20SD_864 ||
		s3->card_type == S3_MIROCRYSTAL20SV_964 || s3->card_type == S3_SPEA_MIRAGE_86C801 ||
		s3->card_type == S3_SPEA_MIRAGE_86C805 || s3->card_type == S3_MIROCRYSTAL8S_805 ||
		s3->card_type == S3_NUMBER9_9FX_531 || s3->card_type == S3_SPEA_MERCURY_LITE_PCI) {
		if (!(svga->crtc[0x5e] & 0x04))
			svga->vblankstart = svga->dispend;
		if (svga->bpp != 32) {
			if (svga->crtc[0x31] & 2) /*This is needed if the pixel width gets set with delays*/
				s3->width = 2048;
			else {
				if (s3->card_type == S3_MIROCRYSTAL10SD_805) {
					if (svga->hdisp == 1280 && s3->width == 1024) {
						s3->width = 1280;
					}
				}
			}
		} else {
			if (s3->card_type == S3_NUMBER9_9FX_531) {
				if (svga->hdisp == 1600 && s3->width == 1600)
					s3->width = 800;
			}
		}
	} else if (s3->chip == S3_86C928) {
		if (svga->bpp == 15) {
			if (s3->width == 800)
				s3->width = 1024;
		}
	}

	if ((svga->crtc[0x43] & 0x08) && (s3->color_16bit == 0) && (s3->chip <= S3_86C805)) {
		s3->color_16bit = 1;
		s3->width = 1024;
	} else if (!(svga->crtc[0x43] & 0x08) && (s3->color_16bit == 1) && (s3->chip <= S3_86C805)) {
		s3->color_16bit = 0;
		if (s3->chip <= S3_86C924) {
			if (s3->accel.advfunc_cntl & 4)
				s3->width = 1024;
			else
				s3->width = 640;
		}
	}

	if ((svga->gdcreg[5] & 0x40) && (svga->crtc[0x3a] & 0x10)) {
		switch (svga->bpp) {
			case 8:
			svga->render = svga_render_8bpp_highres;
			if (s3->chip != S3_VISION868) {
				if (s3->chip == S3_86C928) {
					if (s3->width == 2048 || s3->width == 1280 || s3->width == 1600)
						svga->hdisp <<= 1;
				} else if ((s3->chip != S3_86C801) && (s3->chip != S3_86C805) && (s3->chip != S3_TRIO32) &&
							(s3->chip != S3_TRIO64) && (s3->chip != S3_VISION964) && (s3->chip != S3_VISION968)) {
					if (s3->width == 1280 || s3->width == 1600)
						svga->hdisp <<= 1;
				} else if (s3->card_type == S3_SPEA_MERCURY_P64V) {
					if (s3->width == 1280 || s3->width == 1600)
						svga->hdisp <<= 1;
				} else if (s3->card_type == S3_NUMBER9_9FX_771)
					svga->hdisp <<= 1;

				if (s3->card_type == S3_MIROVIDEO40SV_ERGO_968 || s3->card_type == S3_MIROCRYSTAL20SD_864 ||
					s3->card_type == S3_PHOENIX_VISION968 || s3->card_type == S3_SPEA_MERCURY_P64V) {
					if (svga->hdisp != 1408)
						svga->hdisp = s3->width;
					if (s3->card_type == S3_MIROCRYSTAL20SD_864) {
						if (s3->width == 2048 || s3->width == 1600 || s3->width == 800) {
							switch (svga->dispend) {
								case 400:
								case 480:
								svga->hdisp = 640;
								break;

								case 576:
								svga->hdisp = 768;
								break;

								case 600:
								if (s3->width == 1600)
									s3->width = 800;
								svga->hdisp = 800;
								break;

								case 768:
								svga->hdisp = 1024;
								break;

								case 864:
								svga->hdisp = 1152;
								break;

								case 1024:
								if (svga->vtotal == 1066)
									svga->hdisp = 1280;
								break;
							}
						}
					}
				}
				if (s3->card_type == S3_MIROCRYSTAL10SD_805 || s3->card_type == S3_MIROCRYSTAL8S_805) {
					if (svga->rowoffset == 256 && (((svga->crtc[0x51] & 0x30) == 0x00 && !(svga->crtc[0x43] & 0x04))))
						svga->rowoffset >>= 1;
				}
			}
			break;
			case 15:
			svga->render = svga_render_15bpp_highres;
			if ((s3->chip != S3_VISION964) && (s3->card_type != S3_SPEA_MIRAGE_86C801) &&
				(s3->card_type != S3_SPEA_MIRAGE_86C805)) {
				if (s3->chip == S3_86C928)
					svga->hdisp <<= 1;
				else if (s3->chip != S3_VISION968)
					svga->hdisp >>= 1;
			}
			if ((s3->chip != S3_VISION868) && (s3->chip != S3_TRIO32) &&
				(s3->chip != S3_TRIO64) && (s3->chip != S3_VISION964)) {
				if (s3->width == 1280 || s3->width == 1600)
					svga->hdisp <<= 1;
				else if (s3->card_type == S3_NUMBER9_9FX_771)
					svga->hdisp <<= 1;
			}
			if (s3->card_type == S3_MIROVIDEO40SV_ERGO_968 || s3->card_type == S3_PHOENIX_VISION968 ||
				s3->card_type == S3_SPEA_MERCURY_P64V) {
				if (svga->hdisp == (1408*2))
					svga->hdisp >>= 1;
				else
					svga->hdisp = s3->width;
			}

			if (s3->card_type == S3_SPEA_MIRAGE_86C801 || s3->card_type == S3_SPEA_MIRAGE_86C805 ||
				s3->card_type == S3_SPEA_MERCURY_LITE_PCI)
				svga->hdisp = s3->width;
			break;
			case 16:
			svga->render = svga_render_16bpp_highres;
			if ((s3->chip != S3_VISION964) && (s3->card_type != S3_SPEA_MIRAGE_86C801) &&
				(s3->card_type != S3_SPEA_MIRAGE_86C805)) {
				if (s3->chip == S3_86C928)
					svga->hdisp <<= 1;
				else if (s3->chip != S3_VISION968)
					svga->hdisp >>= 1;
			} else if ((s3->card_type == S3_SPEA_MIRAGE_86C801) || (s3->card_type == S3_SPEA_MIRAGE_86C805))
					svga->hdisp >>= 1;
			if ((s3->chip != S3_VISION868) && (s3->chip != S3_TRIO32) &&
				(s3->chip != S3_TRIO64) && (s3->chip != S3_VISION964)) {
				if (s3->width == 1280 || s3->width == 1600)
					svga->hdisp <<= 1;
				else if (s3->card_type == S3_NUMBER9_9FX_771)
					svga->hdisp <<= 1;
			}
			if (s3->card_type == S3_MIROVIDEO40SV_ERGO_968 || s3->card_type == S3_PHOENIX_VISION968 ||
				s3->card_type == S3_SPEA_MERCURY_P64V) {
				if (svga->hdisp == (1408*2))
					svga->hdisp >>= 1;
				else
					svga->hdisp = s3->width;
			}

			if (s3->card_type == S3_SPEA_MIRAGE_86C801 || s3->card_type == S3_SPEA_MIRAGE_86C805 ||
				s3->card_type == S3_SPEA_MERCURY_LITE_PCI)
				svga->hdisp = s3->width;
			break;
			case 24:
			svga->render = svga_render_24bpp_highres;
			if (s3->chip != S3_VISION968) {
				if (s3->chip != S3_86C928 && s3->chip != S3_86C801 && s3->chip != S3_86C805)
					svga->hdisp /= 3;
				else
					svga->hdisp = (svga->hdisp * 2) / 3;

				if (s3->card_type == S3_SPEA_MERCURY_LITE_PCI) {
					if (s3->width == 2048)
						switch (svga->dispend) {
							case 480:
								svga->hdisp = 640;
								break;
						}
				}
			} else {
				if (s3->card_type == S3_MIROVIDEO40SV_ERGO_968 || s3->card_type == S3_PHOENIX_VISION968 ||
					s3->card_type == S3_SPEA_MERCURY_P64V)
					svga->hdisp = s3->width;
			}
			break;
			case 32:
			svga->render = svga_render_32bpp_highres;
			if ((s3->chip < S3_TRIO32) && (s3->chip != S3_VISION964) &&
			    (s3->chip != S3_VISION968) && (s3->chip != S3_86C928)) {
				if (s3->chip == S3_VISION868)
					svga->hdisp >>= 1;
				else
					svga->hdisp >>= 2;
			}
			if (s3->width == 1280 || s3->width == 1600 || (s3->card_type == S3_SPEA_MERCURY_P64V ||
				s3->card_type == S3_NUMBER9_9FX_771))
				svga->hdisp <<= 1;
			if (s3->card_type == S3_MIROVIDEO40SV_ERGO_968 || s3->card_type == S3_MIROCRYSTAL20SV_964 ||
				s3->card_type == S3_MIROCRYSTAL20SD_864 || s3->card_type == S3_PHOENIX_VISION968 ||
				s3->card_type == S3_SPEA_MERCURY_P64V) {
				svga->hdisp = s3->width;
				if (s3->card_type == S3_MIROCRYSTAL20SD_864 || s3->card_type == S3_MIROCRYSTAL20SV_964) {
					if (s3->width == 800 || s3->width == 1024 || s3->width == 1600) {
						switch (svga->dispend) {
							case 400:
							case 480:
							svga->hdisp = 640;
							break;

							case 576:
							if (s3->width == 1600)
								s3->width = 800;
							svga->hdisp = 768;
							break;

							case 600:
							if (s3->width == 1600)
								s3->width = 800;
							svga->hdisp = 800;
							break;
						}
					}
				}
			}
			break;
		}
	} else {
		if (!svga->scrblank && svga->attr_palette_enable) {
			if ((svga->gdcreg[6] & 1) || (svga->attrregs[0x10] & 1)) {
				if ((svga->crtc[0x31] & 0x08) && ((svga->gdcreg[5] & 0x60) == 0x00)) {
					if (svga->bpp == 8) {
						svga->render = svga_render_8bpp_highres; /*Enhanced 4bpp mode, just like the 8bpp mode per spec.*/
						if (svga->hdisp <= 1024)
							s3->width = 1024;
					}
				}
			} else {
				if (s3->chip <= S3_86C924)
					s3->width = 1024;
			}
		}
	}
}

static void s3_trio64v_recalctimings(svga_t *svga)
{
	s3_t *s3 = (s3_t *)svga->p;
	int clk_sel = (svga->miscout >> 2) & 3;

	if (!svga->scrblank && svga->attr_palette_enable) {
		if ((svga->gdcreg[6] & 1) || (svga->attrregs[0x10] & 1)) {
			if (svga->crtc[0x3a] & 0x10) /*256+ color register*/
				svga->gdcreg[5] |= 0x40;
		}
	}
	svga->hdisp = svga->hdisp_old;
	if (svga->crtc[0x5d] & 0x01) svga->htotal     |= 0x100;
	if (svga->crtc[0x5d] & 0x02) {
		svga->hdisp_time |= 0x100;
		svga->hdisp |= 0x100 * ((svga->seqregs[1] & 8) ? 16 : 8);
	}
	if (svga->crtc[0x5e] & 0x01) svga->vtotal      |= 0x400;
	if (svga->crtc[0x5e] & 0x02) svga->dispend     |= 0x400;
	if (svga->crtc[0x5e] & 0x04) svga->vblankstart |= 0x400;
	if (svga->crtc[0x5e] & 0x10) svga->vsyncstart  |= 0x400;
	if (svga->crtc[0x5e] & 0x40) svga->split       |= 0x400;
	svga->interlace = svga->crtc[0x42] & 0x20;

	svga->clock = (cpuclock * (double)(1ull << 32)) / svga->getclock(clk_sel, svga->clock_gen);

	if ((svga->crtc[0x67] & 0xc) != 0xc) /*VGA mode*/
	{
		svga->ma_latch |= (s3->ma_ext << 16);
		if (svga->crtc[0x51] & 0x30)      svga->rowoffset  |= (svga->crtc[0x51] & 0x30) << 4;
		else if (svga->crtc[0x43] & 0x04) svga->rowoffset  |= 0x100;
		if (!svga->rowoffset) svga->rowoffset = 256;

		svga->lowres = !((svga->gdcreg[5] & 0x40) && (svga->crtc[0x3a] & 0x10));

		if ((svga->gdcreg[5] & 0x40) && (svga->crtc[0x3a] & 0x10)) {
			switch (svga->bpp) {
				case 8:
				svga->render = svga_render_8bpp_highres;
				break;
				case 15:
				svga->render = svga_render_15bpp_highres;
				svga->hdisp >>= 1;
				break;
				case 16:
				svga->render = svga_render_16bpp_highres;
				svga->hdisp >>= 1;
				break;
				case 24:
				svga->render = svga_render_24bpp_highres;
				svga->hdisp /= 3;
				break;
				case 32:
				svga->render = svga_render_32bpp_highres;
				break;
			}
		}
	}
        else /*Streams mode*/
        {
                if (s3->streams.buffer_ctrl & 1)
                        svga->ma_latch = s3->streams.pri_fb1 >> 2;
                else
                        svga->ma_latch = s3->streams.pri_fb0 >> 2;

                svga->hdisp = s3->streams.pri_w + 1;
                if (s3->streams.pri_h < svga->dispend)
                        svga->dispend = s3->streams.pri_h;

                svga->overlay.x = s3->streams.sec_x - s3->streams.pri_x;
                svga->overlay.y = s3->streams.sec_y - s3->streams.pri_y;
                svga->overlay.ysize = s3->streams.sec_h;

                if (s3->streams.buffer_ctrl & 2)
                        svga->overlay.addr = s3->streams.sec_fb1;
                else
                        svga->overlay.addr = s3->streams.sec_fb0;

                svga->overlay.ena = (svga->overlay.x >= 0);
                svga->overlay.v_acc = s3->streams.dda_vert_accumulator;
                svga->rowoffset = s3->streams.pri_stride >> 3;

                switch ((s3->streams.pri_ctrl >> 24) & 0x7)
                {
                        case 0: /*RGB-8 (CLUT)*/
                        svga->render = svga_render_8bpp_highres;
                        break;
                        case 3: /*KRGB-16 (1.5.5.5)*/
                        svga->htotal >>= 1;
                        svga->render = svga_render_15bpp_highres;
                        break;
                        case 5: /*RGB-16 (5.6.5)*/
                        svga->htotal >>= 1;
                        svga->render = svga_render_16bpp_highres;
                        break;
                        case 6: /*RGB-24 (8.8.8)*/
                        svga->render = svga_render_24bpp_highres;
                        break;
                        case 7: /*XRGB-32 (X.8.8.8)*/
                        svga->render = svga_render_32bpp_highres;
                        break;
                }
        }
}

static void
s3_updatemapping(s3_t *s3)
{
	svga_t *svga = &s3->svga;

	if (s3->pci && !(s3->pci_regs[PCI_REG_COMMAND] & PCI_COMMAND_MEM))
	{
		mem_mapping_disable(&svga->mapping);
		mem_mapping_disable(&s3->linear_mapping);
		mem_mapping_disable(&s3->mmio_mapping);
		mem_mapping_disable(&s3->new_mmio_mapping);
		return;
	}

	/*Banked framebuffer*/
	if (svga->crtc[0x31] & 0x08) /*Enhanced mode mappings*/
	{
		/* Enhanced mode forces 64kb at 0xa0000*/
		mem_mapping_set_addr(&svga->mapping, 0xa0000, 0x10000);
		svga->banked_mask = 0xffff;
	}
	else switch (svga->gdcreg[6] & 0xc) /*VGA mapping*/
	{
		case 0x0: /*128k at A0000*/
		mem_mapping_set_addr(&svga->mapping, 0xa0000, 0x20000);
		svga->banked_mask = 0xffff;
		break;
		case 0x4: /*64k at A0000*/
		mem_mapping_set_addr(&svga->mapping, 0xa0000, 0x10000);
		svga->banked_mask = 0xffff;
		break;
		case 0x8: /*32k at B0000*/
		mem_mapping_set_addr(&svga->mapping, 0xb0000, 0x08000);
		svga->banked_mask = 0x7fff;
		break;
		case 0xC: /*32k at B8000*/
		mem_mapping_set_addr(&svga->mapping, 0xb8000, 0x08000);
		svga->banked_mask = 0x7fff;
		break;
	}

	if (s3->chip >= S3_86C928) {
		s3->linear_base = (svga->crtc[0x5a] << 16) | (svga->crtc[0x59] << 24);

		if (s3->chip >= S3_86C928 && s3->chip <= S3_86C805) {
			if (s3->vlb)
				s3->linear_base &= 0x03ffffff;
			else
				s3->linear_base &= 0x00ffffff;
		}

		if ((svga->crtc[0x58] & 0x10) || (s3->accel.advfunc_cntl & 0x10))
		{
			/*Linear framebuffer*/
			mem_mapping_disable(&svga->mapping);

			switch (svga->crtc[0x58] & 3)
			{
				case 0: /*64k*/
				s3->linear_size = 0x10000;
				break;
				case 1: /*1mb*/
				s3->linear_size = 0x100000;
				break;
				case 2: /*2mb*/
				s3->linear_size = 0x200000;
				break;
				case 3: /*8mb*/
				switch (s3->chip) { /* Not on video cards that don't support 4MB*/
					case S3_TRIO64:
					case S3_TRIO64V:
					case S3_TRIO64V2:
					case S3_86C928:
					case S3_86C928PCI:
						s3->linear_size = 0x400000;
						break;
					default:
						s3->linear_size = 0x800000;
						break;
				}
				break;
			}
			s3->linear_base &= ~(s3->linear_size - 1);
			if (s3->linear_base == 0xa0000) {
				mem_mapping_disable(&s3->linear_mapping);
				if (!(svga->crtc[0x53] & 0x10)) {
					mem_mapping_set_addr(&svga->mapping, s3->linear_base, 0x10000);
					svga->banked_mask = 0xffff;
				}
			} else {
				if (s3->chip >= S3_TRIO64V) {
					s3->linear_base &= 0xfc000000;
				} else if (s3->chip == S3_VISION968 || s3->chip == S3_VISION868) {
					s3->linear_base &= 0xfe000000;
				}

				mem_mapping_set_addr(&s3->linear_mapping, s3->linear_base, s3->linear_size);
			}
			if (s3->chip >= S3_TRIO64V)
				svga->fb_only = 1;
		} else {
			if (s3->chip >= S3_TRIO64V)
				svga->fb_only = 0;
			
			mem_mapping_disable(&s3->linear_mapping);
		}

		/* Memory mapped I/O. */
		if ((svga->crtc[0x53] & 0x10) || (s3->accel.advfunc_cntl & 0x20)) {
			mem_mapping_disable(&svga->mapping);
			if (s3->chip >= S3_TRIO64V) {
				if (svga->crtc[0x53] & 0x20)
					mem_mapping_set_addr(&s3->mmio_mapping, 0xb8000, 0x8000);
				else
					mem_mapping_set_addr(&s3->mmio_mapping, 0xa0000, 0x10000);
			} else {
				mem_mapping_enable(&s3->mmio_mapping);
			}
		} else {
			mem_mapping_disable(&s3->mmio_mapping);
		}

		/* New MMIO. */
		if (svga->crtc[0x53] & 0x08)
			mem_mapping_set_addr(&s3->new_mmio_mapping, s3->linear_base + 0x1000000, 0x20000);
		else
			mem_mapping_disable(&s3->new_mmio_mapping);
	}
}

static float
s3_trio64_getclock(int clock, void *p)
{
	s3_t *s3 = (s3_t *)p;
	svga_t *svga = &s3->svga;
	float t;
	int m, n1, n2;
	if (clock == 0) return 25175000.0;
	if (clock == 1) return 28322000.0;
	m  = svga->seqregs[0x13] + 2;
	n1 = (svga->seqregs[0x12] & 0x1f) + 2;
	n2 = ((svga->seqregs[0x12] >> 5) & 0x07);
	t = (14318184.0 * ((float)m / (float)n1)) / (float)(1 << n2);
	return t;
}

static void
s3_accel_out(uint16_t port, uint8_t val, void *p)
{
	s3_t *s3 = (s3_t *)p;
	svga_t *svga = &s3->svga;

	if (port >= 0x8000) {
		if (!s3->enable_8514)
			return;

		if (s3_enable_fifo(s3))
			s3_queue(s3, port, val, FIFO_OUT_BYTE);
		else
			s3_accel_out_fifo(s3, port, val);
	} else {
		switch (port)
		{
			case 0x4148: case 0x42e8:
			s3->subsys_stat &= ~val;
			s3_update_irqs(s3);
			break;
			case 0x4149: case 0x42e9:
			s3->subsys_cntl = val;
			s3_update_irqs(s3);
			break;
			case 0x4548: case 0x46e8:
			s3->accel.setup_md = val;
			break;
			case 0x4948: case 0x4ae8:
			s3->accel.advfunc_cntl = val;
			if ((s3->chip > S3_86C805) && ((svga->crtc[0x50] & 0xc1) == 0x80)) {
				s3->width = (val & 4) ? 1600 : 800;
				svga->fullchange = changeframecount;
				svga_recalctimings(svga);
			} else if (s3->chip <= S3_86C805) {
				svga->fullchange = changeframecount;
				svga_recalctimings(svga);
			}
			if (s3->chip > S3_86C924)
				s3_updatemapping(s3);
			break;
		}
	}
}

static void
s3_accel_out_w(uint16_t port, uint16_t val, void *p)
{
	s3_t *s3 = (s3_t *)p;

	if (!s3->enable_8514)
		return;

	if (s3_enable_fifo(s3))
		s3_queue(s3, port, val, FIFO_OUT_WORD);
	else
		s3_accel_out_fifo_w(s3, port, val);
}

static void
s3_accel_out_l(uint16_t port, uint32_t val, void *p)
{
	s3_t *s3 = (s3_t *)p;

	if (!s3->enable_8514)
		return;

	if (s3_enable_fifo(s3))
		s3_queue(s3, port, val, FIFO_OUT_DWORD);
	else
		s3_accel_out_fifo_l(s3, port, val);
}

static uint8_t
s3_accel_in(uint16_t port, void *p)
{
	s3_t *s3 = (s3_t *)p;
	svga_t *svga = &s3->svga;
	int temp;

	if (!s3->enable_8514)
		return 0xff;

	switch (port) {
		case 0x4148: case 0x42e8:
		return s3->subsys_stat;
		case 0x4149: case 0x42e9:
		return s3->subsys_cntl;

		case 0x8148: case 0x82e8:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.cur_y & 0xff;
		case 0x8149: case 0x82e9:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.cur_y >> 8;

		case 0x8548: case 0x86e8:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.cur_x & 0xff;
		case 0x8549: case 0x86e9:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.cur_x >> 8;

		case 0x8948: case 0x8ae8:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			return s3->accel.desty_axstp & 0xff;
		}
		break;
		case 0x8949: case 0x8ae9:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			return s3->accel.desty_axstp >> 8;
		}
		break;

		case 0x8d48: case 0x8ee8:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			return s3->accel.destx_distp & 0xff;
		}
		break;
		case 0x8d49: case 0x8ee9:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			return s3->accel.destx_distp >> 8;
		}
		break;

		case 0x9148: case 0x92e8:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.err_term & 0xff;
		case 0x9149: case 0x92e9:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.err_term >> 8;

		case 0x9548: case 0x96e8:
		if (s3->chip >= S3_86C928) {
			return s3->accel.maj_axis_pcnt & 0xff;
		}
		break;
		case 0x9549: case 0x96e9:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			return s3->accel.maj_axis_pcnt >> 8;
		}
		break;

