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TGUI96x0 banking fixes.

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This commit is contained in:
OBattler
2021-07-09 23:58:56 +02:00
parent 782fdf7883
commit 49232557d7
1 changed files with 14 additions and 13 deletions
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27
src/video/vid_tgui9440.c
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@@ -275,7 +275,9 @@ tgui_out(uint16_t addr, uint8_t val, void *p)
{
tgui_t *tgui = (tgui_t *)p;
svga_t *svga = &tgui->svga;
uint8_t old;
uint8_t old, mask;
mask = (tgui->type >= TGUI_9680) ? 0x3f : 0x1f;
if (((addr&0xFFF0) == 0x3D0 || (addr&0xFFF0) == 0x3B0) && !(svga->miscout & 1)) addr ^= 0x60;
@@ -457,19 +459,18 @@ tgui_out(uint16_t addr, uint8_t val, void *p)
return;
case 0x3D8:
tgui->tgui_3d8 = val;
if (svga->gdcreg[0xf] & 4)
{
svga->write_bank = (val & 0x1f) * 65536;
if (!(svga->gdcreg[0xf] & 1))
svga->read_bank = (val & 0x1f) * 65536;
}
return;
tgui->tgui_3d8 = val;
if (svga->gdcreg[0xf] & 4) {
svga->write_bank = (val & mask) * 65536;
if (!(svga->gdcreg[0xf] & 1))
svga->read_bank = (val & mask) * 65536;
}
return;
case 0x3D9:
tgui->tgui_3d9 = val;
if ((svga->gdcreg[0xf] & 5) == 5)
svga->read_bank = (val & 0x1F) * 65536;
return;
tgui->tgui_3d9 = val;
if ((svga->gdcreg[0xf] & 5) == 5)
svga->read_bank = (val & mask) * 65536;
return;
case 0x43c8:
tgui->clock_n = val & 0x7f;