| 摘要 |
PURPOSE:To generate a programmed prescribed interruption request, to discriminate the priority of the request and to attain control and variable processing of the priority of interruption processing by providing an interruption request controlling part and a priority discriminating part. CONSTITUTION:The outputs 51-53 of an interruption request controlling part 5 correspond to software interrupting instructions a-c respectively and outputs 54-56 correspond to hardware interrupting instructions a-c respectively. The software interrupting requests a-c are used as the programmed interruption requests Si and the hardware interrupting requests a-c are used as interruption requests Hi other than the requests Si. A priority deciding part 6 selects the most prior interruption request which is in the high level out of permitted interruption request signals 51-56 outputted from the control part 5 and outputs priority discriminating signals 61-66. The signals 61-66 are outputs corresponding to the signals 51-56 and discriminate and control the priority, so that the variable processing of the priority of interruption processing can be attained. |
