Subject: Re: GPX cable
To: None <port-vax@NetBSD.ORG>
From: Dave Clarke x8048 <Dave.Clarke@swindon.gpsemi.com>
Date: 03/07/1996 08:12:56
> From daemon Wed Mar 6 23:14:18 1996
> >From owner-port-vax@NetBSD.ORG Wed Mar 6 23:14:10 1996
> From: firstname.lastname@example.org
> Date: Wed, 6 Mar 1996 11:14:36 -0500
> To: port-vax@NetBSD.ORG
> Subject: dumpster fun
> Sender: owner-port-vax@NetBSD.ORG
> X-Loop: port-vax@NetBSD.ORG
> Content-Length: 1899
> 1) Does NetBSD support this machine yet?
> Yep, except I don't think there is a driver for the qvss display card yet.
> (There is a driver that was released with 4.4BSD-Lite, but it needs to be
> tweaked to work with NetBSD. If you could get it going, I'm sure it would
> make others happy:-)
> I did get my hands on an old service manual, and it says that 'A'
> means (among other things) that the machine is looking for the
> keyboard and monitor. The machine does have a keyboard and monitor
> connections on the back.
> Any way around this? Or do I have to buy a monitor and keyboard?
> Which monitor and keyboards will work? Perhaps a ds2100 keyboard
> with adaptor? Sigh.
> It is looking for a dec lk201 keyboard, aka a ds2100 keyboard will do the trick.
> (and maybe also a mouse, I'm not sure if there is a mouse self test or not.
> I'm not sure what mouse you will need. The old qvss we had used a rectamgular
> mouse DEC called a VS10X, but I'm not sure if all qvss cards required that
> Alternately, you can yank out the qvss display card, since you don't
> have driver support for it anyhow.
> The trick here is that you can't leave any empty slots (gaps) in a qbus,
> which means that you either have to move the rest of the boards up or replace
> the qvss with a couple of grant continuity cards. On that machine, the
> first three slots are qbus in the A-B slots, then the qbus zigzags starting
> on slot 4:
> slot 4 A-B -> C-D
> 5 C-D -> A-B
> 6 A-B -> C-D
> and so on..
> Don't put a full width (quad) qbus board in the first three slots, but half
> width (dual) qbus boards (or grant continuity cards) are needed in the A-B
> side of the first three slots unless occupied by cpu or memory (fun eh!:-).
> Good luck with it, rick
> ps: Sorry, but I don't have the pinout for the qvss cable. If you need to
> make up a cable, maybe someone else on the list can help.
Here is some information on the connection required for the BC18Z cable, the one that connects between a VaxStation II/GPX and VR290 monitor.
Description DEC BC-18 Cable, DB15
Video Mouse &
Keyboard Transmit Pin 15 Pin 1
Keyboard Receive Pin 7 Pin 2
Keyboard Ground Pin 14 Pin 3
Keyboard Power Pin 8 Pin 4
Mouse Mini din
Mouse Transmit Pin 5 Pin 2
Mouse Receive Pin 13 Pin 3
Mouse Ground Pin 6 Pin 1
Mouse Power +5V Pin 4 Pin 5
Mouse Power -20V Pin 12 Pin 4
Pins 6 & 7 No connection
Red video Pin 9 Red BNC Center
Red ground Pin 1 Red BNC shield
Green video Pin 10 Green BNC Center
Green ground Pin 2 Green BNC shield
Blue video Pin 1 Blue BNC Center
Blue ground Pin 3 Blue BNC shield