public pia6821_interface( Mame.mem_read_handler in_a_func, Mame.mem_read_handler in_b_func,
Mame.mem_read_handler in_ca1_func, Mame.mem_read_handler in_cb1_func, Mame.mem_read_handler in_ca2_func, Mame.mem_read_handler in_cb2_func,
Mame.mem_write_handler out_a_func,Mame.mem_write_handler out_b_func,
Mame.mem_write_handler out_ca2_func, Mame.mem_write_handler out_cb2_func,
irqcallfunc irq_a_func, irqcallfunc irq_b_func)
{
this.in_a_func = in_a_func;
this.in_b_func = in_b_func;
this.in_ca1_func = in_ca1_func;
this.in_cb1_func = in_cb1_func;
this.in_ca2_func = in_ca2_func;
this.in_cb2_func = in_cb2_func;
this.irq_a_func = irq_a_func;
this.irq_b_func = irq_b_func;
this.out_a_func = out_a_func;
this.out_b_func = out_b_func;
this.out_ca2_func = out_ca2_func;
this.out_cb2_func = out_cb2_func;
}
static void update_shared_irq_handler(irqcallfunc irq_func)
{
int i;
/* search all PIAs for this same IRQ function */
for (i = 0; i < MAX_PIA; i++)
if (pia[i].intf != null)
{
/* check IRQ A */
if (pia[i].intf.irq_a_func == irq_func && pia[i].irq_a_state != 0)
{
irq_func(1);
return;
}
/* check IRQ B */
if (pia[i].intf.irq_b_func == irq_func && pia[i].irq_b_state != 0)
{
irq_func(1);
return;
}
}
/* if we found nothing, the state is off */
irq_func(0);
}
