Patent ID: 8700835

Claim:
A computer system, comprising: a plurality of modules configured to perform communication via a first bus; and a plurality of abnormality detection circuits configured to monitor signals on the bus related to communication between the plurality of modules to detect a hang-up, wherein each of the abnormality detection circuits is connected between the first bus and a corresponding module; and a hazard module configured to connect with and receive hang-up detection signals from each of the plurality of abnormality detection circuits via a second bus; wherein when an abnormality detection circuit detects the hang-up, the abnormality detection circuit issues a response, via the first bus, to access requests from one or more of the plurality of modules, and the computer system is configured to monitor the hazard module to generate and output a signal instructing a reactivation only of the corresponding module while avoiding an initialization of the remaining plurality of modules based on the received hang-up detection signals via the second bus.