System by determining if all multiple tasks were processed normally

摘要

In a method for detecting malfunction in microcomputer system, in which a given job is processed in a multiple task processing manner, it is discriminated whether or not each of tasks was executed normally after the each execution thereof, and each count of counters provided for all of the tasks except for a prescribed task is changed in response to result of the discrimination. Each count of all counters is checked at the time of the execution of the prescribed task to determine whether or not all of the tasks were executed normally.