Microprogrammed information processing system having self-checki

Details Microprogrammed information processing system having self-checki Microprogrammed information processing system having self-checki

1980-01-25

1982-10-19

Malzahn, David H.

Excavating

G06F 1122

Patent

active

043553893

ABSTRACT:
An information processing system of the microprogram control type having a control storage is provided with an exclusive memory unit for storing only the address information of a microprogram stored in the control storage and an exclusive control circuit for reading a specific microprogram out of the control storage by the address information from the exclusive memory unit and executing the program read out. The exclusive control circuit operates when the information processing unit is an idle state to execute successively the micro-steps of the specified microprogram read out in accordance with the address information in the exclusive memory unit, thereby to verify the information processing unit.

REFERENCES:
patent: 3325788 (1967-06-01), Hackl
patent: 3696340 (1972-10-01), Matsushita
patent: 3909802 (1975-09-01), Cassarino, Jr. et al.
patent: 3953717 (1976-04-01), Rottier et al.
patent: 4212059 (1980-07-01), Sato et al.

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