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PS55DA2: Fix color palette issue in Win3.1

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* Fixed an issue that the color palette remains changed after Windows 3.1 restarted with 1024x768 16 color mode.
This commit is contained in:
Akamaki
2026-02-26 23:30:42 +09:00
parent 0c4877bd90
commit 96db09418c
1 changed files with 8 additions and 8 deletions
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16
src/video/vid_ps55da2.c
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@@ -263,7 +263,7 @@
#define LG_SET_RESET_2 0x10
#ifndef RELEASE_BUILD
#define ENABLE_DA2_LOG 1
// #define ENABLE_DA2_LOG 1
#endif
#ifdef ENABLE_DA2_LOG
@@ -3228,6 +3228,13 @@ da2_reset_ioctl(da2_t *da2)
da2->ioctl[LS_RESET] = 0x00; /* Bit 0: Reset sequencer */
da2_outw(LS_INDEX, 0x0302, da2); /* Index 02, Bit 1: VGA passthrough, Bit 0: Character Mode */
da2_outw(LS_INDEX, 0x0008, da2); /* Index 08, Bit 0: Enable MMIO */
/* Set default color palette (Windows 3.1 display driver won't reset palette regs) */
for (uint16_t i = 0; i < 256; i++) {
da2->vgapal[i].r = ps55_palette_color[i & 0x3F][0];
da2->vgapal[i].g = ps55_palette_color[i & 0x3F][1];
da2->vgapal[i].b = ps55_palette_color[i & 0x3F][2];
da2->pallook[i] = makecol32((da2->vgapal[i].r & 0x3f) * 4, (da2->vgapal[i].g & 0x3f) * 4, (da2->vgapal[i].b & 0x3f) * 4);
}
}
static void
@@ -3255,13 +3262,6 @@ da2_reset(void *priv)
da2->attrc[LV_CURSOR_CONTROL] = 0x13; /* cursor options */
da2->attr_palette_enable = 0; /* disable attribute generator */
/* Set default color palette (Windows 3.1 display driver won't reset palette) */
for (uint16_t i = 0; i < 256; i++) {
da2->vgapal[i].r = ps55_palette_color[i & 0x3F][0];
da2->vgapal[i].g = ps55_palette_color[i & 0x3F][1];
da2->vgapal[i].b = ps55_palette_color[i & 0x3F][2];
da2->pallook[i] = makecol32((da2->vgapal[i].r & 0x3f) * 4, (da2->vgapal[i].g & 0x3f) * 4, (da2->vgapal[i].b & 0x3f) * 4);
}
da2_log("da2_reset done.\n");
}