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Intel i4x0: Extended the old register 52h behavior to all 430FX, 430HX, 430VX, and 430TX machines.

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OBattler
2024-05-09 18:10:32 +02:00
parent 72ff4501f7
commit 62193ab259
1 changed files with 2 additions and 5 deletions
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7
src/chipset/intel_4x0.c
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@@ -518,15 +518,12 @@ i4x0_write(int func, int addr, uint8_t val, void *priv)
case INTEL_430FX:
case INTEL_430VX:
case INTEL_430TX:
if (!strcmp(machine_get_internal_name(), "mb500n") || (strstr(machine_get_internal_name(), "mr") != NULL))
regs[0x52] = val;
else
regs[0x52] = (regs[0x52] & 0xf4) | (val & 0x0b);
regs[0x52] = (regs[0x52] & 0x04) | (val & 0xfb);
cpu_cache_ext_enabled = ((val & 0x03) == 0x01);
cpu_update_waitstates();
break;
case INTEL_430HX:
regs[0x52] = (regs[0x52] & 0xf0) | (val & 0x0f);
regs[0x52] = val;
cpu_cache_ext_enabled = ((val & 0x03) == 0x01);
cpu_update_waitstates();
break;