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From: cadsi@ccad.uiowa.edu (CADSI)
Newsgroups: comp.os.msdos.programmer
Subject: Re: Need help on unix->dos port
Message-ID: <1991May1.164021.28149@ccad.uiowa.edu>
Date: 1 May 91 16:40:21 GMT
References: <1991May1.091701@ecn.purdue.edu>
Organization: CAD-Research, U. of Iowa, Iowa City, Iowa
Lines: 26

From article <1991May1.091701@ecn.purdue.edu>, by kudva@ecn.purdue.edu (Gautham K. Kudva):
> I've developed a C program on unix (Sun SPARC 1) that I need to port to
> DOS. The problem is that this program allocates large structures, and 
> the total memory requirements exceed 1Mb at times. Is there any way that
> I can get over the 640Kb limit of DOS without altering my code too much?
> I don't have much experience with the PC, so I'd like to avoid a lot of
> hacking if possible. I read an ad. in the BYTE magazine for something 
> called the "DOS extender" which claims to get over the 640Kb limit. Has
> anyone used this software? In terms of ease of use, applicability etc.,
> is it worth the $1000 or so they are asking for it? 
> 

I have used the Phar Lap extender extensively.  It works well.  Problem
is, if you plan to distribute your program, you'll pay a healthy price
for the runtime version of the extender.  There is an alternative.  Ergo
Systems claims NO license fees and/or royalties.  I've not used Ergo's,
but I after my costs of Phar Lap, I kind of wish I did.  There is another
player now - the Phar Lap 286 extender.  It extends MS 6.0 code to allow
multi-segment allocations.  This might be a good idea for you, since
the 386 compilers will only generate code to be run on a 386.

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|Tom Hite					|  The views expressed by me |
|Manager, Product development			|  are mine, not necessarily |
|CADSI (Computer Aided Design Software Inc.	|  the views of CADSI.       |
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