Method and apparatus for detecting potential lock-up conditions in a video graphics controller
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United States of America Patent
Stats
-
Nov 16, 2004
Grant Date -
Sep 25, 2003
app pub date -
Jan 4, 2002
filing date -
Jan 4, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Certain accesses by a processor to a video graphics controller may cause concurrent accesses by a remote management controller to cause the video graphics controller to lock up. To detect potential lock-up events, the remote management controller snoops the bus to determine whether the processor is performing a type of access that could lead to a potential lock-up condition. If so, the remote management controller ceases accessing the bus until the video graphics controller is in an available state.
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