728 lines
21 KiB
C
728 lines
21 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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* ATI 28800 emulation (VGA Charger and Korean VGA)
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*
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* Version: @(#)vid_ati28800.c 1.0.26 2018/10/18
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*
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* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
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* Miran Grca, <mgrca8@gmail.com>
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* greatpsycho,
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*
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* Copyright 2008-2018 Sarah Walker.
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* Copyright 2016-2018 Miran Grca.
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* Copyright 2018 greatpsycho.
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*/
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#include <stdarg.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <wchar.h>
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#define HAVE_STDARG_H
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#include "../86box.h"
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#include "../io.h"
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#include "../mem.h"
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#include "../rom.h"
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#include "../device.h"
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#include "video.h"
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#include "vid_ati28800.h"
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#include "vid_ati_eeprom.h"
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#include "vid_svga.h"
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#include "vid_svga_render.h"
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#include "vid_sc1502x_ramdac.h"
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#define VGAWONDERXL 1
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#if defined(DEV_BRANCH) && defined(USE_XL24)
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#define VGAWONDERXL24 2
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#endif
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#define BIOS_ATIKOR_PATH L"roms/video/ati28800/atikorvga.bin"
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#define FONT_ATIKOR_PATH L"roms/video/ati28800/ati_ksc5601.rom"
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#define BIOS_VGAXL_EVEN_PATH L"roms/video/ati28800/xleven.bin"
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#define BIOS_VGAXL_ODD_PATH L"roms/video/ati28800/xlodd.bin"
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#if defined(DEV_BRANCH) && defined(USE_XL24)
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#define BIOS_XL24_EVEN_PATH L"roms/video/ati28800/112-14318-102.bin"
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#define BIOS_XL24_ODD_PATH L"roms/video/ati28800/112-14319-102.bin"
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#endif
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#define BIOS_ROM_PATH L"roms/video/ati28800/bios.bin"
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typedef struct ati28800_t
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{
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svga_t svga;
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ati_eeprom_t eeprom;
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rom_t bios_rom;
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uint8_t regs[256];
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int index;
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uint32_t memory;
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uint8_t id;
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uint8_t port_03dd_val;
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uint16_t get_korean_font_kind;
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int in_get_korean_font_kind_set;
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int get_korean_font_enabled;
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int get_korean_font_index;
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uint16_t get_korean_font_base;
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int ksc5601_mode_enabled;
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} ati28800_t;
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static video_timings_t timing_ati28800 = {VIDEO_ISA, 3, 3, 6, 5, 5, 10};
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#ifdef ENABLE_ATI28800_LOG
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int ati28800_do_log = ENABLE_ATI28800_LOG;
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static void
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ati28800_log(const char *fmt, ...)
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{
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va_list ap;
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if (ati28800_do_log) {
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va_start(ap, fmt);
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pclog_ex(fmt, ap);
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va_end(ap);
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}
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}
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#else
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#define ati28800_log(fmt, ...)
