iq->iq_ev.ev_count++;
isa_irqdispatch(arg)	void *arg;{	struct clockframe *frame = arg;	int irq;	struct intrq *iq;	struct intrhand *ih;	u_int iack;	int res = 0;	iack = *((u_int *)(DC21285_PCI_IACK_VBASE));	iack &= 0xff;	if (iack < 0x20 || iack > 0x2f) {		printf("isa_irqdispatch: %x\n", iack);		return(0);	}	irq = iack & 0x0f;	iq = &isa_intrq[irq];	iq->iq_ev.ev_count++;	for (ih = TAILQ_FIRST(&iq->iq_list); res != 1 && ih != NULL;		     ih = TAILQ_NEXT(ih, ih_list)) {		res = (*ih->ih_func)(ih->ih_arg ? ih->ih_arg : frame);	}	return res;}