Actually Larry answered his own question.
> > > In matched pairs, they test okay....


Since the RAM sticks work properly in their respective PAIRS, this points
very clearly to a vendor/model problem.  Many systems will not work with RAM
modules from different makers.

Jim Meagher
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----- Original Message -----
From: Paul Wittry <[log in to unmask]>

> ---Reply to mail from Dave Gillett about [PCBUILD] Memory mess---
>
> > On 15 Aug 99, at 10:53, Larry Atlow wrote:
> >
> >> I'm having a problem that's new to me.  A motherboard that doesn't
> >> recognize or report memory modules at their correct size.  I added two
> >> new 16MB (4x32) FPM, 60NS to a system which already had a pair.  At
that
> >> point, the system reported 32MB at POST.  Pulling out one of the new
> >> SIMMs yielded 40MB instead of 48.  Pulling the existing SIMMs and
> >> installing just the new ones yielded 32.  Adding one of the old ones
> >> gave me 40 instead of 48 again.  Installing the second original SIMM in
> >> the fourth slot again put me back up to 48MB.  Individually, all of the
> >> chips test okay.  In matched pairs, they test okay.  I'm not aware of
> >> any CMOS settings that should affect how the memory is recognized.  Is
> >> it a SIMM compatibility problem, bad memory slot(s), a possible jumper
> >> setting, or something else?  Unfortunately, I don't have the manual for
> >> the system.  Any assistance greatly appreciated.
> >>
> >> MOTHERBOARD SPECS:
> >> OEM: GemLight
> >> Chipset: SiS-496-497/A/B
> >> BIOS: Award v4.50PG
> >> BIOS Version: 40-0205-2A4IBG39-V2.05
> >
> Hello,
>
> This appears to me to be a "jumper/configuration". If the manual is
> missing, try the manufacturer's website. Keep in mind that some 486 class
> mainboards, will not configure for more than 32MB of RAM.
>
> Hope this helps,
>
> -ppw3
>
> ---End reply---
> --
>
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