Method for recovering from error in a microprogram-...

Details Method for recovering from error in a microprogram-... Method for recovering from error in a microprogram-...

G - Physics

06

F

354/226

G06F 11/14 (2006.01)

Patent

CA 1200909

METHOD FOR RECOVERING FROM ERROR IN A MICROPROGRAM-CONTROLLED UNIT ABSTRACT OF THE DISCLOSURE An erroneous microinstruction and related preceding microinstructions are subjected to a so-called retry operation so as to restore the microprogram-controlled unit from the error. The retry operation is carried out under an interlock mode, in which both detection of the erroneous microinstruction and correction for each microinstruction are achieved. At the same time, an address for specifying the thus detected erroneous microinstruction is recorded. When an address the same as the recorded address is next generated, the recovery from the error is performed only for the erroneous microinstruction under the interlock mode.

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