emu_pcm_intr
ch->ihandle = emu_intr_register(sc->card, ch->irqmask, ch->iprmask, &emu_pcm_intr, sc);
sc->ihandle = emu_intr_register(sc->card, inte, ipr, &emu_pcm_intr, sc);
static uint32_t emu_pcm_intr(void *pcm, uint32_t stat);
ch->ihandle = emu_intr_register(sc->card, ch->irqmask, ch->iprmask, &emu_pcm_intr, sc);