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From: David Bacon <bacon@eecs.lehigh.edu>
Subject: Re: inb/outb for GNAT (Linux) ??
Date: 1998/01/27
Message-ID: <34CE1BC3.156DA6B9@eecs.lehigh.edu>#1/1
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Date: 1998-01-27T00:00:00+00:00
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Nicolas NAVET wrote:
> 
> Hello,
> 
>  I'am using GNAT for Linux. I need to write
>  data to a serial port. Is it possible to do that with ADA
>  without using a device driver ?
>  I' have searched through the packages for functions like
>  inb()/outb() but without result.
> 
> 
> Thanks,
> 
> Nicolas Navet

You are looking in the wrong place, and my answer is necessarily
not Ada-specific:

In Linux, the serial ports can be opened and written to in much
the same way as regular files.  They are usually named /dev/cua0,
/dev/cua1, etc.  For low-level operations (such as manipulating
the DTR bit), you may find direct-access operations on /dev/port
useful also (try "man port" on Slackware or RedHat Linux).

     dB