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Fixed black screen and crash when using the ATI VGA Wonder XL24.

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This commit is contained in:
OBattler
2016-08-03 01:32:04 +02:00
parent 6a1099155b
commit afc6f931ca
4 changed files with 27 additions and 21 deletions
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34
src/vid_ati28800.c
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@@ -42,26 +42,26 @@ void ati28800_out(uint16_t addr, uint8_t val, void *p)
ati28800->index = val;
break;
case 0x1cf:
ati28800->regs[ati28800->index] = val;
switch (ati28800->index)
ati28800->regs[ati28800->index & 0x3f] = val;
switch (ati28800->index & 0x3f)
{
case 0xad:
if (gfxcard == GFX_VGAWONDERXL24)
case 0x2d:
if ((gfxcard == GFX_VGAWONDERXL24) && (val & 8))
{
svga->charseta = (svga->charseta & 0x3ffff) | ((((uint32_t) val) >> 4) << 18);
svga->charsetb = (svga->charsetb & 0x3ffff) | ((((uint32_t) val) >> 4) << 18);
}
break;
case 0xb2:
case 0xbe:
if (ati28800->regs[0xbe] & 8) /*Read/write bank mode*/
case 0x32:
case 0x3e:
if (ati28800->regs[0x3e] & 8) /*Read/write bank mode*/
{
svga->read_bank = ((ati28800->regs[0xb2] >> 5) & 7) * 0x10000;
svga->write_bank = ((ati28800->regs[0xb2] >> 1) & 7) * 0x10000;
svga->read_bank = ((ati28800->regs[0x32] >> 5) & 7) * 0x10000;
svga->write_bank = ((ati28800->regs[0x32] >> 1) & 7) * 0x10000;
}
else /*Single bank mode*/
svga->read_bank = svga->write_bank = ((ati28800->regs[0xb2] >> 1) & 7) * 0x10000;
svga->read_bank = svga->write_bank = ((ati28800->regs[0x32] >> 1) & 7) * 0x10000;
break;
case 0xb3:
ati_eeprom_write(&ati28800->eeprom, val & 8, val & 2, val & 1);
@@ -110,20 +110,20 @@ uint8_t ati28800_in(uint16_t addr, void *p)
temp = ati28800->index;
break;
case 0x1cf:
switch (ati28800->index)
switch (ati28800->index & 0x3f)
{
case 0xaa:
case 0x2a:
temp = (gfxcard == GFX_VGAWONDERXL24) ? 6 : 5;
break;
case 0xb7:
temp = ati28800->regs[ati28800->index] & ~8;
case 0x37:
temp = ati28800->regs[ati28800->index & 0x3f] & ~8;
if (ati_eeprom_read(&ati28800->eeprom))
temp |= 8;
break;
default:
temp = ati28800->regs[ati28800->index];
temp = ati28800->regs[ati28800->index & 0x3f];
break;
}
break;
@@ -187,7 +187,7 @@ void ati28800_svga_recalctimings(ati28800_t *ati28800)
svga->hdisp++;
svga->htotal = svga->crtc[0];
if ((ati28800->regs[0xad] & 8) && (gfxcard == GFX_VGAWONDERXL24)) svga->htotal |= (ati28800->regs[0xad] & 1) ? 0x100 : 0;
if ((ati28800->regs[0x2d] & 8) && (gfxcard == GFX_VGAWONDERXL24)) svga->htotal |= (ati28800->regs[0x2d] & 1) ? 0x100 : 0;
svga->htotal += 6; /*+6 is required for Tyrian*/
svga->rowoffset = svga->crtc[0x13];
@@ -312,7 +312,7 @@ void ati28800_recalctimings(svga_t *svga)
#ifndef RELEASE_BUILD
pclog("ati28800_recalctimings\n");
#endif
if (!svga->scrblank && (ati28800->regs[0xb0] & 0x20)) /*Extended 256 colour modes*/
if (!svga->scrblank && (ati28800->regs[0x30] & 0x20)) /*Extended 256 colour modes*/
{
#ifndef RELEASE_BUILD
pclog("8bpp_highres\n");

7
src/vid_ati_mach64.c
View File

@@ -276,8 +276,11 @@ void mach64_out(uint16_t addr, uint8_t val, void *p)
mach64->regs[mach64->index & 0x3f] = val;
if ((mach64->index & 0x3f) == 0x2d)
{
svga->charseta = (svga->charseta & 0x3ffff) | ((((uint32_t) val) >> 4) << 18);
svga->charsetb = (svga->charsetb & 0x3ffff) | ((((uint32_t) val) >> 4) << 18);
if (val & 8)
{
svga->charseta = (svga->charseta & 0x3ffff) | ((((uint32_t) val) >> 4) << 18);
svga->charsetb = (svga->charsetb & 0x3ffff) | ((((uint32_t) val) >> 4) << 18);
}
break;
}
if ((mach64->index & 0x3f) == 0x36)

6
src/vid_svga.c
View File

@@ -136,8 +136,10 @@ void svga_out(uint16_t addr, uint8_t val, void *p)
svga->writemask = val & 0xf;
break;
case 3:
svga->charsetb = (((val >> 2) & 3) * 0x10000) + 2;
svga->charseta = ((val & 3) * 0x10000) + 2;
svga->charsetb &= ~0x3ffff;
svga->charseta &= ~0x3ffff;
svga->charsetb |= (((val >> 2) & 3) * 0x10000) + 2;
svga->charseta |= ((val & 3) * 0x10000) + 2;
if (val & 0x10)
svga->charseta += 0x8000;
if (val & 0x20)

1
src/vid_svga_render.c
View File

@@ -128,6 +128,7 @@ void svga_render_text_80(svga_t *svga)
attr = svga->vram[(svga->ma << 1) + 1];
if (attr & 8) charaddr = svga->charsetb + (chr * 128);
else charaddr = svga->charseta + (chr * 128);
pclog("Character address is: %08X\n", charaddr);
if (drawcursor)
{