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Merge pull request #2057 from 86Box/tc1995

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Ported the latest fixes of the SCAMP EMS implementation from PCem.
This commit is contained in:
Miran Grča
2022-02-07 20:05:11 +01:00
committed by GitHub
parent 81148be7e3 b50e153400
commit 8bbcfd126f
1 changed files with 3 additions and 3 deletions
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6
src/chipset/scamp.c
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@@ -729,7 +729,7 @@ scamp_write(uint16_t addr, uint8_t val, void *priv)
recalc_ems(dev);
}
if (dev->ems_autoinc)
dev->ems_index = (dev->ems_index + 1) & 0x1f;
dev->ems_index = (dev->ems_index + 1) & 0x3f;
break;
case 0xec:
@@ -795,9 +795,9 @@ scamp_read(uint16_t addr, void *priv)
break;
case 0xeb:
if (dev->ems_index < 0x24)
ret = dev->ems[dev->ems_index] = (dev->ems[dev->ems_index] >> 8) & 0xfc;
ret = (dev->ems[dev->ems_index] >> 8) | 0xfc;
if (dev->ems_autoinc)
dev->ems_index = (dev->ems_index + 1) & 0x1f;
dev->ems_index = (dev->ems_index + 1) & 0x3f;
break;
case 0xed: