Data processing system for preventing machine stoppage due to an

Details Data processing system for preventing machine stoppage due to an Data processing system for preventing machine stoppage due to an

1983-12-15

1986-06-10

Fleming, Michael R.

Excavating

371 12, 371 18, G06F 1516

Patent

active

045947104

ABSTRACT:
A data processing system comprising an instruction control unit for controlling system operation, a storage control unit for storing data used for the system operation, and a machine check interruption portion for carrying out a machine check interruption when an error occurs during the system operation. The instruction control unit has a system control register group for storing system control data. The storage control unit has a copy register group for storing data copied from the system control data. The instruction control unit further comprises a register save state portion for copying the contents stored in the system control register group into the copy register group during the machine check interruption when an error occurs in the copy register group during the system operation. In this manner, a machine stop due to an error only in the copy register group, is prevented.

REFERENCES:
patent: 3229251 (1966-01-01), Homan
patent: 3757302 (1973-09-01), Pollitt
patent: 4307453 (1981-12-01), JuLasz et al.
patent: 4318172 (1982-03-01), Yamada et al.
patent: 4493035 (1985-01-01), MacGregor et al.

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