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Merge pull request #1492 from 86Box/tc1995

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Cleared svga->fast when appropriate so that word writes can be execut…
This commit is contained in:
Miran Grča
2021-06-17 19:13:15 +02:00
committed by GitHub
parent 6b1773f4bb dd8559f851
commit e6add409ec
1 changed files with 6 additions and 2 deletions
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8
src/video/vid_cl54xx.c
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@@ -880,8 +880,12 @@ gd54xx_out(uint16_t addr, uint8_t val, void *p)
break;
}
svga->fast = (svga->gdcreg[8] == 0xff && !(svga->gdcreg[3] & 0x18) &&
!svga->gdcreg[1]) && ((svga->chain4 && svga->packed_chain4) || svga->fb_only);
if ((svga->crtc[0x27] == CIRRUS_ID_CLGD5422) || (svga->crtc[0x27] == CIRRUS_ID_CLGD5424))
svga->fast = (svga->gdcreg[8] == 0xff && !(svga->gdcreg[3] & 0x18) &&
!svga->gdcreg[1]) && ((svga->chain4 && svga->packed_chain4) || svga->fb_only) && !(svga->adv_flags & FLAG_ADDR_BY8); /*TODO: needs verification on other Cirrus chips*/
else
svga->fast = (svga->gdcreg[8] == 0xff && !(svga->gdcreg[3] & 0x18) &&
!svga->gdcreg[1]) && ((svga->chain4 && svga->packed_chain4) || svga->fb_only);
if (((svga->gdcaddr == 5) && ((val ^ o) & 0x70)) ||
((svga->gdcaddr == 6) && ((val ^ o) & 1)))
svga_recalctimings(svga);