Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!mephisto!ncar!unmvax!bbx!bbxsda!scott
From: scott@bbxsda.UUCP (Scott Amspoker)
Newsgroups: comp.lang.c
Subject: Re: Port Access
Message-ID: <504@bbxsda.UUCP>
Date: 3 Jan 90 16:41:45 GMT
References: <12720@cbnews.ATT.COM>
Reply-To: scott@bbxsda.UUCP (Scott Amspoker)
Distribution: usa
Organization: Basis International,  Albuquerque, NM
Lines: 23

In article <12720@cbnews.ATT.COM> knt@cbnews.ATT.COM (kirk.n.trost,59473,cb,1k238,614 860 4225) writes:
>
>Is there an easy way to access 386 ports using C 
>under UNIX.
>
>For example:
>
>     x = input (portno)
>         output (portno, value)

I would be very surprised if UNIX system allowed a user process to access
ports directly.  If you are writing a driver or kernal routine in C,
procedures like the ones in your example could be used.  Turbo C,
for example, will generate in-line code for inport() and outport()
calls.  However, there is no standard here.  You may write your own
in assembler or see if your C library already has them.


-- 
Scott Amspoker
Basis International, Albuquerque, NM
(505) 345-5232
unmvax.cs.unm.edu!bbx!bbxsda!scott