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fix addc subc zeroflag

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This commit is contained in:
Michaël Banaan Ananas 2014-02-14 02:38:13 +00:00
parent 725380d4f0
commit 5e32a2dec8
1 changed files with 9 additions and 0 deletions
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9
src/emu/cpu/mn10200/mn10200.c
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@ -904,13 +904,21 @@ void mn10200_device::execute_run()
// addc dn, dm // addc dn, dm
case 0x80: case 0x80:
{
UINT16 mask0 = ~FLAG_ZF | (m_psw & FLAG_ZF);
m_d[op&3] = do_add(m_d[op&3], m_d[op>>2&3], (m_psw & FLAG_CF) ? 1 : 0); m_d[op&3] = do_add(m_d[op&3], m_d[op>>2&3], (m_psw & FLAG_CF) ? 1 : 0);
m_psw &= mask0; // ZF can only be set if it was set before the operation
break; break;
}
// subc dn, dm // subc dn, dm
case 0x90: case 0x90:
{
UINT16 mask0 = ~FLAG_ZF | (m_psw & FLAG_ZF);
m_d[op&3] = do_sub(m_d[op&3], m_d[op>>2&3], (m_psw & FLAG_CF) ? 1 : 0); m_d[op&3] = do_sub(m_d[op&3], m_d[op>>2&3], (m_psw & FLAG_CF) ? 1 : 0);
m_psw &= mask0; // ZF can only be set if it was set before the operation
break; break;
}
// add an, dm // add an, dm
case 0xc0: case 0xc0:
@ -1169,6 +1177,7 @@ void mn10200_device::execute_run()
// mov an, (abs24) // mov an, (abs24)
case 0x50: case 0x51: case 0x52: case 0x53: case 0x50: case 0x51: case 0x52: case 0x53:
m_cycles -= 1;
write_mem24(read_arg24(m_pc), m_a[op&3]); write_mem24(read_arg24(m_pc), m_a[op&3]);
break; break;