/*
* run the cpu
*/
void cpu_run(void)
{
byte i;
const Instr *pi;
cpu_reset();
do {
/* check for pending interrupts */
if (!get_int_disable_flag() && (pending_interrupt & HANDLE_IRQ))
DO_INTERRUPT();
if (pending_interrupt & HANDLE_NMI) {
pending_interrupt &= ~HANDLE_NMI;
DO_NMI();
}
/* fetch the next instruction */
i = fetch_byte(cpu.pc);
pi = instructions[i];
if (NULL == pi) {
warning("unrecognized instruction \"$%.2x\" at $%.4hx.\n",
i, cpu.pc);
break;
}
/* execute the instruction */
(*pi->fnc)();
} while (!err);
}
static void set_irq_line(int irqline, int state)
{
if (irqline == INPUT_LINE_NMI)
{
if (h6280.nmi_state == state) return;
h6280.nmi_state = state;
if (state != CLEAR_LINE)
{
DO_INTERRUPT(H6280_NMI_VEC);
}
}
else if (irqline < 3)
{
h6280.irq_state[irqline] = state;
/* If line is cleared, just exit */
if (state == CLEAR_LINE) return;
/* Check if interrupts are enabled and the IRQ mask is clear */
CHECK_IRQ_LINES;
}
}