Instruction processing circuit including freezing circuits...

Details Instruction processing circuit including freezing circuits... Instruction processing circuit including freezing circuits...

2005-06-20

2009-12-01

Huisman, David J (Department: 2183)

Electrical computers and digital processing systems: processing

Instruction decoding

C713S324000

Reexamination Certificate

active

07627741

ABSTRACT:
An instruction processing circuit includes an instruction decoder, with an instruction input coupled to an instruction source and a control output coupled to the control input of an execution circuit. The instruction decoder includes a predecoding circuit, multiple freezing circuits and multiple sub-decoding circuits. The predecoding circuit has an input coupled to the instruction input and outputs coupled to control inputs of the freezing circuits, which feed the respective parallel sub-decoding circuits. The predecoding circuit detects to which type of instruction a supplied instruction belongs, and controls, dependent on the detected type, to which of the sub-decoding circuits instruction information derived from the supplied instruction will be passed and to which of the sub-decoding circuits supply of instruction information derived from a previously supplied instruction will be frozen.

REFERENCES:
patent: 6202163 (2001-03-01), Gabzdyl et al.

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