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From: scholes@snoopy.Colorado.EDU (SCHOLES MARTIN LEE)
Newsgroups: comp.sys.ibm.pc
Subject: Re: 386 Memory question (simms)
Message-ID: <21758@boulder.Colorado.EDU>
Date: 1 Jun 90 04:35:58 GMT
Article-I.D.: boulder.21758
References: <5923@buengc.BU.EDU> <4922@plains.UUCP> <3873@jato.Jpl.Nasa.Gov> <7374@fy.sei.cmu.edu>
Sender: news@boulder.Colorado.EDU
Reply-To: scholes@snoopy.Colorado.EDU (SCHOLES MARTIN LEE)
Organization: University of Colorado, boulder
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In article <7374@fy.sei.cmu.edu> bwb@sei.cmu.edu (Bruce Benson) writes:
>In article <3873@jato.Jpl.Nasa.Gov> kaleb@mars.UUCP (Kaleb Keithley) writes:
>
>>required to do this.  That is why you can put 2MB at a time into SX machines,
>>but must put 4MB into a DX.  Or 512KB or 1MB if you're using 256K SIMMs.
>
>Unless of course your board manufacturer changes the rules via its own
>implementation.  My Mylex board (with DX) can be configured as 1,2,4, or 8 Mb
>using 256K, 256K, 1Mb, 1Mb, simms respectively.  No other combinations are
>
>>Netiquet reminder: If you don't really know, then don't post.

  Excuse me if this has been covered, or I'm misunderstanding what exactly
was said here, but it seems to me Bruce made Kaleb's point for him.
It would appear that Bruce's DX box allows one or two banks of FOUR AND ONLY
FOUR simms, as long as all of the simms are of the same size.  One bank of
256's is 1 meg, 2 banks 2 meg.  One bank of 1 meg simms is 4 megs, while 2
yields 8 megs.  I have seen many DX motherboards which take this approach,
which lies well within Kaleb's "rules."
                   scholes@snoopy.colorado.edu