macfb: allow larger write accesses to the DAFB_LUT register

The original tests with MacOS showed that only the bottom 8 bits of the DAFB_LUT
register were used when writing to the LUT, however A/UX performs some of its
writes using 4 byte accesses. Expand the address range for the DAFB_LUT register
so that different size accesses write the correct value to the color_palette
array.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231026085650.917663-4-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Mark Cave-Ayland 2023-10-26 09:56:49 +01:00 committed by Laurent Vivier
parent 2fca4e7a71
commit ced64254d6

View file

@ -37,7 +37,7 @@
#define DAFB_INTR_STAT 0x108
#define DAFB_INTR_CLEAR 0x10c
#define DAFB_LUT_INDEX 0x200
#define DAFB_LUT 0x213
#define DAFB_LUT 0x210
#define DAFB_INTR_VBL 0x4
@ -586,8 +586,8 @@ static void macfb_ctrl_write(void *opaque,
case DAFB_LUT_INDEX:
s->palette_current = (val & 0xff) * 3;
break;
case DAFB_LUT:
s->color_palette[s->palette_current] = val;
case DAFB_LUT ... DAFB_LUT + 3:
s->color_palette[s->palette_current] = val & 0xff;
s->palette_current = (s->palette_current + 1) %
ARRAY_SIZE(s->color_palette);
if (s->palette_current % 3) {