Interrupt controller and interrupt control method

摘要: An interrupt controller superior in maintenance performance and expandability. 10 comprises a queue circuit 11 that holds channel numbers corresponding to inputs the order of priority levels, control 12 changes channels held according new levels when level corresponds any number is changed. The changed at time setting unrelated inputs. In select an be notified CPU 20 , factor selection 15 checks whether or not each has input turn from head queue.