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From: fidder@druhi.UUCP (FidderT)
Newsgroups: net.micro.pc,net.micro
Subject: Venix/86 Device Driver Question...
Message-ID: <915@druhi.UUCP>
Date: Sat, 23-Aug-86 02:31:11 EDT
Article-I.D.: druhi.915
Posted: Sat Aug 23 02:31:11 1986
Date-Received: Sat, 23-Aug-86 23:42:04 EDT
Organization: AT&T Information System Labs, Denver, Co
Lines: 25
Xref: mnetor net.micro.pc:6258 net.micro:5908


I have been playing with writing a device driver for a Venix/86 system,
however... I have not been able to get any doc's on this so I am having 
a little trouble getting things like 'iomove' and 'copyin/out' working
like I would expect them. Attempting something like the following 
for tstdev_write simpily fails: (note: u.u_count looks correct)

	struct buf *bp;
		
	iomove(bp->b_addr,u.u_count,B_WRITE);

I know someone out there must have work through these problems before.
Like I said, I am only playing with this so I don't intend to purchase 
the sample device driver sold by venix.

And if you have any other little tips on the Venix/86 kernel I would be 
interested in hearing them. Small (or large) samples would be great!

Oh, I should mention that this system is running on an IBM-PC clone.

Thanks,

	Ted Fidder
	Denver AT&T-IS
	ihnp4!druhi!fidder