dio_intr_establish
dio_intr_establish(arcofi_hwintr, sc, ipl, ISRPRI_AUDIO);
dsc->sc_ih = dio_intr_establish(comintr, sc, da->da_ipl, ISRPRI_TTY);
(void)dio_intr_establish(dcmintr, sc, da->da_ipl, ISRPRI_TTY);
void *dio_intr_establish(int (*)(void *), void *, int, int);
(void)dio_intr_establish(fhpibintr, sc, da->da_ipl, ISRPRI_BIO);
(void) dio_intr_establish(leintr, sc, da->da_ipl, ISRPRI_NET);
(void)dio_intr_establish(nhpibintr, sc, da->da_ipl, ISRPRI_BIO);
dio_intr_establish(spc_intr, (void *)sc, da->da_ipl, ISRPRI_BIO);