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#endif
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static void ati28800_recalctimings(svga_t *svga);
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static void ati28800_out(uint16_t addr, uint8_t val, void *p)
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{
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ati28800_t *ati28800 = (ati28800_t *)p;
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svga_t *svga = &ati28800->svga;
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uint8_t old;
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ati28800_log("ati28800_out : %04X %02X\n", addr, val);
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if (((addr&0xFFF0) == 0x3D0 || (addr&0xFFF0) == 0x3B0) && !(svga->miscout&1))
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addr ^= 0x60;
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switch (addr)
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{
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case 0x1ce:
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ati28800->index = val;
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break;
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case 0x1cf:
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old=ati28800->regs[ati28800->index];
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ati28800->regs[ati28800->index] = val;
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pclog("ATI write reg=%02x\n", ati28800->index);
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switch (ati28800->index)
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{
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case 0xb2:
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case 0xbe:
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case 0xbd:
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if (ati28800->regs[0xbe] & 8) /*Read/write bank mode*/
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{
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if (ati28800->regs[0xbd] & 4)
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{
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svga->read_bank = (((ati28800->regs[0xb2] >> 5) & 7) * 0x20000);
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svga->write_bank = (((ati28800->regs[0xb2] >> 1) & 7) * 0x20000);
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}
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else
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{
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svga->read_bank = (((ati28800->regs[0xb2] >> 5) & 7) * 0x10000);
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svga->write_bank = (((ati28800->regs[0xb2] >> 1) & 7) * 0x10000);
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}
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}
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else /*Single bank mode*/
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{
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if (ati28800->regs[0xbd] & 4)
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{
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svga->read_bank = (((ati28800->regs[0xb2] >> 1) & 7) * 0x20000);
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svga->write_bank = (((ati28800->regs[0xb2] >> 1) & 7) * 0x20000);
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}
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else
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{
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svga->read_bank = (((ati28800->regs[0xb2] >> 1) & 7) * 0x10000);
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svga->write_bank = (((ati28800->regs[0xb2] >> 1) & 7) * 0x10000);
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}
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}
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break;
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case 0xb3:
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ati_eeprom_write(&ati28800->eeprom, val & 8, val & 2, val & 1);
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break;
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case 0xb6:
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if((old ^ val) & 0x10) svga_recalctimings(svga);
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break;
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case 0xb8:
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if((old ^ val) & 0x40) svga_recalctimings(svga);
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break;
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case 0xb9:
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if((old ^ val) & 2) svga_recalctimings(svga);
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break;
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}
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break;
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case 0x3C6: case 0x3C7: case 0x3C8: case 0x3C9:
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sc1502x_ramdac_out(addr, val, svga->ramdac, svga);
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return;
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case 0x3D4:
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svga->crtcreg = val & 0x3f;
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return;
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case 0x3D5:
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if ((svga->crtcreg < 7) && (svga->crtc[0x11] & 0x80))
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return;
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if ((svga->crtcreg == 7) && (svga->crtc[0x11] & 0x80))
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val = (svga->crtc[7] & ~0x10) | (val & 0x10);
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old = svga->crtc[svga->crtcreg];
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svga->crtc[svga->crtcreg] = val;
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if (old != val)
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{
