| 摘要 |
PURPOSE:To make queuing unnecessary for the address development of the instruction following an inter-register(RG) transfer instruction, by executing this instruction in an advanced control part before an operation control part to quicken determination of RGs in the advanced control part. CONSTITUTION:In an advanced control part, the instruction code of an instruction RG1 is passed to an inter-RG transfer instruction detecting circuit 3; and if it is discriminated that this instruction is an inter-RG transfer instruction by the circuit 3, it is reported to an inter-RG transfer controlling circuit 5. The transfer source RG number of the RG1 is sent to a detecting circuit 7 for coincidence between the transfer source RG number and the RG number queued for determination, a control circuit 8 for RG determination queuing, a base register BR group 9 and in index register IR group 10. The RG number requiring determination queuing from the circuit 8 is reported to the circuit 7, and an address development control circuit 14 starts the address development. The registering suppression from the circuit 5 to the circuit 8 and inter-RG transfer of the BR group 9 or the IR group 10 are instructed. When a selecting circuit 19 receives the inter-RG transfer instruction, the RG side of the transfer source is selected, and pertinent data is written to the BR group 9 or the IR group 10. |
