Apparatus and method for controlling instruction flow by using a

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395393, 395591, 395729, 395731, 3642287, 3642633, 3642656, 377 69, 377 77, G06F 1314, G06F 922, G06F 930

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active

056896735

ABSTRACT:
An instruction flow control circuit controls the selection and execution of instruction signals in a microprocessor having multiple execution units that can execute plural instructions at one time. The instruction flow control circuit compares a number of signals indicating how many execution units are available with a number of signals indicating how many execution units are required. The circuit is a matrix of transmission gates which propagate signals through, or shift signals between, various signal paths for available resources, depending on the signals requesting the executing units. A number of output gates suppress the execution of instruction signals where an execution unit is requested but none are available.

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