Importance

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Abstract

An information control pipeline (13) parallels the processor's instruction pipeline (3), contains digital control information in respect of the instruction placed in the instruction pipeline and accompanies that instruction until all component operations prescribed within the instruction have been executed. When at the end of the pipeline, the instruction is presented for execution to a respective functional execution unit (7) of the processor, the respective functional execution unit accesses and uses the control information as a condition to instruction execution. Depending upon the processor, the control information may contain one or more bits, referred to as enable bits, as may be set enabled, indicating that an associated operation in the instruction is to be executed, or by software set disabled, indicating that the associated operation is masked, such as by an exception handler (9) when returning from a resolved exception.

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First Claim