>They are made by (apparently) USDC, model number 1101, revisions "01" and
>"BG". The chips are marked circa 1982. They have a Z80, som EPROM, a
>couple of PALs, and a 40 pin IDC header. They are half-height boards (
>i.e. two sets of fingers). "LSI-11 Host Interface" is silk screened onto
>the board under the part number.
>
>Can anyone tell me what these are? They came out of an 11/23 box badged
>11-DM4, althought the box is in the truck and I may have the DM$ slightly
>incorrect.
USDC= U.S. Design Corporation. They're based in Maryland, not too far
>from where I now live. They sold (among other things) disk subsystems.
The one you have emulates RK06/RK07 drives, and hooked (via the 40
pin connector) to an external box that had a hard drive (either a 5.25" MFM
or a 8" non-MFM) with electronics that converted the native
drive interface to the 40-pin interface. You might have seen the
appropriate drive boxes in my storage space in Surrey, if you remember
our trip there :-). They're 5.25" rack-width boxes, have black fronts with
a row of bar LED's that blink in a cylon patterm when running, and are about
25" deep - you ought to head back out to UBC and see if there are any
USDC boxes meeting this description there. I still have the drives and
the interfaces, but it's been years since I've powered them up.
The controller is 22-bit-Qbus capable, but the PDP-11 OS's only know of
Unibus RK06's/07's, so machines with more than 256kbytes of memory
generally had USDC patches made to the OS drivers so they knew how to
do DMA to high memory.
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
It was a very cheap sale. Unfortunately it means that the scrappers got most
of it. Checkout is still going on so there is a chance for some rescues if
anyone is interested. I am posting the following list in hope that someone is
interested in the misc. I will negotiate with the scrappers who bought the
following if you are interested. Cheap offers are OK but we must move fast.
Vector 3 (not a Soroc) with attached hard/floppy drive. The power cord for
the HD/FL is broke. The CPU powers up nicely and all has worked in the past.
The glare guard fabric is torn.
Two Vector 4s with hard and floppy drives. They work but I can't find
keyboards.
Vector DD-5026 dual floppy accessory.
Andromedia Systems Dual 5 1/4 floppy disk drive, DDMDS-B, SN 21. Could this
be for DEC equip.
MD 10 (Media Distributing Mfg.) Model RM11, SN 0061. One of the first small
systems hard drive. Untested.
CCS (California Computer Systems) 12 slot S 100 Mainframe with 64K static ram
(4 - 16K boards), 2850 system processor Z80A, 2805 terminator, 2422 Floppy
controller, 2830, 6 SIO. Missing the faceplate and has scratches on finish.
Goes with a complete Dual 8" external drive. Set up as a USPS controller.
IBC Multi-User Business computer, running a Z80H.
DBS 16 4 user MPM system, has a 10 meg HD and has a serial number of 48. No
terminals. Appears to work.
Vista, V-1100 dual 8" disk drive case with dual Shugart 860-1 drives.
Another drive case is a JMR Electronics with two Tandon TM848-01s. Powers up.
Commodore dual disk drive. 4040 I think. HPIB interface.
Compupros, Two 16 slots wi Tarbel Z80 CPU/IO, Ram 16 and the Tarbel MD 2022
8" Floppy controller.
Integrand 7 slot S 100 Mainframe with the funny wide slot 5 1/4" disk drive.
No cards.
A Columbia 1202-4/110 Drive cabinet with an 8" HD and an 8" Floppy.
A 10 slot Compupro with a single 8" SS drive, 8085/88 CPU, Ram 16 180A and a
Disk One.
A US Data dual 8" SD disk drive cabinet.
A Telebyte TBX front loading reel Tape drive with serial IF.
A Televideo TS803 that boots MS Dos. Works fine.
a Symmetric 375 for parts, no HD (1/2 of the power of a VAX 750)!
I have also made a deal with another scrapper to offer both 8 " hard and
floppy drives.
Several Quantum 2020s, 2040s and 2080 HDs.
Three IMI 7720 HDs
Shugart 801 and 851 full Ht Floppies
Mitsubishi 2894 - 63B Full Ht. Floppies DSDD
also Mitsubishi 1/2 Ht 2896-63B DSDD Floppies,
Tandon 848 1/2 Ht floppies of different versions,
NEC 1165-FQ & 1 1165-A 1/2 Ht floppys, and
Shugart 810 and 860 1/2 Ht floppies, all 8" drives.
