Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uunet!lll-winken!decwrl!shlump.nac.dec.com!delni.enet.dec.com
From: goldstein@delni.enet.dec.com (Fred R. Goldstein)
Newsgroups: comp.sys.ibm.pc
Subject: Suntac baby-286 memory upgrade?
Message-ID: <6870@shlump.nac.dec.com>
Date: 13 Dec 89 20:52:36 GMT
Sender: newsdaemon@shlump.nac.dec.com
Organization: Digital Equipment Corporation, Littleton MA USA
Lines: 22

I have a J. Random Clone, genus 286, store-brand species, that uses
a Suntac Baby-286 motherboard.  This is a fairly common cloneboard
(very recent vintage) that implements LIM4.0 EMS on the motherboard,
with a DIP switch that makes all memory above 640k either EMS or
expanded.  It's switchable 12/6 MHz and works quite nicely.  BUT

According to its manual (and this is all the store knows), there are
a half-dozen ways to populate it with memory.  Mine came with 1M,
and that's done using 8 44256 chips and a couple of parody :-) chips.
More than half of the memory area is vacant.  If you're to populate
the board with 2M or 4M, though, you use 411000 chips, NOT 44256s.
(I may have the numbers wrong, but my 1M config uses 4x256k chips
and the 2M/4M configs use 1x1M chips, which are a bit more common.)

I'm not real happy that upgrading means I have to swap out all the
existing memory.  Does anyone know if that board has any undocumented
options for adding memory beyond 1M without displacing the 44256s?
Thanks,
    fred
--------
No snappy signature.  Someday I'll figure out how this user agent
implements .sig files.