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Fix CPU-Z on IBM 486

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It turns out that the IBM 486 does indeed have the AC bit in EFLAGS, based on CPU-Z detection behavior.
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plant
2022-10-31 00:12:39 -06:00
parent 021eb600bb
commit c80d2a0209
2 changed files with 4 additions and 4 deletions
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4
src/cpu/x86_ops_flag.h
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@@ -293,11 +293,11 @@ static int opPOPFD(uint32_t fetchdat)
else if (IOPLp) cpu_state.flags = (cpu_state.flags & 0x3000) | (templ & 0x4fd5) | 2;
else cpu_state.flags = (cpu_state.flags & 0x3200) | (templ & 0x4dd5) | 2;
templ &= (is486) ? 0x3c0000 : 0;
templ &= (is486 || isibm486) ? 0x3c0000 : 0;
templ |= ((cpu_state.eflags&3) << 16);
if (cpu_CR4_mask & CR4_VME) cpu_state.eflags = (templ >> 16) & 0x3f;
else if (CPUID) cpu_state.eflags = (templ >> 16) & 0x27;
else if (is486) cpu_state.eflags = (templ >> 16) & 7;
else if (is486 || isibm486) cpu_state.eflags = (templ >> 16) & 7;
else cpu_state.eflags = (templ >> 16) & 3;
flags_extract();