Facility for Providing Interrupts Between Processors in a Multiprocessing Environment
Original Publication Date: 1988-Nov-01
Included in the Prior Art Database: 2005-Feb-15
This article describes a facility for use by processors within a multiprocessing environment to send interrupts to each other. In a multiprocessor environment, several processor cards reside on a common system bus. Each processor card has an independent processing unit (processor) which performs tasks. The system bus is used by the processor cards to communicate with various input/output (I/O) devices and for processor-to-processor (inter-processor) communication. Within a multiprocessor environment, it is often necessary for one processor to signal another processor. One way to provide this signalling is for one processor to interrupt another processor.