| Message ID | 20231026085650.917663-4-mark.cave-ayland@ilande.co.uk (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | macfb: A/UX fixes for colour LUT | expand |
Le 26/10/2023 à 10:56, Mark Cave-Ayland a écrit : > 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> > --- > hw/display/macfb.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/hw/display/macfb.c b/hw/display/macfb.c > index eb4ce6b824..4a1c75d572 100644 > --- a/hw/display/macfb.c > +++ b/hw/display/macfb.c > @@ -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) { Reviewed-by: Laurent Vivier <laurent@vivier.eu>
diff --git a/hw/display/macfb.c b/hw/display/macfb.c index eb4ce6b824..4a1c75d572 100644 --- a/hw/display/macfb.c +++ b/hw/display/macfb.c @@ -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) {
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> --- hw/display/macfb.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)