Subject: Re: uVAX-II doesn't work without RQDX???
To: Gunther Schadow <gunther@aurora.regenstrief.org>
From: Chuck McManis <cmcmanis@mcmanis.com>
List: port-vax
Date: 04/14/2002 20:20:37
At 09:48 PM 4/14/02 -0500, Gunther Schadow wrote:
>Ahh, now that's a consideration. So how is this exactly? In a
>BA23 (that's the small uVAX-II case, right?). So let's talk about
>the future, can I do this:
>
> 1 --- --- --- --- KA630
> 2 --- --- --- --- MS630
> 3 --- --- --- --- MS630
> 4 DEQNA --- ---|--- --- TQK50
>
> 5 --- --- --- --- KFQSA
>
> 6 --- --- --- --- KDB50/1
> 7 --- --- --- --- KDB50/2
>
> 8 --- --- --- --- open
Except that I would do it :
+---------+---------+
1 | KA630 |
+---------+---------+
2 | MS630 |
+---------+---------+
3 | MS630 |
+---------+---------+
4 | DEQNA | TQK50 |
+---------+---------+
5 | KDA50 1/2 |
+---------+---------+
6 | KDA50 2/2 |
+---------+---------+
7 | KFQSA |
+---------+---------+
8 | -- Empty -- |
+---------+---------+
My rational for this is that the KDA50 is compatible with Q/Q backplanes
(it carries grant forward) but the KFQSA may not be (introduced in the
BA213 time frame) I can't check because my KFQSA is in a box in storage at
the moment.
>did I miss anything? Do I have to move stuff one slot down and
>put grants inbetween?
You should be OK, but note that this system will catch on fire if you have
the "old" wiring harness. The KDB50 is a power hog.
--Chuck