ERROR CORRECTION METHOD IN MICROPROGRAM CONTROL SYSTEM

摘要

The unit includes a control storage for microinstructions. A control register stores an address for specifying the microinstruction register as tags. The two registers are in multistage connection. An error detection and correction circuit checks the validity of each microinstruction. A retry operation is performed for the related microinstructions including the detected erroneous microinstruction under an interlock mode, in which the erroneous microinstruction and the related proceding microinstructions are successively subjected to error detection and correction.