How to know which memory block is stored in which cache block?
Store block data and block address
Only need high-order bits: tag
What if no data in a cache block?
[...]: 1 = present, 0 = not present
Initially 0
Answer
Valid bit
Question
Tags and valid bits
How to know which memory block is stored in which cache block?
Store block data and block address
Only need high-order bits: tag
What if no data in a cache block?
[...]: 1 = present, 0 = not present
Initially 0
Answer
?
Question
Tags and valid bits
How to know which memory block is stored in which cache block?
Store block data and block address
Only need high-order bits: tag
What if no data in a cache block?
[...]: 1 = present, 0 = not present
Initially 0
Answer
Valid bit
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Open it pan> Tags and valid bits How to know which memory block is stored in which cache block? Store block data and block address Only need high-order bits: tag What if no data in a cache block? Valid bit: 1 = present, 0 = not present Initially 0 <span>