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Rework video memory handling to cater for open bus and VRAM address wrapping. Fixes more hangs with Trio64 and Windows 95.

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This commit is contained in:
SarahW 2017-10-22 12:41:10 +01:00
commit 39a68d757b
10 changed files with 174 additions and 117 deletions
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4
src/vid_ati_mach64.c
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@ -468,12 +468,12 @@ void mach64_recalctimings(svga_t *svga)
break;
}
svga->vrammask = mach64->vram_mask;
svga->vram_display_mask = mach64->vram_mask;
// pclog("mach64_recalctimings : frame %i,%i disp %i,%i vsync at %i rowoffset %i pixel clock %f MA %08X\n", svga->htotal, svga->vtotal, svga->hdisp, svga->dispend, svga->vsyncstart, svga->rowoffset, svga->clock, svga->ma);
}
else
{
svga->vrammask = (mach64->regs[0x36] & 0x01) ? mach64->vram_mask : 0x3ffff;
svga->vram_display_mask = (mach64->regs[0x36] & 0x01) ? mach64->vram_mask : 0x3ffff;
}
}