Method for recovering from error in a microprogram-controlled un

Details Method for recovering from error in a microprogram-controlled un Method for recovering from error in a microprogram-controlled un

1983-09-20

1986-01-21

Atkinson, Charles E.

Excavating

364200, 371 38, G06F 1100

Patent

active

045661030

ABSTRACT:
An erroneous microinstruction and related preceding microinstructions are subjected to a so-called retry operation so as to restore the microprogram-controlled unit and correct the error. The retry operation is carried out under an interlock mode, in which both detection and correction occur prior to processing for each microinstruction. At the same time, an address specifying a thus detected erroneous microinstruction is recorded. When the recorded address is next generated, the interlock mode is automatically entered for the erroneous microstruction only.

REFERENCES:
patent: 4112502 (1978-09-01), Scheuneman
patent: 4231089 (1980-10-01), Lewine et al.
patent: 4319356 (1982-03-01), Kocol et al.
patent: 4443849 (1984-04-01), Ohwada

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