		case 0x8118:
		case 0x9948: case 0x9ae8:
		temp = 0;	/* FIFO empty */
		if (s3_enable_fifo(s3)) {
			if (!s3->blitter_busy)
				wake_fifo_thread(s3);
			if (FIFO_FULL)
				temp = 0xff;
		}
		return temp;
		case 0x8119:
		case 0x9949: case 0x9ae9:
		temp = 0;
		if (s3_enable_fifo(s3)) {
			if (!s3->blitter_busy)
				wake_fifo_thread(s3);

			if (!FIFO_EMPTY || s3->force_busy)
				temp |= 0x02; /*Hardware busy*/
			else
				temp |= 0x04; /*FIFO empty*/
			s3->force_busy = 0;

			if (s3->chip >= S3_VISION964) {
                if (FIFO_FULL)
					temp |= 0xf8; /*FIFO full*/
			}

			if (s3->data_available) {
				temp |= 0x01; /*Read Data available*/
				s3->data_available = 0;
			}
		} else {
			if (s3->force_busy) {
				temp |= 0x02; /*Hardware busy*/
			}
			s3->force_busy = 0;
			if (s3->data_available) {
				temp |= 0x01; /*Read Data available*/
				s3->data_available = 0;
			}
		}
		return temp;

		case 0x9d48: case 0x9ee8:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			return s3->accel.short_stroke & 0xff;
		}
		break;
		case 0x9d49: case 0x9ee9:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			return s3->accel.short_stroke >> 8;
		}
		break;

		case 0xa148: case 0xa2e8:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			return s3->accel.bkgd_color & 0xff;
		}
		break;
		case 0xa149: case 0xa2e9:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			return s3->accel.bkgd_color >> 8;
		}
		break;
		case 0xa14a: case 0xa2ea:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.bkgd_color >> 16;
		case 0xa14b: case 0xa2eb:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.bkgd_color >> 24;

		case 0xa548: case 0xa6e8:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			return s3->accel.frgd_color & 0xff;
		}
		break;
		case 0xa549: case 0xa6e9:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			return s3->accel.frgd_color >> 8;
		}
		break;
		case 0xa54a: case 0xa6ea:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.frgd_color >> 16;
		case 0xa54b: case 0xa6eb:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.frgd_color >> 24;

		case 0xa948: case 0xaae8:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			return s3->accel.wrt_mask & 0xff;
		}
		break;
		case 0xa949: case 0xaae9:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			return s3->accel.wrt_mask >> 8;
		}
		break;
		case 0xa94a: case 0xaaea:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.wrt_mask >> 16;
		case 0xa94b: case 0xaaeb:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.wrt_mask >> 24;

		case 0xad48: case 0xaee8:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			return s3->accel.rd_mask & 0xff;
		}
		break;
		case 0xad49: case 0xaee9:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.rd_mask >> 8;
		case 0xad4a: case 0xaeea:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.rd_mask >> 16;
		case 0xad4b: case 0xaeeb:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.rd_mask >> 24;

		case 0xb148: case 0xb2e8:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			return s3->accel.color_cmp & 0xff;
		}
		break;
		case 0xb149: case 0xb2e9:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			return s3->accel.color_cmp >> 8;
		}
		break;
		case 0xb14a: case 0xb2ea:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.color_cmp >> 16;
		case 0xb14b: case 0xb2eb:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.color_cmp >> 24;

		case 0xb548: case 0xb6e8:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			return s3->accel.bkgd_mix;
		}
		break;

		case 0xb948: case 0xbae8:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			return s3->accel.frgd_mix;
		}
		break;

		case 0xbd48: case 0xbee8:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			temp = s3->accel.multifunc[0xf] & 0xf;
			switch (temp)
			{
				case 0x0: return s3->accel.multifunc[0x0] & 0xff;
				case 0x1: return s3->accel.multifunc[0x1] & 0xff;
				case 0x2: return s3->accel.multifunc[0x2] & 0xff;
				case 0x3: return s3->accel.multifunc[0x3] & 0xff;
				case 0x4: return s3->accel.multifunc[0x4] & 0xff;
				case 0x5: return s3->accel.multifunc[0xa] & 0xff;
				case 0x6: return s3->accel.multifunc[0xe] & 0xff;
				case 0x7: return s3->accel.cmd	    & 0xff;
				case 0x8: return s3->accel.subsys_cntl    & 0xff;
				case 0x9: return s3->accel.setup_md       & 0xff;
				case 0xa: return s3->accel.multifunc[0xd] & 0xff;
			}
			return 0xff;
		}
		break;
		case 0xbd49: case 0xbee9:
		if (s3->chip >= S3_86C928) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			temp = s3->accel.multifunc[0xf] & 0xf;
			s3->accel.multifunc[0xf]++;
			switch (temp)
			{
				case 0x0: return  s3->accel.multifunc[0x0] >> 8;
				case 0x1: return  s3->accel.multifunc[0x1] >> 8;
				case 0x2: return  s3->accel.multifunc[0x2] >> 8;
				case 0x3: return  s3->accel.multifunc[0x3] >> 8;
				case 0x4: return  s3->accel.multifunc[0x4] >> 8;
				case 0x5: return  s3->accel.multifunc[0xa] >> 8;
				case 0x6: return  s3->accel.multifunc[0xe] >> 8;
				case 0x7: return  s3->accel.cmd	    >> 8;
				case 0x8: return (s3->accel.subsys_cntl    >> 8) & ~0xe000;
				case 0x9: return (s3->accel.setup_md       >> 8) & ~0xf000;
				case 0xa: return  s3->accel.multifunc[0xd] >> 8;
			}
			return 0xff;
		}
		break;

		case 0xd148: case 0xd2e8:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.ropmix & 0xff;

		case 0xd149: case 0xd2e9:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.ropmix >> 8;

		case 0xe548: case 0xe6e8:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.pat_bg_color & 0xff;

		case 0xe549: case 0xe6e9:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.pat_bg_color >> 8;

		case 0xe54a: case 0xe6ea:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.pat_bg_color >> 16;

		case 0xe54b: case 0xe6eb:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.pat_bg_color >> 24;

		case 0xe948: case 0xeae8:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.pat_y & 0xff;

		case 0xe949: case 0xeae9:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.pat_y >> 8;

		case 0xe94a: case 0xeaea:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.pat_x & 0xff;

		case 0xe94b: case 0xeaeb:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.pat_x >> 8;

		case 0xed48: case 0xeee8:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.pat_fg_color & 0xff;

		case 0xed49: case 0xeee9:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.pat_fg_color >> 8;

		case 0xed4a: case 0xeeea:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.pat_fg_color >> 16;

		case 0xed4b: case 0xeeeb:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.pat_fg_color >> 24;

		case 0xe148: case 0xe2e8:
		if (!s3_cpu_dest(s3))
			break;
		READ_PIXTRANS_BYTE_IO(0)
		if (s3->accel.cmd & 0x100) {
			switch (s3->accel.cmd & 0x600) {
				case 0x000:
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40))
							s3_accel_start(8, 1, s3->accel.pix_trans[0], 0, s3);
						else
							s3_accel_start(1, 1, 0xffffffff, s3->accel.pix_trans[0], s3);
					} else
						s3_accel_start(1, 1, 0xffffffff, s3->accel.pix_trans[0], s3);
					break;
				case 0x200:
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40))
							s3_accel_start(16, 1, s3->accel.pix_trans[0], 0, s3);
						else
							s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[0], s3);
					} else {
						s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[0], s3);
					}
					break;
			}
		}
		return s3->accel.pix_trans[0];

		case 0xe149: case 0xe2e9:
		if (!s3_cpu_dest(s3))
			break;
		READ_PIXTRANS_BYTE_IO(1);
		if (s3->accel.cmd & 0x100) {
			switch (s3->accel.cmd & 0x600) {
				case 0x000:
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40))
							s3_accel_start(8, 1, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8), 0, s3);
						else
							s3_accel_start(1, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8), s3);
					} else
						s3_accel_start(1, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8), s3);
					break;
				case 0x200:
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
							if (s3->accel.cmd & 0x1000)
								s3_accel_start(16, 1, s3->accel.pix_trans[1] | (s3->accel.pix_trans[0] << 8), 0, s3);
							else
								s3_accel_start(16, 1, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8), 0, s3);
						} else {
							if (s3->accel.cmd & 0x1000)
								s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[1] | (s3->accel.pix_trans[0] << 8), s3);
							else
								s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8), s3);
						}
					} else {
						if (s3->accel.cmd & 0x1000)
							s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[1] | (s3->accel.pix_trans[0] << 8), s3);
						else
							s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8), s3);
					}
					break;
			}
		}
		return s3->accel.pix_trans[1];

		case 0xe14a: case 0xe2ea:
		if (!s3_cpu_dest(s3))
			break;
		READ_PIXTRANS_BYTE_IO(2);
		return s3->accel.pix_trans[2];

		case 0xe14b: case 0xe2eb:
		if (!s3_cpu_dest(s3))
			break;
		READ_PIXTRANS_BYTE_IO(3)
		if (s3->accel.cmd & 0x100) {
			switch (s3->accel.cmd & 0x600) {
				case 0x000:
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40))
							s3_accel_start(8, 1, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8) | (s3->accel.pix_trans[2] << 16) | (s3->accel.pix_trans[3] << 24), 0, s3);
						else
							s3_accel_start(1, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8) | (s3->accel.pix_trans[2] << 16) | (s3->accel.pix_trans[3] << 24), s3);
					} else
						s3_accel_start(1, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8) | (s3->accel.pix_trans[2] << 16) | (s3->accel.pix_trans[3] << 24), s3);
					break;
				case 0x200:
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40))
							s3_accel_start(16, 1, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8) | (s3->accel.pix_trans[2] << 16) | (s3->accel.pix_trans[3] << 24), 0, s3);
						else
							s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8) | (s3->accel.pix_trans[2] << 16) | (s3->accel.pix_trans[3] << 24), s3);
					} else
						s3_accel_start(2, 1, 0xffffffff, s3->accel.pix_trans[0] | (s3->accel.pix_trans[1] << 8) | (s3->accel.pix_trans[2] << 16) | (s3->accel.pix_trans[3] << 24), s3);
					break;
			}
		}
		return s3->accel.pix_trans[3];

		case 0xff20: case 0xff21:
		temp = s3->serialport & ~(SERIAL_PORT_SCR | SERIAL_PORT_SDR);
		if ((s3->serialport & SERIAL_PORT_SCW) && i2c_gpio_get_scl(s3->i2c))
			temp |= SERIAL_PORT_SCR;
		if ((s3->serialport & SERIAL_PORT_SDW) && i2c_gpio_get_sda(s3->i2c))
			temp |= SERIAL_PORT_SDR;
		return temp;
	}

	return 0xff;
}

static uint16_t
s3_accel_in_w(uint16_t port, void *p)
{
	s3_t *s3 = (s3_t *)p;
	svga_t *svga = &s3->svga;
	uint16_t temp = 0x0000;
	uint16_t *vram_w = (uint16_t *)svga->vram;

	if (!s3->enable_8514)
		return 0xffff;

	if (port != 0x9ee8 && port != 0x9d48) {
		if (s3_cpu_dest(s3)) {
			READ_PIXTRANS_WORD

			switch (s3->accel.cmd & 0x600) {
				case 0x000:
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
							if (s3->accel.cmd & 0x1000)
								temp = (temp >> 8) | (temp << 8);
							s3_accel_start(8, 1, temp | (temp << 16), 0, s3);
						} else {
							s3_accel_start(1, 1, 0xffffffff, temp | (temp << 16), s3);
						}
					} else {
						if (s3->color_16bit) {
							s3_accel_start(2, 1, 0xffffffff, temp | (temp << 16), s3);
						} else {
							s3_accel_start(1, 1, 0xffffffff, temp | (temp << 16), s3);
						}
					}
					break;
				case 0x200:
					if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
						if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
							if (s3->accel.cmd & 0x1000)
								temp = (temp >> 8) | (temp << 8);
							s3_accel_start(16, 1, temp | (temp << 16), 0, s3);
						} else
							s3_accel_start(2, 1, 0xffffffff, temp | (temp << 16), s3);
					} else {
						s3_accel_start(2, 1, 0xffffffff, temp | (temp << 16), s3);
					}
					break;
			}
		}
	} else {
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		temp = s3->accel.short_stroke;
	}

	return temp;
}

static uint32_t
s3_accel_in_l(uint16_t port, void *p)
{
	s3_t *s3 = (s3_t *)p;
	svga_t *svga = &s3->svga;
	uint32_t temp = 0x00000000;
	uint16_t *vram_w = (uint16_t *)svga->vram;

	if (!s3->enable_8514)
		return 0xffffffff;

	if (s3_cpu_dest(s3)) {
	    READ_PIXTRANS_LONG

		switch (s3->accel.cmd & 0x600) {
			case 0x000:
				if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
					if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
						if (s3->accel.cmd & 0x1000)
							temp = ((temp & 0xff00ff00) >> 8) | ((temp & 0x00ff00ff) << 8);
						s3_accel_start(8, 1, temp, 0, s3);
						s3_accel_start(8, 1, temp >> 16, 0, s3);
					} else {
						s3_accel_start(1, 1, 0xffffffff, temp, s3);
						s3_accel_start(1, 1, 0xffffffff, temp >> 16, s3);
					}
				} else {
					s3_accel_start(1, 1, 0xffffffff, temp, s3);
					s3_accel_start(1, 1, 0xffffffff, temp >> 16, s3);
				}
				break;
			case 0x200:
				if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
					if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
						if (s3->accel.cmd & 0x1000)
							temp = ((temp & 0xff00ff00) >> 8) | ((temp & 0x00ff00ff) << 8);
						s3_accel_start(16, 1, temp, 0, s3);
						s3_accel_start(16, 1, temp >> 16, 0, s3);
					} else {
						s3_accel_start(2, 1, 0xffffffff, temp, s3);
						s3_accel_start(2, 1, 0xffffffff, temp >> 16, s3);
					}
				} else {
					s3_accel_start(2, 1, 0xffffffff, temp, s3);
					s3_accel_start(2, 1, 0xffffffff, temp >> 16, s3);
				}
				break;
		}
	}

	return temp;
}


static void
s3_accel_write(uint32_t addr, uint8_t val, void *p)
{
    s3_t *s3 = (s3_t *)p;
    svga_t *svga = &s3->svga;

	if (!s3->enable_8514)
		return;

	if (s3_enable_fifo(s3)) {
		if (svga->crtc[0x53] & 0x08)
			s3_queue(s3, addr & 0x1ffff, val, FIFO_WRITE_BYTE);
		else
			s3_queue(s3, addr & 0xffff, val, FIFO_WRITE_BYTE);
	} else
		s3_accel_write_fifo(s3, addr & 0xffff, val);
}

static void
s3_accel_write_w(uint32_t addr, uint16_t val, void *p)
{
    s3_t *s3 = (s3_t *)p;
    svga_t *svga = &s3->svga;

	if (!s3->enable_8514)
		return;

	if (s3_enable_fifo(s3)) {
		if (svga->crtc[0x53] & 0x08)
			s3_queue(s3, addr & 0x1ffff, val, FIFO_WRITE_WORD);
		else
			s3_queue(s3, addr & 0xffff, val, FIFO_WRITE_WORD);
	} else
		s3_accel_write_fifo_w(s3, addr & 0xffff, val);
}

static void
s3_accel_write_l(uint32_t addr, uint32_t val, void *p)
{
    s3_t *s3 = (s3_t *)p;
    svga_t *svga = &s3->svga;

	if (!s3->enable_8514)
		return;

	if (s3_enable_fifo(s3)) {
		if (svga->crtc[0x53] & 0x08)
			s3_queue(s3, addr & 0x1ffff, val, FIFO_WRITE_DWORD);
		else
			s3_queue(s3, addr & 0xffff, val, FIFO_WRITE_DWORD);
	} else
		s3_accel_write_fifo_l(s3, addr & 0xffff, val);
}

static uint8_t
s3_accel_read(uint32_t addr, void *p)
{
    s3_t *s3 = (s3_t *)p;
    svga_t *svga = &s3->svga;
    uint8_t temp = 0x00;

	if (!s3->enable_8514)
		return 0xff;

    if (svga->crtc[0x53] & 0x08) {
	if ((addr >= 0x08000) && (addr <= 0x0803f))
		return s3_pci_read(0, addr & 0xff, s3);
	switch (addr & 0x1ffff) {
	    case 0x83b0: case 0x83b1: case 0x83b2: case 0x83b3:
	    case 0x83b4: case 0x83b5: case 0x83b6: case 0x83b7:
	    case 0x83b8: case 0x83b9: case 0x83ba: case 0x83bb:
	    case 0x83bc: case 0x83bd: case 0x83be: case 0x83bf:
	    case 0x83c0: case 0x83c1: case 0x83c2: case 0x83c3:
	    case 0x83c4: case 0x83c5: case 0x83c6: case 0x83c7:
	    case 0x83c8: case 0x83c9: case 0x83ca: case 0x83cb:
	    case 0x83cc: case 0x83cd: case 0x83ce: case 0x83cf:
	    case 0x83d0: case 0x83d1: case 0x83d2: case 0x83d3:
	    case 0x83d4: case 0x83d5: case 0x83d6: case 0x83d7:
	    case 0x83d8: case 0x83d9: case 0x83da: case 0x83db:
	    case 0x83dc: case 0x83dd: case 0x83de: case 0x83df:
		return s3_in(addr & 0x3ff, s3);
	    case 0x8504:
		return s3->subsys_stat;
	    case 0x8505:
		return s3->subsys_cntl;
	    default:
		return s3_accel_in(addr & 0xffff, p);
	}
	return 0xff;
    } else {
	if (addr & 0x8000) {
	    temp = s3_accel_in(addr & 0xffff, p);
	} else if (s3_cpu_dest(s3)) {
		READ_PIXTRANS_BYTE_MM

		switch (s3->accel.cmd & 0x600) {
			case 0x000:
				if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
					if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40))
						s3_accel_start(8, 1, temp | (temp << 8) | (temp << 16) | (temp << 24), 0, s3);
					else
						s3_accel_start(1, 1, 0xffffffff, temp | (temp << 8) | (temp << 16) | (temp << 24), s3);
				} else
					s3_accel_start(1, 1, 0xffffffff, temp | (temp << 8) | (temp << 16) | (temp << 24), s3);
				break;
			case 0x200:
				if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
					if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40))
						s3_accel_start(16, 1, temp | (temp << 8) | (temp << 16) | (temp << 24), 0, s3);
					else
						s3_accel_start(2, 1, 0xffffffff, temp | (temp << 8) | (temp << 16) | (temp << 24), s3);
				} else
					s3_accel_start(2, 1, 0xffffffff, temp | (temp << 8) | (temp << 16) | (temp << 24), s3);
				break;
		}
	}
    }

    return temp;
}

static uint16_t
s3_accel_read_w(uint32_t addr, void *p)
{
    s3_t *s3 = (s3_t *)p;
    svga_t *svga = &s3->svga;
    uint16_t temp = 0x0000;
	uint16_t *vram_w = (uint16_t *)svga->vram;

	if (!s3->enable_8514)
	return 0xffff;

    if (svga->crtc[0x53] & 0x08) {
	switch (addr & 0x1fffe) {
		case 0x811c:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		return s3->accel.short_stroke;

	    default:
		return s3_accel_read(addr, p) |
			s3_accel_read(addr + 1, p) << 8;
	}
	return 0xffff;
    } else {
	if (addr & 0x8000) {
		if (addr == 0x811c) {
			if (s3_enable_fifo(s3))
				s3_wait_fifo_idle(s3);
			temp = s3->accel.short_stroke;
		} else {
			temp = s3_accel_read((addr & 0xfffe), p);
			temp |= s3_accel_read((addr & 0xfffe) + 1, p) << 8;
		}
	} else if (s3_cpu_dest(s3)) {
	    READ_PIXTRANS_WORD

		switch (s3->accel.cmd & 0x600) {
			case 0x000:
				if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
					if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40))
						s3_accel_start(8, 1, temp | (temp << 16), 0, s3);
					else
						s3_accel_start(1, 1, 0xffffffff, temp | (temp << 16), s3);
				} else
					s3_accel_start(1, 1, 0xffffffff, temp | (temp << 16), s3);
				break;
			case 0x200:
				if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
					if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40))
						s3_accel_start(16, 1, temp | (temp << 16), 0, s3);
					else
						s3_accel_start(2, 1, 0xffffffff, temp | (temp << 16), s3);
				} else
					s3_accel_start(2, 1, 0xffffffff, temp | (temp << 16), s3);
				break;
		}
	}
    }

    return temp;
}


static uint32_t
s3_accel_read_l(uint32_t addr, void *p)
{
    s3_t *s3 = (s3_t *)p;
    svga_t *svga = &s3->svga;
    uint32_t temp = 0x00000000;
	uint16_t *vram_w = (uint16_t *)svga->vram;

	if (!s3->enable_8514)
	return 0xffffffff;

    if (svga->crtc[0x53] & 0x08) {
	switch (addr & 0x1fffc) {
		case 0x8180:
		temp = s3->streams.pri_ctrl;
		break;
		case 0x8184:
		temp = s3->streams.chroma_ctrl;
		break;
		case 0x8190:
		temp = s3->streams.sec_ctrl;
		break;
		case 0x8194:
		temp = s3->streams.chroma_upper_bound;
		break;
		case 0x8198:
		temp = s3->streams.sec_filter;
		break;
		case 0x81a0:
		temp = s3->streams.blend_ctrl;
		break;
		case 0x81c0:
		temp = s3->streams.pri_fb0;
		break;
		case 0x81c4:
		temp = s3->streams.pri_fb1;
		break;
		case 0x81c8:
		temp = s3->streams.pri_stride;
		break;
		case 0x81cc:
		temp = s3->streams.buffer_ctrl;
		break;
		case 0x81d0:
		temp = s3->streams.sec_fb0;
		break;
		case 0x81d4:
		temp = s3->streams.sec_fb1;
		break;
		case 0x81d8:
		temp = s3->streams.sec_stride;
		break;
		case 0x81dc:
		temp = s3->streams.overlay_ctrl;
		break;
		case 0x81e0:
		temp = s3->streams.k1_vert_scale;
		break;
		case 0x81e4:
		temp = s3->streams.k2_vert_scale;
		break;
		case 0x81e8:
		temp = s3->streams.dda_vert_accumulator;
		break;
		case 0x81ec:
		temp = s3->streams.fifo_ctrl;
		break;
		case 0x81f0:
		temp = s3->streams.pri_start;
		break;
		case 0x81f4:
		temp = s3->streams.pri_size;
		break;
		case 0x81f8:
		temp = s3->streams.sec_start;
		break;
		case 0x81fc:
		temp = s3->streams.sec_size;
		break;

		case 0x18080:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		temp = 0;
		break;
		case 0x18088:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		temp = s3->videoengine.cntl;
		if (s3->bpp == 1) { /*The actual bpp is decided by the guest when idf is the same as odf*/
			if (s3->videoengine.idf == 0 && s3->videoengine.odf == 0) {
				if (svga->bpp == 15)
					temp |= 0x600000;
				else
					temp |= 0x700000;
			}
		} else if (s3->bpp > 1) {
			if (s3->videoengine.idf == 0 && s3->videoengine.odf == 0)
				temp |= 0x300000;
		}
		break;
		case 0x1808c:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		temp = s3->videoengine.stretch_filt_const;
		break;
		case 0x18090:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		temp = s3->videoengine.src_dst_step;
		break;
		case 0x18094:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		temp = s3->videoengine.crop;
		break;
		case 0x18098:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		temp = s3->videoengine.src_base;
		break;
		case 0x1809c:
		if (s3_enable_fifo(s3))
			s3_wait_fifo_idle(s3);
		temp = s3->videoengine.dest_base;
		if (s3->videoengine.busy) {
			temp |= (1 << 31);
		} else {
			temp &= ~(1 << 31);
		}
		break;

