Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Patent
1997-09-25
2000-01-25
Wright, Norman Michael
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
714 28, 714 43, G06F 1100
Patent
active
060188073
ABSTRACT:
A method and apparatus for determining if contention exists in a simulated electronic circuit due to multiple simulated drivers contending for the same simulated bus. A contention detection function counts the number of simulated drivers on the simulated bus which are active. If the number of active simulated drivers is greater than one, then an error message is generated reporting contention. The invention is suitable for computer implementation and is particularly well suited for simulation of an integrated circuit. A conversion function can be applied to translate the output of the simulated drivers into a format suitable for processing by the contention detection function and can also retranslate the output of the resolution function into a format suitable for further processing in the simulated electronic circuit. The active state of a simulated driver can be indicated by either a predetermined high voltage level or a predetermined low voltage level. The method and apparatus are capable of detecting where contention arises when two or more active simulated drivers each output the same voltage level, as well as when two or more active simulated drivers output different voltage levels. The method and apparatus can also detect the presence or absence of a "turn around" clock cycle.
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Micron Electronics Inc.
Wright Norman Michael
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