Electrical computers and digital data processing systems: input/ – Interrupt processing – Interrupt queuing
Reexamination Certificate
2007-02-20
2007-02-20
Perveen, Rehana (Department: 2112)
Electrical computers and digital data processing systems: input/
Interrupt processing
Interrupt queuing
C710S260000
Reexamination Certificate
active
10970239
ABSTRACT:
An interrupt handling technique is provided that may allow for sharing level sensitive interrupts in systems where interrupts are message based, i.e., edge triggered. An interrupt input unit is provided for receiving level sensitive interrupt requests and generating request occurrence signals therefrom. An edge detection unit generates start signals for edge triggered interrupt messages on the basis of the request occurrence signals. An interrupt termination detection unit receives termination signals each indicating that an interrupt routine relating to a previous edge triggered interrupt message has terminated. The interrupt input unit is controlled to output a request occurrence signal in response to a received termination signal if a previously received level sensitive interrupt request is still active. That is, a second edge triggered interrupt message may be generated.
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Barth Frank
Kunjan Thomas
Winkler Jörg
Advanced Micro Devices , Inc.
Kivlin B. Noäl
Knoll Clifford
Meyertons Hood Kivlin Kowert & Goetzel P.C.
Perveen Rehana
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