TRACE MODE FOR CACHE MEMORY SYSTEM
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United States of America Patent
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N/A
Issued Date -
Jun 9, 2011
app pub date -
Sep 24, 2010
filing date -
Sep 25, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A cache, including a cache memory, is configurable to operate in a cache mode and a trace mode. When the cache is operating in the cache mode, the cache memory stores a copy of a portion of data that is stored in another memory external to the cache, and a received data access request is processed by retrieving a copy of a portion of data identified in the received data access request from the cache memory (if the cache memory stores a copy of the portion of data), or by forwarding the data access request to a data access request processing means external to the cache (if the cache memory does not store a copy of the portion of data). When the cache is operating in the trace mode, data access requests received by the cache are monitored and information relating to a received data access request is captured and stored in the cache memory.
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