From: "John M. Aldrich" <fighteer AT cs DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Problems with "system()"
Date: Fri, 24 Jan 1997 19:56:54 -0800
Organization: Two pounds of chaos and a pinch of salt
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References: <5ca9ji$f8j AT urca DOT nce DOT ufrj DOT br>
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To: djgpp AT delorie DOT com
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Antonio Carlos Moreirao de Queiroz wrote:
> 
> Some programs crash: an example is the Borland C IDE.
> Other programs do not load drivers that they need and exit: examples are
> all the programs compiled in protected mode with Borland Pascal 7.0.
> 
> Is this a bug?

The DPMI hosts used by DJGPP and by Borland are not 100% compatible; in
fact they are seldom as much as 50% compatible.  One of the biggest
problems is that Borland likes to run in 16-bit DPMI, which causes all
sorts of nasty conflicts with DJGPP's 32-bit DPMI.

There is no real solution to this problem, because the DPMI spec
specifically states that 16 and 32-bit DPMI are not compatible.  In
32-bit DPMI, the DOS4GW extender that many commercial apps use is a
semi-crippled DPMI host that has major problems working with
cwsdpmi-based programs.

The best workaround is to simply stop using the Borland programs.  For
the IDE, you can substitute RHIDE 1.1 (v2apps/rhide11b.zip), which is a
Turbo C-style IDE written specifically for DJGPP.  For Pascal, you can
download the GPC GNU Pascal compiler (v2gnu/gpc20b.zip).  It has some
significant differences from Borland Pascal, but for the most part you
can work around these.

Hope this helps!

-- 
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| John M. Aldrich, aka Fighteer I |        fighteer AT cs DOT com          |
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