> Date: Sat, 31 Oct 2015 13:11:29 -0700
> From: Charles Anthony <charles.unix.pro at gmail.com>
> Subject: Front panels
> The front panel I want to build is for my DPS8-M (aka Honeywell 6180)
> -- Charles
That is only one of two panels on the Honeywell processors. There was
another one on the other CPU door. There is are three rollers with an
encoding switchs to change what the lights were displaying. Moving the
roller changed the text that was visible in the window below the light
bulbs and told you what each light meant.
Be good to see this all live again! \
Kudos to Allen and LCM!
Ed# _www.smecc.org_ (http://www.smecc.org)
In a message dated 11/2/2015 5:48:04 P.M. US Mountain Standard Time,
p.gebhardt at ymail.com writes:
All the HW and SW that
>> was in running condition was rescued by the LCM in Seattle. I know LCM
>> had someone with Sigma experience working on and off on the Sigma to
>> running again. Not sure of the current status. But, that would be an
>> awesome time-sharing system alongside the DEC-20 they have.
>Just asking: Any interest in 80-pin SCA drives,
>Ultra 3 and Ultra320 in various capacities, both
>IBM and HP/Compaq 'caddies' ?
I think you mentioned you had ~150GB drives, but I was wondering if you had
some in larger size? I'd take a couple 300GB if the price was right. I
bought an LTO-3 drive, but if I want to do any CPU based compression, I'm
going to need at least a (400GB) tape's worth of 'tape spooling' buffer
space. 3 ~150GB drives would work, but I'd like to cut down on power and
noise, and go with a couple 300GB drives if you have them, and the price is
right. I'd be willing to do about $40 for the two or three drives, if
that's not worth your time, then just let me know and I'll start looking
for some drives elsewhere.
The front panel I want to build is for my DPS8-M (aka Honeywell 6180)
(Now it's a pretty big panel, so I'm thinking 1/4 scale.)
I'm mostly interested in the lights; having functional switches would be
nice, but not critical.
(My background: good grasp of basic digital electronics; did some wirewrap
boards back in the early eighties. Poor soldering skills, no workshop. Mad
I would like to build it reasonably cheaply.
So I would start with a simple SBC; Beaglebone or the like, that can
function as a USB device. I can write the S/W to push a bunch of bits down
What I don't know how to do is drive 500 or so LEDs.
I am guessing a bunch of shift registers, but I've pretty much reached my
design limits. I need some guidance on locating and understanding the
technology to run that many LEDs.
I'm trying to set up a MicroVAX II that has an SMD disk attached to an
Emulex QD32 controller. I need to test and/or format the disk and so I'm
looking for images of the Emulex diagnostic floppies (should be RX50
AFAIK). Those found at http://www.headcrashers.org/comp/rx50/ boot, but I
have not the faintest idea of how to start anything in there; even a "DIR"
gives only an error, so I assume they are faulty/incomplete.
That's what I get:
>>> b dua0
Emulex VAX Monitor V1.2 MicroVAX I 16-SEP-1985 09:00:00
---> ERROR: PHYSICAL READ ERROR
Is there by any chance also a diagnostic manual for this stuff?
Jay West and I are working on rescuing a minicomputer system in the
Phoenix area. The equipment will eventually be shipped to one of
us, but for right now we need to get it out of the building where it
currently resides, and into temporary storage. If we have to, we'll
use a u-store facility, but we're hoping a collector near Phoenix
might be willing to store the system for a few months until we can
arrange onward movement, to reduce the wallet pain.
We think we have transport lined up to move it to your location,
though if you happen to have a liftgate truck and be a nice guy or
gal, ... ;)
Size: the system is basically two racks, plus boxes for cables,
manuals, etc. The whole pile should be less than three racks worth
of floor space. Total weight is about 1400 pounds.
Time frame: the equipment needs to be out of its current location
before the end of November. We'll commit to moving the equipment
onward within six months.
If you think you might be able to help, drop Jay (jwest at classiccmp.org)
or me a line.
