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ICS 53xx/GENDAC/SDAC RAMDAC fixes.

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This commit is contained in:
OBattler
2021-06-05 20:24:51 +02:00
parent f870f3439c
commit b4d35af149
1 changed files with 5 additions and 15 deletions
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20
src/video/vid_sdac_ramdac.c
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@@ -167,10 +167,6 @@ sdac_ramdac_out(uint16_t addr, int rs2, uint8_t val, void *p, svga_t *svga)
switch (ramdac->magic_count) {
case 4:
sdac_control_write(ramdac, svga, val);
if (!(ramdac->type & ICS_S3))
ramdac->magic_count = 0;
break;
case 5:
ramdac->magic_count = 0;
break;
default:
@@ -215,21 +211,15 @@ sdac_ramdac_in(uint16_t addr, int rs2, void *p, svga_t *svga)
switch (rs) {
case 0x02:
switch (ramdac->magic_count) {
case 1:
case 2: case 3:
case 1: case 2:
temp = 0x00;
ramdac->magic_count++;
break;
case 4:
if (ramdac->type & ICS_S3) {
temp = 0x70; /* SDAC ID */
ramdac->magic_count++;
} else {
temp = ramdac->command;
ramdac->magic_count = 0;
}
case 3:
temp = (ramdac->type & ICS_S3) ? 0x70 : 0x00;
ramdac->magic_count++;
break;
case 5:
case 4:
temp = ramdac->command;
ramdac->magic_count = 0;
break;