Back out display and cursor skew changes from commit ed30e17. Fixes o…

…ffset display on some SVGA cards.
sarah-walker-pcem · Feb 8, 2021 · 55e84c3 · 55e84c3
1 parent 9687a85
commit 55e84c3
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/src/vid_svga.c b/src/vid_svga.c
@@ -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;