Date: Thu, 22 Feb 2001 20:00:01 +0200
From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
Sender: halo1 AT zahav DOT net DOT il
To: Dietmar DOT Segbert AT T-ONLINE DOT de (Dietmar Segbert)
Message-Id: <7263-Thu22Feb2001200000+0200-eliz@is.elta.co.il>
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CC: djgpp AT delorie DOT com
In-reply-to: <7wMZ3ulbJVB@0256597511.t-online.de>
	(Dietmar DOT Segbert AT T-ONLINE DOT de)
Subject: Re: rs 232 stuff
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> From: Dietmar DOT Segbert AT T-ONLINE DOT de (Dietmar Segbert)
> Newsgroups: comp.os.msdos.djgpp
> Date: 22 Feb 2001 15:27:00 +0100
> 
> Hello,
> i have a routine to controll the rs 232 serial Port.
> It is writen in turbo C.
> Compiling with GCC he makes some Errors.
> "oldirq" undefined refernce.

Please read section 18.9 of the DJGPP FAQ list.  Installing hardware
interrupt handlers is very different in DJGPP, because your program
runs in protected mode.