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ATI 28800 (VGA Charger) was selecting the wrong dot clock for VGA

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standard graphics modes. In the absence of better information or a
board to test with, I am currently assuming the table I used as
reference was incorrect. Changing timings to allow for correct
refresh rate.
This commit is contained in:
SarahW 2020-11-23 21:57:15 +00:00
commit 6f8401c72c
1 changed files with 1 additions and 1 deletions
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2
src/vid_ati28800.c
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@ -282,7 +282,7 @@ void ati28800_recalctimings(svga_t *svga)
case 0x09: svga->clock = (cpuclock * (double)(1ull << 32)) / 32000000.0; break;
case 0x0A: svga->clock = (cpuclock * (double)(1ull << 32)) / 37500000.0; break;
case 0x0B: svga->clock = (cpuclock * (double)(1ull << 32)) / 39000000.0; break;
case 0x0C: svga->clock = (cpuclock * (double)(1ull << 32)) / 40000000.0; break;
case 0x0C: svga->clock = (cpuclock * (double)(1ull << 32)) / 50350000.0; break;
case 0x0D: svga->clock = (cpuclock * (double)(1ull << 32)) / 56644000.0; break;
case 0x0E: svga->clock = (cpuclock * (double)(1ull << 32)) / 75000000.0; break;
case 0x0F: svga->clock = (cpuclock * (double)(1ull << 32)) / 65000000.0; break;