Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!cs.utexas.edu!uunet!jwt!john
From: john@jwt.UUCP (John Temples)
Newsgroups: comp.sys.ibm.pc
Subject: Re: V86 mode in 386 machines
Message-ID: <450@jwt.UUCP>
Date: 26 Oct 89 15:16:16 GMT
References: <8910231849.AA21907@euler.Berkeley.EDU> <1457@crdos1.crd.ge.COM>
Reply-To: john@jwt.UUCP (John Temples)
Organization: John W. Temples, III -- Orlando, FL
Lines: 27

In article <1457@crdos1.crd.ge.COM> davidsen@crdos1.UUCP (bill davidsen) writes:
>|  In article <8910231849.AA21907@euler.Berkeley.EDU> ndeng@EULER.BERKELEY.EDU writes:
>|  |Is there any environment which may give a full 640K for DOS
>|  applications?
>|  
>I believe that with Desqview and QEMM I got something like 602000, give
>or take a bit.

On a monochrome 386 system, QEMM (WITHOUT DESQview) gives you 704K user
memory.  On a CGA system, QEMM gives you 736K.  You can also load your
device drivers and TSRs in high memory, above video memory.  On my 386
monochrome system with QEMM, CHKDSK under COMMAND.COM shows 664784
bytes of memory available out of 720896.  That leaves MORE than 640K
available user memory.  Unfortunately, QEMM doesn't provide that extra
memory if you've got a VGA or EGA based system.

>If you want a lot of memory for the app get a non-PC
>compatible which runs MS-DOS, such as the Tandy 2000, and you can have
>about 800k for the apps.

A less-incompatible solution would be to get a 286 based system with an
ALL Chargecard.  I believe you can get about 800K user memory by
letting the Chargecard relocate the video memory.  And you can turn off
the Chargecard any time, leaving you with a hardware-compatible system,
unlike the Tandy 2000.
-- 
John Temples -- UUCP: uunet!jwt!john