		default:
		temp = s3_accel_read_w(addr, p) | (s3_accel_read_w(addr + 2, p) << 16);
		break;
	}
    } else {
	if (addr & 0x8000) {
	    temp = s3_accel_read((addr & 0xfffc), p);
	    temp |= s3_accel_read((addr & 0xfffc) + 1, p) << 8;
	    temp |= s3_accel_read((addr & 0xfffc) + 2, p) << 16;
	    temp |= s3_accel_read((addr & 0xfffc) + 3, p) << 24;
	} else if (s3_cpu_dest(s3)) {
	    READ_PIXTRANS_LONG

		switch (s3->accel.cmd & 0x600) {
			case 0x000:
				if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
					if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
						s3_accel_start(8, 1, temp, 0, s3);
						s3_accel_start(8, 1, temp >> 16, 0, s3);
					} else {
						s3_accel_start(1, 1, 0xffffffff, temp, s3);
						s3_accel_start(1, 1, 0xffffffff, temp >> 16, s3);
					}
				} else {
					s3_accel_start(1, 1, 0xffffffff, temp, s3);
					s3_accel_start(1, 1, 0xffffffff, temp >> 16, s3);
				}
				break;
			case 0x200:
				if (((s3->accel.multifunc[0xa] & 0xc0) == 0x80) || (s3->accel.cmd & 2)) {
					if (((s3->accel.frgd_mix & 0x60) != 0x40) || ((s3->accel.bkgd_mix & 0x60) != 0x40)) {
						s3_accel_start(16, 1, temp, 0, s3);
						s3_accel_start(16, 1, temp >> 16, 0, s3);
					} else {
						s3_accel_start(2, 1, 0xffffffff, temp, s3);
						s3_accel_start(2, 1, 0xffffffff, temp >> 16, s3);
					}
				} else {
					s3_accel_start(2, 1, 0xffffffff, temp, s3);
					s3_accel_start(2, 1, 0xffffffff, temp >> 16, s3);
				}
				break;
		}
	}
    }

    return temp;
}

static void
polygon_setup(s3_t *s3)
{
	if (s3->accel.point_1_updated)
	{
		int start_x = s3->accel.poly_cx;
		int start_y = s3->accel.poly_cy;
		int end_x = s3->accel.destx_distp << 20;
		int end_y = s3->accel.desty_axstp;

		if (end_y - start_y)
			s3->accel.poly_dx1 = (end_x - start_x) / (end_y - start_y);
		else
			s3->accel.poly_dx1 = 0;

		s3->accel.point_1_updated = 0;

		if (end_y == s3->accel.poly_cy)
		{
			s3->accel.poly_cx = end_x;
			s3->accel.poly_x = end_x >> 20;
		}
	}
	if (s3->accel.point_2_updated)
	{
		int start_x = s3->accel.poly_cx2;
		int start_y = s3->accel.poly_cy2;
		int end_x = s3->accel.x2 << 20;
		int end_y = s3->accel.desty_axstp2;

		if (end_y - start_y)
			s3->accel.poly_dx2 = (end_x - start_x) / (end_y - start_y);
		else
			s3->accel.poly_dx2 = 0;

		s3->accel.point_2_updated = 0;

		if (end_y == s3->accel.poly_cy)
			s3->accel.poly_cx2 = end_x;
	}
}

#define READ(addr, dat) if (s3->bpp == 0 && !s3->color_16bit) dat = svga->vram[dword_remap(svga, addr) & s3->vram_mask]; \
			    else if (s3->bpp == 1 || s3->color_16bit) dat = vram_w[dword_remap_w(svga, addr) & (s3->vram_mask >> 1)]; \
				else if (s3->bpp == 2) dat = svga->vram[dword_remap(svga, addr) & s3->vram_mask]; \
				else dat = vram_l[dword_remap_l(svga, addr) & (s3->vram_mask >> 2)];

#define MIX_READ {											       \
			switch ((mix_dat & mix_mask) ? (s3->accel.frgd_mix & 0xf) : (s3->accel.bkgd_mix & 0xf)) \
			{										       \
				case 0x0: dest_dat =	     ~dest_dat;  break;			     \
				case 0x1: dest_dat =  0;		     break;			     \
				case 0x2: dest_dat = ~0;		     break;			     \
				case 0x3: dest_dat =	      dest_dat;  break;			     \
				case 0x4: dest_dat =  ~src_dat;	      break;			     \
				case 0x5: dest_dat =   src_dat ^  dest_dat;  break;			     \
				case 0x6: dest_dat = ~(src_dat ^  dest_dat); break;			     \
				case 0x7: dest_dat =   src_dat;	      break;			     \
				case 0x8: dest_dat = ~(src_dat &  dest_dat); break;			     \
				case 0x9: dest_dat =  ~src_dat |  dest_dat;  break;			     \
				case 0xa: dest_dat =   src_dat | ~dest_dat;  break;			     \
				case 0xb: dest_dat =   src_dat |  dest_dat;  break;			     \
				case 0xc: dest_dat =   src_dat &  dest_dat;  break;			     \
				case 0xd: dest_dat =   src_dat & ~dest_dat;  break;			     \
				case 0xe: dest_dat =  ~src_dat &  dest_dat;  break;			     \
				case 0xf: dest_dat = ~(src_dat |  dest_dat); break;			     \
			}										       \
		 }


#define MIX     {											       \
			old_dest_dat = dest_dat;						       \
			MIX_READ										\
			dest_dat = (dest_dat & s3->accel.wrt_mask) | (old_dest_dat & ~s3->accel.wrt_mask);      \
		 }



#define ROPMIX_READ(D, P, S) \
	{										\
		switch (rop) {								\
			case 0x00: out = 0; break;					\
			case 0x01: out = ~(D | (P | S)); break;				\
			case 0x02: out = D & ~(P | S); break;				\
			case 0x03: out = ~(P | S); break;				\
			case 0x04: out = S & ~(D | P); break;				\
			case 0x05: out = ~(D | P); break;				\
			case 0x06: out = ~(P | ~(D ^ S)); break;			\
			case 0x07: out = ~(P | (D & S)); break;				\
			case 0x08: out = S & (D & ~P); break;				\
			case 0x09: out = ~(P | (D ^ S)); break;				\
			case 0x0a: out = D & ~P; break;					\
			case 0x0b: out = ~(P | (S & ~D)); break;			\
			case 0x0c: out = S & ~P; break;					\
			case 0x0d: out = ~(P | (D & ~S)); break;			\
			case 0x0e: out = ~(P | ~(D | S)); break;			\
			case 0x0f: out = ~P; break;					\
			case 0x10: out = P & ~(D | S); break;				\
			case 0x11: out = ~(D | S); break;				\
			case 0x12: out = ~(S | ~(D ^ P)); break;			\
			case 0x13: out = ~(S | (D & P)); break;				\
			case 0x14: out = ~(D | ~(P ^ S)); break;			\
			case 0x15: out = ~(D | (P & S)); break;				\
			case 0x16: out = P ^ (S ^ (D & ~(P & S))); break;		\
			case 0x17: out = ~(S ^ ((S ^ P) & (D ^ S))); break;		\
			case 0x18: out = (S ^ P) & (P ^ D); break;			\
			case 0x19: out = ~(S ^ (D & ~(P & S))); break;			\
			case 0x1a: out = P ^ (D | (S & P)); break;			\
			case 0x1b: out = ~(S ^ (D & (P ^ S))); break;			\
			case 0x1c: out = P ^ (S | (D & P)); break;			\
			case 0x1d: out = ~(D ^ (S & (P ^ D))); break;			\
			case 0x1e: out = P ^ (D | S); break;				\
			case 0x1f: out = ~(P & (D | S)); break;				\
			case 0x20: out = D & (P & ~S); break;				\
			case 0x21: out = ~(S | (D ^ P)); break;				\
			case 0x22: out = D & ~S; break;					\
			case 0x23: out = ~(S | (P & ~D)); break;			\
			case 0x24: out = (S ^ P) & (D ^ S); break;			\
			case 0x25: out = ~(P ^ (D & ~(S & P))); break;			\
			case 0x26: out = S ^ (D | (P & S)); break;			\
			case 0x27: out = S ^ (D | ~(P ^ S)); break;			\
			case 0x28: out = D & (P ^ S); break;				\
			case 0x29: out = ~(P ^ (S ^ (D | (P & S)))); break;		\
			case 0x2a: out = D & ~(P & S); break;				\
			case 0x2b: out = ~(S ^ ((S ^ P) & (P ^ D))); break;		\
			case 0x2c: out = S ^ (P & (D | S)); break;			\
			case 0x2d: out = P ^ (S | ~D); break;				\
			case 0x2e: out = P ^ (S | (D ^ P)); break;			\
			case 0x2f: out = ~(P & (S | ~D)); break;			\
			case 0x30: out = P & ~S; break;					\
			case 0x31: out = ~(S | (D & ~P)); break;			\
			case 0x32: out = S ^ (D | (P | S)); break;			\
			case 0x33: out = ~S; break;					\
			case 0x34: out = S ^ (P | (D & S)); break;			\
			case 0x35: out = S ^ (P | ~(D ^ S)); break;			\
			case 0x36: out = S ^ (D | P); break;				\
			case 0x37: out = ~(S & (D | P)); break;				\
			case 0x38: out = P ^ (S & (D | P)); break;			\
			case 0x39: out = S ^ (P | ~D); break;				\
			case 0x3a: out = S ^ (P | (D ^ S)); break;			\
			case 0x3b: out = ~(S & (P | ~D)); break;			\
			case 0x3c: out = P ^ S; break;					\
			case 0x3d: out = S ^ (P | ~(D | S)); break;			\
			case 0x3e: out = S ^ (P | (D & ~S)); break;			\
			case 0x3f: out = ~(P & S); break;				\
			case 0x40: out = P & (S & ~D); break;				\
			case 0x41: out = ~(D | (P ^ S)); break;				\
			case 0x42: out = (S ^ D) & (P ^ D); break;			\
			case 0x43: out = ~(S ^ (P & ~(D & S))); break;			\
			case 0x44: out = S & ~D; break;					\
			case 0x45: out = ~(D | (P & ~S)); break;			\
			case 0x46: out = D ^ (S | (P & D)); break;			\
			case 0x47: out = ~(P ^ (S & (D ^ P))); break;			\
			case 0x48: out = S & (D ^ P); break;				\
			case 0x49: out = ~(P ^ (D ^ (S | (P & D)))); break;		\
			case 0x4a: out = D ^ (P & (S | D)); break;			\
			case 0x4b: out = P ^ (D | ~S); break;				\
			case 0x4c: out = S & ~(D & P); break;				\
			case 0x4d: out = ~(S ^ ((S ^ P) | (D ^ S))); break;		\
			case 0x4e: out = P ^ (D | (S ^ P)); break;			\
			case 0x4f: out = ~(P & (D | ~S)); break;			\
			case 0x50: out = P & ~D; break;					\
			case 0x51: out = ~(D | (S & ~P)); break;			\
			case 0x52: out = D ^ (P | (S & D)); break;			\
			case 0x53: out = ~(S ^ (P & (D ^ S))); break;			\
			case 0x54: out = ~(D | ~(P | S)); break;			\
			case 0x55: out = ~D; break;					\
			case 0x56: out = D ^ (P | S); break;				\
			case 0x57: out = ~(D & (P | S)); break;				\
			case 0x58: out = P ^ (D & (S | P)); break;			\
			case 0x59: out = D ^ (P | ~S); break;				\
			case 0x5a: out = D ^ P; break;					\
			case 0x5b: out = D ^ (P | ~(S | D)); break;			\
			case 0x5c: out = D ^ (P | (S ^ D)); break;			\
			case 0x5d: out = ~(D & (P | ~S)); break;			\
			case 0x5e: out = D ^ (P | (S & ~D)); break;			\
			case 0x5f: out = ~(D & P); break;				\
			case 0x60: out = P & (D ^ S); break;				\
			case 0x61: out = ~(D ^ (S ^ (P | (D & S)))); break;		\
			case 0x62: out = D ^ (S & (P | D)); break;			\
			case 0x63: out = S ^ (D | ~P); break;				\
			case 0x64: out = S ^ (D & (P | S)); break;			\
			case 0x65: out = D ^ (S | ~P); break;				\
			case 0x66: out = D ^ S; break;					\
			case 0x67: out = S ^ (D | ~(P | S)); break;			\
			case 0x68: out = ~(D ^ (S ^ (P | ~(D | S)))); break;		\
			case 0x69: out = ~(P ^ (D ^ S)); break;				\
			case 0x6a: out = D ^ (P & S); break;				\
			case 0x6b: out = ~(P ^ (S ^ (D & (P | S)))); break;		\
			case 0x6c: out = S ^ (D & P); break;				\
			case 0x6d: out = ~(P ^ (D ^ (S & (P | D)))); break;		\
			case 0x6e: out = S ^ (D & (P | ~S)); break;			\
			case 0x6f: out = ~(P & ~(D ^ S)); break;			\
			case 0x70: out = P & ~(D & S); break;				\
			case 0x71: out = ~(S ^ ((S ^ D) & (P ^ D))); break;		\
			case 0x72: out = S ^ (D | (P ^ S)); break;			\
			case 0x73: out = ~(S & (D | ~P)); break;			\
			case 0x74: out = D ^ (S | (P ^ D)); break;			\
			case 0x75: out = ~(D & (S | ~P)); break;			\
			case 0x76: out = S ^ (D | (P & ~S)); break;			\
			case 0x77: out = ~(D & S); break;				\
			case 0x78: out = P ^ (D & S); break;				\
			case 0x79: out = ~(D ^ (S ^ (P & (D | S)))); break;		\
			case 0x7a: out = D ^ (P & (S | ~D)); break;			\
			case 0x7b: out = ~(S & ~(D ^ P)); break;			\
			case 0x7c: out = S ^ (P & (D | ~S)); break;			\
			case 0x7d: out = ~(D & ~(P ^ S)); break;			\
			case 0x7e: out = (S ^ P) | (D ^ S); break;			\
			case 0x7f: out = ~(D & (P & S)); break;				\
			case 0x80: out = D & (P & S); break;				\
			case 0x81: out = ~((S ^ P) | (D ^ S)); break;			\
			case 0x82: out = D & ~(P ^ S); break;				\
			case 0x83: out = ~(S ^ (P & (D | ~S))); break;			\
			case 0x84: out = S & ~(D ^ P); break;				\
			case 0x85: out = ~(P ^ (D & (S | ~P))); break;			\
			case 0x86: out = D ^ (S ^ (P & (D | S))); break;		\
			case 0x87: out = ~(P ^ (D & S)); break;				\
			case 0x88: out = D & S; break;					\
			case 0x89: out = ~(S ^ (D | (P & ~S))); break;			\
			case 0x8a: out = D & (S | ~P); break;				\
			case 0x8b: out = ~(D ^ (S | (P ^ D))); break;			\
			case 0x8c: out = S & (D | ~P); break;				\
			case 0x8d: out = ~(S ^ (D | (P ^ S))); break;			\
			case 0x8e: out = S ^ ((S ^ D) & (P ^ D)); break;		\
			case 0x8f: out = ~(P & ~(D & S)); break;			\
			case 0x90: out = P & ~(D ^ S); break;				\
			case 0x91: out = ~(S ^ (D & (P | ~S))); break;			\
			case 0x92: out = D ^ (P ^ (S & (D | P))); break;		\
			case 0x93: out = ~(S ^ (P & D)); break;				\
			case 0x94: out = P ^ (S ^ (D & (P | S))); break;		\
			case 0x95: out = ~(D ^ (P & S)); break;				\
			case 0x96: out = D ^ (P ^ S); break;				\
			case 0x97: out = P ^ (S ^ (D | ~(P | S))); break;		\
			case 0x98: out = ~(S ^ (D | ~(P | S))); break;			\
			case 0x99: out = ~(D ^ S); break;				\
			case 0x9a: out = D ^ (P & ~S); break;				\
			case 0x9b: out = ~(S ^ (D & (P | S))); break;			\
			case 0x9c: out = S ^ (P & ~D); break;				\
			case 0x9d: out = ~(D ^ (S & (P | D))); break;			\
			case 0x9e: out = D ^ (S ^ (P | (D & S))); break;		\
			case 0x9f: out = ~(P & (D ^ S)); break;				\
			case 0xa0: out = D & P; break;					\
			case 0xa1: out = ~(P ^ (D | (S & ~P))); break;			\
			case 0xa2: out = D & (P | ~S); break;				\
			case 0xa3: out = ~(D ^ (P | (S ^ D))); break;			\
			case 0xa4: out = ~(P ^ (D | ~(S | P))); break;			\
			case 0xa5: out = ~(P ^ D); break;				\
			case 0xa6: out = D ^ (S & ~P); break;				\
			case 0xa7: out = ~(P ^ (D & (S | P))); break;			\
			case 0xa8: out = D & (P | S); break;				\
			case 0xa9: out = ~(D ^ (P | S)); break;				\
			case 0xaa: out = D; break;					\
			case 0xab: out = D | ~(P | S); break;				\
			case 0xac: out = S ^ (P & (D ^ S)); break;			\
			case 0xad: out = ~(D ^ (P | (S & D))); break;			\
			case 0xae: out = D | (S & ~P); break;				\
			case 0xaf: out = D | ~P; break;					\
			case 0xb0: out = P & (D | ~S); break;				\
			case 0xb1: out = ~(P ^ (D | (S ^ P))); break;			\
			case 0xb2: out = S ^ ((S ^ P) | (D ^ S)); break;		\
			case 0xb3: out = ~(S & ~(D & P)); break;			\
			case 0xb4: out = P ^ (S & ~D); break;				\
			case 0xb5: out = ~(D ^ (P & (S | D))); break;			\
			case 0xb6: out = D ^ (P ^ (S | (D & P))); break;		\
			case 0xb7: out = ~(S & (D ^ P)); break;				\
			case 0xb8: out = P ^ (S & (D ^ P)); break;			\
			case 0xb9: out = ~(D ^ (S | (P & D))); break;			\
			case 0xba: out = D | (P & ~S); break;				\
			case 0xbb: out = D | ~S; break;					\
			case 0xbc: out = S ^ (P & ~(D & S)); break;			\
			case 0xbd: out = ~((S ^ D) & (P ^ D)); break;			\
			case 0xbe: out = D | (P ^ S); break;				\
			case 0xbf: out = D | ~(P & S); break;				\
			case 0xc0: out = P & S; break;					\
			case 0xc1: out = ~(S ^ (P | (D & ~S))); break;			\
			case 0xc2: out = ~(S ^ (P | ~(D | S))); break;			\
			case 0xc3: out = ~(P ^ S); break;				\
			case 0xc4: out = S & (P | ~D); break;				\
			case 0xc5: out = ~(S ^ (P | (D ^ S))); break;			\
			case 0xc6: out = S ^ (D & ~P); break;				\
			case 0xc7: out = ~(P ^ (S & (D | P))); break;			\
			case 0xc8: out = S & (D | P); break;				\
			case 0xc9: out = ~(S ^ (P | D)); break;				\
			case 0xca: out = D ^ (P & (S ^ D)); break;			\
			case 0xcb: out = ~(S ^ (P | (D & S))); break;			\
			case 0xcc: out = S; break;					\
			case 0xcd: out = S | ~(D | P); break;				\
			case 0xce: out = S | (D & ~P); break;				\
			case 0xcf: out = S | ~P; break;					\
			case 0xd0: out = P & (S | ~D); break;				\
			case 0xd1: out = ~(P ^ (S | (D ^ P))); break;			\
			case 0xd2: out = P ^ (D & ~S); break;				\
			case 0xd3: out = ~(S ^ (P & (D | S))); break;			\
			case 0xd4: out = S ^ ((S ^ P) & (P ^ D)); break;		\
			case 0xd5: out = ~(D & ~(P & S)); break;			\
			case 0xd6: out = P ^ (S ^ (D | (P & S))); break;		\
			case 0xd7: out = ~(D & (P ^ S)); break;				\
			case 0xd8: out = P ^ (D & (S ^ P)); break;			\
			case 0xd9: out = ~(S ^ (D | (P & S))); break;			\
			case 0xda: out = D ^ (P & ~(S & D)); break;			\
			case 0xdb: out = ~((S ^ P) & (D ^ S)); break;			\
			case 0xdc: out = S | (P & ~D); break;				\
			case 0xdd: out = S | ~D; break;					\
			case 0xde: out = S | (D ^ P); break;				\
			case 0xdf: out = S | ~(D & P); break;				\
			case 0xe0: out = P & (D | S); break;				\
			case 0xe1: out = ~(P ^ (D | S)); break;				\
			case 0xe2: out = D ^ (S & (P ^ D)); break;			\
			case 0xe3: out = ~(P ^ (S | (D & P))); break;			\
			case 0xe4: out = S ^ (D & (P ^ S)); break;			\
			case 0xe5: out = ~(P ^ (D | (S & P))); break;			\
			case 0xe6: out = S ^ (D & ~(P & S)); break;			\
			case 0xe7: out = ~((S ^ P) & (P ^ D)); break;			\
			case 0xe8: out = S ^ ((S ^ P) & (D ^ S)); break;		\
			case 0xe9: out = ~(D ^ (S ^ (P & ~(D & S)))); break;		\
			case 0xea: out = D | (P & S); break;				\
			case 0xeb: out = D | ~(P ^ S); break;				\
			case 0xec: out = S | (D & P); break;				\
			case 0xed: out = S | ~(D ^ P); break;				\
			case 0xee: out = D | S; break;					\
			case 0xef: out = S | (D | ~P); break;				\
			case 0xf0: out = P; break;					\
			case 0xf1: out = P | ~(D | S); break;				\
			case 0xf2: out = P | (D & ~S); break;				\
			case 0xf3: out = P | ~S; break;					\
			case 0xf4: out = P | (S & ~D); break;				\
			case 0xf5: out = P | ~D; break;					\
			case 0xf6: out = P | (D ^ S); break;				\
			case 0xf7: out = P | ~(D & S); break;				\
			case 0xf8: out = P | (D & S); break;				\
			case 0xf9: out = P | ~(D ^ S); break;				\
			case 0xfa: out = D | P; break; 					\
			case 0xfb: out = D | (P | ~S); break; 				\
			case 0xfc: out = P | S; break; 					\
			case 0xfd: out = P | (S | ~D); break; 				\
			case 0xfe: out = D | (P | S); break; 				\
			case 0xff: out = ~0; break; 					\
		}									\
	}


#define ROPMIX     {											       \
			old_dest_dat = dest_dat;						       \
			ROPMIX_READ(dest_dat, pat_dat, src_dat);					\
			out = (out & s3->accel.wrt_mask) | (old_dest_dat & ~s3->accel.wrt_mask);      \
		 }


