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Fixed CRTC register readout on the Hercules, fixes #1656.

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OBattler
2021-09-05 19:03:32 +02:00
parent 16c7b632b6
commit b834365f30
1 changed files with 4 additions and 3 deletions
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7
src/video/vid_hercules.c
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@@ -203,11 +203,12 @@ hercules_in(uint16_t addr, void *priv)
case 0x03b3:
case 0x03b5:
case 0x03b7:
ret = dev->crtc[dev->crtcreg];
if (dev->crtcreg == 12)
if (dev->crtcreg == 0x0c)
ret = (dev->ma >> 8) & 0x3f;
else
else if (dev->crtcreg == 0x0d)
ret = dev->ma & 0xff;
else
ret = dev->crtc[dev->crtcreg];
break;
case 0x03ba: