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Implemented preliminary S3 ViRGE 2D blitter emulation.

Browse source 
Misc ViRGE fixes.
Changes to memory mapping.
Changes to PCI handling.
Disabled 'AMI WinBIOS 486 PCI' due to incomplete chipset emulation.
Invalid GUS register reads no longer kill the emulator.
This commit is contained in:
TomW 2014-03-20 14:03:55 +00:00
commit 2ca4ead570
49 changed files with 2078 additions and 700 deletions
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19
src/vid_tvga.c
View file

@ -4,6 +4,7 @@
#include "device.h"
#include "io.h"
#include "mem.h"
#include "rom.h"
#include "video.h"
#include "vid_svga.h"
#include "vid_svga_render.h"
@ -17,6 +18,8 @@ typedef struct tvga_t
svga_t svga;
tkd8001_ramdac_t ramdac;
rom_t bios_rom;
uint8_t tvga_3d8, tvga_3d9;
int oldmode;
@ -48,7 +51,10 @@ void tvga_out(uint16_t addr, uint8_t val, void *p)
break;
case 0xd:
if (tvga->oldmode)
tvga->oldctrl2 = val;
{
tvga->oldctrl2 = val;
svga->vrammask = (val & 0x10) ? 0xfffff : 0x3ffff;
}
else
tvga->newctrl2 = val;
break;
@ -92,7 +98,7 @@ void tvga_out(uint16_t addr, uint8_t val, void *p)
if (svga->crtcreg <= 7 && svga->crtc[0x11] & 0x80) return;
old = svga->crtc[svga->crtcreg];
svga->crtc[svga->crtcreg] = val;
// if (svga->crtcreg != 0xE && svga->crtcreg != 0xF) pclog("CRTC R%02X = %02X\n", svga->crtcreg, val);
// if (svga->crtcreg != 0xC && svga->crtcreg != 0xE && svga->crtcreg != 0xF) pclog("CRTC R%02X = %02X %04X:%04X\n", svga->crtcreg, val, CS, pc);
if (old != val)
{
if (svga->crtcreg < 0xE || svga->crtcreg > 0x10)
@ -240,6 +246,8 @@ void *tvga8900d_init()
{
tvga_t *tvga = malloc(sizeof(tvga_t));
memset(tvga, 0, sizeof(tvga_t));
rom_init(&tvga->bios_rom, "roms/trident.bin", 0xc0000, 0x8000, 0x7fff, 0, 0);
svga_init(&tvga->svga, tvga, 1 << 20, /*1mb - chip supports 2mb, but drivers are buggy*/
tvga_recalctimings,
@ -251,6 +259,11 @@ void *tvga8900d_init()
return tvga;
}
static int tvga8900d_available()
{
return rom_present("roms/trident.bin");
}
void tvga_close(void *p)
{
tvga_t *tvga = (tvga_t *)p;
@ -287,7 +300,7 @@ device_t tvga8900d_device =
0,
tvga8900d_init,
tvga_close,
NULL,
tvga8900d_available,
tvga_speed_changed,
tvga_force_redraw,
tvga_add_status_info