#define WRITE(addr, dat)     if (s3->bpp == 0 && !s3->color_16bit)									       \
			{											       \
				svga->vram[dword_remap(svga, addr) & s3->vram_mask] = dat;	\
				svga->changedvram[(dword_remap(svga, addr) & s3->vram_mask) >> 12] = changeframecount;		   \
			}											       \
			else if (s3->bpp == 1 || s3->color_16bit)									  \
			{											       \
				vram_w[dword_remap_w(svga, addr) & (s3->vram_mask >> 1)] = dat;				       \
				svga->changedvram[(dword_remap_w(svga, addr) & (s3->vram_mask >> 1)) >> 11] = changeframecount;	    \
			}											       \
			else if (s3->bpp == 2)									  \
			{											       \
				svga->vram[dword_remap(svga, addr) & s3->vram_mask] = dat;					  \
				svga->changedvram[(dword_remap(svga, addr) & s3->vram_mask) >> 12] = changeframecount;		   \
			}					\
			else											    \
			{											       \
				vram_l[dword_remap_l(svga, addr) & (s3->vram_mask >> 2)] = dat;				       \
				svga->changedvram[(dword_remap_l(svga, addr) & (s3->vram_mask >> 2)) >> 10] = changeframecount;	    \
			}


static __inline void
convert_to_rgb32(int idf, int is_yuv, uint32_t val, uint8_t *r, uint8_t *g, uint8_t *b, uint8_t *r2, uint8_t *g2, uint8_t *b2)
{
    static double dr = 0.0, dg = 0.0, db = 0.0;
    static double dY1 = 0.0, dCr = 0.0, dY2 = 0.0, dCb = 0.0;
    static double dU = 0.0, dV = 0.0;

    switch (idf) {
	case 0: /* 8 bpp, RGB 3-3-2 */
		dr = (double) ((val >> 5) & 0x07);
		dg = (double) ((val >> 2) & 0x07);
		db = (double) (val & 0x03);
		dr = (dr / 7.0) * 255.0;
		dg = (dg / 7.0) * 255.0;
		db = (db / 3.0) * 255.0;
		break;
	case 3:	/* 32bpp, RGB 8-8-8 */
		dr = (double) ((val >> 16) & 0xff);
		dg = (double) ((val >> 8) & 0xff);
		db = (double) (val & 0xff);
		break;
	case 4:	/* YCbCr */
		if (is_yuv) {
			dU = ((double) (val & 0xff)) - 128.0;
			dY1 = (double) ((val >> 8) & 0xff);
			dY1 = (298.0 * (dY1 - 16.0)) / 256.0;
			dV = ((double) ((val >> 16) & 0xff)) - 128.0;
			dY2 = (double) ((val >> 24) & 0xff);
			dY2 = (298.0 * (dY2 - 16.0)) / 256.0;

			dr = (309.0 * dV) / 256.0;
			dg = ((100.0 * dU) + (208.0 * dV)) / 256.0;
			db = (516.0 * dU) / 256.0;
		} else {
			dY1 = (double) (val & 0xff);
			dCr = ((double) ((val >> 8) & 0xff)) - 128.0;
			dY2 = (double) ((val >> 16) & 0xff);
			dCb = ((double) ((val >> 24) & 0xff)) - 128.0;

			dr = (359.0 * dCr) / 256.0;
			dg = ((88.0 * dCb) + (183.0 * dCr)) / 2560.0;
			db = (453.0 * dCr) / 256.0;
		}

		*r = (uint8_t) round(dY1 + dr);
		CLAMP(*r);
		*g = (uint8_t) round(dY1 - dg);
		CLAMP(*g);
		*b = (uint8_t) round(dY1 + db);
		CLAMP(*b);

		*r2 = (uint8_t) round(dY2 + dr);
		CLAMP(*r2);
		*g2 = (uint8_t) round(dY2 - dg);
		CLAMP(*g2);
		*b2 = (uint8_t) round(dY2 + db);
		CLAMP(*b2);
		return;
	case 5:	/* 16bpp, raw */
	case 7:	/* 16bpp, RGB 5-6-5 */
		dr = (double) ((val >> 11) & 0x1f);
		dg = (double) ((val >> 5) & 0x03f);
		db = (double) (val & 0x1f);
		dr = (dr / 31.0) * 255.0;
		dg = (dg / 63.0) * 255.0;
		db = (db / 31.0) * 255.0;
		break;
	case 6:	/* 15bpp, RGB 5-5-5 */
		dr = (double) ((val >> 10) & 0x1f);
		dg = (double) ((val >> 5) & 0x01f);
		db = (double) (val & 0x1f);
		dr = (dr / 31.0) * 255.0;
		dg = (dg / 31.0) * 255.0;
		db = (db / 31.0) * 255.0;
		break;
    }

    *r = (uint8_t) round(dr);
    *g = (uint8_t) round(dg);
    *b = (uint8_t) round(db);
}


static __inline void
convert_from_rgb32(int idf, int odf, int is_yuv, uint32_t *val, uint8_t r, uint8_t g, uint8_t b, uint8_t r2, uint8_t g2, uint8_t b2)
{
    static double dr = 0.0, dg = 0.0, db = 0.0;
    static double dr2 = 0.0, dg2 = 0.0, db2 = 0.0;
    static double dY1 = 0.0, dCr = 0.0, dY2 = 0.0, dCb = 0.0;
    static double dU = 0.0, dV = 0.0;

    dr = (double) r;
    dg = (double) g;
    db = (double) b;

    switch (odf) {
	case 0:		/* 8 bpp, RGB 3-3-2 */
		switch (idf) {
			case 3:
				*val = (((uint32_t) round(dr)) << 16) + (((uint32_t) round(dg)) << 8) + ((uint32_t) round(db));
				break;
			case 5:
			case 7:
				dr = (dr / 255.0) * 31.0;
				dg = (dg / 255.0) * 63.0;
				db = (db / 255.0) * 31.0;
				*val = (((uint32_t) round(dr)) << 11) + (((uint32_t) round(dg)) << 5) + ((uint32_t) round(db));
				break;
			case 6:
				dr = (dr / 255.0) * 31.0;
				dg = (dg / 255.0) * 31.0;
				db = (db / 255.0) * 31.0;
				*val = (((uint32_t) round(dr)) << 10) + (((uint32_t) round(dg)) << 5) + ((uint32_t) round(db));
				break;
			case 0:
			default:
				dr = (dr / 255.0) * 7.0;
				dg = (dg / 255.0) * 7.0;
				db = (db / 255.0) * 3.0;
				*val = (((uint32_t) round(dr)) << 5) + (((uint32_t) round(dg)) << 2) + ((uint32_t) round(db));
				break;
		}
		break;
	case 3:		/* 32bpp, RGB 8-8-8 */
		*val = (((uint32_t) round(dr)) << 16) + (((uint32_t) round(dg)) << 8) + ((uint32_t) round(db));
		break;
	case 4:		/* YCbCr */
		dr2 = (double) r2;
		dg2 = (double) g2;
		db2 = (double) b2;

		if (is_yuv) {
			dU = ((113046.0 * dg2) - (71552.0 * dr2) - (69488.0 * db2)) / 28509.0;
			dV = ((3328.0 * dr2) + (800.0 * db2) - (4128.0 * dg2)) / 663.0;
			dY1 = dr - ((309 * dV) / 256.0);
			dY2 = dr2 - ((309 * dV) / 256.0);

			*val = ((uint32_t) round(dU)) + (((uint32_t) round(dY1)) << 8) + (((uint32_t) round(dV)) << 16) + (((uint32_t) round(dY2)) << 24);
		} else {
			dCr = ((128.0 * db2) - (128.0 * dr2)) / 47.0;
			dCb = ((128.0 * dr2) - (128.0 * dg2) - (271.0 * dCr)) / 44.0;
			dY1 = dr - ((359.0 * dCr) / 256.0);
			dY2 = dr2 - ((359.0 * dCr) / 256.0);

			*val = ((uint32_t) round(dY1)) + (((uint32_t) round(dCr)) << 8) + (((uint32_t) round(dY2)) << 16) + (((uint32_t) round(dCb)) << 24);
		}
		return;
	case 5:		/* 16bpp, raw */
	case 7:		/* 16bpp, RGB 5-6-5 */
		dr = (dr / 255.0) * 31.0;
		dg = (dg / 255.0) * 63.0;
		db = (db / 255.0) * 31.0;
		*val = (((uint32_t) round(dr)) << 11) + (((uint32_t) round(dg)) << 5) + ((uint32_t) round(db));
		break;
	case 6:		/* 15bpp, RGB 5-5-5 */
		dr = (dr / 255.0) * 31.0;
		dg = (dg / 255.0) * 31.0;
		db = (db / 255.0) * 31.0;
		*val = (((uint32_t) round(dr)) << 10) + (((uint32_t) round(dg)) << 5) + ((uint32_t) round(db));
		break;
    }
}

/*To Do: Dithering, color space conversion.*/
static void
s3_visionx68_video_engine_op(uint32_t cpu_dat, s3_t *s3)
{
	svga_t *svga = &s3->svga;
	int idf, odf, host;
	int is_yuv;
	uint32_t src, dest = 0x00000000;
	uint8_t r = 0x00, g = 0x00, b = 0x00, r2 = 0x00, g2 = 0x00, b2 = 0x00;
	uint16_t *vram_w = (uint16_t *)svga->vram;
	uint32_t *vram_l = (uint32_t *)svga->vram;
	uint32_t k2 = 0, dda = 0, diff = 0;
	int count = -1;

	idf = s3->videoengine.idf;
	odf = s3->videoengine.odf;
	is_yuv = s3->videoengine.yuv;
	host = s3->videoengine.host_data;

	k2 = s3->videoengine.k2 - 0x700;
	dda = s3->videoengine.dda_init_accumulator - 0xf00;
	diff = 0xff - k2;

	s3->videoengine.busy = 1;

	if (host) {
		if (idf == 0 && odf == 0) {
			if (s3->bpp == 0)
				count = 4;
			else if (s3->bpp == 1)
				count = 2;
			else
				count = 1;
		} else {
			if (idf == 0)
				count = 4;
			else if (idf == 3)
				count = 1;
			else
				count = 2;
		}
	}

	if (s3->videoengine.input == 1) {
		if (s3->videoengine.scale_down) {
			if (s3->bpp > 1) {
				s3->videoengine.sx = k2 - dda + diff;
				s3->videoengine.sx_backup = s3->videoengine.len - s3->videoengine.start;
			} else {
				s3->videoengine.sx = k2 - dda + diff - 1;
				s3->videoengine.sx_backup = s3->videoengine.len - s3->videoengine.start - 1;
			}
			s3->videoengine.sx_scale_inc = (double)((s3->videoengine.sx_backup >> 1));
			s3->videoengine.sx_scale_inc = s3->videoengine.sx_scale_inc / (double)((s3->videoengine.sx >> 1));
		} else {
			s3->videoengine.sx_scale = (double)(s3->videoengine.k1 - 2);
			s3->videoengine.sx_scale_dec = (s3->videoengine.sx_scale / (double)(s3->videoengine.len - s3->videoengine.start - 2));

			if (s3->videoengine.sx_scale_dec >= 0.5) {
				s3->videoengine.sx_scale++;
			}
		}

		if (s3->bpp == 0) {
			s3->videoengine.dest = s3->videoengine.dest_base + s3->width;
			s3->videoengine.src = s3->videoengine.src_base + s3->width;
		} else if (s3->bpp == 1) {
			s3->videoengine.dest = (s3->videoengine.dest_base >> 1) + s3->width;
			s3->videoengine.src = (s3->videoengine.src_base >> 1) + s3->width;
		} else {
			s3->videoengine.dest = (s3->videoengine.dest_base >> 2) + s3->width;
			s3->videoengine.src = (s3->videoengine.src_base >> 2) + s3->width;
		}
		s3->videoengine.input = 2;
		s3->videoengine.cx = 0.0;
		s3->videoengine.dx = 0.0;
	}

	while (count) {
		if (host) { /*Source data is CPU*/
			src = cpu_dat;
		} else { /*Source data is display memory*/
			READ(s3->videoengine.src + lround(s3->videoengine.cx), src);
		}

		convert_to_rgb32(idf, is_yuv, src, &r, &g, &b, &r2, &g2, &b2);

		convert_from_rgb32(idf, odf, is_yuv, &dest, r, g, b, r2, g2, b2);

		WRITE(s3->videoengine.dest + lround(s3->videoengine.dx), dest);

		if (s3->videoengine.scale_down) { /*Data shrink*/
			s3->videoengine.dx += s3->videoengine.sx_scale_inc;
			if (!host)
				s3->videoengine.cx += s3->videoengine.sx_scale_inc;

			s3->videoengine.sx--;

			if (host) {
				if (s3->bpp == 0) {
					cpu_dat >>= 8;
				} else {
					cpu_dat >>= 16;
				}
				count--;
			}

			if (s3->videoengine.sx < 0) {
				if (s3->bpp > 1) {
					s3->videoengine.sx = k2 - dda + diff;
					s3->videoengine.sx_backup = s3->videoengine.len - s3->videoengine.start;
				} else {
					s3->videoengine.sx = k2 - dda + diff - 1;
					s3->videoengine.sx_backup = s3->videoengine.len - s3->videoengine.start - 1;
				}
				s3->videoengine.sx_scale_inc = (double)((s3->videoengine.sx_backup >> 1));
				s3->videoengine.sx_scale_inc = s3->videoengine.sx_scale_inc / (double)((s3->videoengine.sx >> 1));

				s3->videoengine.cx = 0.0;
				s3->videoengine.dx = 0.0;

				if (s3->bpp == 0) {
					s3->videoengine.dest = s3->videoengine.dest_base + s3->width;
					s3->videoengine.src = s3->videoengine.src_base + s3->width;
				} else if (s3->bpp == 1) {
					s3->videoengine.dest = (s3->videoengine.dest_base >> 1) + s3->width;
					s3->videoengine.src = (s3->videoengine.src_base >> 1) + s3->width;
				} else {
					s3->videoengine.dest = (s3->videoengine.dest_base >> 2) + s3->width;
					s3->videoengine.src = (s3->videoengine.src_base >> 2) + s3->width;
				}

				if (s3->videoengine.input >= 1) {
					s3->videoengine.busy = 0;
					return;
				}
			}
		} else { /*Data stretch*/
			s3->videoengine.dx++;

			s3->videoengine.sx_scale -= s3->videoengine.sx_scale_dec;
			s3->videoengine.sx_scale_backup = (s3->videoengine.sx_scale - s3->videoengine.sx_scale_dec);

			s3->videoengine.sx = lround(s3->videoengine.sx_scale);
			s3->videoengine.sx_scale_int = lround(s3->videoengine.sx_scale_backup);

			if (s3->videoengine.sx > s3->videoengine.sx_scale_int) {
				if (host) {
					if (s3->bpp == 0)
						cpu_dat >>= 8;
					else
						cpu_dat >>= 16;
					count--;
				} else {
					s3->videoengine.cx++;
				}
			}

			if (s3->videoengine.sx < 0) {
				s3->videoengine.sx_scale = (double)(s3->videoengine.k1 - 2);
				s3->videoengine.sx_scale_dec = (s3->videoengine.sx_scale / (double)(s3->videoengine.len - s3->videoengine.start - 2));

				if (s3->videoengine.sx_scale_dec >= 0.5) {
					s3->videoengine.sx_scale++;
				}

				s3->videoengine.cx = 0.0;
				s3->videoengine.dx = 0.0;

				if (s3->bpp == 0) {
					s3->videoengine.dest = s3->videoengine.dest_base + s3->width;
					s3->videoengine.src = s3->videoengine.src_base + s3->width;
				} else if (s3->bpp == 1) {
					s3->videoengine.dest = (s3->videoengine.dest_base >> 1) + s3->width;
					s3->videoengine.src = (s3->videoengine.src_base >> 1) + s3->width;
				} else {
					s3->videoengine.dest = (s3->videoengine.dest_base >> 2) + s3->width;
					s3->videoengine.src = (s3->videoengine.src_base >> 2) + s3->width;
				}

				if (s3->videoengine.input >= 1) {
					s3->videoengine.busy = 0;
					return;
				}
			}
		}
	}
}

void
s3_short_stroke_start(int count, int cpu_input, uint32_t mix_dat, uint32_t cpu_dat, s3_t *s3, uint8_t ssv)
{
	if (!cpu_input) {
		s3->accel.ssv_len = ssv & 0x0f;
		s3->accel.ssv_dir = ssv & 0xe0;
		s3->accel.ssv_draw = ssv & 0x10;

		if (s3_cpu_src(s3)) {
			return; /*Wait for data from CPU*/
		}
	}

	s3_accel_start(count, cpu_input, mix_dat, cpu_dat, s3);
}

void
s3_accel_start(int count, int cpu_input, uint32_t mix_dat, uint32_t cpu_dat, s3_t *s3)
{
	svga_t *svga = &s3->svga;
	uint32_t src_dat = 0, dest_dat, old_dest_dat;
	uint32_t out, pat_dat = 0;
	int frgd_mix, bkgd_mix;
	int clip_t = s3->accel.multifunc[1] & 0xfff;
	int clip_l = s3->accel.multifunc[2] & 0xfff;
	int clip_b = s3->accel.multifunc[3] & 0xfff;
	int clip_r = s3->accel.multifunc[4] & 0xfff;
	int vram_mask = (s3->accel.multifunc[0xa] & 0xc0) == 0xc0;
	uint32_t mix_mask = 0;
	uint16_t *vram_w = (uint16_t *)svga->vram;
	uint32_t *vram_l = (uint32_t *)svga->vram;
	uint32_t compare = s3->accel.color_cmp;
	uint8_t rop = s3->accel.ropmix & 0xff;
	int compare_mode = (s3->accel.multifunc[0xe] >> 7) & 3;
	uint32_t rd_mask = s3->accel.rd_mask;
	int cmd = s3->accel.cmd >> 13;
	uint32_t srcbase, dstbase;

	if ((s3->chip >= S3_TRIO64 || s3->chip == S3_VISION968 || s3->chip == S3_VISION868) && (s3->accel.cmd & (1 << 11))) {
		cmd |= 8;
	}

	// SRC-BASE/DST-BASE
	if ((s3->accel.multifunc[0xd] >> 4) & 7) {
		srcbase = 0x100000 * ((s3->accel.multifunc[0xd] >> 4) & 3);
	} else {
		srcbase = 0x100000 * ((s3->accel.multifunc[0xe] >> 2) & 3);
	}
	if ((s3->accel.multifunc[0xd] >> 0) & 7) {
		dstbase = 0x100000 * ((s3->accel.multifunc[0xd] >> 0) & 3);
	} else {
		dstbase = 0x100000 * ((s3->accel.multifunc[0xe] >> 0) & 3);
	}
	if (s3->bpp == 1) {
		srcbase >>= 1;
		dstbase >>= 1;
	} else if (s3->bpp == 3) {
		srcbase >>= 2;
		dstbase >>= 2;
	}

	if ((s3->accel.cmd & 0x100) && ((s3_cpu_src(s3) || (s3_cpu_dest(s3)))) && (!cpu_input || (s3_enable_fifo(s3) == 0))) {
		s3->force_busy = 1;
	}

	if (!cpu_input)
		s3->accel.dat_count = 0;

	if (cpu_input && (((s3->accel.multifunc[0xa] & 0xc0) != 0x80) || (!(s3->accel.cmd & 2)))) {
		if ((s3->bpp == 3) && count == 2) {
			if (s3->accel.dat_count) {
				cpu_dat = ((cpu_dat & 0xffff) << 16) | s3->accel.dat_buf;
				count = 4;
				s3->accel.dat_count = 0;
			} else {
				s3->accel.dat_buf = cpu_dat & 0xffff;
				s3->accel.dat_count = 1;
			}
		}
		if (s3->bpp == 1 || s3->color_16bit)
			count >>= 1;
		if (s3->bpp == 3)
			count >>= 2;
	}

	if (s3->bpp == 0 && !s3->color_16bit)
		rd_mask &= 0xff;
	else if (s3->bpp == 1 || s3->color_16bit)
		rd_mask &= 0xffff;

	if (s3->bpp == 0 && !s3->color_16bit) compare &= 0xff;
	if (s3->bpp == 1 || s3->color_16bit) compare &= 0xffff;

	switch (s3->accel.cmd & 0x600)
	{
		case 0x000: mix_mask = 0x80; break;
		case 0x200: mix_mask = 0x8000; break;
		case 0x400: mix_mask = 0x80000000; break;
		case 0x600: mix_mask = (s3->chip == S3_TRIO32 || s3->chip >= S3_TRIO64V || s3->chip == S3_VISION968 || s3->chip == S3_VISION868) ? 0x80 : 0x80000000; break;
	}

	/*Bit 4 of the Command register is the draw yes bit, which enables writing to memory/reading from memory when enabled.
	  When this bit is disabled, no writing to memory/reading from memory is allowed. (This bit is almost meaningless on
	  the NOP command)*/
	switch (cmd)
	{
		case 0: /*NOP (Short Stroke Vectors)*/
		if (s3->accel.ssv_state == 0)
			break;

		frgd_mix = (s3->accel.frgd_mix >> 5) & 3;
		bkgd_mix = (s3->accel.bkgd_mix >> 5) & 3;

		if (s3->accel.cmd & 8) /*Radial*/
		{
			while (count-- && s3->accel.ssv_len >= 0)
			{
				if ((s3->accel.cx & 0xfff) >= clip_l && (s3->accel.cx & 0xfff) <= clip_r &&
					(s3->accel.cy & 0xfff) >= clip_t && (s3->accel.cy & 0xfff) <= clip_b)
				{
					switch ((mix_dat & mix_mask) ? frgd_mix : bkgd_mix)
					{
						case 0: src_dat = s3->accel.bkgd_color; break;
						case 1: src_dat = s3->accel.frgd_color; break;
						case 2: src_dat = cpu_dat; break;
						case 3: src_dat = 0; break;
					}

					if ((compare_mode == 2 && src_dat != compare) ||
						(compare_mode == 3 && src_dat == compare) ||
						 compare_mode < 2)
					{
						READ((s3->accel.cy * s3->width) + s3->accel.cx, dest_dat);

						MIX

						if (s3->accel.ssv_draw) {
							WRITE((s3->accel.cy * s3->width) + s3->accel.cx, dest_dat);
						}
					}
				}

				mix_dat <<= 1;
				mix_dat |= 1;
				if (s3->bpp == 0) cpu_dat >>= 8;
				else	      cpu_dat >>= 16;
				if (!s3->accel.ssv_len)
					break;

				switch (s3->accel.ssv_dir & 0xe0)
				{
					case 0x00: s3->accel.cx++;		 break;
					case 0x20: s3->accel.cx++; s3->accel.cy--; break;
					case 0x40:		 s3->accel.cy--; break;
					case 0x60: s3->accel.cx--; s3->accel.cy--; break;
					case 0x80: s3->accel.cx--;		 break;
					case 0xa0: s3->accel.cx--; s3->accel.cy++; break;
					case 0xc0:		 s3->accel.cy++; break;
					case 0xe0: s3->accel.cx++; s3->accel.cy++; break;
				}

				s3->accel.ssv_len--;
			}

			s3->accel.cur_x = s3->accel.cx;
			s3->accel.cur_y = s3->accel.cy;
		}
		break;

		case 1: /*Draw line*/
		if (!cpu_input) {
			s3->accel.cx   = s3->accel.cur_x;
			if (s3->accel.cur_x_bit12) s3->accel.cx |= ~0xfff;
			s3->accel.cy   = s3->accel.cur_y;
			if (s3->accel.cur_y_bit12) s3->accel.cy |= ~0xfff;

			s3->accel.sy = s3->accel.maj_axis_pcnt;

			if (s3_cpu_src(s3)) {
				return; /*Wait for data from CPU*/
			}
		}
		frgd_mix = (s3->accel.frgd_mix >> 5) & 3;
		bkgd_mix = (s3->accel.bkgd_mix >> 5) & 3;

		if (s3->accel.cmd & 8) /*Radial*/
		{
			while (count-- && s3->accel.sy >= 0)
			{
				if ((s3->accel.cx & 0xfff) >= clip_l && (s3->accel.cx & 0xfff) <= clip_r &&
				    (s3->accel.cy & 0xfff) >= clip_t && (s3->accel.cy & 0xfff) <= clip_b)
				{
					switch ((mix_dat & mix_mask) ? frgd_mix : bkgd_mix)
					{
						case 0: src_dat = s3->accel.bkgd_color; break;
						case 1: src_dat = s3->accel.frgd_color; break;
						case 2: src_dat = cpu_dat; break;
						case 3: src_dat = 0; break;
					}

					if ((compare_mode == 2 && src_dat != compare) ||
					    (compare_mode == 3 && src_dat == compare) ||
					     compare_mode < 2)
					{
						READ((s3->accel.cy * s3->width) + s3->accel.cx, dest_dat);

