Date: Wed, 04 Jun 2003 06:36:23 +0300
From: "Eli Zaretskii" <eliz AT elta DOT co DOT il>
Sender: halo1 AT zahav DOT net DOT il
To: djgpp AT delorie DOT com
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In-reply-to: <310ccc6e.0306031251.18ad024a@posting.google.com>
	(torty5737 AT my-deja DOT com)
Subject: Re: Remote debugging over a serial cable
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> From: torty5737 AT my-deja DOT com (Henry Nebrensky)
> Newsgroups: comp.os.msdos.djgpp
> Date: 3 Jun 2003 13:51:55 -0700
> 
> DOS has the CTTY command which AIUI lets you redirect console I/O to a 
> serial port. 
> 
> So my naive solution to this would be to use this to run gdb on the 
> target machine, but with the "console" on the Windows box - which is 
> what I assumed the OP was trying to do.
> 
> Is this something that won't work ?

Unfortunately, it won't: the DJGPP port of GDB uses an emulation of
the termios functionality that is incompatible with CTTY.  CTTY
requires DOS I/O functions to be used for terminal input/output,
whereas the DJGPP emulation of termios uses BIOS functions.