Electrical computers and digital processing systems: processing – Processing control – Mode switch or change
Reexamination Certificate
2007-03-13
2007-03-13
Coleman, Eric (Department: 2183)
Electrical computers and digital processing systems: processing
Processing control
Mode switch or change
Reexamination Certificate
active
10776751
ABSTRACT:
A pipeline microprocessor that distributes the instruction dispatching function between a main instruction dispatcher and dispatching logic within a plurality of execution units is disclosed. If the main instruction dispatcher requests load data from a data cache that indicates the data is unavailable, the instruction dispatcher provides to the appropriate execution unit the load instruction (without the load data), a tag (also known by the cache) uniquely identifying the unavailable data, and a false data valid indicator. The cache subsequently obtains the data and outputs it on a bus along with the tag. The dispatching logic in the execution unit is monitoring the bus looking for a valid tag that matches tags of entries in its queue with invalid data indicators. Upon a match, the dispatching logic obtains the data from the bus and subsequently dispatches the instruction along with the data to a functional unit for execution.
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Hooker Rodney E.
Johnson Daniel W. J.
Loper Albert J.
Coleman Eric
Davis E. Alan
Huffman James W.
VIA Technologies Inc.
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