test-drb June 2002

test-drb@ccmp.vtda.org

205 participants
502 discussions

by Andreas.Freiherr＠Vishay.com

Hello again, not quite the kind of things I am collecting, so I need help with finding out what precisely this is, and if somebody might be looking for it. I saved a couple of boards from getting scrapped, and if nobody wants them in total, I'll be happy with the chips alone (all the significant ones are in sockets, so I needn't even solder to harvest ;-). So, heads up please if you know something about one of these boards or want to have one. Sorry, no pictures available (yet). According to date codes, all of the boards must be from late 1983 or 1984. The boards _look_ OK, but I cannot test any of them. 1) Ungermann-Bass ISA board, the old extra long format (approx. 340mm or 13.4"), appears to be a 2261A type Ethernet adapter (?), has 18 DRAM chips, Intel 80186, C82586, NEC D8255, 24-pin chip with heat sink (glued on, so I cannot read what's on the chip itself). At the panel, there is a 15-pin sub-D female connector with posts for retaining screws (didn't someone mention lately that some manufacturers had different opinions about the slide-lock retainer for AUI interfaces?) and a red 5mm LED. 2) Ungermann-Bass motherboard, approx. 385mm * 305mm (15.15" * 12"), marked "LPB3 6600" or "LPB3 MODEL 6410", with Z80A CPU, 2 Z80 CTCs, 64kb DRAM (32 * 4116), EPROM (I guess a 2716, did not peel off the sticker yet). Near the center of one of the long edges is a 10-pin power connector: +5, +5, GND, GND, +12, -12, GND, +24, -5, GND. Along one of the short edges are three 50-pin Berg-style connectors (no recognizable description, but two of them appear to be driven mainly by a bunch of 74LS374s). At opposite corner: 10-position LED array, 8-position switch array. Along the other long edge, an I/O board can be fitted, and there are two different boards fitted to the two motherboards I have: 2a) "MODEL 6402A": 2 * RS232, female 25-pin sub-D connector, labelled "SERIAL PORT 1" and "SERIAL PORT 2"; 1 * IEEE 488 (labelled so), real-time clock (guess so, there is an OKI MSM5832 chip, a crystal, and a 3.6V NiCd battery). Other chips: Z80ADART, Z80APIO, TMS9914A (IEEE488 controller), Z80ADMA. 2b) "MODEL 6401": 4 * RS232, female 25-pin sub-D connector, labelled "SERIAL PORT 1" through "...4", then "PARALLEL PORT 5" and "PARALLEL PORT 6". Chips: Z80APIO, 2 * Z80ASIO. 3) Qbus-like board, supposedly a CPU, handles made by DEC, board is 4 slots wide, labelled "PCS" (is that PCS CADMUS?), has Motorola MC68000L10, 4k SRAM (2*6116), 16k EPROM (2*2764), clock chip (MM58167), battery. Between the handles, there are two 40-pin 3M connectors (Berg style). The EPROMs have stickers saying MINITOR MINITOR R900.123 R900.123 E9 2.200LO E10 2.200HI Any hints? - In case you want to trade: I am still looking for a sound card for my friend's IBM PS/2 (Microchannel). I cannot buy one of those currently offered on eBay because they again won't ship outside U.S. - darn! -- Andreas Freiherr Vishay Semiconductor GmbH, Heilbronn, Germany http://www.vishay.com _______________________________________________ cctech mailing list cctech(a)classiccmp.org http://www.classiccmp.org/mailman/listinfo/cctech

22 years, 6 months

1-800-DIGITAL

by gunther＠aurora.regenstrief.org

Hi, well, I made the call, tried to that is. Because of the bad power cable in the old BA23 enclosure. You were supposed to get a replacement when calling this number. However, as could have been expected, that number is no longer in service. The compaq number you are redirected to get's you into the world of compaq^H^H^H^H^H^HHP PC products. Not exactly where one would expect anyone to know about old promises that DEC made. I will make myself a replacement cable by cutting the old one and then just interposing wires with pigtails and a bit of electric tape around. I'll also use thicker cable. How hard can it be. -Gunther -- Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org Medical Information Scientist Regenstrief Institute for Health Care Adjunct Assistant Professor Indiana University School of Medicine tel:1(317)630-7960 http://aurora.regenstrief.org

22 years, 6 months

The prices on ebay are going UP

by xds_sigma7＠hotmail.com

I thought such things were in some way against Ebay's user agreement or something? Just wondering... Will J _________________________________________________________________ Join the world’s largest e-mail service with MSN Hotmail. http://www.hotmail.com

22 years, 6 months

Making an MMJ to DE25-F adapter

by Antonio.Carlini＠riverstonenet.com

>Unfortunately, my MMJ to DB25 adapter is made in such a way that I can't >see inside to tell which wires go to which pins. All I can do is assume >that the wire colors are the "standard" colors, i.e. green/red in the >center, black/yellow one pair out, etc. You can do a lot better than assume: use a multimeter and see what goes where! If you don't have a meter, try a bulb, a battery and some wires :-) Unless you enjoy guesswork, wiring details are to be found in the OpenVMS FAQ http://www.openvms.compaq.com/wizard/openvms_faq.html >I found a source to sell me an adapter to do exactly what I need (this >adapter is what I thought I was getting in the first place, I didn't >realize I was getting a "make it yourself kit"). So I figured I might as >well order it and save myself a lot o f headaches. It should be here >tomorrow. But you are missing out on so much fun :-) Antonio

