Date: Thu, 9 Mar 2000 14:56:48 +0200 (IST)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
X-Sender: eliz AT is
To: Rossz Vámos-Wentworth <rossw AT jps DOT net>
cc: djgpp AT delorie DOT com
Subject: Re: what is the serial device
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On Wed, 8 Mar 2000, Rossz Vámos-Wentworth wrote:

> What is the string used to open the serial device.  The standard Linux
> syntax does not work:
> 
>     fd = open("/dev/ttyS0", O_RDWR);

Use this:

  fd = open ("/dev/COM1", O_RDWR);

> I tried several variations, but get messages such as "not a tty device".

This might be a different problem, unrelated to the name of the device.  
Please look into the sources and tell which function is called where
the above error message is printed.  You might be hitting an area where 
DJGPP doesn't emulate Unix devices well enough.

The usual way of working around these problems is to provide emulation of 
missing devices via the DJGPP Filesystem Extension feature.  (It is 
dfocumented in the library reference manual.)