| 摘要 |
PURPOSE:To increase a processing speed by judging the occurrence of an urgent state through hardware and generating the 1st step of a specific microinstruction for urgent processing by setting a microinstruction register. CONSTITUTION:An overflow state is judged by a control circuit 5 through hardware to send out an interruption request signal or trap request signal to a request detecting circuit 6. A request detecting circuit 6 receives this interruption request signal or trap request signal and sends out an urgent processing command signal to a sequencer 4 and a master setting and master resetting control circuit 5. Consequently, the control circuit 5 supplies a master setting signal from its master setting control circuit 51 to registers 21 and 22 of a microinstruction register 2 to generate the 1st step of overflow processing in the microinstruction register 2.
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