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Merge pull request #3625 from 86Box/tc1995

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Assorted TGUI9440/96x0 fixes:
This commit is contained in:
Miran Grča
2023-08-23 20:46:53 +02:00
committed by GitHub
parent 03ef27b6ac 28db0d37df
commit 67ea9d733b
1 changed files with 20 additions and 3 deletions
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23
src/video/vid_tgui9440.c
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@@ -646,6 +646,7 @@ void
tgui_recalctimings(svga_t *svga)
{
const tgui_t *tgui = (tgui_t *) svga->priv;
uint8_t ger22lower = (tgui->accel.ger22 & 0xff);
uint8_t ger22upper = (tgui->accel.ger22 >> 8);
if (!svga->rowoffset)
@@ -771,7 +772,8 @@ tgui_recalctimings(svga_t *svga)
}
switch (svga->hdisp) {
case 640:
svga->rowoffset = 80;
if (!ger22lower)
svga->rowoffset = 80;
break;
default:
@@ -2063,17 +2065,25 @@ tgui_accel_out(uint16_t addr, uint8_t val, void *priv)
break;
case 0x2123:
//pclog("Pitch IO23: val = %02x, rowoffset = %x, pitch = %d.\n", val, svga->rowoffset, tgui->accel.pitch);
tgui->accel.ger22 = (tgui->accel.ger22 & 0xff) | (val << 8);
if ((val & 0x80) || ((val & 0xc0) == 0x40))
tgui->accel.pitch = svga->rowoffset << 3;
else if (tgui->accel.pitch <= 1024)
else if (tgui->accel.pitch <= 1024) {
tgui->accel.pitch = svga->rowoffset << 3;
if (!val)
tgui->accel.pitch = 1024;
}
if (tgui->accel.bpp == 1)
tgui->accel.pitch >>= 1;
else if (tgui->accel.bpp == 3)
tgui->accel.pitch >>= 2;
if (tgui->accel.pitch == 800)
tgui->accel.pitch += 32;
svga_recalctimings(svga);
break;
@@ -2712,17 +2722,24 @@ tgui_accel_write(uint32_t addr, uint8_t val, void *priv)
break;
case 0x23:
//pclog("Pitch MM23: val = %02x, rowoffset = %x, pitch = %d.\n", val, svga->rowoffset, tgui->accel.pitch);
tgui->accel.ger22 = (tgui->accel.ger22 & 0xff) | (val << 8);
if ((val & 0x80) || ((val & 0xc0) == 0x40))
tgui->accel.pitch = svga->rowoffset << 3;
else if (tgui->accel.pitch <= 1024)
else if (tgui->accel.pitch <= 1024) {
tgui->accel.pitch = svga->rowoffset << 3;
if (!val)
tgui->accel.pitch = 1024;
}
if (tgui->accel.bpp == 1)
tgui->accel.pitch >>= 1;
else if (tgui->accel.bpp == 3)
tgui->accel.pitch >>= 2;
if (tgui->accel.pitch == 800)
tgui->accel.pitch += 32;
svga_recalctimings(svga);
break;