VLSI Question:
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Suppose For a single computer processor computer system, what is the purpose of a processor cache and describe its operation?


the purpose of cache is to reduce the average time to
access the main memory, the operation is like that when the
CPU wants to access the data, it first check the cache, if
an entry can be found with a tag matching that of desired
data, CPU gets the data from cache directly, otherwise, the
data will be copied into cache for next access.

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