System for testing a microprocessor

Details System for testing a microprocessor System for testing a microprocessor

1990-10-31

1992-06-09

Beausoliel, Robert W.

Excavating

G06F 1100

Patent

active

051213931

ABSTRACT:
A system for testing microprocessors is formed as an integral part of the chip. The microprocessor includes an instruction register that is converted into a counter during a test sequence. The counter successively provides codes of test instructions to an integral operation device during the test sequence. The results of the operations performed by the operation device are communicated to a polynomial counter. At the end of the test sequence, the result in the polynomial counter is decoded to automatically determine whether the microprocessor is operating correctly or is defective.

REFERENCES:
patent: 4185190 (1980-01-01), Bottard
patent: 4598245 (1986-07-01), Groves
patent: 4823307 (1989-04-01), Melgara
patent: 4924469 (1990-05-01), Tamaru

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