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From: nicholls@bcsaic.UUCP (Bill Nicholls)
Newsgroups: comp.sys.ibm.pc
Subject: Memory cache *and* zero wait state?
Message-ID: <20154@bcsaic.UUCP>
Date: 10 Feb 90 00:22:16 GMT
Distribution: na
Organization: Boeing Computer Services ATC, Seattle
Lines: 22


This is a second post to a larger distribution.
(does anybody read this group in "pnw" ?)


A local vendor is selling a 25MHz '386 system with

  1 Mb ram  '0' wait state
  32Kb cache memory

What's the point of having both?
Either I'm missing something, or the presence
of the cache should slow the system down.

Perhaps the cache returns data in one clock cycle
instead of two?  Doesn't seem likely.
Perhaps the memory is only eight bits wide,
that would be a waste.

William H. Nicholls                       - nicholls@atc.boeing.com
Boeing Defense & Space Group              - nicholls@ee.washington.edu
(let ((*standard-disclaimers* t)) ... )