All are working pulls, heads parked but untested. Looking to get $10 to $40
depending on size, condition and quantity. Shipping additional.
I also believe the VAX 730, the RA60 and the RA81s are headed for scrap.
Any Interest out there?
Paxton
For the longest time, the TMS 9900 didn't appear in anything one could
consider a reasonable computer. There was one model I saw at a colleagues
home which had expansion capability, but he often complained that cards for
interesting applications, like mass storage, etc, were not available. I
didn't pursue it and so I believe(d) it to be true. I saw one ad for an
SC/MP, in '77, but that one was a homebrewed model. Other than that, it was
not of much interest here. Was that not the case in Germany? The processor
was still in National's data book, but I really wasn't then and am not now
of any operating system or application software for it. I don't believe I
ever saw a real SC/MP based computer.
Dick
-----Original Message-----
From: Hans Franke <Hans.Franke(a)mch20.sbs.de>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Wednesday, April 21, 1999 2:10 PM
Subject: Re: z80 timing... 6502 timing
>> I suppose that's true, Hans, BUT, in1982, there were few other
processors
>> than the 6502 and Z-80 in popular use, with the exception of the 8080A
and
>> the 8085, of course. The majority of home computers, though, used one of
>> these two, at that time. Several years later, we found the 6510 and 6809
in
>> commercially interesting applications, but not for as long a period as
the
>> Z-80 and 6502. These two had a life of nearly ten years before the
IBM-PC
>> and its clones wrenched the home computer market from their grasp.
>
>in 1982, the 9900 was also big and beasts like SC/MP where still on
>the run (and 680xx, 808x and 160xx comming up), but you're right if
>you want to pich the two mayor player in the SOHO market.
>
>But still, a general measurement includes them.
>
>Gruss
>H.
>
>--
>Stimm gegen SPAM: http://www.politik-digital.de/spam/de/
>Vote against SPAM: http://www.politik-digital.de/spam/en/
>Votez contre le SPAM: http://www.politik-digital.de/spam/fr/
>Ich denke, also bin ich, also gut
>HRK
Hi Gang:
I just returned from the local university junk sale, and acquired (among
other detritus) two Q bus boards.
They are made by (apparently) USDC, model number 1101, revisions "01" and
"BG". The chips are marked circa 1982. They have a Z80, som EPROM, a
couple of PALs, and a 40 pin IDC header. They are half-height boards (
i.e. two sets of fingers). "LSI-11 Host Interface" is silk screened onto
the board under the part number.
Can anyone tell me what these are? They came out of an 11/23 box badged
11-DM4, althought the box is in the truck and I may have the DM$ slightly
incorrect.
Thanks,
Kevin
--
Kevin McQuiggin VE7ZD
mcquiggi(a)sfu.ca
>There's a rough equivalent to the "DEC Field Guide" for Sun systems.
>It's the "Sun Hardware Reference", and is by James W Birsall, and
>(at least it used to) is posted to comp.sys.sun.hardware semi-regularly.
>
>One version on the web is at
>
> http://stumbo.vm.com/~techrat/faq_hardware/hwref0.html
I should also point out that there's a good amount of information in
that FAQ that non-Sun collectors would also be interested in. Settings
for many Multibus and VME modules, settings for many of the Emulex MFM and
ESDI<->SCSI bridge controllers, settings for at least some of the more
common QIC drives, some very basic information on older SCSI and IPI
drives, and a pointer to the "Sun format.dat" table, which has geometry
tables for common configurations of many SMD drives.
There are also some gaping holes in the information that I'm sure we
could help fill in, too :-).
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
>This is the configuration that the machine came in, except it was missing
>the RAM and DELUA, I've added both where they had originally been according
>to the diagram on the CPU cover, except I'm not sure if there were 1 or 4
>RAM cards originally.
>
>Pardon such basic questions, but this is the first time I've worked on a
>UNIBUS system, I'm used to working on my Q-Bus systems.
Speaking from decades of experience, you *do not* put a Unibus machine
together in a big configuration, especially from mix-and-match used
parts, and get it to work. You go down to the most basic configuration
possible, and then add parts one at a time, testing as you go.
I'd recommend that anyone in a situation similar to yours strip the
machine down to a single system unit (i.e. pull the M9202 linking
the backplane segments together and put a terminator in slot 14),
with a single memory board and a single disk-like peripheral, then
work their way up. Of course, you need a terminator before you can
do any of this, and preferably a few spare grant continuity cards
(but we'll make sure these shortcomings are fixed shortly!)
