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Fix reads of 3C6 on SDAC (Bahamas 64) when not returning command register or RAMDAC ID.

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This commit is contained in:
SarahW 2019-05-12 18:00:19 +01:00
commit aa933688eb
1 changed files with 3 additions and 4 deletions
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7
src/vid_sdac_ramdac.c
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@ -96,7 +96,6 @@ void sdac_ramdac_out(uint16_t addr, uint8_t val, sdac_ramdac_t *ramdac, svga_t *
uint8_t sdac_ramdac_in(uint16_t addr, sdac_ramdac_t *ramdac, svga_t *svga)
{
uint8_t temp;
// /*if (CS!=0xC000) */pclog("IN RAMDAC %04X %04X:%04X %i %i %i\n",addr,CS,cpu_state.pc, ramdac->rs2, ramdac->rindex, ramdac->windex);
switch (addr)
{
@ -105,15 +104,15 @@ uint8_t sdac_ramdac_in(uint16_t addr, sdac_ramdac_t *ramdac, svga_t *svga)
ramdac->magic_count++;
if (ramdac->magic_count == 4)
{
temp = 0x70; /*SDAC ID*/
ramdac->rs2 = 1;
return 0x70; /*SDAC ID*/
}
if (ramdac->magic_count == 5)
{
temp = ramdac->command;
ramdac->magic_count = 0;
return ramdac->command;
}
return temp;
break;
case 3:
ramdac->magic_count=0;
break;