						MIX

						WRITE((s3->accel.cy * s3->width) + s3->accel.cx, dest_dat);
					}
				}

				mix_dat <<= 1;
				mix_dat |= 1;
				if (s3->bpp == 0 && !s3->color_16bit)
					cpu_dat >>= 8;
				else {
					cpu_dat >>= 16;
				}

				if (!s3->accel.sy) {
					break;
				}

				switch (s3->accel.cmd & 0xe0)
				{
					case 0x00: s3->accel.cx++;		 break;
					case 0x20: s3->accel.cx++; s3->accel.cy--; break;
					case 0x40:		 s3->accel.cy--; break;
					case 0x60: s3->accel.cx--; s3->accel.cy--; break;
					case 0x80: s3->accel.cx--;		 break;
					case 0xa0: s3->accel.cx--; s3->accel.cy++; break;
					case 0xc0:		 s3->accel.cy++; break;
					case 0xe0: s3->accel.cx++; s3->accel.cy++; break;
				}
				s3->accel.sy--;
			}
			s3->accel.cur_x = s3->accel.cx;
			s3->accel.cur_y = s3->accel.cy;
		}
		else /*Bresenham*/
		{
			if (s3->accel.b2e8_pix && s3_cpu_src(s3) && count == 16) { /*Stupid undocumented 0xB2E8 on 911/924*/
				count = s3->accel.maj_axis_pcnt + 1;
				s3->accel.temp_cnt = 16;
			}

			while (count-- && s3->accel.sy >= 0)
			{
				if (s3->accel.b2e8_pix && s3_cpu_src(s3) && s3->accel.temp_cnt == 0) {
					mix_dat >>= 16;
					s3->accel.temp_cnt = 16;
				}

				if ((s3->accel.cx & 0xfff) >= clip_l && (s3->accel.cx & 0xfff) <= clip_r &&
				    (s3->accel.cy & 0xfff) >= clip_t && (s3->accel.cy & 0xfff) <= clip_b)
				{
					switch ((mix_dat & mix_mask) ? frgd_mix : bkgd_mix)
					{
						case 0: src_dat = s3->accel.bkgd_color; break;
						case 1: src_dat = s3->accel.frgd_color; break;
						case 2: src_dat = cpu_dat; break;
						case 3: src_dat = 0; break;
					}

					if ((compare_mode == 2 && src_dat != compare) ||
					    (compare_mode == 3 && src_dat == compare) ||
					     compare_mode < 2)
					{
						READ((s3->accel.cy * s3->width) + s3->accel.cx, dest_dat);

						MIX

						WRITE((s3->accel.cy * s3->width) + s3->accel.cx, dest_dat);
					}
				}

				if (s3->accel.b2e8_pix && s3_cpu_src(s3)) {
					if (s3->accel.temp_cnt > 0) {
						s3->accel.temp_cnt--;
						mix_dat <<= 1;
						mix_dat |= 1;
					}
				} else {
					mix_dat <<= 1;
					mix_dat |= 1;
				}
				if (s3->bpp == 0 && !s3->color_16bit)
					cpu_dat >>= 8;
				else {
					cpu_dat >>= 16;
				}

				if (!s3->accel.sy) {
					break;
				}

				if (s3->accel.err_term >= s3->accel.maj_axis_pcnt) {
					s3->accel.err_term += s3->accel.destx_distp;
					/*Step minor axis*/
					switch (s3->accel.cmd & 0xe0)
					{
						case 0x00: s3->accel.cy--; break;
						case 0x20: s3->accel.cy--; break;
						case 0x40: s3->accel.cx--; break;
						case 0x60: s3->accel.cx++; break;
						case 0x80: s3->accel.cy++; break;
						case 0xa0: s3->accel.cy++; break;
						case 0xc0: s3->accel.cx--; break;
						case 0xe0: s3->accel.cx++; break;
					}
				} else {
					s3->accel.err_term += s3->accel.desty_axstp;
				}

				/*Step major axis*/
				switch (s3->accel.cmd & 0xe0)
				{
					case 0x00: s3->accel.cx--; break;
					case 0x20: s3->accel.cx++; break;
					case 0x40: s3->accel.cy--; break;
					case 0x60: s3->accel.cy--; break;
					case 0x80: s3->accel.cx--; break;
					case 0xa0: s3->accel.cx++; break;
					case 0xc0: s3->accel.cy++; break;
					case 0xe0: s3->accel.cy++; break;
				}
				s3->accel.sy--;
			}
			s3->accel.cur_x = s3->accel.cx;
			s3->accel.cur_y = s3->accel.cy;
		}
		break;

		case 2: /*Rectangle fill*/
		if (!cpu_input) /*!cpu_input is trigger to start operation*/
		{
			s3->accel.sx   = s3->accel.maj_axis_pcnt & 0xfff;
			s3->accel.sy   = s3->accel.multifunc[0]  & 0xfff;
			s3->accel.cx   = s3->accel.cur_x;
			s3->accel.cy   = s3->accel.cur_y;

			if (s3->accel.cur_x_bit12) {
				if (s3->accel.cx <= 0x7ff) {
					s3->accel.cx = s3->accel.cur_x_bitres & 0xfff;
				} else {
					s3->accel.cx |= ~0xfff;
				}
			}
			if (s3->accel.cur_y_bit12) {
				if (s3->accel.cy <= 0x7ff) {
					s3->accel.cy = s3->accel.cur_y_bitres & 0xfff;
				} else {
					s3->accel.cy |= ~0xfff;
				}
			}

			s3->accel.dest = dstbase + s3->accel.cy * s3->width;

			if (s3_cpu_src(s3)) {
				s3->data_available = 0;
				return; /*Wait for data from CPU*/
			} else if (s3_cpu_dest(s3)) {
				s3->data_available = 1;
				return;
			}
		}

		frgd_mix = (s3->accel.frgd_mix >> 5) & 3;
		bkgd_mix = (s3->accel.bkgd_mix >> 5) & 3;

		if (s3->accel.b2e8_pix && s3_cpu_src(s3) && count == 16) { /*Stupid undocumented 0xB2E8 on 911/924*/
			count = s3->accel.maj_axis_pcnt + 1;
			s3->accel.temp_cnt = 16;
		}

		while (count-- && s3->accel.sy >= 0)
		{
			if (s3->accel.b2e8_pix && s3_cpu_src(s3) && s3->accel.temp_cnt == 0) {
				mix_dat >>= 16;
				s3->accel.temp_cnt = 16;
			}

			if (((s3->accel.cx & 0xfff) >= clip_l && (s3->accel.cx & 0xfff) <= clip_r &&
			    (s3->accel.cy & 0xfff) >= clip_t && (s3->accel.cy & 0xfff) <= clip_b))
			{
				if (s3_cpu_dest(s3) && ((s3->accel.multifunc[0xa] & 0xc0) == 0x00)) {
					mix_dat = mix_mask; /* Mix data = forced to foreground register. */
				} else if (s3_cpu_dest(s3) && vram_mask) {
					/* Mix data = current video memory value. */
					READ(s3->accel.dest + s3->accel.cx, mix_dat);
					mix_dat = ((mix_dat & rd_mask) == rd_mask);
					mix_dat = mix_dat ? mix_mask : 0;
				}

				if (s3_cpu_dest(s3)) {
					READ(s3->accel.dest + s3->accel.cx, src_dat);
					if (vram_mask)
						src_dat = ((src_dat & rd_mask) == rd_mask);
				} else  switch ((mix_dat & mix_mask) ? frgd_mix : bkgd_mix)
				{
					case 0: src_dat = s3->accel.bkgd_color; break;
					case 1: src_dat = s3->accel.frgd_color; break;
					case 2: src_dat = cpu_dat; break;
					case 3: src_dat = 0; break;
				}

				if (((compare_mode == 2 && src_dat != compare) ||
				    (compare_mode == 3 && src_dat == compare) ||
				     compare_mode < 2))
				{
					READ(s3->accel.dest + s3->accel.cx, dest_dat);

					MIX

					if (s3->accel.cmd & 0x10) {
						WRITE(s3->accel.dest + s3->accel.cx, dest_dat);
					}
				}
			}

			if (s3->accel.b2e8_pix && s3_cpu_src(s3)) {
				if (s3->accel.temp_cnt > 0) {
					s3->accel.temp_cnt--;
					mix_dat <<= 1;
					mix_dat |= 1;
				}
			} else {
				mix_dat <<= 1;
				mix_dat |= 1;
			}

			if (s3->bpp == 0 && !s3->color_16bit)
				cpu_dat >>= 8;
			else {
				cpu_dat >>= 16;
			}

			if (s3->accel.cmd & 0x20)
				s3->accel.cx++;
			else
				s3->accel.cx--;

			s3->accel.sx--;
			if (s3->accel.sx < 0)
			{
				if (s3->accel.cmd & 0x20)
					s3->accel.cx -= (s3->accel.maj_axis_pcnt & 0xfff) + 1;
				else
					s3->accel.cx += (s3->accel.maj_axis_pcnt & 0xfff) + 1;
				s3->accel.sx    =  s3->accel.maj_axis_pcnt & 0xfff;

				if (s3->accel.cmd & 0x80)
					s3->accel.cy++;
				else
					s3->accel.cy--;

				s3->accel.dest = dstbase + s3->accel.cy * s3->width;
				s3->accel.sy--;

				if (cpu_input) {
					if (s3->accel.b2e8_pix) {
						s3->accel.cur_x = s3->accel.cx;
						s3->accel.cur_y = s3->accel.cy;
					}
					return;
				}
				if (s3->accel.sy < 0) {
					s3->accel.cur_x = s3->accel.cx;
					s3->accel.cur_y = s3->accel.cy;
					return;
				}
			}
		}
		break;


		case 3: /*Polygon Fill Solid (Vision868/968 and Trio64 only)*/
		{
			int end_y1, end_y2;

			if (s3->chip != S3_TRIO64 && s3->chip != S3_VISION968 && s3->chip != S3_VISION868)
				break;

			polygon_setup(s3);

			if ((s3->accel.cmd & 0x100) && !cpu_input) return; /*Wait for data from CPU*/

			end_y1 = s3->accel.desty_axstp;
			end_y2 = s3->accel.desty_axstp2;

			frgd_mix = (s3->accel.frgd_mix >> 5) & 3;

			while ((s3->accel.poly_cy < end_y1) && (s3->accel.poly_cy2 < end_y2))
			{
				int y = s3->accel.poly_cy;
				int x_count = ABS((s3->accel.poly_cx2 >> 20) - s3->accel.poly_x) + 1;

				s3->accel.dest = dstbase + y * s3->width;

				while (x_count-- && count--)
				{
					if ((s3->accel.poly_x & 0xfff) >= clip_l && (s3->accel.poly_x & 0xfff) <= clip_r &&
					    (s3->accel.poly_cy & 0xfff) >= clip_t && (s3->accel.poly_cy & 0xfff) <= clip_b)
					{
						switch (frgd_mix)
						{
							case 0: src_dat = s3->accel.bkgd_color; break;
							case 1: src_dat = s3->accel.frgd_color; break;
							case 2: src_dat = cpu_dat;	      break;
							case 3: src_dat = 0; /*Not supported?*/ break;
						}

						if (((compare_mode == 2 && src_dat != compare) ||
						    (compare_mode == 3 && src_dat == compare) ||
						     compare_mode < 2))
						{
							READ(s3->accel.dest + s3->accel.poly_x, dest_dat);

							MIX

							if (s3->accel.cmd & 0x10) {
								WRITE(s3->accel.dest + s3->accel.poly_x, dest_dat);
							}
						}
					}
					if (s3->bpp == 0) cpu_dat >>= 8;
					else	      cpu_dat >>= 16;

					if (s3->accel.poly_x < (s3->accel.poly_cx2 >> 20))
						s3->accel.poly_x++;
					else
						s3->accel.poly_x--;
				}

				s3->accel.poly_cx += s3->accel.poly_dx1;
				s3->accel.poly_cx2 += s3->accel.poly_dx2;
				s3->accel.poly_x = s3->accel.poly_cx >> 20;

				s3->accel.poly_cy++;
				s3->accel.poly_cy2++;

				if (!count)
					break;
			}

			s3->accel.cur_x = s3->accel.poly_cx & 0xfff;
			s3->accel.cur_y = s3->accel.poly_cy & 0xfff;
			s3->accel.cur_x2 = s3->accel.poly_cx2 & 0xfff;
			s3->accel.cur_y2 = s3->accel.poly_cy & 0xfff;
		}
		break;


		case 6: /*BitBlt*/
		if (!cpu_input) /*!cpu_input is trigger to start operation*/
		{
			s3->accel.sx   = s3->accel.maj_axis_pcnt & 0xfff;
			s3->accel.sy   = s3->accel.multifunc[0]  & 0xfff;

			s3->accel.dx   = s3->accel.destx_distp & 0xfff;
			if (s3->accel.destx_distp & 0x1000) s3->accel.dx |= ~0xfff;
			s3->accel.dy   = s3->accel.desty_axstp & 0xfff;
			if (s3->accel.desty_axstp & 0x1000) s3->accel.dy |= ~0xfff;

			s3->accel.cx   = s3->accel.cur_x;
			s3->accel.cy   = s3->accel.cur_y;

			if (s3->accel.destx_distp >= 0xfffff000) { /* avoid overflow */
				s3->accel.dx = s3->accel.destx_distp & 0xfff;
				if (s3->accel.cur_x_bit12) {
					if (s3->accel.cx <= 0x7ff) {
						s3->accel.cx = s3->accel.cur_x_bitres & 0xfff;
					} else {
						s3->accel.cx |= ~0xfff;
					}
				}
				if (s3->accel.cur_y_bitres > 0xfff)
					s3->accel.cy = s3->accel.cur_y_bitres;
			} else {
				if (s3->accel.cur_x_bit12) {
					if (s3->accel.cx <= 0x7ff) { /* overlap x */
						s3->accel.cx = s3->accel.cur_x_bitres & 0xfff;
					} else { /* x end is negative */
						s3->accel.cx |= ~0xfff;
					}
				}
				if (s3->accel.cur_y_bit12) {
					if (s3->accel.cy <= 0x7ff) { /* overlap y */
						s3->accel.cy = s3->accel.cur_y_bitres & 0xfff;
					} else { /* y end is negative */
						s3->accel.cy |= ~0xfff;
					}
				}
			}

			s3->accel.src  = srcbase + s3->accel.cy * s3->width;
			s3->accel.dest = dstbase + s3->accel.dy * s3->width;
		}

		if ((s3->accel.cmd & 0x100) && !cpu_input) {
			return; /*Wait for data from CPU*/
		}

		frgd_mix = (s3->accel.frgd_mix >> 5) & 3;
		bkgd_mix = (s3->accel.bkgd_mix >> 5) & 3;

		if (!cpu_input && frgd_mix == 3 && !vram_mask && !compare_mode &&
		    (s3->accel.cmd & 0xa0) == 0xa0 && (s3->accel.frgd_mix & 0xf) == 7 &&
			(s3->accel.bkgd_mix & 0xf) == 7)
		{
			while (1)
			{
				if (((s3->accel.dx & 0xfff) >= clip_l && (s3->accel.dx & 0xfff) <= clip_r &&
				    (s3->accel.dy & 0xfff) >= clip_t && (s3->accel.dy & 0xfff) <= clip_b))
				{
					READ(s3->accel.src + s3->accel.cx, src_dat);
					READ(s3->accel.dest + s3->accel.dx, dest_dat);

					dest_dat = (src_dat & s3->accel.wrt_mask) | (dest_dat & ~s3->accel.wrt_mask);

					if (s3->accel.cmd & 0x10) {
						WRITE(s3->accel.dest + s3->accel.dx, dest_dat);
					}
				}

				s3->accel.cx++;
				s3->accel.dx++;
				s3->accel.sx--;
				if (s3->accel.sx < 0)
				{
					s3->accel.cx -= (s3->accel.maj_axis_pcnt & 0xfff) + 1;
					s3->accel.dx -= (s3->accel.maj_axis_pcnt & 0xfff) + 1;
					s3->accel.sx  =  s3->accel.maj_axis_pcnt & 0xfff;

					s3->accel.cy++;
					s3->accel.dy++;

					s3->accel.src  = srcbase + s3->accel.cy * s3->width;
					s3->accel.dest = dstbase + s3->accel.dy * s3->width;

					s3->accel.sy--;

					if (s3->accel.sy < 0) {
						return;
					}
				}
			}
		}
		else
		{
			while (count-- && s3->accel.sy >= 0)
			{
				/*This is almost required by OS/2's software cursor or we will risk writing/reading garbage around it.*/
				if ((s3->accel.dx) >= clip_l && (s3->accel.dx) <= clip_r &&
					((s3->accel.dy) >= clip_t && (s3->accel.dy) <= clip_b))
				{
					if (vram_mask && (s3->accel.cmd & 0x10))
					{
						READ(s3->accel.src + s3->accel.cx, mix_dat);
						mix_dat = ((mix_dat & rd_mask) == rd_mask);
						mix_dat = mix_dat ? mix_mask : 0;
					}
					switch ((mix_dat & mix_mask) ? frgd_mix : bkgd_mix)
					{
						case 0: src_dat = s3->accel.bkgd_color;		  break;
						case 1: src_dat = s3->accel.frgd_color;		  break;
						case 2: src_dat = cpu_dat;			      break;
						case 3: READ(s3->accel.src + s3->accel.cx, src_dat);
							if (vram_mask && (s3->accel.cmd & 0x10))
								src_dat = ((src_dat & rd_mask) == rd_mask);
							break;
					}

					if ((((compare_mode == 2 && src_dat != compare) ||
						(compare_mode == 3 && src_dat == compare) ||
						compare_mode < 2)))
					{
						READ(s3->accel.dest + s3->accel.dx, dest_dat);

						MIX

						if ((!(s3->accel.cmd & 0x10) && vram_mask) || (s3->accel.cmd & 0x10)) {
							WRITE(s3->accel.dest + s3->accel.dx, dest_dat);
						}
					}
				}

				mix_dat <<= 1;
				mix_dat |= 1;

				if (s3->bpp == 0 && !s3->color_16bit)
					cpu_dat >>= 8;
				else {
					cpu_dat >>= 16;
				}

				if (s3->accel.cmd & 0x20)
				{
					s3->accel.cx++;
					s3->accel.dx++;
				}
				else
				{
					s3->accel.cx--;
					s3->accel.dx--;
				}
				s3->accel.sx--;
				if (s3->accel.sx < 0)
				{
					if (s3->accel.cmd & 0x20)
					{
						s3->accel.cx -= (s3->accel.maj_axis_pcnt & 0xfff) + 1;
						s3->accel.dx -= (s3->accel.maj_axis_pcnt & 0xfff) + 1;
					}
					else
					{
						s3->accel.cx += (s3->accel.maj_axis_pcnt & 0xfff) + 1;
						s3->accel.dx += (s3->accel.maj_axis_pcnt & 0xfff) + 1;
					}

					s3->accel.sx    =  s3->accel.maj_axis_pcnt & 0xfff;

					if (s3->accel.cmd & 0x80)
					{
						s3->accel.cy++;
						s3->accel.dy++;
					}
					else
					{
						s3->accel.cy--;
						s3->accel.dy--;
					}

					s3->accel.src  = srcbase + s3->accel.cy * s3->width;
					s3->accel.dest = dstbase + s3->accel.dy * s3->width;

					s3->accel.sy--;

					if (cpu_input) {
						return;
					}

					if (s3->accel.sy < 0) {
						return;
					}
				}
			}
		}
		break;

		case 7: /*Pattern fill - BitBlt but with source limited to 8x8*/
		if (!cpu_input) /*!cpu_input is trigger to start operation*/
		{
			s3->accel.sx   = s3->accel.maj_axis_pcnt & 0xfff;
			s3->accel.sy   = s3->accel.multifunc[0]  & 0xfff;

			s3->accel.dx   = s3->accel.destx_distp & 0xfff;
			if (s3->accel.destx_distp & 0x1000) s3->accel.dx |= ~0xfff;
			s3->accel.dy   = s3->accel.desty_axstp & 0xfff;
			if (s3->accel.desty_axstp & 0x1000) s3->accel.dy |= ~0xfff;

			s3->accel.cx   = s3->accel.cur_x & 0xfff;
			if (s3->accel.cur_x_bit12) s3->accel.cx |= ~0xfff;
			s3->accel.cy   = s3->accel.cur_y & 0xfff;
			if (s3->accel.cur_y_bit12) s3->accel.cy |= ~0xfff;

			/*Align source with destination*/
			s3->accel.pattern  = (s3->accel.cy * s3->width) + s3->accel.cx;
			s3->accel.dest     = dstbase + s3->accel.dy * s3->width;

			s3->accel.cx = s3->accel.dx & 7;
			s3->accel.cy = s3->accel.dy & 7;

			s3->accel.src  = srcbase + s3->accel.pattern + (s3->accel.cy * s3->width);
		}

		if ((s3->accel.cmd & 0x100) && !cpu_input) {
			return; /*Wait for data from CPU*/
		}

		frgd_mix = (s3->accel.frgd_mix >> 5) & 3;
		bkgd_mix = (s3->accel.bkgd_mix >> 5) & 3;

		while (count-- && s3->accel.sy >= 0)
		{
            if ((s3->accel.dx & 0xfff) >= clip_l && (s3->accel.dx & 0xfff) <= clip_r &&
			    (s3->accel.dy & 0xfff) >= clip_t && (s3->accel.dy & 0xfff) <= clip_b)
			{
				if (vram_mask)
				{
					READ(s3->accel.src + s3->accel.cx, mix_dat);
					mix_dat = ((mix_dat & rd_mask) == rd_mask);
					mix_dat = mix_dat ? mix_mask : 0;
				}
				switch ((mix_dat & mix_mask) ? frgd_mix : bkgd_mix)
				{
					case 0: src_dat = s3->accel.bkgd_color;		  break;
					case 1: src_dat = s3->accel.frgd_color;		  break;
					case 2: src_dat = cpu_dat;			      break;
					case 3: READ(s3->accel.src + s3->accel.cx, src_dat);
						if (vram_mask)
							src_dat = ((src_dat & rd_mask) == rd_mask);
						break;
				}

				if (((compare_mode == 2 && src_dat != compare) ||
				    (compare_mode == 3 && src_dat == compare) ||
				     compare_mode < 2))
				{
					READ(s3->accel.dest + s3->accel.dx, dest_dat);

