Memory table look-up device and method

Details Memory table look-up device and method Memory table look-up device and method

1995-11-03

1998-05-19

Eng, David Y.

G06F 930

Patent

active

057548064

ABSTRACT:
A memory table look-up method for executing a table look-up instruction in an active program uses an instruction buffer executing device, a controller and a data register to output table look-up data from a memory to the data register. The method includes causing an instruction buffer executing device to execute a table look-up instruction obtained from the memory and pre-stored in the instruction buffer executing device in a first cycle to generate and output a table look-up signal, and to cause the controller to output a next instruction being an instruction next to the table look-up instruction in the active program from the memory to the instruction buffer executing device in response to the table look-up signal. The method further includes the step of causing the controller to generate a forbidding signal in a second cycle for latching the next instruction located in the instruction buffer executing device, and to generate and output a write-in instruction to the instruction buffer executing device for generating a write-in signal in order to output said table look-up data to the data register.

REFERENCES:
patent: 5561819 (1996-10-01), Gephardt et al.
patent: 5561821 (1996-10-01), Gephardt et al.
patent: 5623634 (1997-04-01), Liu

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