Path: utzoo!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!pasteur!ames!ncar!gatech!rutgers!att!lzaz!lznv!psc
From: psc@lznv.ATT.COM (Paul S. R. Chisholm)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Use of expanded memory on System 2 Model 50
Summary: Oops, forgot about Windows/286 himem.sys
Keywords: How to?
Message-ID: <1410@lznv.ATT.COM>
Date: 15 Jul 88 19:44:16 GMT
References: <322@mruxd.UUCP> <1407@lznv.ATT.COM>
Organization: AT&T
Lines: 26

< "Would you buy a used operating system from these guys?" >

In article <322@mruxd.UUCP>, afd@mruxd.UUCP (A Dietz) writes:
> The model 50 has 1M on board, but DOS has access only to 
> 640K.  How do I get to the other 360K, designated as "expanded
> memory"?

In article <1407@lznv.ATT.COM>, psc@lznv.ATT.COM (Paul S. R. Chisholm)
(that's me) writes at great length about how unlikely it is that you're
going to be able to use that 360K as conventional memory.  Well, as
part of their Windows/286 (a.k.a. Windows 2.1) product, Microsoft is
distributing a device driver that lets you get an extra 64K of
conventional memory out of your extended (AT style, not LIM EMS)
memory.  This memory can be used by non-Windows applications.  PC Week,
July 11, 1988, p. 34:  "As implemented in Windows, the driver conflicts
with many existing memory management programs, including EMS emulators
and virtual-disk [RAM drive] utilities."

If all you needed was 704K total, and you're not using extended memory
for anything else, you're all set.

> A Dietz, Bellcore, Morristown, (ulysses, rutgers, bellcore)!mruxd!afd

-Paul S. R. Chisholm, {ihnp4,cbosgd,allegra,rutgers}!mtune!lznv!psc
AT&T Mail !psrchisholm, Internet psc@lznv.att.com
I'm not speaking for my employer, I'm just speaking my mind.
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