claunia/86Box
1
0
Fork 0
Code Issues Pull Requests Actions 3 Packages Projects Releases Wiki Activity

Horizontal blanking calculation now takes into account horizontal timings multiplications and divisions, fixes a lot of S3 (and ViRGE) modes.

Browse Source
This commit is contained in:
OBattler
2024-01-13 03:54:56 +01:00
parent 8552558cfd
commit 996530a94e
8 changed files with 271 additions and 93 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
src/video/vid_mga.c
View File

@@ -945,8 +945,6 @@ mystique_recalctimings(svga_t *svga)
svga->htotal |= 0x100;
svga->hblankstart = (((mystique->crtcext_regs[1] & 0x02) >> 2) << 8) + svga->crtc[2] + 1;
svga->hblank_end_val = (svga->crtc[3] & 0x1f) | (((svga->crtc[5] & 0x80) >> 7) << 5) |
(((mystique->crtcext_regs[1] & 0x40) >> 6) << 6);
if (mystique->crtcext_regs[2] & CRTCX_R2_VTOTAL10)
svga->vtotal |= 0x400;
@@ -978,8 +976,9 @@ mystique_recalctimings(svga_t *svga)
svga->hdisp_time = svga->hdisp;
svga->rowoffset = svga->crtc[0x13] | ((mystique->crtcext_regs[0] & CRTCX_R0_OFFSET_MASK) << 4);
svga->hblank_end_val = (mystique->crtcext_regs[1] & 0x40) | (svga->crtc[3] & 0x1f) |
((svga->crtc[5] & 0x80) ? 0x20 : 0x00);
svga->dots_per_clock = 8;
svga->hblank_end_val = (svga->crtc[3] & 0x1f) | (((svga->crtc[5] & 0x80) >> 7) << 5) |
(((mystique->crtcext_regs[1] & 0x40) >> 6) << 6);
svga->hblank_overscan = 0;