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if (svga->crtcreg < 0xe || svga->crtcreg > 0x10)
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{
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svga->fullchange = changeframecount;
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svga_recalctimings(svga);
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}
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}
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break;
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}
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svga_out(addr, val, svga);
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}
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void ati28800k_out(uint16_t addr, uint8_t val, void *p)
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{
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ati28800_t *ati28800 = (ati28800_t *)p;
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svga_t *svga = &ati28800->svga;
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uint16_t oldaddr = addr;
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if (((addr&0xFFF0) == 0x3D0 || (addr&0xFFF0) == 0x3B0) && !(svga->miscout&1))
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addr ^= 0x60;
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switch (addr)
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{
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case 0x1CF:
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if(ati28800->index == 0xBF && ((ati28800->regs[0xBF] ^ val) & 0x20))
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{
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ati28800->ksc5601_mode_enabled = val & 0x20;
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svga_recalctimings(svga);
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}
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ati28800_out(oldaddr, val, p);
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break;
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case 0x3DD:
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ati28800->port_03dd_val = val;
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if(val == 1) ati28800->get_korean_font_enabled = 0;
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if(ati28800->in_get_korean_font_kind_set)
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{
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ati28800->get_korean_font_kind = (val << 8) | (ati28800->get_korean_font_kind & 0xFF);
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ati28800->get_korean_font_enabled = 1;
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ati28800->get_korean_font_index = 0;
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ati28800->in_get_korean_font_kind_set = 0;
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}
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break;
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case 0x3DE:
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ati28800->in_get_korean_font_kind_set = 0;
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if(ati28800->get_korean_font_enabled)
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{
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if((ati28800->get_korean_font_base & 0x7F) > 0x20 && (ati28800->get_korean_font_base & 0x7F) < 0x7F)
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fontdatksc5601_user[(ati28800->get_korean_font_kind & 4) * 24 + (ati28800->get_korean_font_base & 0x7F) - 0x20].chr[ati28800->get_korean_font_index] = val;
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ati28800->get_korean_font_index++;
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ati28800->get_korean_font_index &= 0x1F;
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}
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else
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{
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switch(ati28800->port_03dd_val)
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{
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case 0x10:
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ati28800->get_korean_font_base = ((val & 0x7F) << 7) | (ati28800->get_korean_font_base & 0x7F);
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break;
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case 8:
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ati28800->get_korean_font_base = (ati28800->get_korean_font_base & 0x3F80) | (val & 0x7F);
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break;
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case 1:
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ati28800->get_korean_font_kind = (ati28800->get_korean_font_kind & 0xFF00) | val;
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if(val & 2)
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ati28800->in_get_korean_font_kind_set = 1;
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break;
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}
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break;
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}
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default:
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ati28800_out(oldaddr, val, p);
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break;
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}
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}
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static uint8_t ati28800_in(uint16_t addr, void *p)
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{
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ati28800_t *ati28800 = (ati28800_t *)p;
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svga_t *svga = &ati28800->svga;
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uint8_t temp;
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if (addr != 0x3da) ati28800_log("ati28800_in : %04X ", addr);
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if (((addr&0xFFF0) == 0x3D0 || (addr&0xFFF0) == 0x3B0) && !(svga->miscout&1)) addr ^= 0x60;
