d17d13e3b8
1. Cleanups and moving the mach8/32 struct to a dedicated header so that would allow for future 8514/A add-on clones (in paper). 2. Mach8/32's port 0x4ae8/9 and shadow set ports (0x5aee and 0x46ee) now account to the mode changes seriously, should fix most of the horizontal/vertical coordinates while entering GUI modes of various stuff. 3. Horizontal/Vertical window coordinates can only be modified if the display enable bit of port 0x22e8 is set as well as bit 0 of port 0x4aee, fixes most problems noted above. 4. Implemented horizontal blanking stuff a la VGA but actually for 8514/A and clones (like ATI). 5. Added some comments regarding the current situation. 6. The Mach8 was actually a 8514/A clone co-processor, not a single solution card of its own. The ATI Graphics Ultra was a single solution card that is actually a Mach8 + ATI 28800-6 in one, so renaming it accordingly. 7. Fixed garbled/distorted acceleration when device bitmap acceleration is enabled in the ATI Mach8 3.0 Win3.1 drivers.
218 lines
4.9 KiB
C
218 lines
4.9 KiB
C
/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box distribution.
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*
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* Emulation of the 8514/A card from IBM for the MCA bus and
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* generic ISA bus clones without vendor extensions.
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*
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*
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*
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* Authors: TheCollector1995
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*
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* Copyright 2022 TheCollector1995.
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*/
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#ifndef VIDEO_8514A_H
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#define VIDEO_8514A_H
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typedef struct hwcursor8514_t {
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int ena;
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int x;
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int y;
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int xoff;
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int yoff;
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int cur_xsize;
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int cur_ysize;
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int v_acc;
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int h_acc;
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uint32_t addr;
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uint32_t pitch;
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} hwcursor8514_t;
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typedef struct ibm8514_t {
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rom_t bios_rom;
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rom_t bios_rom2;
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hwcursor8514_t hwcursor;
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hwcursor8514_t hwcursor_latch;
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uint8_t pos_regs[8];
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int force_old_addr;
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int type;
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int local;
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int bpp;
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int on[2];
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int accel_bpp;
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uint32_t vram_size;
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uint32_t vram_mask;
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uint32_t pallook[512];
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PALETTE vgapal;
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uint8_t hwcursor_oddeven;
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uint8_t dac_mask;
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uint8_t dac_status;
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uint32_t *map8;
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int dac_addr;
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int dac_pos;
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int dac_r;
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int dac_g;
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int dac_b;
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int internal_pitch;
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int hwcursor_on;
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int modechange;
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struct {
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uint16_t subsys_cntl;
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uint16_t setup_md;
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uint16_t advfunc_cntl;
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uint16_t cur_y;
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uint16_t cur_x;
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int16_t destx;
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int16_t desty;
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int16_t desty_axstp;
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int16_t destx_distp;
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int16_t err_term;
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int16_t maj_axis_pcnt;
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int16_t maj_axis_pcnt_no_limit;
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uint16_t cmd;
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uint16_t cmd_back;
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uint16_t short_stroke;
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uint16_t bkgd_color;
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uint16_t frgd_color;
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uint16_t wrt_mask;
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uint16_t rd_mask;
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uint16_t color_cmp;
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uint16_t bkgd_mix;
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uint16_t frgd_mix;
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uint16_t multifunc_cntl;
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uint16_t multifunc[16];
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int16_t clip_left;
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int16_t clip_top;
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uint8_t pix_trans[2];
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int poly_draw;
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int ssv_state;
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int x1;
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int x2;
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int x3;
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int y1;
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int y2;
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int sys_cnt;
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int sys_cnt2;
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int temp_cnt;
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int16_t cx;
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int16_t cx_back;
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int16_t cy;
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int16_t oldcx;
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int16_t oldcy;
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int16_t sx;
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int16_t sy;
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int16_t dx;
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int16_t dy;
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int16_t err;
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uint32_t src;
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uint32_t dest;
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uint32_t newsrc_blt;
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uint32_t newdest_blt;
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uint32_t newdest_in;
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uint32_t newdest_out;
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uint8_t *writemono;
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uint8_t *nibbleset;
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int x_count;
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int xx_count;
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int y_count;
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int input;
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int output;
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uint16_t cur_x_bit12;
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uint16_t cur_y_bit12;
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int ssv_len;
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uint8_t ssv_dir;
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uint8_t ssv_draw;
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int odd_in;
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int odd_out;
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uint16_t scratch;
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int fill_state;
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int xdir;
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int ydir;
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int linedraw;
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uint32_t ge_offset;
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} accel;
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uint16_t test;
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int vendor_mode[2];
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int h_blankstart;
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int h_blank_end_val;
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int hblankstart;
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int hblank_end_val;
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int hblankend;
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int hblank_ext;
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int hblank_sub;
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int v_total;
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int dispend;
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int v_syncstart;
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int split;
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int h_disp;
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int h_total;
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int h_sync_width;
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int h_disp_time;
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int rowoffset;
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int dispon;
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int hdisp_on;
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int linecountff;
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int vc;
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int linepos;
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int oddeven;
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int cursoron;
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int blink;
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int scrollcache;
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int firstline;
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int lastline;
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int firstline_draw;
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int lastline_draw;
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int displine;
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int fullchange;
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uint32_t ma;
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uint32_t maback;
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uint8_t *vram;
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uint8_t *changedvram;
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uint8_t linedbl;
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uint8_t data_available;
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uint8_t data_available2;
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uint8_t rowcount;
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int hsync_start;
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int hsync_width;
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int htotal;
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int hdisp;
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int hdisped;
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int sc;
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int vsyncstart;
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int vsyncwidth;
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int vtotal;
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int v_disp;
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int vdisp;
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int disp_cntl;
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int interlace;
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uint8_t subsys_cntl;
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uint8_t subsys_stat;
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atomic_int force_busy;
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atomic_int force_busy2;
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int blitter_busy;
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uint64_t blitter_time;
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uint64_t status_time;
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int pitch;
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int ext_pitch;
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int ext_crt_pitch;
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int extensions;
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} ibm8514_t;
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#endif /*VIDEO_8514A_H*/
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