Date: Sat, 8 Feb 2003 11:37:36 -0500
Message-Id: <200302081637.h18Gbax21760@envy.delorie.com>
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From: DJ Delorie <dj AT delorie DOT com>
To: djgpp AT delorie DOT com
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	(sjmccaug AT bluestem DOT prairienet DOT org)
Subject: Re: Generate real-mode 386 DOS executables?
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>  The question remains: is DJGPP really for MS-DOS? If so, then I
>  should be able to make 16-bit INT 21h DOS function calls. If I
>  cannot make such calls, it is really not DOS-compliant. So which is
>  it?

DJGPP programs only run on DOS-based systems.  They are DOS programs.
However, DJGPP's purpose is to build a layer between DOS and your
application such that your application is itself a 32-bit flat model
program.

You can make 16-bit dos function calls directly if you wish, but you
must then take responsibility for moving any data to/from memory that
DOS has access to.  DJGPP normally does that for you if you let it.