Circuit for selecting interrupt requests in RISC microprocessors
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United States of America Patent
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Feb 17, 2004
Grant Date -
N/A
app pub date -
Apr 30, 2001
filing date -
Apr 30, 2001
priority date (Note) -
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Abstract
An apparatus and method for prioritizing interrupt requests in a RISC processor. By utilizing hardware to prioritize the requests, processor time is reduced. The acknowledge signal from a priority resolve circuit selects the given service routine entry to branch instruction generating circuit. A lower priority service routine can be interrupted by a higher priority request.
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