Author: Gian-Carlo Pascutto
Date: 10:05:09 06/24/02
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On June 24, 2002 at 10:30:26, Robert Henry Durrett wrote: >This addresses half the problem. What if the microprocessor wishes to WRITE >something. Why not write it directly to a huge cache and bypass RAM entirely? >If you had extremely large caches, couldn't RAM be dispensed with entirely? Writing to a cache is somewhat different. I believe most caches work by writing both to the cache and to the RAM. Remember that when writing, you don't actually need to wait until the data is written out before you can do anything else, so there is no 'delay' in writing to the actual RAM. However it's usually good to assume that something that was just written may be read in again soon, so it makes sense to already have a copy in the cache handy. -- GCP
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