Computer system and abnormality detection circuit
First Claim
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1. 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.
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Abstract
A computer system includes multiple modules that perform communication via a bus, and abnormality detection circuits that monitor signals on the bus related to communication between the modules to detect a hang-up, wherein each of the abnormality detection circuits is arranged to correspond to a part of the multiple modules, and, when detecting the hang-up, generates and outputs a signal instructing reactivation only of the corresponding module.
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Citations
17 Claims
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1. A computer system, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An abnormality detection circuit which is included in a computer system, the computer system having a plurality of modules that perform communication via a first bus for detecting a hang-up for a corresponding module among the plurality of modules, 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, the abnormality detection circuit comprising:
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a detection circuit connected between the bus and the corresponding module configured to monitor signals on the bus related to communication between the plurality of modules to detect a hang-up of the corresponding module; and a signal generation circuit configured to, when the hang-up is detected by the detection circuit, issue a response to access requests from one or more of the plurality of modules, wherein 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; wherein the detection circuit detects the hang-up if no response from the corresponding module to a request continues for a predetermined period in the communication between the modules. - View Dependent Claims (14, 15, 16, 17)
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Specification