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Message-ID: <5587DC97.6010503@yahoo.no>
Date: Mon, 22 Jun 2015 11:59:51 +0200
From: "Gisle Vanem (gvanem AT yahoo DOT no)" <djgpp AT delorie DOT com>
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To: djgpp AT delorie DOT com
Subject: Re: Detecting Windows NT in DJGPP
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Reply-To: djgpp AT delorie DOT com

Frank Sapone (emoaddict15 AT gmail DOT com) wrote:

> I was hoping maybe somebody knew of a quirk of using regs to check a value that NTVDM would only give back.

djgpp already has a check for the true-version. Look in
.\src\LIBC\DOS\DOS\getdos_v.c. Hence use something like:

   if (_get_dos_version(1) == 0x0532)
     puts ("NTVDM");

I.e. DOS 5.50.

-- 
--gv