					MIX

					if (s3->accel.cmd & 0x10) {
						WRITE(s3->accel.dest + s3->accel.dx, dest_dat);
					}
				}
			}

			mix_dat <<= 1;
			mix_dat |= 1;
			if (s3->bpp == 0) cpu_dat >>= 8;
			else	     cpu_dat >>= 16;

			if (s3->accel.cmd & 0x20)
			{
				s3->accel.cx = ((s3->accel.cx + 1) & 7) | (s3->accel.cx & ~7);
				s3->accel.dx++;
			}
			else
			{
				s3->accel.cx = ((s3->accel.cx - 1) & 7) | (s3->accel.cx & ~7);
				s3->accel.dx--;
			}
			s3->accel.sx--;
			if (s3->accel.sx < 0)
			{
				if (s3->accel.cmd & 0x20)
				{
					s3->accel.cx = ((s3->accel.cx - ((s3->accel.maj_axis_pcnt & 0xfff) + 1)) & 7) | (s3->accel.cx & ~7);
					s3->accel.dx -= (s3->accel.maj_axis_pcnt & 0xfff) + 1;
				}
				else
				{
					s3->accel.cx = ((s3->accel.cx + ((s3->accel.maj_axis_pcnt & 0xfff) + 1)) & 7) | (s3->accel.cx & ~7);
					s3->accel.dx += (s3->accel.maj_axis_pcnt & 0xfff) + 1;
				}
				s3->accel.sx    =  s3->accel.maj_axis_pcnt & 0xfff;

				if (s3->accel.cmd & 0x80)
				{
					s3->accel.cy = ((s3->accel.cy + 1) & 7) | (s3->accel.cy & ~7);
					s3->accel.dy++;
				}
				else
				{
					s3->accel.cy = ((s3->accel.cy - 1) & 7) | (s3->accel.cy & ~7);
					s3->accel.dy--;
				}

				s3->accel.src  = srcbase + s3->accel.pattern + (s3->accel.cy * s3->width);
				s3->accel.dest = dstbase + s3->accel.dy * s3->width;

				s3->accel.sy--;

				if (cpu_input) {
					return;
				}
				if (s3->accel.sy < 0) {
					return;
				}
			}
		}
		break;

		case 9: /*Polyline/2-Point Line (Vision868/968 and Trio64 only)*/
		{
			int error;

			if (s3->chip != S3_TRIO64 && s3->chip != S3_VISION968 && s3->chip != S3_VISION868)
				break;

			if (!cpu_input) {
				s3->accel.dx = ABS(s3->accel.destx_distp - s3->accel.cur_x);
				if (s3->accel.destx_distp & 0x1000)
					s3->accel.dx |= ~0xfff;
				s3->accel.dy = ABS(s3->accel.desty_axstp - s3->accel.cur_y);
				if (s3->accel.desty_axstp & 0x1000)
					s3->accel.dy |= ~0xfff;

				s3->accel.cx = s3->accel.cur_x;
				if (s3->accel.cur_x_bit12)
					s3->accel.cx |= ~0xfff;
				s3->accel.cy = s3->accel.cur_y;
				if (s3->accel.cur_y_bit12)
					s3->accel.cy |= ~0xfff;
			}

			if ((s3->accel.cmd & 0x100) && !cpu_input) return; /*Wait for data from CPU*/

			if (s3->accel.dx > s3->accel.dy) {
				error = s3->accel.dx / 2;
				while (s3->accel.cx != s3->accel.destx_distp && count--) {
					if ((s3->accel.cx & 0xfff) >= clip_l && (s3->accel.cx & 0xfff) <= clip_r &&
					    (s3->accel.cy & 0xfff) >= clip_t && (s3->accel.cy & 0xfff) <= clip_b)
					{
						src_dat = s3->accel.frgd_color;

						if (((compare_mode == 2 && src_dat != compare) ||
						    (compare_mode == 3 && src_dat == compare) ||
						     compare_mode < 2) && (s3->accel.cmd & 0x10))
						{
							READ((s3->accel.cy * s3->width) + s3->accel.cx, dest_dat);

							MIX

							if (s3->accel.cmd & 0x10) {
								WRITE((s3->accel.cy * s3->width) + s3->accel.cx, dest_dat);
							}
						}
					}

					error -= s3->accel.dy;
					if (error < 0) {
						error += s3->accel.dx;
						if (s3->accel.desty_axstp > s3->accel.cur_y)
							s3->accel.cy++;
						else
							s3->accel.cy--;
					}

					if (s3->accel.destx_distp > s3->accel.cur_x)
						s3->accel.cx++;
					else
						s3->accel.cx--;
				}
			} else {
				error = s3->accel.dy / 2;
				while (s3->accel.cy != s3->accel.desty_axstp && count--) {
					if ((s3->accel.cx & 0xfff) >= clip_l && (s3->accel.cx & 0xfff) <= clip_r &&
					    (s3->accel.cy & 0xfff) >= clip_t && (s3->accel.cy & 0xfff) <= clip_b)
					{
						src_dat = s3->accel.frgd_color;

						if (((compare_mode == 2 && src_dat != compare) ||
						    (compare_mode == 3 && src_dat == compare) ||
						     compare_mode < 2))
						{
							READ((s3->accel.cy * s3->width) + s3->accel.cx, dest_dat);

							MIX

							if (s3->accel.cmd & 0x10) {
								WRITE((s3->accel.cy * s3->width) + s3->accel.cx, dest_dat);
							}
						}
					}

					error -= s3->accel.dx;
					if (error < 0) {
						error += s3->accel.dy;
						if (s3->accel.destx_distp > s3->accel.cur_x)
							s3->accel.cx++;
						else
							s3->accel.cx--;
					}
					if (s3->accel.desty_axstp > s3->accel.cur_y)
						s3->accel.cy++;
					else
						s3->accel.cy--;

				}
			}
			s3->accel.cur_x = s3->accel.cx;
			s3->accel.cur_y = s3->accel.cy;
		}
		break;


		case 11: /*Polygon Fill Pattern (Vision868/968 and Trio64 only)*/
		{
			int end_y1, end_y2;

			if (s3->chip != S3_TRIO64 && s3->chip != S3_VISION968 && s3->chip != S3_VISION868)
				break;

			polygon_setup(s3);

			if ((s3->accel.cmd & 0x100) && !cpu_input) return; /*Wait for data from CPU*/

			end_y1 = s3->accel.desty_axstp;
			end_y2 = s3->accel.desty_axstp2;

			frgd_mix = (s3->accel.frgd_mix >> 5) & 3;
			bkgd_mix = (s3->accel.bkgd_mix >> 5) & 3;

			while ((s3->accel.poly_cy < end_y1) && (s3->accel.poly_cy2 < end_y2))
			{
				int y = s3->accel.poly_cy;
				int x_count = ABS((s3->accel.poly_cx2 >> 20) - s3->accel.poly_x) + 1;

				s3->accel.src  = srcbase + s3->accel.pattern + ((y & 7) * s3->width);
				s3->accel.dest = dstbase + y * s3->width;

				while (x_count-- && count--)
				{
					int pat_x = s3->accel.poly_x & 7;

					if ((s3->accel.poly_x & 0xfff) >= clip_l && (s3->accel.poly_x & 0xfff) <= clip_r &&
					    (s3->accel.poly_cy & 0xfff) >= clip_t && (s3->accel.poly_cy & 0xfff) <= clip_b)
					{
						if (vram_mask) {
							READ(s3->accel.src + pat_x, mix_dat);
							mix_dat = ((mix_dat & rd_mask) == rd_mask);
							mix_dat = mix_dat ? mix_mask : 0;
						}
						switch ((mix_dat & mix_mask) ? frgd_mix : bkgd_mix)
						{
							case 0: src_dat = s3->accel.bkgd_color; break;
							case 1: src_dat = s3->accel.frgd_color; break;
							case 2: src_dat = cpu_dat;	      break;
							case 3: READ(s3->accel.src + pat_x, src_dat);
								if (vram_mask)
									src_dat = ((src_dat & rd_mask) == rd_mask);
								break;
						}

						if (((compare_mode == 2 && src_dat != compare) ||
						    (compare_mode == 3 && src_dat == compare) ||
						     compare_mode < 2))
						{
							READ(s3->accel.dest + s3->accel.poly_x, dest_dat);

							MIX

							if (s3->accel.cmd & 0x10) {
								WRITE(s3->accel.dest + s3->accel.poly_x, dest_dat);
							}
						}
					}
					if (s3->bpp == 0) cpu_dat >>= 8;
					else	      cpu_dat >>= 16;

					mix_dat <<= 1;
					mix_dat |= 1;

					if (s3->accel.poly_x < (s3->accel.poly_cx2 >> 20))
						s3->accel.poly_x++;
					else
						s3->accel.poly_x--;
				}

				s3->accel.poly_cx += s3->accel.poly_dx1;
				s3->accel.poly_cx2 += s3->accel.poly_dx2;
				s3->accel.poly_x = s3->accel.poly_cx >> 20;

				s3->accel.poly_cy++;
				s3->accel.poly_cy2++;

				if (!count)
					break;
			}

			s3->accel.cur_x = s3->accel.poly_cx & 0xfff;
			s3->accel.cur_y = s3->accel.poly_cy & 0xfff;
			s3->accel.cur_x2 = s3->accel.poly_cx2 & 0xfff;
			s3->accel.cur_y2 = s3->accel.poly_cy & 0xfff;
		}
		break;

		case 14: /*ROPBlt (Vision868/968 only)*/
		if (s3->chip != S3_VISION968 && s3->chip != S3_VISION868)
			break;

		if (!cpu_input) /*!cpu_input is trigger to start operation*/
		{
			s3->accel.sx   = s3->accel.maj_axis_pcnt & 0xfff;
			s3->accel.sy   = s3->accel.multifunc[0]  & 0xfff;

			s3->accel.dx   = s3->accel.destx_distp & 0xfff;
			if (s3->accel.destx_distp & 0x1000) s3->accel.dx |= ~0xfff;
			s3->accel.dy   = s3->accel.desty_axstp & 0xfff;
			if (s3->accel.desty_axstp & 0x1000) s3->accel.dy |= ~0xfff;

			s3->accel.cx   = s3->accel.cur_x & 0xfff;
			if (s3->accel.cur_x_bit12) s3->accel.cx |= ~0xfff;
			s3->accel.cy   = s3->accel.cur_y & 0xfff;
			if (s3->accel.cur_y_bit12) s3->accel.cy |= ~0xfff;

			s3->accel.px   = s3->accel.pat_x & 0xfff;
			if (s3->accel.pat_x & 0x1000) s3->accel.px |= ~0xfff;
			s3->accel.py   = s3->accel.pat_y & 0xfff;
			if (s3->accel.pat_y & 0x1000) s3->accel.py |= ~0xfff;

			s3->accel.dest  = dstbase + (s3->accel.dy * s3->width);
			s3->accel.src  = srcbase + (s3->accel.cy * s3->width);
			s3->accel.pattern  = (s3->accel.py * s3->width);
		}

		if ((s3->accel.cmd & 0x100) && !cpu_input) return; /*Wait for data from CPU*/

		frgd_mix = (s3->accel.frgd_mix >> 5) & 3;
		bkgd_mix = (s3->accel.bkgd_mix >> 5) & 3;

		while (count-- && s3->accel.sy >= 0)
		{
			if ((s3->accel.dx & 0xfff) >= clip_l && (s3->accel.dx & 0xfff) <= clip_r &&
			    (s3->accel.dy & 0xfff) >= clip_t && (s3->accel.dy & 0xfff) <= clip_b)
			{
				switch ((mix_dat & mix_mask) ? frgd_mix : bkgd_mix)
				{
					case 0: src_dat = s3->accel.bkgd_color;		  break;
					case 1: src_dat = s3->accel.frgd_color;		  break;
					case 2: src_dat = cpu_dat;			      break;
					case 3: READ(s3->accel.src + s3->accel.cx, src_dat);  break;
				}

				if (s3->accel.ropmix & 0x100) {
					switch ((mix_dat & mix_mask) ? frgd_mix : bkgd_mix)
					{
						case 0: pat_dat = s3->accel.pat_bg_color;		  break;
						case 1: pat_dat = s3->accel.pat_fg_color;		  break;
						case 2: pat_dat = cpu_dat;			      break;
						case 3: READ(s3->accel.pattern + s3->accel.px, pat_dat);  break;
					}
				} else {
					switch ((mix_dat & mix_mask) ? frgd_mix : bkgd_mix)
					{
						case 0: pat_dat = s3->accel.bkgd_color;		  break;
						case 1: pat_dat = s3->accel.frgd_color;		  break;
						case 2: pat_dat = cpu_dat;			      break;
						case 3: READ(s3->accel.pattern + s3->accel.px, pat_dat);  break;
					}
				}

				if (((compare_mode == 2 && src_dat != compare) ||
					(compare_mode == 3 && src_dat == compare) ||
					compare_mode < 2))
				{
					READ(s3->accel.dest + s3->accel.dx, dest_dat);

					ROPMIX

					if (s3->accel.cmd & 0x10) {
						WRITE(s3->accel.dest + s3->accel.dx, out);
					}
				}
			}

			mix_dat <<= 1;
			mix_dat |= 1;
			if (s3->bpp == 0) cpu_dat >>= 8;
			else	     cpu_dat >>= 16;

			if (s3->accel.cmd & 0x20)
			{
				s3->accel.cx++;
				s3->accel.dx++;
				s3->accel.px++;
			}
			else
			{
				s3->accel.cx--;
				s3->accel.dx--;
				s3->accel.px--;
			}
			s3->accel.sx--;
			if (s3->accel.sx < 0)
			{
				if (s3->accel.cmd & 0x20)
				{
					s3->accel.cx -= (s3->accel.maj_axis_pcnt & 0xfff) + 1;
					s3->accel.dx -= (s3->accel.maj_axis_pcnt & 0xfff) + 1;
					s3->accel.px -= (s3->accel.maj_axis_pcnt & 0xfff) + 1;
				}
				else
				{
					s3->accel.cx += (s3->accel.maj_axis_pcnt & 0xfff) + 1;
					s3->accel.dx += (s3->accel.maj_axis_pcnt & 0xfff) + 1;
					s3->accel.px += (s3->accel.maj_axis_pcnt & 0xfff) + 1;
				}
				s3->accel.sx    =  s3->accel.maj_axis_pcnt & 0xfff;

				if (s3->accel.cmd & 0x80)
				{
					s3->accel.cy++;
					s3->accel.dy++;
					s3->accel.py++;
				}
				else
				{
					s3->accel.cy--;
					s3->accel.dy--;
					s3->accel.py--;
				}

				s3->accel.src  = srcbase + (s3->accel.cy * s3->width);
				s3->accel.dest = dstbase + (s3->accel.dy * s3->width);
				s3->accel.pattern  = (s3->accel.py * s3->width);

				s3->accel.sy--;

				if (cpu_input/* && (s3->accel.multifunc[0xa] & 0xc0) == 0x80*/) return;
				if (s3->accel.sy < 0) {
					return;
				}
			}
		}
		break;
	}
}

static uint8_t
s3_pci_read(int func, int addr, void *p)
{
	s3_t *s3 = (s3_t *)p;
	svga_t *svga = &s3->svga;

	switch (addr)
	{
		case 0x00: return 0x33; /*'S3'*/
		case 0x01: return 0x53;

		case 0x02: return s3->id_ext_pci;
		case 0x03: return (s3->chip == S3_TRIO64V2) ? 0x89 : 0x88;

		case PCI_REG_COMMAND:
		if (s3->chip == S3_VISION968 || s3->chip == S3_VISION868)
			return s3->pci_regs[PCI_REG_COMMAND] | 0x80; /*Respond to IO and memory accesses*/
		else
			return s3->pci_regs[PCI_REG_COMMAND]; /*Respond to IO and memory accesses*/
		break;

		case 0x07: return (s3->chip == S3_TRIO64V2) ? (s3->pci_regs[0x07] & 0x36) : (1 << 1); /*Medium DEVSEL timing*/

		case 0x08: return (s3->chip == S3_TRIO64V) ? 0x40 : 0; /*Revision ID*/
		case 0x09: return 0; /*Programming interface*/

		case 0x0a:
			if (s3->chip >= S3_TRIO32 || s3->chip == S3_VISION968 || s3->chip == S3_VISION868)
				return 0x00; /*Supports VGA interface*/
			else
				return 0x01;
			break;
		case 0x0b:
			if (s3->chip >= S3_TRIO32 || s3->chip == S3_VISION968 || s3->chip == S3_VISION868)
				return 0x03;
			else
				return 0x00;
			break;

		case 0x0d: return (s3->chip == S3_TRIO64V2) ? (s3->pci_regs[0x0d] & 0xf8) : 0x00; break;

		case 0x10: return 0x00; /*Linear frame buffer address*/
		case 0x11: return 0x00;
		case 0x12:
				if (svga->crtc[0x53] & 0x08)
					return 0x00;
				else
					return (svga->crtc[0x5a] & 0x80);
				break;

		case 0x13:
				if (svga->crtc[0x53] & 0x08) {
					return (s3->chip >= S3_TRIO64V) ? (svga->crtc[0x59] & 0xfc) : (svga->crtc[0x59] & 0xfe);
				} else {
					return svga->crtc[0x59];
				}
				break;

		case 0x30: return s3->has_bios ? (s3->pci_regs[0x30] & 0x01) : 0x00; /*BIOS ROM address*/
		case 0x31: return 0x00;
		case 0x32: return s3->has_bios ? s3->pci_regs[0x32] : 0x00;
		case 0x33: return s3->has_bios ? s3->pci_regs[0x33] : 0x00;

		case 0x3c: return s3->int_line;
		case 0x3d: return PCI_INTA;

		case 0x3e: return (s3->chip == S3_TRIO64V2) ? 0x04 : 0x00; break;
		case 0x3f: return (s3->chip == S3_TRIO64V2) ? 0xff : 0x00; break;
	}
	return 0;
}

static void
s3_pci_write(int func, int addr, uint8_t val, void *p)
{
	s3_t *s3 = (s3_t *)p;
	svga_t *svga = &s3->svga;

	switch (addr)
	{
		case 0x00: case 0x01: case 0x02: case 0x03:
		case 0x08: case 0x09: case 0x0a: case 0x0b:
		case 0x3d: case 0x3e: case 0x3f:
		if (s3->chip == S3_TRIO64V2)
			return;
		break;

		case PCI_REG_COMMAND:
		if (val & PCI_COMMAND_IO)
			s3_io_set(s3);
		else
			s3_io_remove(s3);
		s3->pci_regs[PCI_REG_COMMAND] = (val & 0x23);
		s3_updatemapping(s3);
		break;

		case 0x07:
		if (s3->chip == S3_TRIO64V2) {
			s3->pci_regs[0x07] = val & 0x3e;
			return;
		}
		break;

		case 0x0d:
		if (s3->chip == S3_TRIO64V2) {
			s3->pci_regs[0x0d] = val & 0xf8;
			return;
		}
		break;

		case 0x12:
		if (!(svga->crtc[0x53] & 0x08)) {
			svga->crtc[0x5a] = (svga->crtc[0x5a] & 0x7f) | (val & 0x80);
			s3_updatemapping(s3);
		}
		break;

		case 0x13:
		if (svga->crtc[0x53] & 0x08) {
			svga->crtc[0x59] = (s3->chip >= S3_TRIO64V) ? (val & 0xfc) : (val & 0xfe);
		} else {
			svga->crtc[0x59] = val;
		}
		s3_updatemapping(s3);
		break;

		case 0x30: case 0x32: case 0x33:
		if (!s3->has_bios)
			return;
		s3->pci_regs[addr] = val;
		if (s3->pci_regs[0x30] & 0x01)
		{
			uint32_t biosaddr = (s3->pci_regs[0x32] << 16) | (s3->pci_regs[0x33] << 24);
			mem_mapping_set_addr(&s3->bios_rom.mapping, biosaddr, 0x8000);
		}
		else
		{
			mem_mapping_disable(&s3->bios_rom.mapping);
		}
		return;

		case 0x3c:
		s3->int_line = val;
		return;
	}
}

static void
fifo_thread(void *param)
{
	s3_t *s3 = (s3_t *)param;
	uint64_t start_time, end_time;

	while (s3->fifo_thread_run) {
		thread_set_event(s3->fifo_not_full_event);
		thread_wait_event(s3->wake_fifo_thread, -1);
		thread_reset_event(s3->wake_fifo_thread);
		s3->blitter_busy = 1;
		while (!FIFO_EMPTY) {
			start_time = plat_timer_read();
			fifo_entry_t *fifo = &s3->fifo[s3->fifo_read_idx & FIFO_MASK];

			switch (fifo->addr_type & FIFO_TYPE) {
				case FIFO_WRITE_BYTE:
					s3_accel_write_fifo(s3, fifo->addr_type & FIFO_ADDR, fifo->val);
					break;
				case FIFO_WRITE_WORD:
					s3_accel_write_fifo_w(s3, fifo->addr_type & FIFO_ADDR, fifo->val);
					break;
				case FIFO_WRITE_DWORD:
					s3_accel_write_fifo_l(s3, fifo->addr_type & FIFO_ADDR, fifo->val);
					break;
				case FIFO_OUT_BYTE:
					s3_accel_out_fifo(s3, fifo->addr_type & FIFO_ADDR, fifo->val);
					break;
				case FIFO_OUT_WORD:
					s3_accel_out_fifo_w(s3, fifo->addr_type & FIFO_ADDR, fifo->val);
					break;
				case FIFO_OUT_DWORD:
					s3_accel_out_fifo_l(s3, fifo->addr_type & FIFO_ADDR, fifo->val);
					break;
			}

			s3->fifo_read_idx++;
			fifo->addr_type = FIFO_INVALID;

			if (FIFO_ENTRIES > 0xe000)
				thread_set_event(s3->fifo_not_full_event);

			end_time = plat_timer_read();
			s3->blitter_time += (end_time - start_time);
		}
		s3->blitter_busy = 0;
		s3->subsys_stat |= INT_FIFO_EMP;
		s3_update_irqs(s3);
	}
}

static int vram_sizes[] =
{
	7, /*512 kB*/
	6, /*1 MB*/
	4, /*2 MB*/
	0,
	0, /*4 MB*/
	0,
	0, /*6 MB*/
	0,
	3 /*8 MB*/
};

static void s3_reset(void *priv)
{
    s3_t *s3 = (s3_t *) priv;
    svga_t *svga = &s3->svga;

    memset(svga->crtc, 0x00, sizeof(svga->crtc));
    svga->crtc[0] = 63;
    svga->crtc[6] = 255;
    svga->dispontime = 1000ull << 32;
    svga->dispofftime = 1000ull << 32;
    svga->bpp = 8;

	if (s3->pci)
		svga->crtc[0x36] = 2 | (3 << 2) | (1 << 4);
	else if (s3->vlb)
		svga->crtc[0x36] = 1 | (3 << 2) | (1 << 4);
	else
		svga->crtc[0x36] = 3 | (1 << 4);

	if (s3->chip >= S3_86C928)
		svga->crtc[0x36] |= (vram_sizes[s3->vram] << 5);
	else
		svga->crtc[0x36] |= ((s3->vram == 1) ? 0x00 : 0x20) | 0x80;

	svga->crtc[0x37] = 1 | (7 << 5);

	if (s3->chip >= S3_86C928)
		svga->crtc[0x37] |= 0x04;

    s3_io_set(s3);

    memset(s3->pci_regs, 0x00, 256);

    s3->pci_regs[PCI_REG_COMMAND] = 7;

    s3->pci_regs[0x30] = 0x00;
    s3->pci_regs[0x32] = 0x0c;
    s3->pci_regs[0x33] = 0x00;

    switch(s3->card_type) {
		case S3_MIROCRYSTAL8S_805:
		case S3_MIROCRYSTAL10SD_805:
			svga->crtc[0x5a] = 0x0a;
			svga->getclock = sdac_getclock;
			break;

		case S3_SPEA_MIRAGE_86C801:
		case S3_SPEA_MIRAGE_86C805:
			svga->crtc[0x5a] = 0x0a;
			break;

		case S3_PHOENIX_86C801:
		case S3_PHOENIX_86C805:
			svga->crtc[0x5a] = 0x0a;
			break;

		case S3_METHEUS_86C928:
		case S3_SPEA_MERCURY_LITE_PCI:
			svga->crtc[0x5a] = 0x0a;
			break;

		case S3_PARADISE_BAHAMAS64:
		case S3_PHOENIX_VISION864:
		case S3_MIROCRYSTAL20SD_864:
			svga->crtc[0x5a] = 0x0a;
			break;

		case S3_DIAMOND_STEALTH64_964:
		case S3_ELSAWIN2KPROX_964:
		case S3_MIROCRYSTAL20SV_964:
			svga->crtc[0x5a] = 0x0a;
			break;

		case S3_ELSAWIN2KPROX:
		case S3_SPEA_MERCURY_P64V:
		case S3_MIROVIDEO40SV_ERGO_968:
		case S3_NUMBER9_9FX_771:
		case S3_PHOENIX_VISION968:
			if (s3->pci) {
				svga->crtc[0x53] = 0x18;
				svga->crtc[0x58] = 0x10;
				svga->crtc[0x59] = 0x70;
				svga->crtc[0x5a] = 0x00;
				svga->crtc[0x6c] = 1;
			} else {
				svga->crtc[0x53] = 0x00;
				svga->crtc[0x59] = 0x00;
				svga->crtc[0x5a] = 0x0a;
			}
			break;

