Data processing system having pipeline arithmetic/logic units

Details Data processing system having pipeline arithmetic/logic units Data processing system having pipeline arithmetic/logic units

1986-07-24

1988-11-08

Smith, Jerry

Excavating

364200, G06F 1100

Patent

active

047837837

ABSTRACT:
A data processing system includes a multistage pipeline arithmetic/logic operation unit for implementing an arithmetic or logic operation for sets of element data sequentially and storing operational results sequentially in a memory using a single instruction. Check information indicative of the presence or absence of a fault occurring in each stage of the pipeline operation unit is moved in synchronism with the advancement of stages of the pipeline operation unit. A request control unit for storing the operational result in the memory suppresses the storing of the operational result in the memory if check information indicates a fault of the operational result which is being stored in the memory. The request control unit issues storage requests, which are counted by a counter. The counter indicates the number of elements stored normally in the memory.

REFERENCES:
patent: 3274564 (1966-09-01), Binder
patent: 3564506 (1971-02-01), Bee
patent: 4414669 (1983-11-01), Heckelman

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