Program skip operation control system

Details Program skip operation control system Program skip operation control system

1988-10-06

1990-05-15

Chan, Eddie P.

Boots, shoes, and leggings

3642631, 3642613, 3642617, 3642618, G06F 938, G06F 932

Patent

active

049263129

ABSTRACT:
A program skip operation control system used in a prefetched processor includes at least a program memory for storing a number of instructions, an instruction register associated to the program memory to fetch an instruction to be executed, and an instruction decoder receiving the content of the instruction register so as to generate a decoded instruction. An instruction address register is associated to the program memory to updateably prefetch an address of an instruction to be next fetched from the program memory to the instruction register, so that in the course of execution of the decoded instruction outputted from the instruction decoder, an instruction to be next executed is fetched from the program memory to the instruction register. The instruction decoder responds to a skip signal so as to invalidate the decoded instruction and generate a no-operation instruction for at least one cycle after a predetermined skip operation has been carried out.

REFERENCES:
patent: 4279016 (1981-07-01), Leininger et al.
patent: 4471433 (1984-09-01), Matsumoto et al.
patent: 4566063 (1986-01-01), Zolnowsky et al.
patent: 4591972 (1986-05-01), Guyer et al.
patent: 4709324 (1987-11-01), Kloker

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