Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!lll-winken!aunro!ersys!davem
From: ersys!davem@nro.cs.athabascau.ca (Dave McCrady)
Newsgroups: comp.os.msdos.apps
Subject: Re: QEMM, etc Recommendation Sought
Message-ID: <Z158y3w164w@ersys.uucp>
Date: 22 Mar 91 18:54:10 GMT
References: <1991Mar21.173016.27609@ssd.kodak.com>
Organization: Edmonton Remote Systems, Edmonton, AB, Canada
Lines: 34

wieser@bissun.kodak.com (Jim Wieser) writes:

> I have a 386 machine and use PC-NFS over ethernet to
> connect to a Sun host. I do development with Microsoft
> C and I don't have enough conventional memory to run the
> debugger with PC-NFS installed. I have heard that QEMM
> will allow you to move TSRs to extended/expanded memory.
> Can you move the device drivers from your config.sys into
> extended/expaned memory as well?
> 

  Extended, no.  Expanded, yes.

  QEMM goes out and looks at High RAM (the area between 640k and 1 Mb),
where such things as your video memory, BIOS ROMs, Hard Disk BIos ROM and 
network card buffer memory and so on live.   It determines which chunks 
of this address space are available, maps expanded memory into these 
areas, and then stuffs them full of such things as DOS buffers, drivers, 
the EMS page frame, TSRs and so on.

  On my '386, about 57k of such code gets loaded high.  Your mileage will
vary, depending on what TSRs and drivers you are using.  

  If you don't need video graphics, Quarterdeck also includes a utility 
to let you include an extra 64-92k in conventional RAM, either from EMS 
or directly accessing the memory on an EGA/VGA card.

  Having said all that .. I guess the short answer to your question is 
yes ...  IF your machine has expanded memory.  Extended memory can't be
mapped to high ram.

   Dave McCrady                 |  ersys!davem@nro.cs.athabascau.ca
+1 403-454-4054 (voice)         |  Disclaimer? Who needs a disclaimer?
+1 403-454-6093 (public USENET) |  I >own< the joint.