I've been away from DEC stuff far too long, so I don't remember what this is
called - but I'll describe it.
The beige dec cabinets (corp cab?) that are wider than about 19 inches...
the ones where there is the "normal" 19" rack and then to the left or the
right there is a top to bottom, front to back, "plenum" about maybe 8 inches
wide. What I have is the brown cover for that plenum. 52.5 tall, 7.5 wide,
hex key quick-release at the top, two ears at the bottom. Come to think of
it, I'm not 100% sure it is from a DEC cabinet but I am thinking it came off
one of a few five foot tall beige dec racks all stuffed top to bottom with
Anywho, whatever it is from, I am sure I do not have the rack (nor the
RA81's that came with) that it goes with any longer. I'm in a rather
non-trivial project to clean out and organize the basement and I'd like to
get rid of this. I'd hate to put it in the skip if someone looks at it as
"the last unobtainium piece to finish off their restoration". If no one
wants it, I'm going to snag the hex key quick-release mech for myself and
pitch the rest.
Looking at the document at:
The picture, though extremely fuzzy, matches my panel in the
organization of legends and breaks in line. Since I have what I think
is a complete RF08, and pieces of the drive (RS08), I think it is safe
to conclude that I have the panel from an RF08.
However, the panel is designed to actually hold up to 8 lights of 36
bits each. I have to believe that DEC used this setup for any number of
For photos of the drive electronics, controller electronics, power
supply, platter and display and display measurements, see:
I posted detail display panel photos and measurements in subfolder
Display of this Google Drive folder (RF08-RS08)
The main folder has photos of the drive (RS08) electronics and the
controller (RF08) electronics, etc. (The very first photo shows some
mouse droppings / seeds, which I cleaned up (though I did not entirely
disassemble the thing), and are less apparent in subsequent photos (I
recall there being even more extensive cleaning after the simple
vacuuming I did before taking most of the photos). There is also a
photo of the power supply and the (now separated from the container)
platter and a head or two as well as a photo of the display panel.
In the Display sub-folder are photos of the panel and its components,
and a text file with measurements.
Apologies in advance for the photo quality of the display. I didn't
want to use a flash, and so there was some camera shake, even with IS.
On 10/26/2015 7:25 PM, Noel Chiappa wrote:
> > I have just worked out the pattern on the cables to the indicator panel,
> > which allows me, from the device schematics, to tell which signals are
> > shown on which lights on the indicator panel - I can even tell where the
> > spaces are between light groups (since those lights are not
> > connected). So I know now exactly what the panel shows, and almost
> > certainly in which lights (although there might be a left/right swap,
> > there are no fields which span the boundary).
> So here's the writeup on the RK11-C insert:
> The unusual light pattern should allow us to know, instantly, if we see one.
> I've ordered 10 7101J50-CQE2's from Online ... _Iff_ they fit into the
> old front panels, I'll let the list know.
> let's see if the 7101J50-C's fit, then we can discuss how to proceed.
So the switches got here Friday, and alas, they are _not quite_ the right
They are very close, however - they have the bent face-plate, with the latch,
and the triangular side plates with the holes at the tips for the pivots of
the toggle (actuator, is I guess the formal name). They are also the same
size (facing them - i.e. side-side, both directions).
The only thing that's wrong is that the distance between the switch body, and
the top of the bent face-plate, is too far. This, alas, means not only that
it won't fit into existing holder frames on front consoles, but they also
interfere with the installation of the DEC custom toggles (actuators).
However, they are _so close_ that it's possible that C+K can produce some
semi-custom ones with the right distance. (I've had a good look through the
C+K 7000 series catalog, and all of the current snap-in panel ones have the
taller offset.) Maybe they even still have the tooling, and it's only a
Anyway, I will call C+K on Monday, and see what I can find out.
Sitting here doing the overlays for the 8/e silk screen run.
I had a thought. Including all makes of computer old and new.
What about a front panel with lights and switches for systems
that never had one and could have done with one?
Which computer would you nominate?
I'm not about to do anything about it.
But the answers should be interesting