Four-way set associative cache mapping

Four-way set associative cache mapping is a cache mapping technique that combines aspects of direct mapping and fully associative mapping. It divides the cache into a set of smaller sub-caches, each of which can store multiple blocks. In this case, each set contains four cache blocks.

The main idea behind four-way set associative mapping is to provide a compromise between the simplicity of direct mapping and the flexibility of fully associative mapping. It aims to reduce cache conflicts and improve cache hit rates compared to direct mapping, while still maintaining reasonable hardware complexity.

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