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From: dewar@cs.nyu.edu (Robert Dewar)
Newsgroups: comp.lang.ada
Subject: Re: OS/2 COM Ports with Gnat 2.03
Date: 11 Mar 1995 22:39:19 -0500
Organization: Courant Institute of Mathematical Sciences
Message-ID: <3jtqd7$6cc@gnat.cs.nyu.edu>
References: <3jpn32$b1p@newsflash.concordia.ca>
NNTP-Posting-Host: gnat.cs.nyu.edu
Date: 1995-03-11T22:39:19-05:00
List-Id: <comp.lang.ada>

Chris O'Regan asks:

"   Does Gnat 2.03 for OS/2 have routines for programming the COM ports, or
should I do this in C and use the pragma interface?  Also, is there
documentation for the libraries in the gnatlib directory?"

No specific routines are supplied, and indeed the most reasonable thing
is to call the appropriate operating system services (in OS/2, you do not
typically fiddle directly with the COM ports, you use the system driver).

And to interface to these routines, use pragma Import, not Interface. GNAT
does implement Interface for backwards compatibility, but pragma Interface
is not part of Ada 95, and its use should be discouraged.