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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

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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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>

Original toplevel document (pdf)

owner: pavestonelaboringuntitled - (no access) - 05 Cache.pdf, p17

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