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switch (addr)
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{
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case 0x1ce:
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temp = ati28800->index;
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break;
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case 0x1cf:
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switch (ati28800->index)
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{
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case 0xaa:
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temp = ati28800->id;
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break;
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case 0xb0:
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if (ati28800->memory == 1024)
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temp = 0x08;
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else if (ati28800->memory == 512)
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temp = 0x10;
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else
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temp = 0x00;
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ati28800->regs[0xb0] |= temp;
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break;
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case 0xb7:
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temp = ati28800->regs[ati28800->index] & ~8;
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if (ati_eeprom_read(&ati28800->eeprom))
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temp |= 8;
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break;
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default:
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temp = ati28800->regs[ati28800->index];
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break;
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}
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break;
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case 0x3c2:
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if ((svga->vgapal[0].r + svga->vgapal[0].g + svga->vgapal[0].b) >= 0x50)
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temp = 0;
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else
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temp = 0x10;
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break;
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case 0x3C6: case 0x3C7: case 0x3C8: case 0x3C9:
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return sc1502x_ramdac_in(addr, svga->ramdac, svga);
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case 0x3D4:
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temp = svga->crtcreg;
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break;
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case 0x3D5:
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temp = svga->crtc[svga->crtcreg];
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break;
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default:
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temp = svga_in(addr, svga);
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break;
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}
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if (addr != 0x3da) ati28800_log("%02X\n", temp);
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return temp;
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}
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uint8_t ati28800k_in(uint16_t addr, void *p)
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{
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ati28800_t *ati28800 = (ati28800_t *)p;
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svga_t *svga = &ati28800->svga;
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uint16_t oldaddr = addr;
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uint8_t temp = 0xFF;
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if (addr != 0x3da) ati28800_log("ati28800k_in : %04X ", addr);
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if (((addr&0xFFF0) == 0x3D0 || (addr&0xFFF0) == 0x3B0) && !(svga->miscout&1)) addr ^= 0x60;
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switch (addr)
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{
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case 0x3DE:
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if (ati28800->get_korean_font_enabled)
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{
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switch(ati28800->get_korean_font_kind >> 8)
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{
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case 4: /* ROM font */
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temp = fontdatksc5601[ati28800->get_korean_font_base].chr[ati28800->get_korean_font_index++];
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break;
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case 2: /* User defined font */
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if((ati28800->get_korean_font_base & 0x7F) > 0x20 && (ati28800->get_korean_font_base & 0x7F) < 0x7F)
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temp = fontdatksc5601_user[(ati28800->get_korean_font_kind & 4) * 24 + (ati28800->get_korean_font_base & 0x7F) - 0x20].chr[ati28800->get_korean_font_index];
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else
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temp = 0xFF;
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ati28800->get_korean_font_index++;
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break;
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default:
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break;
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}
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ati28800->get_korean_font_index &= 0x1F;
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}
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break;
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default:
