Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!apple!altos!gumby!jerry
From: jerry@gumby.Altos.COM (Jerry Gardner)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: DesqView 386 Problem
Message-ID: <4773@gumby.Altos.COM>
Date: 4 Apr 91 00:30:56 GMT
References: <4m.gk.p@rpi.edu>
Reply-To: jerry@altos.COM (Jerry Gardner)
Distribution: comp
Organization: Altos Computer Systems, San Jose, CA
Lines: 48

In article <4m.gk.p@rpi.edu> kudla@rpi.edu (Robert J. Kudla) writes:
>I'm running an original copy of DesqView 386 with manual and all, and
>yet I can't figure out how to get into this mode the manual refers to
>as "Virtual 8086 Mode" which should allow me to break the 640K
>barrier.  I have an IBM PS/2 Model 55SX with, I believe, 2M of RAM
>total (the DOS 4.01 MEM command shows 1.7M of EMS memory under QEMM,
>and 1.2M of extended memory with 0 of that free.... I can't figure
>that out either).  

You won't find anything in the manual about getting Desqview into 
virtual 8086 mode because it does it automatically.  Virtual 8086
mode allows an 80386 processor to run multiple 8086 sessions.  Each
virtual 8086 session looks, to applications, just like a real 8086,
i.e. it has a 1MB address space (640KB under DOS).

Therefore, Desqview 386 doesn't let you "break the 640K barrier" as far
as individual applications are concerned.  What is does do is let you
have multiple 640K applications running simultaneously.

>As it stands, I run one application (say, a terminal program) and when
>I go into the DEsqview menu to start another one it tells me there's
>not enough memory.  The memory status program shows "1736K of Common
>Memory" but only 506K of Conventional Memory when nothing but the
>status program itself is running.

If you have Desqview 386 you also have QEMM386.  Use QEMM's optimize
feature to put as many drivers, TSR's, etc, into high memory and out
of the lower 640.

>The manual mentions Virtual 8086 Mode in passing at the beginning and
>glosses over it for the rest of the manual.  How do I access it?

As I said, you don't access it explicitly.  Desqview/QEMM puts the
processor into virtual 8086 mode and manages it transparently to
your applications.

>By the way, please respond in email.  I don't actually read
>comp.sys.ibm.pc.misc.  Thanks....

Perhaps it you did read this newsgroup, you might understand how
Desqview works...


-- 
Jerry Gardner, NJ6A					Altos Computer Systems
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Internet: jerry@altos.com				San Jose, CA  95134
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