19 Jul
2004
19 Jul
'04
6:50 p.m.
I looked in my 11/34 CPU box. There's room for a 4-slot backplane.
I currently have two 9-slot backplanes. Can I use an M9202 to
connect the 9-slot backplane to the RK11-D 4-slot backplane?
Also, I have not consulted the manuals to see how close I might
get to overloading the CPU box. I have the following modules
in my box, starting from the right as you look inside the box
from the front:
First backplane:
1) 11/34 CPU M8266
2) 11/34 CPU M8265)
3) M9312 bootstrap
3) M7859 console
4) M7856 - DL11-W SLU+clock
5) G727A
6) M7891 - 64k memory
7) M7891 - 64k memory
8) M7762 - RL01 controller
9) M9202
Second backplane:
1) M9202
2) G727A
3) G727A - Plan to put M7819 and M7814 in two of these slots
4) G727A
5) G727A
6) G7273
7) G727A
8) G727A
9) M9302
If I add the RK11-D backplane to the left of the other two,
then can I use another M9202 to connect the two backplanes
and move the M9302 to slot 4 of the RK11-D backplane?
RK11-D backplane:
1)
2)
3)
4)
... Ashley
-----Original Message-----
From: cctalk-bounces(a)classiccmp.org
[mailto:cctalk-bounces@classiccmp.org]On Behalf Of Ethan Dicks
Sent: Monday, July 19, 2004 7:13 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: RK05 interfacing to unibus PDP-11 (was RK05 stuff)
On Mon, Jul 19, 2004 at 09:16:33AM -0400, Ashley Carder wrote:
Can someone here on the list supply me with the
numbers of each
of the cards in the RK05 drive's logic unit, for both the PDP-11 and
the PDP-8? I need to verify what's in my two drives and make
sure that they are correct for the unibus PDP-11.
There is no difference in RK05 logic when you use an RK05 drive with
a PDP-11 controller or a PDP-8 controller. There are two different
cable sets to hook a controller to the first drive, depending on which
controller you have.
If you have an RKV11D (Qbus), you'll have a 4-slot box with RK11D
cards in it, plus a pair of 40-pin ribbon cables going to an M993
card in the first drive, and a pair of 40-pin ribbon cables going
to a card that sits on the Qbus. The dual 40-pin ribbon cables
and M993 paddle card are identical to what you need to hang a drive
off of an RK8E, but that doesn't help you since you have a PDP-11.
If you have an RK11C or RK11D (sounds like you have an RK11D), you'll
have a mylar cable of the identical type that connects Unibus
backplanes together, as well as RK05 drive to RK05 drive. That card
fits into a dedicated slot in the RK11 backplane, not a Unibus slot.
Also, the numbers of each of the cards in the RK11
controller set
for a unibus PDP-11... Can someone elaborate on the details of
connecting RK05 drives to a unibus pdp-11...
Do you have the engineering drawings for the RK11D? I would be
surprised if they weren't on bitsavers.
-ethan
--
Ethan Dicks, A-130-S Current South Pole Weather at 19-Jul-2004 23:00 Z
South Pole Station
PSC 468 Box 400 Temp -88.3 F (-66.8 C) Windchill -124 F (-86.7
C)
APO AP 96598 Wind 8 kts Grid 077 Barometer 642.8 mb (12063.
ft)
Ethan.Dicks(a)amanda.spole.gov
http://penguincentral.com/penguincentral.html