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temp = ati28800_in(oldaddr, p);
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break;
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}
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if (addr != 0x3da) ati28800_log("%02X\n", temp);
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return temp;
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}
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static void ati28800_recalctimings(svga_t *svga)
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{
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ati28800_t *ati28800 = (ati28800_t *)svga->p;
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switch(((ati28800->regs[0xbe] & 0x10) >> 1) | ((ati28800->regs[0xb9] & 2) << 1) | ((svga->miscout & 0x0C) >> 2))
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{
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case 0x00: svga->clock = cpuclock / 42954000.0; break;
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case 0x01: svga->clock = cpuclock / 48771000.0; break;
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case 0x03: svga->clock = cpuclock / 36000000.0; break;
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case 0x04: svga->clock = cpuclock / 50350000.0; break;
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case 0x05: svga->clock = cpuclock / 56640000.0; break;
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case 0x07: svga->clock = cpuclock / 44900000.0; break;
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case 0x08: svga->clock = cpuclock / 30240000.0; break;
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case 0x09: svga->clock = cpuclock / 32000000.0; break;
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case 0x0A: svga->clock = cpuclock / 37500000.0; break;
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case 0x0B: svga->clock = cpuclock / 39000000.0; break;
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case 0x0C: svga->clock = cpuclock / 40000000.0; break;
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case 0x0D: svga->clock = cpuclock / 56644000.0; break;
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case 0x0E: svga->clock = cpuclock / 75000000.0; break;
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case 0x0F: svga->clock = cpuclock / 65000000.0; break;
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default: break;
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}
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if(ati28800->regs[0xb8] & 0x40) svga->clock *= 2;
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if (ati28800->regs[0xb6] & 0x10)
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{
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svga->hdisp <<= 1;
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svga->htotal <<= 1;
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svga->rowoffset <<= 1;
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}
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if(svga->crtc[0x17] & 4)
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{
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svga->vtotal <<= 1;
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svga->dispend <<= 1;
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svga->vsyncstart <<= 1;
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svga->split <<= 1;
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svga->vblankstart <<= 1;
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}
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if (!svga->scrblank && (ati28800->regs[0xb0] & 0x20)) /*Extended 256 colour modes*/
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{
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switch (svga->bpp)
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{
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case 8:
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svga->render = svga_render_8bpp_highres;
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svga->rowoffset <<= 1;
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svga->ma <<= 1;
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break;
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case 15:
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svga->render = svga_render_15bpp_highres;
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svga->hdisp >>= 1;
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svga->rowoffset <<= 1;
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svga->ma <<= 1;
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break;
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}
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}
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}
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void ati28800k_recalctimings(svga_t *svga)
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{
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ati28800_t *ati28800 = (ati28800_t *) svga->p;
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ati28800_recalctimings(svga);
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if (svga->render == svga_render_text_80 && ati28800->ksc5601_mode_enabled)
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{
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svga->render = svga_render_text_80_ksc5601;
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}
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}
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void *
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ati28800k_init(const device_t *info)
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{
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ati28800_t *ati28800 = malloc(sizeof(ati28800_t));
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memset(ati28800, 0, sizeof(ati28800_t));
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video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_ati28800);
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ati28800->memory = device_get_config_int("memory");
