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latching of external_input makes previous revert to work by Juergen(nw)

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This commit is contained in:
Miodrag Milanovic 2016-01-13 13:36:07 +01:00
parent 603dfb67c4
commit 52e5987dcb
2 changed files with 9 additions and 4 deletions
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12
src/devices/cpu/ccpu/ccpu.cpp
View File

@ -121,6 +121,7 @@ void ccpu_cpu_device::device_start()
save_item(NAME(m_drflag));
save_item(NAME(m_waiting));
save_item(NAME(m_watchdog));
save_item(NAME(m_extinput));
// Register state for debugger
state_add( CCPU_PC, "PC", m_PC).formatstr("%04X");
@ -149,7 +150,7 @@ void ccpu_cpu_device::state_string_export(const device_state_entry &entry, std::
TEST_NC ? 'N' : 'n',
TEST_LT ? 'L' : 'l',
TEST_EQ ? 'E' : 'e',
m_external_input() ? 'M' : 'm',
m_extinput ? 'M' : 'm',
TEST_DR ? 'D' : 'd');
break;
}
@ -206,8 +207,11 @@ void ccpu_cpu_device::execute_run()
m_nextmiflag = m_nextnextmiflag;
/* fetch the opcode */
opcode = READOP(m_PC);
if (opcode == 0x51 || opcode == 0x59)
m_extinput = m_external_input();
debugger_instruction_hook(this, m_PC);
opcode = READOP(m_PC++);
m_PC++;
switch (opcode)
{
@ -286,7 +290,7 @@ void ccpu_cpu_device::execute_run()
/* JMIB/JEHB */
case 0x51:
if (m_external_input()) { m_PC = ((m_PC - 1) & 0xf000) + m_J; CYCLES(2); }
if (m_extinput) { m_PC = ((m_PC - 1) & 0xf000) + m_J; CYCLES(2); }
NEXT_ACC_B; CYCLES(2);
break;
@ -333,7 +337,7 @@ void ccpu_cpu_device::execute_run()
/* JMI/JEH */
case 0x59:
if (m_external_input()) { m_PC = ((m_PC - 1) & 0xf000) + m_J; CYCLES(2); }
if (m_extinput) { m_PC = ((m_PC - 1) & 0xf000) + m_J; CYCLES(2); }
NEXT_ACC_A; CYCLES(2);
break;

1
src/devices/cpu/ccpu/ccpu.h
View File

@ -113,6 +113,7 @@ protected:
UINT8 m_waiting;
UINT8 m_watchdog;
UINT8 m_extinput;
int m_icount;