Electrical computers and digital processing systems: processing – Instruction decoding – Decoding instruction to accommodate plural instruction...
Reexamination Certificate
2004-12-02
2011-11-22
Ellis, Richard (Department: 2183)
Electrical computers and digital processing systems: processing
Instruction decoding
Decoding instruction to accommodate plural instruction...
C712S227000, C703S026000
Reexamination Certificate
active
08065504
ABSTRACT:
A microprocessor chip has instruction pipeline circuitry, and instruction classification circuitry that classifies instructions as they are executed into a small number of classes and records a classification code value. An on-chip table has entries corresponding to a range of addresses of a memory and designed to hold a statistical assessment of a value of consulting an off-chip table in a memory of the computer. Lookup circuitry is designed to fetch an entry from the on-chip table as part of the basic instruction processing cycle of the microprocessor. A mask has a value set at least in part by a timer. The instruction pipeline circuitry is controlled based on the value of the on-chip table entry corresponding to the address of instructions processed, the current value of the mask, the recorded classification code, and the off-chip table.
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ATI International SRL
Ellis Richard
Volpe and Koenig P.C.
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