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What are the differences among direct mapping associative mapping and set associative mapping?
The differences among direct mapping and set-associative mapping :
Direct mapping : Each line in main memory maps onto a single cache line.
Set-associative : Each line in main memory maps onto a small (collection) set of cache line.
Direct mapping : A memory block is mapped into a unique cache line, depending on the memory address of the respective block.
Set-associative : A memory block is mapped into any of the line of a set. The set is determined by the memory address, but the line inside the set can be any one.
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JordanIn direct mapping, each block of main memory can only be mapped to one specific cache line. In associative mapping, each block of main memory can be loaded into any cache line. Set associative mapping is a combination of both, where each block of main memory can be mapped to a subset of cache lines rather than just one.
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