IRQ_IDE            53 ide.c            picenable(IRQ_IDE);
IRQ_IDE            54 ide.c            ioapicenable(IRQ_IDE, ncpu - 1);
IRQ_IDE            59 trap.c           case T_IRQ0 + IRQ_IDE:
IRQ_IDE            63 trap.c           case T_IRQ0 + IRQ_IDE+1: