| 摘要 |
PURPOSE:To execute effectively an interruption processing in a short time by comparing an allowable waiting time inputted from the outside with a time to be waited for from the time point when an interruption is generated from the outside, and determining a priority degree of an interruption request. CONSTITUTION:Plural interruption request signal on interruption request signal lines 5-7 and the respective allowable waiting time data on allowable waiting time data signal lines 8-10 are inputted to an input part 1, an elapsed time from the time point when an interruption request from the outside is generated is counted by an interruption priority degree determining part 3, its count value, namely, a time which is waited for is compared with an allowable waiting time data, a dynamically high interruption priority degree is given to a channel in which the time to be waited for is exceeded the allowable waiting time, and its channel number is informed to the outside through an output part 4. |
