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Suppose a 1024-byte cache has an access time of 0.1 microseconds and the main memory stores...

Suppose a 1024-byte cache has an access time of 0.1 microseconds and the main memory stores 1 Mbytes with an access time of 1 microsecond. A referenced memory block that is not in the cache must be loaded into the cache and the reference started again.

Answer the following questions:

i. What is the number of bits needed to address the main memory?

ii. If the cache hit ratio is 95%, what is the average access time for a memory reference?

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