2. A set-associative cache consists of 64 lines, or slots, divided int

1.	2. A set-associative cache consists of 64 lines, or slots, divided into four-line sets. Main memory contains 4K blocks of 128 words each?Show the format of main memory addresses?Show the format of Cache memory addresses?
Answer» The CACHE is divided into 16 sets of 4 lines each. Therefore, 4 bits are needed to identify the set number. Main memory consists of 4K = 212 BLOCKS. Therefore, the set plus tag lengths must be 12 bits and therefore the tag length is 8 bits. Each block contains 128 words. Therefore, 7 bits are needed to specify the WORD.

2. A set-associative cache consists of 64 lines, or slots, divided into four-line sets. Main memory contains 4K blocks of 128 words each?Show the format of main memory addresses?Show the format of Cache memory addresses?

Answer»

The CACHE is divided into 16 sets of 4 lines each. Therefore, 4 bits are needed to identify the set number. Main memory consists of 4K = 212 BLOCKS. Therefore, the

set plus tag lengths must be 12 bits and therefore the tag length is 8 bits. Each block contains 128 words. Therefore, 7 bits are needed to specify the WORD.

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2. A set-associative cache consists of 64 lines, or slots, divided into four-line sets. Main memory contains 4K blocks of 128 words each?Show the format of main memory addresses?Show the format of Cache memory addresses?

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