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.
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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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