80486DX2-66/86Box-fork
1
0
Fork 0
Code Issues Pull Requests Activity

ICS 53xx/GENDAC/SDAC RAMDAC fixes.

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

20
src/video/vid_sdac_ramdac.c
View File

@@ -167,10 +167,6 @@ sdac_ramdac_out(uint16_t addr, int rs2, uint8_t val, void *p, svga_t *svga)
switch (ramdac->magic_count) { switch (ramdac->magic_count) {
case 4: case 4:
sdac_control_write(ramdac, svga, val); sdac_control_write(ramdac, svga, val);
if (!(ramdac->type & ICS_S3))
ramdac->magic_count = 0;
break;
case 5:
ramdac->magic_count = 0; ramdac->magic_count = 0;
break; break;
default: default:
@@ -215,21 +211,15 @@ sdac_ramdac_in(uint16_t addr, int rs2, void *p, svga_t *svga)
switch (rs) { switch (rs) {
case 0x02: case 0x02:
switch (ramdac->magic_count) { switch (ramdac->magic_count) {
case 1: case 1: case 2:
case 2: case 3:
temp = 0x00; temp = 0x00;
ramdac->magic_count++; ramdac->magic_count++;
break; break;
case 4: case 3:
if (ramdac->type & ICS_S3) { temp = (ramdac->type & ICS_S3) ? 0x70 : 0x00;
temp = 0x70; /* SDAC ID */ ramdac->magic_count++;
ramdac->magic_count++;
} else {
temp = ramdac->command;
ramdac->magic_count = 0;
}
break; break;
case 5: case 4:
temp = ramdac->command; temp = ramdac->command;
ramdac->magic_count = 0; ramdac->magic_count = 0;
break; break;