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From: terry@cs.weber.edu (Terry Lambert)
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Subject: Re: Accessing i/o map space with freebsd 2.1.0
To: ROBIN@ptnsct.nis.za (Robin Hunt)
Date: Tue, 8 Aug 95 11:57:42 MDT
Cc: questions@freebsd.org
In-Reply-To: <950808145946.94e1@ptnsct.nis.za> from "Robin Hunt" at Aug 8, 95 02:59:46 pm
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> 
> Hi there,
> 
> I need to write either a driver or a piece of code with which I can access
> a device in the cpu's io map.
> 
> 1) Is it required that I write I driver
> 2) If not, how can I use outb / inb without creating a bus error?

Open /dev/io.  You need root privs to do this, for obvious reasons.
A process with /dev/io open is permitted to do what you want to do.


					Terry Lambert
					terry@cs.weber.edu
---
Any opinions in this posting are my own and not those of my present
or previous employers.