wiederholungssteuerverfahren and facility for a steuerprozessor

摘要

There is provided a technique which enhances the functions of a control processor exclusively used for the execution of a RAS function in an information processing apparatus with high reliability and which is effective for a retry process in the case of an error. This is achieved by providing a control storage circuit 3 for storing a micro- instruction for controlling the execution of a request for a process issued by another processing system in the information processing apparatus, a function circuit for executing the microinstruction, a read and correct circuit 5 for determining whether there is an error in the microinstruction to be executed by the function circuit and for correcting the data of the error portion, a retry control register 6 for rewriting the corrected microinstruction in the control storage circuit and for outputting an instruction for a retry at the execution of the request for a process and an auxiliary circuit for controlling the execution and retry operations on the request for a process. IMAGE