INTERRUPT SIGNAL ACCEPTING DEVICE AND COMPUTER DEVICE

摘要

An interrupt signal accepting device (10) controls two OSs, associates an OS which causes devices (130) and (131) sharing the same interrupt number to perform an interrupt processing with an interrupt priority inherent in the device, and controls an interrupt number priority conversion table showing the association between the interrupt number and the interrupt priority. Each device continuously outputs an interrupt request having the same interrupt number until the interrupt processing is completed. An interrupt controller (120) converts the interrupt number into the interrupt priority in accordance with the interrupt number priority conversion table when there is an interrupt signal from the device (130) or the device (131). An interrupt signal control unit (11) causes an OS in operation to perform an interrupt processing to change the interrupt priority of the interrupt number priority conversion table when the converted interrupt priority corresponds to an interrupt priority associated with the OS in operation. The interrupt signal control unit (11) halts the OS in operation and activates other OS when the interrupt priority does not correspond.