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Merge pull request #3541 from pmackinlay/interpro

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clipper: two more instructions (nw)
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ajrhacker 2018-05-09 01:07:47 -04:00 committed by GitHub
commit 561c6d7106
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1 changed files with 15 additions and 5 deletions
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20
src/devices/cpu/clipper/clipper.cpp
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@ -1864,17 +1864,27 @@ void clipper_c400_device::execute_instruction()
case 0x4a:
case 0x4b:
// cdb: call with delayed branch?
// cdb: compare and delayed branch?
// emulate.h: "cdb is special because it does not support all addressing modes", 2-3 parcels
fatalerror("cdb pc 0x%08x\n", m_info.pc);
case 0x4c:
case 0x4d:
// cdbeq: call with delayed branch if equal?
fatalerror("cdbeq pc 0x%08x\n", m_info.pc);
// cdbeq: compare and delayed branch if equal?
if (m_r[R2] == 0)
{
m_psw |= DSP_SETUP;
m_db_pc = m_info.address;
}
break;
case 0x4e:
case 0x4f:
// cdbne: call with delayed branch if not equal?
fatalerror("cdbne pc 0x%08x\n", m_info.pc);
// cdbne: compare and delayed branch if not equal?
if (m_r[R2] != 0)
{
m_psw |= DSP_SETUP;
m_db_pc = m_info.address;
}
break;
case 0x50:
case 0x51:
// db*: delayed branch on condition