DR11-W and DRV11-WA ... related?

As you already know I got this Tek 611 Thing working lately and now I think about connecting that Beast to one of the PDP11 systems I have. They all are QBUS 11's, (12,53,83). Joachim gave me the hint to use a DRV11 or an DRV11-WA to connect the needed D/A Converters to supply the Tek611. I do have both DRV11 Variants. Now I'm looked in the 2.11BSDs sources and found a driver for DR11 boards, which looks like a similar parallel interface for the UNIbus. (I'm a Unix guy, and using BSD may be the fastest way for me to get this to work). How similar are the 3 interaces to each other? Is is worth to begin with the DR11 driver..? I've don't looked deep in the DR11 Manual and I dont even have one for the DRV11 Boards (...has someone a Hardware/Programming Manual?) so I'm primarely asking here for some experiences from other people.. Kind Regards, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583 www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741