Snapshot arbiter mechanism

摘要

A method for servicing multiple interrupt requests for a central processing unit in a digital processor system. The method includes the following steps. First, storage locations (54) are provided for indicating at least some of one or more of the interrupt requests that are pending. The storage locations are loaded with indications of pending interrupt requests when the storage location is storing no pending interrupt request indications. Indications of pending interrupt requests are removed from the storage location when they are serviced. In implementations including preemption, indications of interrupt requests may be added to the storage location if such interrupt requests are of a priority higher than any interrupt request indication in the storage location. <IMAGE>