Newsgroups: comp.os.msdos.apps
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!casbah.acns.nwu.edu!halpern
From: halpern@casbah.acns.nwu.edu (David Halpern)
Subject: Re: frustration with memory problems (LONG)
Message-ID: <1991Apr15.134112.11863@casbah.acns.nwu.edu>
Organization: Northwestern University
References: <31945@usc> <8430@umd5.umd.edu>
Date: Mon, 15 Apr 1991 13:41:12 GMT
Lines: 39

In article <8430@umd5.umd.edu> bchin@umd5.umd.edu (Bill Chin) writes:
>In article <31945@usc> logan@neuro.usc.edu (Christy Logan) writes:
>>[some parts of the description removed]
>>Sigmaplot seems to think there is 115K of memory available.  
>>Another program I run, CSS (a statistical package) runs all right
>>but thinks there is 365K of memory available.  Why the difference?  
>>But more importantly, why can't Sigmaplot find/use the memory?  
>>What good is 4M if my programs can't use it?  
>
>Well, you're caught with the difference between extended and 
>conventional memory.  First off, SigmaPlot 4.0 (that's the version
>I had to deal with) likes lots of conventional memory... the stuff
>below 640k.  The amount of memory available is shown with the "mem"
>command under DOS 4.0x.  The amount returned by CSS and SigmaPlot
>is the amount left after the respective programs have loaded, ie.
>this is data space left.  SigmaPlot likes to have ~540k of 
>conventional memory free before it loads.  A 100kb of expanded memory
>helps too. 
>
I would like to remind you that there is now version 4.1 of
sigmaplot.  I don't have the upgrade yet but Jandel  says that this
version uses around 490K of conventional memory (<50 K than 4.0)and uses both
expanded and extended memory, as much as your computer has instead of just
64k of expanded memory. It is also easier using this version with
windows 3.1 (the real windows version will come out in the fall, that's
what I've been told by Jandel).
There are some other new features which I think make the $50 upgrade 
worthwhile.

David Halpern
Telephone: (708) 491-4308
Office Location: TECH B426 (Center for multiphase flow)
Address:  Biomedical Engineering Department
          Northwestern University
	  Evanston IL 60208

e-mail:halpern@casbah.acns.nwu.edu