Question: 1. What happens when the processor needs data and the block is not found in the cache and what term is used to identify this

1. What happens when the processor needs data and the block is not found in the cache and what term is used to identify this situation

Consider a simple 64-byte direct-mapped cache with 8 byte blocks. Assume addresses are 16bits. The cache is physically tagged. The processor has 16KB of physical memory.

Describe the relationship between the physical memory, the cache, and addresses used by the processor

What happens when the processor changes a block of data that is in the cache and what is the main issue?

Briefly explain the disadvantage of polling for I/O status, identify an alternative, and briefly explain why it is better.

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