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Date:      Fri, 5 Sep 1997 22:56:16 -0700 (PDT)
From:      Doug White <dwhite@gdi.uoregon.edu>
To:        =?iso-8859-1?Q?=DEor=F0ur?= Ivarsson <totii@est.is>
Cc:        questions@FreeBSD.ORG
Subject:   Re: How to write device driver ?
Message-ID:  <Pine.BSF.3.96.970905225519.7395g-100000@localhost>
In-Reply-To: <340C0D00.41C67EA6@est.is>

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On Tue, 2 Sep 1997, [iso-8859-1] Žoršur Ivarsson wrote:

> Can any of you help me with writing device driver for two cards i have
> here on my desk.
> I have all documents and API information for the cards.
> 
> One is AD converter 8input 12bit + 1 DA 12bit
> 
> and the other is digital IO card with 6 8bit ports and timer IO
> 
> I heard of something like /dev/IO but I did not find any information
> about
> writing interface to it.

Using /dev/io would be good for testing but not for the actual driver.
you'll want to put it in the kernel for that.  I'd suggest looking in the
FreeBSD Handbok at http://www.freebsd.org, looking at the source for other
devices drivers in the kernel, and pestering hackers@freebsd.org for more
information.

Doug White                              | University of Oregon  
Internet:  dwhite@resnet.uoregon.edu    | Residence Networking Assistant
http://gladstone.uoregon.edu/~dwhite    | Computer Science Major
Spam routed to /dev/null by Procmail    | Death to Cyberpromo




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