HelenOS sources

MSIM_KBD_IRQ      122 kernel/arch/mips32/src/mach/msim/msim.c 	    dsrlnin_init((dsrlnin_t *) MSIM_KBD_ADDRESS, MSIM_KBD_IRQ);
MSIM_KBD_IRQ      129 kernel/arch/mips32/src/mach/msim/msim.c 			cp0_unmask_int(MSIM_KBD_IRQ);
MSIM_KBD_IRQ      121 uspace/drv/platform/msim/msim.c 			.irq = MSIM_KBD_IRQ
HelenOS homepage, sources at GitHub