| 摘要 |
<p>PURPOSE:To simplify a program and to increase the response speed of an interruption by controlling a multiplex interruption to another interruption under a vector interruption process based on the grant/inhibit information prepared to other interruptions set previously on a vector table. CONSTITUTION:An interruption controller 7 is provided together with a decoder 12 which latches and decodes a part of the vector table contents outputted from a ROM 2 at occurrence of a vector interruption, and the AND gates 8 - 11 which input the outputs of the interruption request flags 13 - 16, the interruption grant flags 17 - 20, and the decoder 12 respectively. Then the head address of an interruption process program is stored in a vector table together with the interruption control information used when another interruption occurs during an interruption process of a certain interruption. The grant or the inhibition is controlled to each interruption based on the interruption control information. As a result, the response speed is increased for the interruption process and the individual control of programs is simplified.</p> |
