Path: utzoo!utgpu!watmath!uunet!wuarchive!gem.mps.ohio-state.edu!ctrsol!emory!skeeve!bagend!jan
From: jan@bagend.UUCP (Jan Isley)
Newsgroups: unix-pc.general
Subject: Re: .5 + .5 + .5 + 1.5 = 2.0 ?
Message-ID: <14@bagend.UUCP>
Date: 27 Oct 89 04:50:24 GMT
References: <4224@itivax.iti.org> <10383@cbnews.ATT.COM> <388@msdrl.UUCP> <1685@mtunb.ATT.COM>
Reply-To: jan@bagend.UUCP (Jan Isley)
Organization: 1 BagShot Row, the Shire
Lines: 25

In article <1685@mtunb.ATT.COM> jcm@mtunb.UUCP (was-John McMillan) writes:
>In article <388@msdrl.UUCP> elliston@msdrl.UUCP (Keith Elliston) writes:
>>a bunch of 256k dips (150 ns) from some Macintosh memory upgrades that are
>>just dieing to jump into my unixpc.

What?  Every Mac I have seen, which is quite alot, has SIMMS, not DIPS.

>	Just a note: the demands of the 3B1/7300 are such that
>	SOME generic chips malfunction.  Fujitsu and Fairchild
>	are fine, as I recall, but others may fail.
>	Run the RAM test diagnostics.
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Yes, yes, dozens of times, yes!  It may fail after passing the diagnostics
the first hundred times!  I have seen it happen more than once.  Get them
suckers good and hot and put them in the test loop overnight.

I have seen many motherboards with TI, Motorola, and Hitachi 256k chips.
I have successfully used many (thousands each) TI, Motorola, and Samsung
256k 120ns chips in UNIX-PCs with 0 failures.  150ns chips seems to be
harder to find than the 120ns variety.

The only ones I have seen fail were Fujitsu. ( 3 out of many thousands )

-- 
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