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Back out display and cursor skew changes from commit ed30e171. Fixes offset

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display on some SVGA cards.
This commit is contained in:
SarahW 2021-02-08 20:21:52 +00:00
commit 55e84c338b
1 changed files with 4 additions and 4 deletions
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8
src/vid_svga.c
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@ -322,7 +322,7 @@ void svga_recalctimings(svga_t *svga)
if (svga->crtc[9] & 0x20) svga->vblankstart |= 0x200;
svga->vblankstart++;
svga->hdisp = svga->crtc[1] - ((svga->crtc[5] & 0x60) >> 5);
svga->hdisp = svga->crtc[1];
svga->hdisp++;
svga->htotal = svga->crtc[0];
@ -660,9 +660,9 @@ void svga_poll(void *p)
changeframecount = svga->interlace ? 3 : 2;
svga->vslines = 0;
if (svga->interlace && svga->oddeven) svga->ma = svga->maback = svga->ma_latch + (svga->rowoffset << 1) + ((svga->crtc[5] & 0x60) >> 5);
else svga->ma = svga->maback = svga->ma_latch + ((svga->crtc[5] & 0x60) >> 5);
svga->ca = ((svga->crtc[0xe] << 8) | svga->crtc[0xf]) + ((svga->crtc[0xb] & 0x60) >> 5) + svga->ca_adj;
if (svga->interlace && svga->oddeven) svga->ma = svga->maback = svga->ma_latch + (svga->rowoffset << 1);
else svga->ma = svga->maback = svga->ma_latch;
svga->ca = ((svga->crtc[0xe] << 8) | svga->crtc[0xf]) + svga->ca_adj;
svga->ma <<= 2;
svga->maback <<= 2;