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Ported the latest fixes of the SCAMP EMS implementation from PCem.

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This commit is contained in:
TC1995
2022-02-07 19:14:54 +01:00
parent b73d8f4c2f
commit b50e153400
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: