| 摘要 |
PURPOSE:To make coordination relation flexible and cope with a variety of requests by providing a storage circuit for pieces of identification information corresponding to respective microinstructions and a register for information on coordination between identification information and various service functions. CONSTITUTION:Pieces of identification information 9 corresponding to microinstructions X and Y from an identification information varying circuit 10 are set to 01 and 10 respectively and other pieces of information 9 are set to 00. Then, a coordination information varying circuit 15 is used to set coordination information 14 in a coordinating register 13 and a request so that they meet requirements. A specific microprogram begins to be executed after said setting, and instructions 2 in a control circuit 1 are read out successively, and held in a register 5 and decoded and executed. Simultaneously, information 9 corresponding to an instruction X is read out of the storage circuit 8 and held in a register 11, whose contents become 10. Then, the coincidence between the information 9 and information 14 in the register 13 is detected and a service control circuit 12 generates a hardware error forcibly to start recording hardware state information.
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