Data processing apparatus and method for executing a...

Details Data processing apparatus and method for executing a... Data processing apparatus and method for executing a...

2005-04-29

2008-10-14

Tsai, Henry (Department: 2184)

Electrical computers and digital processing systems: processing

Processing control

Branching

C712S215000, C712S007000

Reexamination Certificate

active

07437544

ABSTRACT:
A data processing apparatus and method are provided for executing a sequence of instructions including at least one multiple iteration instruction. The data processing apparatus comprises an instruction store for storing the sequence of instructions, and a processing unit for executing the sequence of instructions, the processing unit comprising at least a first processing path and a second processing path to enable at least two instructions of the sequence to be executed in parallel. When executing instructions in parallel, the first processing path executes an instruction which is earlier in the sequence than the instruction executing in the second processing path. The processing unit is operable when executing a multiple iteration instruction to allow a first iteration of the multiple iteration instruction to be executed in either the first processing path or the second processing path, but to cause all remaining iterations of the multiple iteration instruction to be executed in the first processing path. This provides a particularly efficient technique for executing the sequence of instructions.

REFERENCES:
Intel(R) Embedded Pentum(R) Processor Family, Developer's Manual, Dec. 1998.

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