ICU_IRQ_SLAVE
outb(IO_ICU1 + ICU_IMR_OFFSET, 1 << ICU_IRQ_SLAVE);
outb(IO_ICU2 + ICU_IMR_OFFSET, ICU_IRQ_SLAVE);
ICU_INTREN(ICU_IRQ_SLAVE);
if (intr == ICU_IRQ_SLAVE)
icu_irqmaps[cpu][ICU_IRQ_SLAVE].im_type =