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More (S)VGA horizontal blanking fixes and CPU CR0 bit 4 fixes.

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OBattler
2024-02-09 18:02:33 +01:00
parent 30e7a49558
commit 3f8952a558
8 changed files with 58 additions and 52 deletions
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6
src/video/vid_voodoo_banshee.c
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@@ -557,14 +557,14 @@ banshee_recalctimings(svga_t *svga)
/* Video processing mode - assume timings akin to Cirrus' special blanking mode,
that is, no overscan and relying on display end to blank. */
if (banshee->vgaInit0 & 0x40) {
svga->hblankstart = svga->crtc[1] + ((svga->crtc[3] >> 5) & 3) +
svga->hblankstart = svga->crtc[1]/* + ((svga->crtc[3] >> 5) & 3)*/ +
(((svga->crtc[0x1a] & 0x04) >> 2) << 8) + 1;
svga->hblank_end_mask = 0x0000007f;
} else {
svga->hblankstart = svga->crtc[1] + ((svga->crtc[3] >> 5) & 3) + 1;
svga->hblankstart = svga->crtc[1]/* + ((svga->crtc[3] >> 5) & 3)*/ + 1;
svga->hblank_end_mask = 0x0000003f;
}
svga->hblank_end_val = ((svga->crtc[3] >> 5) & 3);
svga->hblank_end_val = svga->htotal - 1 /* + ((svga->crtc[3] >> 5) & 3)*/;
/* In this mode, the dots per clock are always 8 or 16, never 9 or 18. */
if (!svga->scrblank && svga->attr_palette_enable)