		case S3_NUMBER9_9FX_531:
		case S3_PHOENIX_VISION868:
			if (s3->pci) {
				svga->crtc[0x53] = 0x18;
				svga->crtc[0x58] = 0x10;
				svga->crtc[0x59] = 0x70;
				svga->crtc[0x5a] = 0x00;
				svga->crtc[0x6c] = 1;
			} else {
				svga->crtc[0x53] = 0x00;
				svga->crtc[0x59] = 0x00;
				svga->crtc[0x5a] = 0x0a;
			}
			break;

		case S3_PHOENIX_TRIO64:
		case S3_PHOENIX_TRIO64_ONBOARD:
		case S3_PHOENIX_TRIO64VPLUS:
		case S3_PHOENIX_TRIO64VPLUS_ONBOARD:
		case S3_DIAMOND_STEALTH64_764:
		case S3_SPEA_MIRAGE_P64:
		case S3_NUMBER9_9FX:
			if (s3->card_type == S3_PHOENIX_TRIO64VPLUS || s3->card_type == S3_PHOENIX_TRIO64VPLUS_ONBOARD)
				svga->crtc[0x53] = 0x08;
			break;

		case S3_TRIO64V2_DX:
			svga->crtc[0x53] = 0x08;
			svga->crtc[0x59] = 0x70;
			svga->crtc[0x5a] = 0x00;
			svga->crtc[0x6c] = 1;
			s3->pci_regs[0x05] = 0;
			s3->pci_regs[0x06] = 0;
			s3->pci_regs[0x07] = 2;
			s3->pci_regs[0x3d] = 1;
			s3->pci_regs[0x3e] = 4;
			s3->pci_regs[0x3f] = 0xff;
			break;
	}

	if (s3->has_bios) {
		if (s3->pci)
			mem_mapping_disable(&s3->bios_rom.mapping);
	}

	s3_updatemapping(s3);

	mem_mapping_disable(&s3->mmio_mapping);
	mem_mapping_disable(&s3->new_mmio_mapping);
}


static void *s3_init(const device_t *info)
{
	const char *bios_fn;
	int chip, stepping;
	s3_t *s3 = malloc(sizeof(s3_t));
	svga_t *svga = &s3->svga;
	int vram;
	uint32_t vram_size;

	switch(info->local) {
		case S3_ORCHID_86C911:
			bios_fn = ROM_ORCHID_86C911;
			chip = S3_86C911;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_86c911);
			break;
		case S3_DIAMOND_STEALTH_VRAM:
			bios_fn = ROM_DIAMOND_STEALTH_VRAM;
			chip = S3_86C911;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_86c911);
			break;
		case S3_AMI_86C924:
			bios_fn = ROM_AMI_86C924;
			chip = S3_86C924;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_86c911);
			break;
		case S3_SPEA_MIRAGE_86C801:
			bios_fn = ROM_SPEA_MIRAGE_86C801;
			chip = S3_86C801;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_86c801);
			break;
		case S3_SPEA_MIRAGE_86C805:
			bios_fn = ROM_SPEA_MIRAGE_86C805;
			chip = S3_86C805;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_86c805);
			break;
		case S3_MIROCRYSTAL8S_805:
			bios_fn = ROM_MIROCRYSTAL8S_805;
			chip = S3_86C805;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_86c805);
			break;
		case S3_MIROCRYSTAL10SD_805:
			bios_fn = ROM_MIROCRYSTAL10SD_805;
			chip = S3_86C805;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_86c805);
			break;
		case S3_PHOENIX_86C801:
			bios_fn = ROM_PHOENIX_86C80X;
			chip = S3_86C801;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_86c801);
			break;
		case S3_PHOENIX_86C805:
			bios_fn = ROM_PHOENIX_86C80X;
			chip = S3_86C805;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_86c805);
			break;
		case S3_METHEUS_86C928:
			bios_fn = ROM_METHEUS_86C928;
			chip = S3_86C928;
			if (info->flags & DEVICE_VLB)
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_86c805);
			else
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_86c801);
			break;
		case S3_SPEA_MERCURY_LITE_PCI:
			bios_fn = ROM_SPEA_MERCURY_LITE_PCI;
			chip = S3_86C928PCI;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_86c928pci);
			break;
		case S3_MIROCRYSTAL20SD_864:
			bios_fn = ROM_MIROCRYSTAL20SD_864_VLB;
			chip = S3_VISION864;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision864_vlb);
			break;
		case S3_PARADISE_BAHAMAS64:
			bios_fn = ROM_PARADISE_BAHAMAS64;
			chip = S3_VISION864;
			if (info->flags & DEVICE_PCI)
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision864_pci);
			else
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision864_vlb);
			break;
		case S3_PHOENIX_VISION864:
			bios_fn = ROM_PHOENIX_VISION864;
			chip = S3_VISION864;
			if (info->flags & DEVICE_PCI)
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision864_pci);
			else
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision864_vlb);
			break;
		case S3_NUMBER9_9FX_531:
			bios_fn = ROM_NUMBER9_9FX_531;
			chip = S3_VISION868;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision868_pci);
			break;
		case S3_PHOENIX_VISION868:
			bios_fn = ROM_PHOENIX_VISION868;
			chip = S3_VISION868;
			if (info->flags & DEVICE_PCI)
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision868_pci);
			else
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision868_vlb);
			break;
		case S3_DIAMOND_STEALTH64_964:
			bios_fn = ROM_DIAMOND_STEALTH64_964;
			chip = S3_VISION964;
			if (info->flags & DEVICE_PCI)
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision964_pci);
			else
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision964_vlb);
			break;
		case S3_MIROCRYSTAL20SV_964:
			chip = S3_VISION964;
			if (info->flags & DEVICE_PCI) {
				bios_fn = ROM_MIROCRYSTAL20SV_964_PCI;
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision964_pci);
			} else {
				bios_fn = ROM_MIROCRYSTAL20SV_964_VLB;
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision964_vlb);
			}
			break;
		case S3_MIROVIDEO40SV_ERGO_968:
			bios_fn = ROM_MIROVIDEO40SV_ERGO_968_PCI;
			chip = S3_VISION968;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision968_pci);
			break;
		case S3_NUMBER9_9FX_771:
			bios_fn = ROM_NUMBER9_9FX_771;
			chip = S3_VISION968;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision968_pci);
			break;
		case S3_PHOENIX_VISION968:
			bios_fn = ROM_PHOENIX_VISION968;
			chip = S3_VISION968;
			if (info->flags & DEVICE_PCI)
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision968_pci);
			else
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision968_vlb);
			break;
		case S3_ELSAWIN2KPROX_964:
			bios_fn = ROM_ELSAWIN2KPROX_964;
			chip = S3_VISION964;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision964_pci);
			break;
		case S3_ELSAWIN2KPROX:
			bios_fn = ROM_ELSAWIN2KPROX;
			chip = S3_VISION968;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision968_pci);
			break;
		case S3_SPEA_MERCURY_P64V:
			bios_fn = ROM_SPEA_MERCURY_P64V;
			chip = S3_VISION968;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_vision968_pci);
			break;
		case S3_PHOENIX_TRIO32:
			bios_fn = ROM_PHOENIX_TRIO32;
			chip = S3_TRIO32;
			if (info->flags & DEVICE_PCI)
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_trio32_pci);
			else
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_trio32_vlb);
			break;
		case S3_DIAMOND_STEALTH_SE:
			bios_fn = ROM_DIAMOND_STEALTH_SE;
			chip = S3_TRIO32;
			if (info->flags & DEVICE_PCI)
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_trio32_pci);
			else
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_trio32_vlb);
			break;
		case S3_PHOENIX_TRIO64:
			bios_fn = ROM_PHOENIX_TRIO64;
			chip = S3_TRIO64;
			if (info->flags & DEVICE_PCI)
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_trio64_pci);
			else
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_trio64_vlb);
			break;
		case S3_SPEA_MIRAGE_P64:
			bios_fn = ROM_SPEA_MIRAGE_P64;
			chip = S3_TRIO64;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_trio64_vlb);
			break;
		case S3_PHOENIX_TRIO64_ONBOARD:
			bios_fn = NULL;
			chip = S3_TRIO64;
			if (info->flags & DEVICE_PCI)
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_trio64_pci);
			else
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_trio64_vlb);
			break;
		case S3_PHOENIX_TRIO64VPLUS:
			bios_fn = ROM_PHOENIX_TRIO64VPLUS;
			chip = S3_TRIO64V;
			if (info->flags & DEVICE_PCI)
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_trio64_pci);
			else
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_trio64_vlb);
			break;
		case S3_PHOENIX_TRIO64VPLUS_ONBOARD:
			bios_fn = NULL;
			chip = S3_TRIO64V;
			if (info->flags & DEVICE_PCI)
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_trio64_pci);
			else
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_trio64_vlb);
			break;
		case S3_DIAMOND_STEALTH64_764:
			bios_fn = ROM_DIAMOND_STEALTH64_764;
			chip = S3_TRIO64;
			if (info->flags & DEVICE_PCI)
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_stealth64_pci);
			else
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_stealth64_vlb);
			break;
		case S3_NUMBER9_9FX:
			bios_fn = ROM_NUMBER9_9FX;
			chip = S3_TRIO64;
			if (info->flags & DEVICE_PCI)
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_trio64_pci);
			else
				video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_trio64_vlb);
			break;
		case S3_TRIO64V2_DX:
			bios_fn = ROM_TRIO64V2_DX_VBE20;
			chip = S3_TRIO64V2;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_trio64_pci);
			break;
		case S3_TRIO64V2_DX_ONBOARD:
			bios_fn = NULL;
			chip = S3_TRIO64V2;
			video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_s3_trio64_pci);
			break;
		default:
			free(s3);
			return NULL;
	}

	memset(s3, 0, sizeof(s3_t));

	vram = device_get_config_int("memory");

	if (vram)
		vram_size = vram << 20;
	else
		vram_size = 512 << 10;
	s3->vram_mask = vram_size - 1;
	s3->vram = vram;

	s3->has_bios = (bios_fn != NULL);
	if (s3->has_bios) {
		rom_init(&s3->bios_rom, (char *) bios_fn, 0xc0000, 0x8000, 0x7fff, 0, MEM_MAPPING_EXTERNAL);
		if (info->flags & DEVICE_PCI)
			mem_mapping_disable(&s3->bios_rom.mapping);
	}

	s3->pci = !!(info->flags & DEVICE_PCI);
	s3->vlb = !!(info->flags & DEVICE_VLB);

	mem_mapping_add(&s3->linear_mapping,	0,			0,
			svga_read_linear,	svga_readw_linear,	svga_readl_linear,
			svga_write_linear,	svga_writew_linear,	svga_writel_linear,
			NULL,			MEM_MAPPING_EXTERNAL,	&s3->svga);
	/*It's hardcoded to 0xa0000 before the Trio64V+ and expects so*/
	if (chip >= S3_TRIO64V)
		mem_mapping_add(&s3->mmio_mapping,	0,			0,
				s3_accel_read,		s3_accel_read_w,	s3_accel_read_l,
				s3_accel_write,		s3_accel_write_w,	s3_accel_write_l,
				NULL,			MEM_MAPPING_EXTERNAL,	s3);
	else
		mem_mapping_add(&s3->mmio_mapping,	0xa0000,		0x10000,
				s3_accel_read,		s3_accel_read_w,	s3_accel_read_l,
				s3_accel_write,		s3_accel_write_w,	s3_accel_write_l,
				NULL,			MEM_MAPPING_EXTERNAL,	s3);
	mem_mapping_add(&s3->new_mmio_mapping,	0,			0,
			s3_accel_read,		s3_accel_read_w,	s3_accel_read_l,
			s3_accel_write,		s3_accel_write_w,	s3_accel_write_l,
			NULL,			MEM_MAPPING_EXTERNAL,	s3);
	mem_mapping_disable(&s3->mmio_mapping);
	mem_mapping_disable(&s3->new_mmio_mapping);

	if (chip == S3_VISION964 || chip == S3_VISION968)
		svga_init(info, &s3->svga, s3, vram_size,
		s3_recalctimings,
		s3_in, s3_out,
		NULL,
		NULL);
	else {
		if (chip >= S3_TRIO64V) {
			svga_init(info, svga, s3, vram_size,
			s3_trio64v_recalctimings,
			s3_in, s3_out,
			s3_hwcursor_draw,
			s3_trio64v_overlay_draw);
		} else {
			svga_init(info, svga, s3, vram_size,
			s3_recalctimings,
			s3_in, s3_out,
			s3_hwcursor_draw,
			NULL);
		}
	}

	svga->hwcursor.ysize = 64;

	if (chip == S3_VISION964 && info->local != S3_ELSAWIN2KPROX_964)
		svga->dac_hwcursor_draw = bt48x_hwcursor_draw;
	else if ((chip == S3_VISION964 && info->local == S3_ELSAWIN2KPROX_964) || (chip == S3_VISION968 && (info->local == S3_ELSAWIN2KPROX ||
			info->local == S3_PHOENIX_VISION968 || info->local == S3_NUMBER9_9FX_771)))
		svga->dac_hwcursor_draw = ibm_rgb528_hwcursor_draw;
	else if (chip == S3_VISION968 && (info->local == S3_SPEA_MERCURY_P64V || info->local == S3_MIROVIDEO40SV_ERGO_968))
		svga->dac_hwcursor_draw = tvp3026_hwcursor_draw;

	if (chip >= S3_VISION964) {
		switch (vram) {
			case 0:		/* 512 kB */
				svga->vram_mask = (1 << 19) - 1;
				svga->vram_max = 2 << 20;
				break;
			case 1:		/* 1 MB */
				/* VRAM in first MB, mirrored in 2nd MB, 3rd and 4th MBs are open bus.

				   This works with the #9 9FX BIOS, and matches how my real Trio64 behaves,
				   but does not work with the Phoenix EDO BIOS. Possibly an FPM/EDO difference? */
				svga->vram_mask = (1 << 20) - 1;
				svga->vram_max = 2 << 20;
				break;
			case 2:
			default:	/*2 MB */
				/* VRAM in first 2 MB, 3rd and 4th MBs are open bus. */
				svga->vram_mask = (2 << 20) - 1;
				svga->vram_max = 2 << 20;
				break;
			case 4: /*4MB*/
				svga->vram_mask = (4 << 20) - 1;
				svga->vram_max = 4 << 20;
				break;
			case 8: /*8MB*/
				svga->vram_mask = (8 << 20) - 1;
				svga->vram_max = 8 << 20;
				break;
		}
	}

	if (s3->pci)
		svga->crtc[0x36] = 2 | (3 << 2) | (1 << 4);
	else if (s3->vlb)
		svga->crtc[0x36] = 1 | (3 << 2) | (1 << 4);
	else
		svga->crtc[0x36] = 3 | (1 << 4);

	if (chip >= S3_86C928)
		svga->crtc[0x36] |= (vram_sizes[vram] << 5);
	else {
		svga->crtc[0x36] |= ((vram == 1) ? 0x00 : 0x20) | 0x98;
		svga->crtc[0x41] = (vram == 1) ? 0x10 : 0x00;
	}

	svga->crtc[0x37] = 1 | (7 << 5);

	if (chip >= S3_86C928)
		svga->crtc[0x37] |= 0x04;

	svga->vblank_start = s3_vblank_start;

	s3_io_set(s3);

	s3->pci_regs[PCI_REG_COMMAND] = 7;

	s3->pci_regs[0x30] = 0x00;
	s3->pci_regs[0x32] = 0x0c;
	s3->pci_regs[0x33] = 0x00;

	s3->chip = chip;

	s3->int_line = 0;

	s3->card_type = info->local;

	svga->force_old_addr = 1;

	switch(s3->card_type) {
		case S3_ORCHID_86C911:
		case S3_DIAMOND_STEALTH_VRAM:
			svga->decode_mask = (1 << 20) - 1;
			stepping = 0x81; /*86C911*/
			s3->id = stepping;
			s3->id_ext = stepping;
			s3->id_ext_pci = 0;
			s3->packed_mmio = 0;
			s3->width = 1024;

			svga->ramdac = device_add(&sc11483_ramdac_device);
			svga->clock_gen = device_add(&av9194_device);
			svga->getclock = av9194_getclock;
			break;

		case S3_AMI_86C924:
			svga->decode_mask = (1 << 20) - 1;
			stepping = 0x82; /*86C911A/86C924*/
			s3->id = stepping;
			s3->id_ext = stepping;
			s3->id_ext_pci = 0;
			s3->packed_mmio = 0;
			s3->width = 1024;

			svga->ramdac = device_add(&sc11487_ramdac_device);
			svga->clock_gen = device_add(&ics2494an_305_device);
			svga->getclock = ics2494_getclock;
			break;

		case S3_MIROCRYSTAL8S_805:
		case S3_MIROCRYSTAL10SD_805:
			svga->decode_mask = (2 << 20) - 1;
			stepping = 0xa0; /*86C801/86C805*/
			s3->id = stepping;
			s3->id_ext = stepping;
			s3->id_ext_pci = 0;
			s3->packed_mmio = 0;
			svga->crtc[0x5a] = 0x0a;

			svga->ramdac = device_add(&gendac_ramdac_device);
			svga->clock_gen = svga->ramdac;
			svga->getclock = sdac_getclock;
			break;

		case S3_SPEA_MIRAGE_86C801:
		case S3_SPEA_MIRAGE_86C805:
			svga->decode_mask = (2 << 20) - 1;
			stepping = 0xa0; /*86C801/86C805*/
			s3->id = stepping;
			s3->id_ext = stepping;
			s3->id_ext_pci = 0;
			s3->packed_mmio = 0;
			svga->crtc[0x5a] = 0x0a;

			svga->ramdac = device_add(&att490_ramdac_device);
			svga->clock_gen = device_add(&av9194_device);
			svga->getclock = av9194_getclock;
			break;

		case S3_PHOENIX_86C801:
		case S3_PHOENIX_86C805:
			svga->decode_mask = (2 << 20) - 1;
			stepping = 0xa0; /*86C801/86C805*/
			s3->id = stepping;
			s3->id_ext = stepping;
			s3->id_ext_pci = 0;
			s3->packed_mmio = 0;
			svga->crtc[0x5a] = 0x0a;

			svga->ramdac = device_add(&att492_ramdac_device);
			svga->clock_gen = device_add(&av9194_device);
			svga->getclock = av9194_getclock;
			break;

		case S3_METHEUS_86C928:
			svga->decode_mask = (4 << 20) - 1;
			stepping = 0x91; /*86C928*/
			s3->id = stepping;
			s3->id_ext = stepping;
			s3->id_ext_pci = 0;
			s3->packed_mmio = 0;
			svga->crtc[0x5a] = 0x0a;
			svga->ramdac = device_add(&bt485_ramdac_device);
			svga->clock_gen = device_add(&icd2061_device);
			svga->getclock = icd2061_getclock;
			break;

		case S3_SPEA_MERCURY_LITE_PCI:
			svga->decode_mask = (4 << 20) - 1;
			stepping = 0xb0; /*86C928PCI*/
			s3->id = stepping;
			s3->id_ext = stepping;
			s3->id_ext_pci = stepping;
			s3->packed_mmio = 0;
			svga->crtc[0x5a] = 0x0a;
			svga->ramdac = device_add(&sc1502x_ramdac_device);
			svga->clock_gen = device_add(&av9194_device);
			svga->getclock = av9194_getclock;
			break;

		case S3_PARADISE_BAHAMAS64:
		case S3_PHOENIX_VISION864:
		case S3_MIROCRYSTAL20SD_864: /*BIOS 3.xx has a SDAC ramdac.*/
			svga->decode_mask = (8 << 20) - 1;
			if (info->local == S3_PARADISE_BAHAMAS64 || info->local == S3_MIROCRYSTAL20SD_864)
				stepping = 0xc0; /*Vision864*/
			else
				stepping = 0xc1; /*Vision864P*/
			s3->id = stepping;
			s3->id_ext = s3->id_ext_pci = stepping;
			s3->packed_mmio = 0;
			svga->crtc[0x5a] = 0x0a;
			svga->ramdac = device_add(&sdac_ramdac_device);
			svga->clock_gen = svga->ramdac;
			svga->getclock = sdac_getclock;
			break;

		case S3_DIAMOND_STEALTH64_964:
		case S3_ELSAWIN2KPROX_964:
		case S3_MIROCRYSTAL20SV_964:
			svga->decode_mask = (8 << 20) - 1;
			stepping = 0xd0; /*Vision964*/
			s3->id = stepping;
			s3->id_ext = s3->id_ext_pci = stepping;
			s3->packed_mmio = 1;
			svga->crtc[0x5a] = 0x0a;

			if (info->local == S3_ELSAWIN2KPROX_964)
				svga->ramdac = device_add(&ibm_rgb528_ramdac_device);
			else
				svga->ramdac = device_add(&bt485_ramdac_device);

			svga->clock_gen = device_add(&icd2061_device);
			svga->getclock = icd2061_getclock;
			break;

		case S3_ELSAWIN2KPROX:
		case S3_SPEA_MERCURY_P64V:
		case S3_MIROVIDEO40SV_ERGO_968:
		case S3_NUMBER9_9FX_771:
		case S3_PHOENIX_VISION968:
			svga->decode_mask = (8 << 20) - 1;
			s3->id = 0xe1; /*Vision968*/
			s3->id_ext = s3->id_ext_pci = 0xf0;
			s3->packed_mmio = 1;
			if (s3->pci) {
				svga->crtc[0x53] = 0x18;
				svga->crtc[0x58] = 0x10;
				svga->crtc[0x59] = 0x70;
				svga->crtc[0x5a] = 0x00;
				svga->crtc[0x6c] = 1;
			} else {
				svga->crtc[0x53] = 0x00;
				svga->crtc[0x59] = 0x00;
				svga->crtc[0x5a] = 0x0a;
			}

			if (info->local == S3_ELSAWIN2KPROX || info->local == S3_PHOENIX_VISION968 ||
				info->local == S3_NUMBER9_9FX_771) {
				svga->ramdac = device_add(&ibm_rgb528_ramdac_device);
				svga->clock_gen = device_add(&icd2061_device);
				svga->getclock = icd2061_getclock;
			} else {
				svga->ramdac = device_add(&tvp3026_ramdac_device);
				svga->clock_gen = svga->ramdac;
				svga->getclock = tvp3026_getclock;
			}
			break;

		case S3_NUMBER9_9FX_531:
		case S3_PHOENIX_VISION868:
			svga->decode_mask = (8 << 20) - 1;
			s3->id = 0xe1; /*Vision868*/
			s3->id_ext = 0x90;
			s3->id_ext_pci = 0x80;
			s3->packed_mmio = 1;
			if (s3->pci) {
				svga->crtc[0x53] = 0x18;
				svga->crtc[0x58] = 0x10;
				svga->crtc[0x59] = 0x70;
				svga->crtc[0x5a] = 0x00;
				svga->crtc[0x6c] = 1;
			} else {
				svga->crtc[0x53] = 0x00;
				svga->crtc[0x59] = 0x00;
				svga->crtc[0x5a] = 0x0a;
			}

			if (info->local == S3_NUMBER9_9FX_531) {
				svga->ramdac = device_add(&att498_ramdac_device);
				svga->clock_gen = device_add(&icd2061_device);
				svga->getclock = icd2061_getclock;
			} else {
				svga->ramdac = device_add(&sdac_ramdac_device);
				svga->clock_gen = svga->ramdac;
				svga->getclock = sdac_getclock;
			}
			break;

		case S3_PHOENIX_TRIO32:
		case S3_DIAMOND_STEALTH_SE:
			svga->decode_mask = (4 << 20) - 1;
			s3->id = 0xe1; /*Trio32*/
			s3->id_ext = 0x10;
			s3->id_ext_pci = 0x11;
			s3->packed_mmio = 1;

			svga->clock_gen = s3;
			svga->getclock = s3_trio64_getclock;
			break;

