Date: Wed, 7 Jun 1995 11:27:57 -0700 (PDT) From: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com> To: jmb@kryten.Atinc.COM (Jonathan M. Bresler) Cc: esser@zpr.uni-koeln.de, dzerkel@feephi.phofarm.com, freebsd-hackers@freebsd.org Subject: Re: 2.0.5 ALPHA Message-ID: <199506071827.LAA02794@gndrsh.aac.dev.com> In-Reply-To: <Pine.3.89.9506071228.J9616-0100000@kryten.atinc.com> from "Jonathan M. Bresler" at Jun 7, 95 12:57:20 pm
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> > On Wed, 7 Jun 1995, Rodney W. Grimes wrote: > > > this was probably a simm built for 60nS operation but failed at final > > sort and was strapped to ID itself as 70nS. Some one noticed they > > had 60nS chips on them so though that it was really a 70nS module > > (see this all the time in the grey memory market :-(). If you want > > more details I can tell you how to ID the simm modules with an ohm > > meter. > > how? this can save a lot of hair pulling. > Sorry, that book is in a box some place between here and the new place, if some one has a simm module memory data book they can look up the ID pins (or better if you have the JEDEC simm standard) and measure between those pins and ground. There are currently 6 pins on a 72 pin simm defined to determine speed, single/double density and something else I can't recall. If no one gets this info out get back to me after June 15th when I am all set up again... -- Rod Grimes rgrimes@gndrsh.aac.dev.com Accurate Automation Company Custom computers for FreeBSD
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