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fix P

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This commit is contained in:
Andrei Holub 2025-04-18 20:25:21 -04:00
parent 652002ad37
commit ee96a22147
1 changed files with 4 additions and 1 deletions
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5
src/devices/cpu/z80/z80.cpp
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@ -505,7 +505,10 @@ u8 z80_device::flags_sz_bit(u8 value)
u8 z80_device::flags_szp(u8 value)
{
u8 f = flags_sz(value);
f |= __builtin_parity(value) ? 0 : PF;
value ^= value >> 4;
value ^= value << 2;
value ^= value >> 1;
f |= ~value & PF;
return f;
}