void nec_common_device::execute_run()
{
int prev_ICount;
if (m_halted)
{
m_icount = 0;
debugger_instruction_hook(this, (Sreg(PS)<<4) + m_ip);
return;
}
while(m_icount>0) {
/* Dispatch IRQ */
if (m_pending_irq && m_no_interrupt==0)
{
if (m_pending_irq & NMI_IRQ)
external_int();
else if (m_IF)
external_int();
}
/* No interrupt allowed between last instruction and this one */
if (m_no_interrupt)
m_no_interrupt--;
debugger_instruction_hook(this, (Sreg(PS)<<4) + m_ip);
prev_ICount = m_icount;
(this->*s_nec_instruction[fetchop()])();
do_prefetch(prev_ICount);
}
}
static CPU_EXECUTE( necv )
{
nec_state_t *nec_state = get_safe_token(device);
int prev_ICount;
if (nec_state->halted)
{
nec_state->icount = 0;
debugger_instruction_hook(device, (Sreg(PS)<<4) + nec_state->ip);
return;
}
while(nec_state->icount>0) {
/* Dispatch IRQ */
if (nec_state->pending_irq && nec_state->no_interrupt==0)
{
if (nec_state->pending_irq & NMI_IRQ)
external_int(nec_state);
else if (nec_state->IF)
external_int(nec_state);
}
/* No interrupt allowed between last instruction and this one */
if (nec_state->no_interrupt)
nec_state->no_interrupt--;
debugger_instruction_hook(device, (Sreg(PS)<<4) + nec_state->ip);
prev_ICount = nec_state->icount;
nec_instruction[fetchop(nec_state)](nec_state);
do_prefetch(nec_state, prev_ICount);
}
}
int nec_execute(int cycles)
{
nec_state_t *nec_state = sChipsPtr;
int prev_ICount;
nec_state->icount = cycles;
nec_state->cycles_remaining = cycles;
if (nec_state->halted)
{
nec_state->icount = 0;
//debugger_instruction_hook(device, (Sreg(PS)<<4) + nec_state->ip);
return cycles;
}
while((nec_state->icount>0) && (!nec_state->stop_run)) {
/* Dispatch IRQ */
if (nec_state->pending_irq && nec_state->no_interrupt==0)
{
if (nec_state->pending_irq & NMI_IRQ)
external_int(nec_state);
else if (nec_state->IF)
external_int(nec_state);
}
/* No interrupt allowed between last instruction and this one */
if (nec_state->no_interrupt)
nec_state->no_interrupt--;
//debugger_instruction_hook(device, (Sreg(PS)<<4) + nec_state->ip);
prev_ICount = nec_state->icount;
nec_instruction[fetchop(nec_state)](nec_state);
do_prefetch(nec_state, prev_ICount);
}
nec_state->cycles_total += cycles - nec_state->icount;
nec_state->cycles_remaining = 0;
nec_state->stop_run = 0;
return (cycles - nec_state->icount);
}