22 years, 6 months

drive "hood" parts[was: RE: DEC SDI drives]

by xds_sigma7＠hotmail.com

Don't leave out the junkyard! I'd bet I could get them from Subarus like mine for free, they don't charge for stuff like emblems, etc... At worst, I'd say the junkyard I go to would want $1.49 for one, plus tax... Will J _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com

22 years, 6 months

[CCTECH] PDP-11/60 in UK on eBay

by Antonio.Carlini＠riverstonenet.com

> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2028620247 The seller is Swan Computers. This was up for 500UKP the other week and attracted no bids. They also appear to have parted out a VAX 8650 and a PDP-11/70 too. OTOH it seems to be reasonably common practice when acquiring the Nth large machine to strip the useful bits (boards, cables, cab kits, PSUs etc.) and ditch the cabinet to save on storage costs. So maybe these boards have been out of a machine for quite a while now. Antonio

22 years, 6 months

[CCTECH] Cards to Identify

by pete＠dunnington.u-net.com

On Jun 3, 15:23, Andreas Freiherr wrote: > yes, I also remember having seen PDP-11/VAX peripherals controlled by a > 68000. However, with this board, I am not quite sure if it is Qbus or > UNIBUS at all. I'd have to trace the connections, but before doing so, > my suspicion is that this was some different kind of system with the > Motorola centipede being the main processor. > > And, no, I did not notice any particular driver chips like the 1488/1489 > (or maybe 75188/75189, or some of those 8-pin chips from the DLV-11/J, > or...). The absence of such chips together with the large number of pins > makes me think this might be a separate memory bus, similar to what the > MicroVAX II had. To me, this sounds like a CADMUS 68000 CPU, made in Germany. I've not had much experience of them, but I've seen a couple. They used a 68000 (or maybe 68010), on a quad-height card, in a Q-Bus backplane. It's a long time since I've seen one, but I seem to remember an over-the-top memory connection, not unlike a microVAX. I do remember that a lot of the support boards didn't have handles, and tended to sag, so that they had to have bits of folded card and BluTak inserted to stop them shorting together after a few years. The CADMUS systems I saw ran UNIX, a System III derivative, I think, and were used in the Department of Building at the Heriot-Watt University. I've just had a look to see if I still have any Cadmus docs, but I can't find any :-( -- Pete Peter Turnbull Network Manager University of York

22 years, 6 months

What was that mystic Commodore 6509 computer?

by gunther＠aurora.regenstrief.org

There was this computer Commodore was going to make and then pulled out of the market. It was based on the 6509 CPU, I guess right before the 6510 / C64. I thought then as now that the case was especially nicely shaped (such beautiful round corners, reminescent of my 91 Chevy Caprice.) I still remember when all those boards came onto the surplus market in a German electronics mail order catalog. When Commodore pulled them all from the market. I actually bought one back then, because I needed a replacement SID or something like that (I don't remember.) So, now I was looking for something in my old junk box and that board fell back into my hands. I think I don't need it any more, may be there is some collector here who would appreciate that board and bring it to life? Nothice that this is not a running system. It's just a mother board and all ROMs are pulled. The 6509 is on there and I'll be darned if it wasn't still good. cheers, -Gunther -- Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org Medical Information Scientist Regenstrief Institute for Health Care Adjunct Assistant Professor Indiana University School of Medicine tel:1(317)630-7960 http://aurora.regenstrief.org

22 years, 6 months

drive "hood" parts[was: RE: DEC SDI drives]

by rigdonj＠cfl.rr.com

At 12:14 PM 6/3/02 -0400, you wrote: >> From: Andreas Freiherr >> >> Gunther Schadow wrote: >> > >> > ... Then you can open the hood just like >> > in my car, check the alternator belt and I just haven't found the >> > oil dip stick yet :-). >> >> My trouble with it is that the "hood" always bounces back on the rear >> part of my head, because the pressurized gas retainers have lost their >> magic smoke in the cause of the years. I am convinced it's impossible >> and perhaps even dangerous to repair (i.e., to repressurize) them, but >> is there a known good source for spare parts? Auto parts houses carry replacement struts. I bought a pair from Discount Auto Parts. I think the cost was less than $8 each but that was a couple of years ago. Joe

22 years, 6 months

Commodore 128 LED re-install???

by fernande＠internet1.net

Okay, How do I re-install the double LED power indicator? It doesn't have a screw holding it, it doesn't seem to push into anything, and I have a clear piece of plastic that I don't have a clue about. How does this thing stay in place? When I took it apart I think it pulled out of the top part of the case. Chad Fernandez Michigan, USA

22 years, 6 months

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test-drb June 2002