Date: Fri, 22 Dec 2000 17:38:43 +0200
From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
Sender: halo1 AT zahav DOT net DOT il
To: "syco" <sycoweb AT chez DOT com>
Message-Id: <5137-Fri22Dec2000173842+0200-eliz@is.elta.co.il>
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CC: djgpp AT delorie DOT com
In-reply-to: <91vcmd$3ap$1@pollux.ip-plus.net> (sycoweb@chez.com)
Subject: Re: Async COM managing
References:  <91vcmd$3ap$1 AT pollux DOT ip-plus DOT net>
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> From: "syco" <sycoweb AT chez DOT com>
> Newsgroups: comp.os.msdos.djgpp
> Date: Fri, 22 Dec 2000 12:13:45 +0100
> 
> I tried to drive async communication with bioscom().
> I can config, send & receive datas whith all the stuff requiered by
> bioscom(), but :
> - when I use HyperTerminal, or another program needing COM, here is an error
> saying COM is not Free.
> 
> How can I CLOSE ( and so release ) the com port used with bioscom() ?

Is that on Windows?  If so, I'm afraid you'll need to exit the
program.  You could try initializing the port, but I'm not sure it
will do what you want.

Perhaps there's some Windows-wide setting that can make the COM port
use be non-exclusive, but I don't know what that is.