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
On 19 Apr 1999, none other than Sellam Ismail <dastar(a)ncal.verio.com> himself wrote:
] I don't see what the big attraction to a core plane is. You stick it on
] your wall. Whoopee! Look at me, I have a core plane on my wall. Big
] fricken deal. Nobody even knows what it is anyway. From afar it looks
] like a black square. Closer up it looks like a piece of a window screen.
]
] Unfortunately, my rant is not going to stop the lame-o's selling it from
] hyping it up as some cool collectable, and it's not going to stop the
] techno-wannabees from buying it to stick on their wall.
So what kind of wall hanging is more appropriate for a geek?
Besides, where the heck am I going to find the rest of a Univac
to plug it into? I like the "bait" theory and all, but...
And too, I'd wager that most of your collection is of the "look at
that" variety. You can't tell me you actually _use_ more than a
handful of them. I've seen your schedule, remember?
And let's not drag bubble memory into it, eh?
Nyah, nyah, and nyah.
Bill.
On 19 Apr 1999, that Cool Frood ard(a)p850ug1.demon.co.uk (Tony Duell) wrote:
] Yes. I have the Signetics data sheets for the 8x300, 8T31, etc. They're
] in an old Mullard/Philips data book which also covers the 68000.
I recently scored a Signetics data book with 8x305 data in it, along
with a Fairchild databook (F8) and an RCA databook (1802). It's weird,
I'm almost as happy about it as if I had gotten machines based on those
processors! Cool Beans!
Bill.
I've finally got power for my PDP-11/44 so I'm getting ready to start
testing it out, and as a result have made a careful diagram of the CPU
prior to pulling the cards so I can test the Power Supply. It took some
doing, but I found Tony's message from June 10th of last year telling me
how to test it :^)
In doing up the diagram I've discovered a few problems. I'd appreciate it
if someone that knows what they're looking at could take a look a the
diagram though.
The diagram is here:
http://zane.brouhaha.com/healyzh/images/pdp1144cards.GIF
I realize I'm missing M9302 UNIBUS Terminator. Slot 15 is actually the gap
between the two backplanes in the cabinet, and Slots 25-29 don't exist. I
suspect I need "Grant Continuity Cards" in Slots 10-12 since I don't have
memory in them.
Is there anything else that I'm missing, or does anyone see any problems
with this configuration?
This is the configuration that the machine came in, except it was missing
the RAM and DELUA, I've added both where they had originally been according
to the diagram on the CPU cover, except I'm not sure if there were 1 or 4
RAM cards originally.
Pardon such basic questions, but this is the first time I've worked on a
UNIBUS system, I'm used to working on my Q-Bus systems.
I did get one pleasant surprise, I'd thought I was missing the FP11.
Zane
| Zane H. Healy | UNIX Systems Adminstrator |
| healyzh(a)aracnet.com (primary) | Linux Enthusiast |
| healyzh(a)holonet.net (alternate) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| and Zane's Computer Museum. |
| http://www.dragonfire.net/~healyzh/ |
I'd go with a pickup load of $$$ and come back with several loads of junk,
er, umm, stuff. Good thing I'm on the wrong side of the country.
Joe
At 11:05 AM 4/21/99 -0700, you wrote:
>If I went down with a pickupload of that stuff I might bring back a pickup
>load of other stuff....
>
>George
>
>=========================================================
>George L. Rachor Jr. george(a)racsys.rt.rain.com
>Beaverton, Oregon http://racsys.rt.rain.com
>United States of America Amateur Radio : KD7DCX
>
>On Wed, 21 Apr 1999, Sellam Ismail wrote:
>
>> On Wed, 21 Apr 1999, Marvin wrote:
>>
>> > Hmmm, another thought ... VCF 3.0 is coming up and would be a great
place to
>> > sell off these systems if you have the time, room, and inclination to
do so!
>>
>> Yeah, good point. I'll wager that if you were to put this all in the back
>> of a pickup and drive down to VCF 3.0 for the weekend, you'd drive back up
>> with a stack of bills in your pocket and an empty pickup.
>>
>> Sellam Alternate e-mail:
dastar(a)siconic.com
>>
------------------------------------------------------------------------------
>> Don't rub the lamp if you don't want the genie to come out.
>>
>> Coming this October 2-3: Vintage Computer Festival 3.0!
>> See http://www.vintage.org/vcf for details!
>> [Last web site update: 04/03/99]
>>
>>
>
>
