| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve failure analysis efficiency by storing which program processing a CPU was performing before and after time of abnormality detection, and by knowing a state of that time later. <P>SOLUTION: Means for storing (tracing) an operation history of a bus is set up at each of duplicated buses for a duplex system controller for assisting failure analysis. Based on the means, efficiency improvement of failure analysis is realized by maintaining a bus state for a constant time before and after the time of abnormality detection and by performing comparison verification on the maintained duplicated bus information. <P>COPYRIGHT: (C)2012,JPO&INPIT |
