Apparatus and method for storing interrupt source information in

Details Apparatus and method for storing interrupt source information in Apparatus and method for storing interrupt source information in

1996-02-23

1999-05-18

Sheikh, Ayaz R.

395736, 395737, 395309, G06F3/00

Patent

active

059058986

ABSTRACT:
A programmable interrupt controller is provided for use in computer systems including one or more CPUs. The programmable interrupt controller includes an interrupt request interface, a storage device, and at least one processor interface having an interrupt nesting buffer. An interrupt request identification code is assigned to each interrupt request and stored in the nesting buffer. The interrupt request identification codes used to reference the interrupt requests are stored in order of their priority. Each nesting buffer need have only a number of entries equal to the number of priority levels.

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