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ati28800->port_03dd_val = 0;
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ati28800->get_korean_font_base = 0;
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ati28800->get_korean_font_index = 0;
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ati28800->get_korean_font_enabled = 0;
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ati28800->get_korean_font_kind = 0;
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ati28800->in_get_korean_font_kind_set = 0;
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ati28800->ksc5601_mode_enabled = 0;
|
|
|
|
rom_init(&ati28800->bios_rom, BIOS_ATIKOR_PATH, 0xc0000, 0x8000, 0x7fff, 0, MEM_MAPPING_EXTERNAL);
|
|
loadfont(FONT_ATIKOR_PATH, 6);
|
|
|
|
svga_init(&ati28800->svga, ati28800, ati28800->memory << 10, /*Memory size, default 512KB*/
|
|
ati28800k_recalctimings,
|
|
ati28800k_in, ati28800k_out,
|
|
NULL,
|
|
NULL);
|
|
|
|
ati28800->svga.ramdac = device_add(&sc1502x_ramdac_device);
|
|
|
|
io_sethandler(0x01ce, 0x0002, ati28800k_in, NULL, NULL, ati28800k_out, NULL, NULL, ati28800);
|
|
io_sethandler(0x03c0, 0x0020, ati28800k_in, NULL, NULL, ati28800k_out, NULL, NULL, ati28800);
|
|
|
|
ati28800->svga.miscout = 1;
|
|
ati28800->svga.ksc5601_sbyte_mask = 0;
|
|
|
|
ati_eeprom_load(&ati28800->eeprom, L"atikorvga.nvr", 0);
|
|
|
|
return ati28800;
|
|
}
|
|
|
|
static void *
|
|
ati28800_init(const device_t *info)
|
|
{
|
|
ati28800_t *ati28800;
|
|
ati28800 = malloc(sizeof(ati28800_t));
|
|
memset(ati28800, 0x00, sizeof(ati28800_t));
|
|
|
|
video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_ati28800);
|
|
|
|
ati28800->memory = device_get_config_int("memory");
|
|
|
|
switch(info->local) {
|
|
case VGAWONDERXL:
|
|
ati28800->id = 6;
|
|
rom_init_interleaved(&ati28800->bios_rom,
|
|
BIOS_VGAXL_EVEN_PATH,
|
|
BIOS_VGAXL_ODD_PATH,
|
|
0xc0000, 0x10000, 0xffff,
|
|
0, MEM_MAPPING_EXTERNAL);
|
|
break;
|
|
|
|
#if defined(DEV_BRANCH) && defined(USE_XL24)
|
|
case VGAWONDERXL24:
|
|
ati28800->id = 6;
|
|
rom_init_interleaved(&ati28800->bios_rom,
|
|
BIOS_XL24_EVEN_PATH,
|
|
BIOS_XL24_ODD_PATH,
|
|
0xc0000, 0x10000, 0xffff,
|
|
0, MEM_MAPPING_EXTERNAL);
|
|
break;
|
|
#endif
|
|
|
|
default:
|
|
ati28800->id = 5;
|
|
rom_init(&ati28800->bios_rom,
|
|
BIOS_ROM_PATH,
|
|
0xc0000, 0x8000, 0x7fff,
|
|
0, MEM_MAPPING_EXTERNAL);
|
|
break;
|
|
}
|
|
|
|
svga_init(&ati28800->svga, ati28800, ati28800->memory << 10, /*default: 512kb*/
|
|
ati28800_recalctimings,
|
|
ati28800_in, ati28800_out,
|
|
NULL,
|
|
NULL);
|
|
|
|
ati28800->svga.ramdac = device_add(&sc1502x_ramdac_device);
|
|
|
|
io_sethandler(0x01ce, 2,
|
|
ati28800_in, NULL, NULL,
|
|
ati28800_out, NULL, NULL, ati28800);
|
|
io_sethandler(0x03c0, 32,
|
|
ati28800_in, NULL, NULL,
|
|
ati28800_out, NULL, NULL, ati28800);
|
|
|
|
ati28800->svga.miscout = 1;
|
|
|
|
switch (info->local)
|
|
{
|
|
case VGAWONDERXL:
|
|
ati_eeprom_load(&ati28800->eeprom, L"ati28800xl.nvr", 0);
|
|
break;
|
|
|
|
#if defined(DEV_BRANCH) && defined(USE_XL24)
|
|
case VGAWONDERXL24:
|
|
ati_eeprom_load(&ati28800->eeprom, L"ati28800xl24.nvr", 0);
|
|
break;
|
|
#endif
|
|
|
|
default:
|
|
ati_eeprom_load(&ati28800->eeprom, L"ati28800.nvr", 0);
|
|
break;
|
|
}
|
|
|
|
|
|
return(ati28800);
|
|
}
|
|
|
|
|
|
static int
|
|
ati28800_available(void)
|
|
{
|
|
return(rom_present(BIOS_ROM_PATH));
|
|
}
|
|
|
|
|
|
static int
|
|
ati28800k_available()
|
|
{
|
|
return ((rom_present(BIOS_ATIKOR_PATH) && rom_present(FONT_ATIKOR_PATH)));
|
|
}
|
|
|
|
|
|
static int
|
|
compaq_ati28800_available(void)
|
|
{
|
|
return((rom_present(BIOS_VGAXL_EVEN_PATH) && rom_present(BIOS_VGAXL_ODD_PATH)));
|
|
}
|
|
|
|
|
|
#if defined(DEV_BRANCH) && defined(USE_XL24)
|
|
static int
|
|
ati28800_wonderxl24_available(void)
|
|
{
|
|
return((rom_present(BIOS_XL24_EVEN_PATH) && rom_present(BIOS_XL24_ODD_PATH)));
|
|
}
|
|
#endif
|
|
|
|
|
|
static void
|
|
ati28800_close(void *priv)
|
|
{
|
|
ati28800_t *ati28800 = (ati28800_t *)priv;
|
|
|
|
svga_close(&ati28800->svga);
|
|
|
|
free(ati28800);
|
|
}
|
|
|
|
|
|
static void
|
|
ati28800_speed_changed(void *p)
|
|
{
|
|
ati28800_t *ati28800 = (ati28800_t *)p;
|
|
|
|
svga_recalctimings(&ati28800->svga);
|
|
}
|
|
|
|
|
|
static void
|
|
ati28800_force_redraw(void *priv)
|
|
{
|
|
ati28800_t *ati28800 = (ati28800_t *)priv;
|
|
|
|
ati28800->svga.fullchange = changeframecount;
|
|
}
|
|
|
|
|
|
static const device_config_t ati28800_config[] =
|
|
{
|
|
{
|
|
"memory", "Memory size", CONFIG_SELECTION, "", 512,
|
|
{
|
|
{
|
|
"256 kB", 256
|
|
},
|
|
{
|
|
"512 kB", 512
|
|
},
|
|
{
|
|
"1 MB", 1024
|
|
},
|
|
{
|
|
""
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"", "", -1
|
|
}
|
|
};
|
|
|
|
#if defined(DEV_BRANCH) && defined(USE_XL24)
|
|
static const device_config_t ati28800_wonderxl_config[] =
|
|
{
|
|
{
|
|
"memory", "Memory size", CONFIG_SELECTION, "", 512,
|
|
{
|
|
{
|
|
"256 kB", 256
|
|
},
|
|
{
|
|
"512 kB", 512
|
|
},
|
|
{
|
|
"1 MB", 1024
|
|
},
|
|
{
|
|
""
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"", "", -1
|
|
}
|
|
};
|
|
#endif
|
|
|
|
const device_t ati28800_device =
|
|
{
|
|
"ATI-28800",
|
|
DEVICE_ISA,
|
|
0,
|
|
ati28800_init, ati28800_close, NULL,
|
|
ati28800_available,
|
|
ati28800_speed_changed,
|
|
ati28800_force_redraw,
|
|
ati28800_config
|
|
};
|
|
|
|
const device_t ati28800k_device =
|
|
{
|
|
"ATI Korean VGA",
|
|
DEVICE_ISA,
|
|
0,
|
|
ati28800k_init, ati28800_close, NULL,
|
|
ati28800k_available,
|
|
ati28800_speed_changed,
|
|
ati28800_force_redraw,
|
|
ati28800_config
|
|
};
|
|
|
|
const device_t compaq_ati28800_device =
|
|
{
|
|
"Compaq ATI-28800",
|
|
DEVICE_ISA,
|
|
VGAWONDERXL,
|
|
ati28800_init, ati28800_close, NULL,
|
|
compaq_ati28800_available,
|
|
ati28800_speed_changed,
|
|
ati28800_force_redraw,
|
|
ati28800_config
|
|
};
|
|
|
|
#if defined(DEV_BRANCH) && defined(USE_XL24)
|
|
const device_t ati28800_wonderxl24_device =
|
|
{
|
|
"ATI-28800 (VGA Wonder XL24)",
|
|
DEVICE_ISA,
|
|
VGAWONDERXL24,
|
|
ati28800_init, ati28800_close, NULL,
|
|
ati28800_wonderxl24_available,
|
|
ati28800_speed_changed,
|
|
ati28800_force_redraw,
|
|
ati28800_wonderxl_config
|
|
};
|
|
#endif
|