80486DX2-66/86Box-fork
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Fixed the svga mapping on 80x and 928 cards.

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This commit is contained in:
TC1995
2020-06-25 17:18:25 +02:00
parent 1ae91c6eff
commit a9f01c4814
1 changed files with 7 additions and 2 deletions
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9
src/video/vid_s3.c
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@@ -1720,7 +1720,7 @@ void s3_updatemapping(s3_t *s3)
s3->linear_base = (svga->crtc[0x5a] << 16) | (svga->crtc[0x59] << 24);
if ((s3->chip == S3_86C801) || (s3->chip == S3_86C805) ||
(s3->chip == S3_86C911) || (s3->chip == S3_86C928)) {
(s3->chip == S3_86C928)) {
if (s3->vlb)
s3->linear_base &= 0x03ffffff;
else
@@ -1768,6 +1768,10 @@ void s3_updatemapping(s3_t *s3)
/* Memory mapped I/O. */
if ((svga->crtc[0x53] & 0x10) || (s3->accel.advfunc_cntl & 0x20)) {
/* Old MMIO. */
if ((s3->chip == S3_86C801) || (s3->chip == S3_86C805) ||
(s3->chip == S3_86C928))
mem_mapping_disable(&svga->mapping);
mem_mapping_enable(&s3->mmio_mapping);
} else
mem_mapping_disable(&s3->mmio_mapping);
@@ -1834,7 +1838,8 @@ void s3_accel_out(uint16_t port, uint8_t val, void *p)
break;
case 0x4948: case 0x4ae8:
s3->accel.advfunc_cntl = val;
s3_updatemapping(s3);
if (s3->chip != S3_86C911)
s3_updatemapping(s3);
break;
}
}