Interrupt pre-emption and ordering within a data processing...

Details Interrupt pre-emption and ordering within a data processing... Interrupt pre-emption and ordering within a data processing...

2006-07-18

2006-07-18

Cerullo, Jeremy S. (Department: 2112)

Electrical computers and digital data processing systems: input/

Interrupt processing

Interrupt prioritizing

C710S263000

Reexamination Certificate

active

07080178

ABSTRACT:
A data processing system nested interrupt controller24responsive to priority level values28, 30associated with respective interrupt handling programs to control the execution of those interrupt handling programs. The priority level values have a first portion28which controls whether or not a pending interrupt handling program will pre-empt an already active interrupt handling program and a second portion30which controls which of a plurality of pending interrupt handling programs will be executed next when they share the same value for the first portion of their priority level value.

REFERENCES:
patent: 4075679 (1978-02-01), Christopher et al.
patent: 6295553 (2001-09-01), Gilbertson et al.
patent: 6539448 (2003-03-01), Deng
patent: 6578064 (2003-06-01), Saito et al.
patent: 6618780 (2003-09-01), Popat

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