		case S3_PHOENIX_TRIO64:
		case S3_PHOENIX_TRIO64_ONBOARD:
		case S3_PHOENIX_TRIO64VPLUS:
		case S3_PHOENIX_TRIO64VPLUS_ONBOARD:
		case S3_DIAMOND_STEALTH64_764:
		case S3_SPEA_MIRAGE_P64:
			if (device_get_config_int("memory") == 1)
				svga->vram_max = 1 << 20;	/* Phoenix BIOS does not expect VRAM to be mirrored. */
				/* Fall over. */

		case S3_NUMBER9_9FX:
			svga->decode_mask = (4 << 20) - 1;
			s3->id = 0xe1; /*Trio64*/
			s3->id_ext = s3->id_ext_pci = 0x11;
			s3->packed_mmio = 1;

			if (info->local == S3_PHOENIX_TRIO64VPLUS || info->local == S3_PHOENIX_TRIO64VPLUS_ONBOARD) {
				svga->crtc[0x53] = 0x08;
			}

			svga->clock_gen = s3;
			svga->getclock = s3_trio64_getclock;
			break;

		case S3_TRIO64V2_DX:
		case S3_TRIO64V2_DX_ONBOARD:
			svga->decode_mask = (4 << 20) - 1;
			s3->id = 0xe1; /*Trio64V2*/
			s3->id_ext = s3->id_ext_pci = 0x01;
			s3->packed_mmio = 1;
			svga->crtc[0x53] = 0x08;
			svga->crtc[0x59] = 0x70;
			svga->crtc[0x5a] = 0x00;
			svga->crtc[0x6c] = 1;
			s3->pci_regs[0x05] = 0;
			s3->pci_regs[0x06] = 0;
			s3->pci_regs[0x07] = 2;
			s3->pci_regs[0x3d] = 1;
			s3->pci_regs[0x3e] = 4;
			s3->pci_regs[0x3f] = 0xff;

			svga->clock_gen = s3;
			svga->getclock = s3_trio64_getclock;
			break;

		default:
			return NULL;
	}

	if (s3->pci)
		s3->card = pci_add_card(PCI_ADD_VIDEO, s3_pci_read, s3_pci_write, s3);

	s3->i2c = i2c_gpio_init("ddc_s3");
	s3->ddc = ddc_init(i2c_gpio_get_bus(s3->i2c));

	s3->wake_fifo_thread = thread_create_event();
	s3->fifo_not_full_event = thread_create_event();
	s3->fifo_thread_run = 1;
	s3->fifo_thread = thread_create(fifo_thread, s3);

	return s3;
}

static int s3_orchid_86c911_available(void)
{
	return rom_present(ROM_ORCHID_86C911);
}

static int s3_diamond_stealth_vram_available(void)
{
	return rom_present(ROM_DIAMOND_STEALTH_VRAM);
}

static int s3_ami_86c924_available(void)
{
	return rom_present(ROM_AMI_86C924);
}

static int s3_spea_mirage_86c801_available(void)
{
	return rom_present(ROM_SPEA_MIRAGE_86C801);
}

static int s3_spea_mirage_86c805_available(void)
{
	return rom_present(ROM_SPEA_MIRAGE_86C805);
}

static int s3_phoenix_86c80x_available(void)
{
	return rom_present(ROM_PHOENIX_86C80X);
}

static int s3_mirocrystal_8s_805_available(void)
{
	return rom_present(ROM_MIROCRYSTAL8S_805);
}

static int s3_mirocrystal_10sd_805_available(void)
{
	return rom_present(ROM_MIROCRYSTAL10SD_805);
}

static int s3_metheus_86c928_available(void)
{
	return rom_present(ROM_METHEUS_86C928);
}

static int s3_spea_mercury_lite_pci_available(void)
{
	return rom_present(ROM_SPEA_MERCURY_LITE_PCI);
}

static int s3_bahamas64_available(void)
{
	return rom_present(ROM_PARADISE_BAHAMAS64);
}

static int s3_phoenix_vision864_available(void)
{
	return rom_present(ROM_PHOENIX_VISION864);
}

static int s3_9fx_531_available(void)
{
	return rom_present(ROM_NUMBER9_9FX_531);
}

static int s3_phoenix_vision868_available(void)
{
	return rom_present(ROM_PHOENIX_VISION868);
}

static int s3_mirocrystal_20sv_964_vlb_available(void)
{
	return rom_present(ROM_MIROCRYSTAL20SV_964_VLB);
}

static int s3_mirocrystal_20sv_964_pci_available(void)
{
	return rom_present(ROM_MIROCRYSTAL20SV_964_PCI);
}

static int s3_diamond_stealth64_964_available(void)
{
	return rom_present(ROM_DIAMOND_STEALTH64_964);
}

static int s3_mirovideo_40sv_ergo_968_pci_available(void)
{
	return rom_present(ROM_MIROVIDEO40SV_ERGO_968_PCI);
}

static int s3_9fx_771_available(void)
{
	return rom_present(ROM_NUMBER9_9FX_771);
}

static int s3_phoenix_vision968_available(void)
{
	return rom_present(ROM_PHOENIX_VISION968);
}

static int s3_mirocrystal_20sd_864_vlb_available(void)
{
	return rom_present(ROM_MIROCRYSTAL20SD_864_VLB);
}

static int s3_spea_mercury_p64v_pci_available(void)
{
	return rom_present(ROM_SPEA_MERCURY_P64V);
}

static int s3_elsa_winner2000_pro_x_964_available(void)
{
	return rom_present(ROM_ELSAWIN2KPROX_964);
}

static int s3_elsa_winner2000_pro_x_available(void)
{
	return rom_present(ROM_ELSAWIN2KPROX);
}

static int s3_phoenix_trio32_available(void)
{
	return rom_present(ROM_PHOENIX_TRIO32);
}

static int s3_diamond_stealth_se_available(void)
{
	return rom_present(ROM_DIAMOND_STEALTH_SE);
}

static int s3_9fx_available(void)
{
	return rom_present(ROM_NUMBER9_9FX);
}

static int s3_spea_mirage_p64_vlb_available(void)
{
	return rom_present(ROM_SPEA_MIRAGE_P64);
}

static int s3_phoenix_trio64_available(void)
{
	return rom_present(ROM_PHOENIX_TRIO64);
}

static int s3_phoenix_trio64vplus_available(void)
{
	return rom_present(ROM_PHOENIX_TRIO64VPLUS);
}

static int s3_diamond_stealth64_764_available(void)
{
	return rom_present(ROM_DIAMOND_STEALTH64_764);
}

static int s3_trio64v2_dx_available(void)
{
	return rom_present(ROM_TRIO64V2_DX_VBE20);
}

static void s3_close(void *p)
{
	s3_t *s3 = (s3_t *)p;

	s3->fifo_thread_run = 0;
	thread_set_event(s3->wake_fifo_thread);
	thread_wait(s3->fifo_thread);
	thread_destroy_event(s3->fifo_not_full_event);
	thread_destroy_event(s3->wake_fifo_thread);

	svga_close(&s3->svga);

	ddc_close(s3->ddc);
	i2c_gpio_close(s3->i2c);

	free(s3);
}

static void s3_speed_changed(void *p)
{
	s3_t *s3 = (s3_t *)p;

	svga_recalctimings(&s3->svga);
}

static void s3_force_redraw(void *p)
{
	s3_t *s3 = (s3_t *)p;

	s3->svga.fullchange = changeframecount;
}

static const device_config_t s3_orchid_86c911_config[] = {
    {
        "memory", "Memory size", CONFIG_SELECTION, "", 1, "", { 0 },
        {
            { "512 KB", 0 },
            { "1 MB",   1 },
            { ""          }
        }
    },
    { "", "", -1 }
};

static const device_config_t s3_9fx_config[] = {
    {
        "memory", "Memory size", CONFIG_SELECTION, "", 2, "", { 0 },
        {
            { "1 MB", 1 },
            { "2 MB", 2 },
            /*Trio64 also supports 4 MB, however the Number Nine BIOS does not*/
            { "" }
        }
    },
    { "", "", -1 }
};

static const device_config_t s3_phoenix_trio32_config[] = {
    {
        "memory", "Memory size", CONFIG_SELECTION, "", 2, "", { 0 },
        {
            { "512 KB", 0 },
            { "1 MB",   1 },
            { "2 MB",   2 },
            { ""          }
        }
    },
    { "", "", -1 }
};

static const device_config_t s3_standard_config[] = {
    {
        "memory", "Memory size", CONFIG_SELECTION, "", 4, "", { 0 },
        {
            { "1 MB", 1 },
            { "2 MB", 2 },
            { "4 MB", 4 },
            { ""        }
        }
    },
    { "", "", -1 }
};

static const device_config_t s3_968_config[] = {
    {
        "memory", "Memory size", CONFIG_SELECTION, "", 4, "", { 0 },
        {
            { "1 MB", 1 },
            { "2 MB", 2 },
            { "4 MB", 4 },
            { "8 MB", 8 },
            { ""        }
        }
    },
    { "", "", -1 }
};

const device_t s3_orchid_86c911_isa_device = {
    .name = "S3 86c911 ISA (Orchid Fahrenheit 1280)",
    .internal_name = "orchid_s3_911",
    .flags = DEVICE_AT | DEVICE_ISA,
    .local = S3_ORCHID_86C911,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_orchid_86c911_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_orchid_86c911_config
};

const device_t s3_diamond_stealth_vram_isa_device = {
    .name = "S3 86c911 ISA (Diamond Stealth VRAM)",
    .internal_name = "stealthvram_isa",
    .flags = DEVICE_AT | DEVICE_ISA,
    .local = S3_DIAMOND_STEALTH_VRAM,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_diamond_stealth_vram_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_orchid_86c911_config
};

const device_t s3_ami_86c924_isa_device = {
    .name = "S3 86c924 ISA (AMI)",
    .internal_name = "ami_s3_924",
    .flags = DEVICE_AT | DEVICE_ISA,
    .local = S3_AMI_86C924,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_ami_86c924_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_orchid_86c911_config
};

const device_t s3_spea_mirage_86c801_isa_device = {
    .name = "S3 86c801 ISA (SPEA Mirage ISA)",
    .internal_name = "px_s3_v7_801_isa",
    .flags = DEVICE_AT | DEVICE_ISA,
    .local = S3_SPEA_MIRAGE_86C801,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_spea_mirage_86c801_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_9fx_config
};

const device_t s3_spea_mirage_86c805_vlb_device = {
    .name = "S3 86c805 VLB (SPEA Mirage VL)",
    .internal_name = "px_s3_v7_805_vlb",
    .flags = DEVICE_VLB,
    .local = S3_SPEA_MIRAGE_86C805,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_spea_mirage_86c805_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_9fx_config
};

const device_t s3_mirocrystal_8s_805_vlb_device = {
    .name = "S3 86c805 VLB (MiroCRYSTAL 8S)",
    .internal_name = "mirocrystal8s_vlb",
    .flags = DEVICE_VLB,
    .local = S3_MIROCRYSTAL8S_805,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_mirocrystal_8s_805_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_9fx_config
};

const device_t s3_mirocrystal_10sd_805_vlb_device = {
    .name = "S3 86c805 VLB (MiroCRYSTAL 10SD)",
    .internal_name = "mirocrystal10sd_vlb",
    .flags = DEVICE_VLB,
    .local = S3_MIROCRYSTAL10SD_805,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_mirocrystal_10sd_805_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_9fx_config
};

const device_t s3_phoenix_86c801_isa_device = {
    .name = "S3 86c801 ISA (Phoenix)",
    .internal_name = "px_86c801_isa",
    .flags = DEVICE_AT | DEVICE_ISA,
    .local = S3_PHOENIX_86C801,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_phoenix_86c80x_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_9fx_config
};

const device_t s3_phoenix_86c805_vlb_device = {
    .name = "S3 86c805 VLB (Phoenix)",
    .internal_name = "px_86c805_vlb",
    .flags = DEVICE_VLB,
    .local = S3_PHOENIX_86C805,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_phoenix_86c80x_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_9fx_config
};

const device_t s3_metheus_86c928_isa_device = {
    .name = "S3 86c928 ISA (Metheus Premier 928)",
    .internal_name = "metheus928_isa",
    .flags = DEVICE_AT | DEVICE_ISA,
    .local = S3_METHEUS_86C928,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_metheus_86c928_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_metheus_86c928_vlb_device = {
    .name = "S3 86c928 VLB (Metheus Premier 928)",
    .internal_name = "metheus928_vlb",
    .flags = DEVICE_VLB,
    .local = S3_METHEUS_86C928,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_metheus_86c928_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_spea_mercury_lite_86c928_pci_device = {
    .name = "S3 86c928 PCI (SPEA Mercury Lite)",
    .internal_name = "spea_mercurylite_pci",
    .flags = DEVICE_PCI,
    .local = S3_SPEA_MERCURY_LITE_PCI,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_spea_mercury_lite_pci_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_mirocrystal_20sd_864_vlb_device = {
    .name = "S3 Vision864 VLB (MiroCRYSTAL 20SD)",
    .internal_name = "mirocrystal20sd_vlb",
    .flags = DEVICE_VLB,
    .local = S3_MIROCRYSTAL20SD_864,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_mirocrystal_20sd_864_vlb_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_9fx_config
};

const device_t s3_bahamas64_vlb_device = {
    .name = "S3 Vision864 VLB (Paradise Bahamas 64)",
    .internal_name = "bahamas64_vlb",
    .flags = DEVICE_VLB,
    .local = S3_PARADISE_BAHAMAS64,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_bahamas64_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_9fx_config
};

const device_t s3_bahamas64_pci_device = {
    .name = "S3 Vision864 PCI (Paradise Bahamas 64)",
    .internal_name = "bahamas64_pci",
    .flags = DEVICE_PCI,
    .local = S3_PARADISE_BAHAMAS64,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_bahamas64_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_9fx_config
};

const device_t s3_mirocrystal_20sv_964_vlb_device = {
    .name = "S3 Vision964 VLB (MiroCRYSTAL 20SV)",
    .internal_name = "mirocrystal20sv_vlb",
    .flags = DEVICE_VLB,
    .local = S3_MIROCRYSTAL20SV_964,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_mirocrystal_20sv_964_vlb_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_9fx_config
};

const device_t s3_mirocrystal_20sv_964_pci_device = {
    .name = "S3 Vision964 PCI (MiroCRYSTAL 20SV)",
    .internal_name = "mirocrystal20sv_pci",
    .flags = DEVICE_PCI,
    .local = S3_MIROCRYSTAL20SV_964,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_mirocrystal_20sv_964_pci_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_9fx_config
};

const device_t s3_diamond_stealth64_964_vlb_device = {
    .name = "S3 Vision964 VLB (Diamond Stealth64 VRAM)",
    .internal_name = "stealth64v_vlb",
    .flags = DEVICE_VLB,
    .local = S3_DIAMOND_STEALTH64_964,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_diamond_stealth64_964_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_diamond_stealth64_964_pci_device = {
    .name = "S3 Vision964 PCI (Diamond Stealth64 VRAM)",
    .internal_name = "stealth64v_pci",
    .flags = DEVICE_PCI,
    .local = S3_DIAMOND_STEALTH64_964,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_diamond_stealth64_964_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_9fx_771_pci_device = {
    .name = "S3 Vision968 PCI (Number 9 9FX 771)",
    .internal_name = "n9_9fx_771_pci",
    .flags = DEVICE_PCI,
    .local = S3_NUMBER9_9FX_771,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_9fx_771_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_phoenix_vision968_pci_device = {
    .name = "S3 Vision968 PCI (Phoenix)",
    .internal_name = "px_vision968_pci",
    .flags = DEVICE_PCI,
    .local = S3_PHOENIX_VISION968,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_phoenix_vision968_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_phoenix_vision968_vlb_device = {
    .name = "S3 Vision968 VLB (Phoenix)",
    .internal_name = "px_vision968_vlb",
    .flags = DEVICE_VLB,
    .local = S3_PHOENIX_VISION968,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_phoenix_vision968_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_mirovideo_40sv_ergo_968_pci_device = {
    .name = "S3 Vision968 PCI (MiroVIDEO 40SV Ergo)",
    .internal_name = "mirovideo40sv_pci",
    .flags = DEVICE_PCI,
    .local = S3_MIROVIDEO40SV_ERGO_968,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_mirovideo_40sv_ergo_968_pci_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_spea_mercury_p64v_pci_device = {
    .name = "S3 Vision968 PCI (SPEA Mercury P64V)",
    .internal_name = "spea_mercury64p_pci",
    .flags = DEVICE_PCI,
    .local = S3_SPEA_MERCURY_P64V,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_spea_mercury_p64v_pci_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_9fx_vlb_device = {
    .name = "S3 Trio64 VLB (Number 9 9FX 330)",
    .internal_name = "n9_9fx_vlb",
    .flags = DEVICE_VLB,
    .local = S3_NUMBER9_9FX,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_9fx_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_9fx_config
};

const device_t s3_9fx_pci_device = {
    .name = "S3 Trio64 PCI (Number 9 9FX 330)",
    .internal_name = "n9_9fx_pci",
    .flags = DEVICE_PCI,
    .local = S3_NUMBER9_9FX,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_9fx_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_9fx_config
};

const device_t s3_phoenix_trio32_vlb_device = {
    .name = "S3 Trio32 VLB (Phoenix)",
    .internal_name = "px_trio32_vlb",
    .flags = DEVICE_VLB,
    .local = S3_PHOENIX_TRIO32,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_phoenix_trio32_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_phoenix_trio32_config
};

const device_t s3_phoenix_trio32_pci_device = {
    .name = "S3 Trio32 PCI (Phoenix)",
    .internal_name = "px_trio32_pci",
    .flags = DEVICE_PCI,
    .local = S3_PHOENIX_TRIO32,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_phoenix_trio32_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_phoenix_trio32_config
};

const device_t s3_diamond_stealth_se_vlb_device = {
    .name = "S3 Trio32 VLB (Diamond Stealth SE)",
    .internal_name = "stealthse_vlb",
    .flags = DEVICE_VLB,
    .local = S3_DIAMOND_STEALTH_SE,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_diamond_stealth_se_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_phoenix_trio32_config
};

const device_t s3_diamond_stealth_se_pci_device = {
    .name = "S3 Trio32 PCI (Diamond Stealth SE)",
    .internal_name = "stealthse_pci",
    .flags = DEVICE_PCI,
    .local = S3_DIAMOND_STEALTH_SE,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_diamond_stealth_se_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_phoenix_trio32_config
};

const device_t s3_phoenix_trio64_vlb_device = {
    .name = "S3 Trio64 VLB (Phoenix)",
    .internal_name = "px_trio64_vlb",
    .flags = DEVICE_VLB,
    .local = S3_PHOENIX_TRIO64,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_phoenix_trio64_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_phoenix_trio64_onboard_pci_device = {
    .name = "S3 Trio64 PCI On-Board (Phoenix)",
    .internal_name = "px_trio64_onboard_pci",
    .flags = DEVICE_PCI,
    .local = S3_PHOENIX_TRIO64_ONBOARD,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = NULL },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_phoenix_trio64_pci_device = {
    .name = "S3 Trio64 PCI (Phoenix)",
    .internal_name = "px_trio64_pci",
    .flags = DEVICE_PCI,
    .local = S3_PHOENIX_TRIO64,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_phoenix_trio64_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_phoenix_trio64vplus_onboard_pci_device = {
    .name = "S3 Trio64V+ PCI On-Board (Phoenix)",
    .internal_name = "px_trio64vplus_onboard_pci",
    .flags = DEVICE_PCI,
    .local = S3_PHOENIX_TRIO64VPLUS_ONBOARD,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = NULL },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_phoenix_trio64vplus_pci_device = {
    .name = "S3 Trio64V+ PCI (Phoenix)",
    .internal_name = "px_trio64vplus_pci",
    .flags = DEVICE_PCI,
    .local = S3_PHOENIX_TRIO64VPLUS,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_phoenix_trio64vplus_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_phoenix_vision864_vlb_device = {
    .name = "S3 Vision864 VLB (Phoenix)",
    .internal_name = "px_vision864_vlb",
    .flags = DEVICE_VLB,
    .local = S3_PHOENIX_VISION864,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_phoenix_vision864_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_phoenix_vision864_pci_device = {
    .name = "S3 Vision864 PCI (Phoenix)",
    .internal_name = "px_vision864_pci",
    .flags = DEVICE_PCI,
    .local = S3_PHOENIX_VISION864,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_phoenix_vision864_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_9fx_531_pci_device = {
    .name = "S3 Vision868 PCI (Number 9 9FX 531)",
    .internal_name = "n9_9fx_531_pci",
    .flags = DEVICE_PCI,
    .local = S3_NUMBER9_9FX_531,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_9fx_531_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_9fx_config
};

const device_t s3_phoenix_vision868_vlb_device = {
    .name = "S3 Vision868 VLB (Phoenix)",
    .internal_name = "px_vision868_vlb",
    .flags = DEVICE_VLB,
    .local = S3_PHOENIX_VISION868,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_phoenix_vision868_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_phoenix_vision868_pci_device = {
    .name = "S3 Vision868 PCI (Phoenix)",
    .internal_name = "px_vision868_pci",
    .flags = DEVICE_PCI,
    .local = S3_PHOENIX_VISION868,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_phoenix_vision868_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_diamond_stealth64_vlb_device = {
    .name = "S3 Trio64 VLB (Diamond Stealth64 DRAM)",
    .internal_name = "stealth64d_vlb",
    .flags = DEVICE_VLB,
    .local = S3_DIAMOND_STEALTH64_764,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_diamond_stealth64_764_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_9fx_config
};

const device_t s3_diamond_stealth64_pci_device = {
    .name = "S3 Trio64 PCI (Diamond Stealth64 DRAM)",
    .internal_name = "stealth64d_pci",
    .flags = DEVICE_PCI,
    .local = S3_DIAMOND_STEALTH64_764,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_diamond_stealth64_764_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_9fx_config
};

const device_t s3_spea_mirage_p64_vlb_device = {
    .name = "S3 Trio64 VLB (SPEA Mirage P64)",
    .internal_name = "spea_miragep64_vlb",
    .flags = DEVICE_VLB,
    .local = S3_SPEA_MIRAGE_P64,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_spea_mirage_p64_vlb_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_9fx_config
};

const device_t s3_elsa_winner2000_pro_x_964_pci_device = {
    .name = "S3 Vision964 PCI (ELSA Winner 2000 Pro/X)",
    .internal_name = "elsawin2kprox_964_pci",
    .flags = DEVICE_PCI,
    .local = S3_ELSAWIN2KPROX_964,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_elsa_winner2000_pro_x_964_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_968_config
};

const device_t s3_elsa_winner2000_pro_x_pci_device = {
    .name = "S3 Vision968 PCI (ELSA Winner 2000 Pro/X)",
    .internal_name = "elsawin2kprox_pci",
    .flags = DEVICE_PCI,
    .local = S3_ELSAWIN2KPROX,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_elsa_winner2000_pro_x_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_968_config
};

const device_t s3_trio64v2_dx_pci_device = {
    .name = "S3 Trio64V2/DX PCI",
    .internal_name = "trio64v2dx_pci",
    .flags = DEVICE_PCI,
    .local = S3_TRIO64V2_DX,
    .init = s3_init,
    .close = s3_close,
    .reset = s3_reset,
    { .available = s3_trio64v2_dx_available },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};

const device_t s3_trio64v2_dx_onboard_pci_device = {
    .name = "S3 Trio64V2/DX On-Board PCI",
    .internal_name = "trio64v2dx_onboard_pci",
    .flags = DEVICE_PCI,
    .local = S3_TRIO64V2_DX_ONBOARD,
    .init = s3_init,
    .close = s3_close,
    .reset = NULL,
    { .available = NULL },
    .speed_changed = s3_speed_changed,
    .force_redraw = s3_force_redraw,
    .config = s3_standard_config
};