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Video optimisations. Fixed VRAM mask on S3.

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This commit is contained in:
TomW 2013-07-09 19:30:53 +01:00
commit f431e74917
19 changed files with 372 additions and 234 deletions
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5
src/vid_s3.c
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@ -107,7 +107,7 @@ void s3_out(uint16_t addr, uint8_t val, void *p)
{
case 0x31:
s3->ma_ext = (s3->ma_ext & 0x1c) | ((val & 0x30) >> 4);
svga->vrammask = (val & 8) ? 0x3fffff : 0x3ffff;
svga->vrammask = /*(val & 8) ? */0x3fffff/* : 0x3ffff*/;
break;
case 0x50:
@ -134,6 +134,7 @@ void s3_out(uint16_t addr, uint8_t val, void *p)
break;
case 0x51:
s3->bank = (s3->bank & 0x4f) | ((val & 0xc) << 2);
// pclog("CRTC write R51 %02X\n", val);
if (svga->chain4) svga->write_bank = svga->read_bank = s3->bank << 16;
else svga->write_bank = svga->read_bank = s3->bank << 14;
s3->ma_ext = (s3->ma_ext & ~0xc) | ((val & 3) << 2);
@ -189,7 +190,7 @@ void s3_out(uint16_t addr, uint8_t val, void *p)
{
if (svga->crtcreg < 0xe || svga->crtcreg > 0x10)
{
fullchange = changeframecount;
svga->fullchange = changeframecount;
svga_recalctimings(svga);
}
}