Retro/pcem
Watch
1
0
Fork
You've already forked pcem
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Load VGA latches even on 'fast' chained mode byte reads. Fixes missing

Browse source 
logos on Amnesia.
This commit is contained in:
SarahW 2020-11-22 12:48:24 +00:00
commit d4dc2e9441
1 changed files with 6 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

6
src/vid_svga.c
View file

@ -1012,6 +1012,11 @@ uint8_t svga_read(uint32_t addr, void *p)
addr &= svga->decode_mask; addr &= svga->decode_mask;
if (addr >= svga->vram_max) if (addr >= svga->vram_max)
return 0xff; return 0xff;
latch_addr = addr & svga->vram_mask & ~3;
svga->la = svga->vram[latch_addr];
svga->lb = svga->vram[latch_addr | 0x1];
svga->lc = svga->vram[latch_addr | 0x2];
svga->ld = svga->vram[latch_addr | 0x3];
return svga->vram[addr & svga->vram_mask]; return svga->vram[addr & svga->vram_mask];
} }
else if (svga->chain2_read) else if (svga->chain2_read)
@ -1060,7 +1065,6 @@ uint8_t svga_read(uint32_t addr, void *p)
return ~(temp | temp2 | temp3 | temp4); return ~(temp | temp2 | temp3 | temp4);
} }
//pclog("Read %02X %04X %04X\n",vram[addr|svga->readplane],addr,svga->readplane); //pclog("Read %02X %04X %04X\n",vram[addr|svga->readplane],addr,svga->readplane);
return svga->vram[addr | readplane]; return svga->vram[addr | readplane];
} }