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The Intel 80486 has an on-chip, unified cache. It contains 8 KBytes and has a four-way


organization and a block length of four 32-bit words. The cache is organized

into 128 sets. There is a single "line valid bit" and three bits, B0, B1, and B2

(the "LRU" bits), per line. On a cache miss, the 80486 reads a 16-byte line from main

memory in a bus memory read burst. Draw a simplified diagram of the cache and

show how the different fields of the address are interpreted.

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