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JEGA: Use colors based on a photo of the real OKI IF386AX when the LCD is in use to tell it apart more easily, and reset all devices on port 65h reset, fixes Trantor SCSI BIOS not finding any devices after such a reset.

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This commit is contained in:
OBattler
2025-03-28 03:26:28 +01:00
parent ffd00e4527
commit cec630fa75
1 changed files with 17 additions and 3 deletions
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20
src/video/vid_jega.c
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@@ -770,6 +770,8 @@ if386_p6x_read(uint16_t port, void *priv)
Bit 4: Shutdown? (caused by POST rebooting and POWER OFF command in DOS 3.21)
Bit 3: ?
*/
static uint32_t lcd_cols[8] = { 0x001024, 0x747d8a, 0x8c96a4, 0xa0abbb,
0xb1bece, 0xc0cee0, 0xceddf0, 0xdbebff };
static void
if386_p6x_write(uint16_t port, uint8_t val, void *priv)
{
@@ -793,19 +795,31 @@ if386_p6x_write(uint16_t port, uint8_t val, void *priv)
} else { /* Monochrome LCD */
for (int c = 0; c < 256; c++) {
int cval = 0;
#ifdef SIMPLE_BW
if (c & 0x0f)
cval = ((c & 0x0e) * 0x10) + 0x1f;
pallook64[c] = makecol32(cval, cval, cval);
pallook16[c] = makecol32(cval, cval, cval);
#else
if (c & 0x3f) {
cval = (c & 0x10) >> 2;
cval |= (c & 0x06) >> 1;
}
pallook64[c] = lcd_cols[cval];
cval = 0;
if (c & 0x0f)
cval = (c & 0x0e) >> 1;
pallook16[c] = lcd_cols[cval];
#endif
}
}
jega_recalctimings(jega);
} else if (p65idx == 0x05) {
if (val & 0x10)
if (val & 0x10) {
/* Power off (instead this call hardware reset here) */
device_reset_all(DEVICE_ALL);
resetx86();
/* Actually, power off - we have a function for that! */
// plat_power_off();
}
}
}
return;