Theres an OSF1-centric 'writing device drivers' by burke,parenti, and 
wojtas, too, probably out of print now.. 

On Fri, 11 Apr 2003, Chris Pinnock wrote:

> On Fri, Apr 11, 2003 at 12:11:08PM +0100, Rasputin wrote:
> > 
> > (Sorry if this is OT) I've got:
> > 
> > the daemon book
> > K&R
> > Stevens (UNIX network programming vol1 and APIUE)
> > /usr/src :)
> > 
> > Can anyone recommend a good book to fill the gaps - something on
> > device drivers in particular, but not Linux-centric? Thanks.
> 
> There is  "Writing UNIX Device Drivers" by George Pajari published by
> Addison Wesley. Haven't read much of it, but it is System V specific.
> 
> best wishes,
> Chris
>