With the aid of a diagram, show how a cache?tag RAM is used to implement a direct?mapped cache memory and discuss the advantages and disadvantages of a direct?mapped cache over an associatively mapped cache.

What will be an ideal response?


The following diagram illustrates the cache tag RAM. When the cache is accessed, a line is selected. The set address (the higher?order bits of the address) are fed to the cache tag RAM to look at the corresponding tag. At the same time the line address is used to access the cache.



Computer Science & Information Technology

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Computer Science & Information Technology