Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!think.com!linus!linus!mwunix.mitre.org!petroski From: petroski@mwunix.mitre.org (Frank Petroski) Newsgroups: comp.sys.apple2 Subject: Re: What mem.chips go in the ZIP cache? Message-ID: Date: 12 Jun 91 01:41:02 GMT References: <1991Jun10.231828.16904@risky.ecs.umass.edu> <1991Jun11.040640.3827@nntp-server.caltech.edu> Sender: news@linus.mitre.org (News Service) Organization: The MITRE Corporation, Bedford MA Lines: 23 Nntp-Posting-Host: mwunix.mitre.org toddpw@nntp-server.caltech.edu (Todd P. Whitesel) writes: >giovin@medr3.ecs.umass.edu (Rocky J Giovinazzo) writes: >>Could someone with a ZIP please tell me exactly what chips are in his/her >>cache? I can see from the A+/Incider advertisement that "MOSEL >>MS6264AL-70PC 8910K" are used in a pair apparently for an 8k cache. >>I am especially interested in what chips can be used to form a 32k or >>64k cache. >The important numbers in the about are the 6264 (means 8K SRAM) and the 70 >(means 70ns access time). To get a 16K cache configuration you buy two more >chips and plug them in (don't forget to set the DIP switches). >For 32K or 64K configurations, the number is 62256 (32K SRAM). Getting these >faster than 100 ns (which is OK for 8 mhz CPUs) is not easy. You might be able >to find 80 ns chips in a mail order catalog. > ... more stuff about patronizing zip helpers I take it one must yank out the 8K SRAMS and replace them with the 32K SRAMS?