ICU_SLAVEID
if (i == ICU_SLAVEID)
outb(imr_addr, ICU_SLAVEID);
outb(imr_addr, IRQ_MASK(ICU_SLAVEID));
atpic_enable_source((struct intsrc *)&atintrs[ICU_SLAVEID]);
if (i == ICU_SLAVEID)
outb(IO_ICU1 + ICU_IMR_OFFSET, IRQ_MASK(ICU_SLAVEID));
outb(IO_ICU2 + ICU_IMR_OFFSET, ICU_SLAVEID);