Importance

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Abstract

Provided is a cache memory architecture which is two blocks wide and is made up of a map RAM, two cache data RAMs (each one word wide), and a selection system for selecting data from either one or both cache data RAMs, depending on whether the access is between cache and CPU, or between cache and main memory. The data stored in the two cache data RAMs has a particular address configuration. It consists of having data with even addresses of even pages and odd addresses of odd pages stored in one cache data RAM, with odd addresses and even addresses interleaved therein; and odd addresses of even pages and even addresses of odd pages stored in the other cache data RAM, with the odd addresses and even addresses interleaved but inverted relative to the other cache data RAM.

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First Claim