[comp.sys.ibm.ps2.hardware] Adding memory to a Model 30-286?

jmerrill@jarthur.claremont.edu (Generic User) (02/21/91)

Is it possible to upgrade the motherboard RAM on a PS/2 model 30-286?  In
the PC Lab here we have several of these machines, with 1 meg onboard each.
Windows is extremely cramped with the Novell drivers loaded, and we would
like to add memory to the motherboard, if possible.  The previous
management seems to have misplaced our manuals, so I can't RTFM.  It looks
like there are two banks of SIMMS between the expansion slots and the power
supply, but I don't know what size memory is in there now or whether it can
be upgraded.  Anyone?

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Jason Merrill				jmerrill@jarthur.claremont.edu

macphee@convex.COM (Scott C. Mac Phee) (02/21/91)

I checked at one time about adding memory to the 30-286: The motherboard
is able to accept 1 meg of RAM.  After that, you need to fill a slot.

Most any board that fits an AT will work.  Check the local dealerships.

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ss@sprite.Berkeley.EDU (Srinivasan Seshan) (02/22/91)

The 30-286 can take up to 4megs of RAM on the motherboard.  It can take either
1meg simms or 256k simms (however these are slightly different from the
standard simms, ie make sure you buy 30-286 simms, they are also slightly
more expensive).  The following memory configs are legal:

512k 	(2 256k)
1024k 	(4 256k)
2048k	(2 1m)
4096k	(4 1m)

No mistake above.  These are the only valid motherboard combinations.  You can't
do 1536k etc.


You can also add AT memory expansion cards.  However, look for short AT cards.
Full AT height cards (bigger than XT or PC case) will scrape the side
of the 30-286 cabinet possibly causing damage to your card, case, vertical
AT bus thing coming from the motherboard.



Srini Seshan
ss@joyride.Berkeley.EDU

oneel@heawk1.gsfc.nasa.gov ( Bruce Oneel ) (02/22/91)

Is it possible to upgrade the memory on the motherboard on the brain 
damaged model 25 also?

Thanks!!!

bruce

oneel@heasfs.gsfc.nasa.gov

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