- test-drb@ccmp.vtda.org - classiccmp.org

by jnc＠mercury.lcs.mit.edu

I have a very strong suspicion that the answer to this is going to be 'no', but I figured I'd do due diligence and ask... I have a backplane (one of the rodent barn group) which has a couple of finger contacts in the backplane missing. (Two came out while I was cleaning it - and I wasn't being hard on them, they must have been eaten away by the same kind of chemical action that lifted traces off the boards.) Is there any way to replace broken/missing finger contacts? I would _guess_ 'no', since it looks like the backplane blocks (the things cast out of dark green plastic, which looks like Bakelite - anyone know exactly what it is, BTW?) are cast around them (since there's a wire-wrap pin on one side, and a finger contact on the other). If the answer _is_ 'no', no biggie - all except one are on one SPC slot, and it's a 9-slot backplane, so we'd lose one SPC slot - not the end of the world. The other pin is in the UNIBUS in/out area (1/9AB), _but_ the antique hardware gods are smiling on us, it's a ground pin (of which the UNIBUS connector pinout has multiple, so we can probably withstand the loss of one). Thanks in advance for any help! Noel

11 years, 1 month

4
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Bell Labs TOPES

by silent700＠gmail.com

A new AT&T video out today showing their (at the time, the Bell System's) internal CAD and messaging system, TOPES: https://www.youtube.com/watch?v=VKbFM770dus Not a lot of info out there about it but it appears to have run on DEC-10 machines. There are a none of those to be seen in the video but there are a few AT&T/Teletype Dataspeed and Tektronix terminals. Interesting early collaboration system that probably never left Bell - did anyone here work with it? -j

11 years, 1 month

4
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PDP 11/44 avail, Landenberg, PA

by billdeg＠buzz1.com

Accepting best offer for a PDP 11/44 located in Landenberg, PA. Pickup or your arrangements to have shipped ONLY. I am not going to ship this thing. I have not powered it on - first I would need to remove the deteriorated foam behind the front grill and get a 220 adapter (i.e. clothes dryer plug). http://vintagecomputer.net/digital/PDP11-44_2nd/ The cabinet has a little rust on the outside but the computer backplane itself is in pretty nice shape and the module set appears complete. The inside bottom of the cabinet is dirty but by and large it's pretty nice. The cabinet has two tape drive bays in the front and a tape drive inside that I assume to be inoperable, the capstan roller appears to be deteriorated. Happy to answer questions here but I prefer private contact/bids/questions to - http://vintagecomputer.net/contact.cfm thanks Bill

11 years, 1 month

1
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DEC equipment looking for a new home

by dan.merrill＠earthlink.net

Here's the list of equipment. I also have the keyboards, mice, cables, media, manuals, etc. Hardware Model Number Serial Number Comments AXP 3000 Model 500S D5-PE500-AB AB2420476G very heavy (~55 lbs?) (internal boards were static bagged separately from system when moved from original location at work) MicroVAX 3100 DV-31ATB-B-A01 KA037D0073 - no other details - DEC Concentrator (FDDI) DEFCN-BC AS24103079 1 - 4 Port card and cables DEC FDDI Controller (PCI) DEFPA-UA TA52900037 never used, w/ driver disk DEC FDDI Controller (PCI) DEFPA-UA TA55000002 never used, w/ driver disk VT320 Amber monitor TA927Y4967 (?) 59333248 - in VERY GOOD condition - VRT19 Color monitor VRT19-HA Rev B01 IS336820281 very heavy (~78 lbs?) . I cannot ship anything, if you can't pick it up at my house, you'll have to pay shipping. Let me know.

11 years, 1 month

4
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Dead RF31 DSSI Disk..

by holm＠freibergnet.de

Hi all, I've got a VAX4000/300 lately to save it from the dumpster. I've cleaned the machine an powered up. It taked several tries to get the PSU working stable, it shut off itself the first ~10 tries but works stable now. (Yes I know all about forming electrolytic caps but have my own point of view regarding supplying under voltage to switching psu's) The machine is doing the Post until the final displayed letter "3" in the LED Display. The machine is equipped with 64MB RAM, an KA670, and on the QBUS with the KZQSA DSSI and the TK70 Controllers and additional am CMD CQD200. Disks are 2x RF31 one RF71 and a TK70. I currently have no console device connected to the machine, must crimp a MMJ cable first.. The Problem ist, that one of the RF31 Disks doesnt go to ready and the Fault LED lights up. What can I do to further investigate the Drive fault? Are DSSI disks starting up themselves after applying Power and ACLO or has the controller to supply a spindle start command? re those disks known to have sticking heads sometimes? I would do some test on the drive w/o the machine since I don't have any test equipment in the room where the machine now is.. Any hints? If anyone has a spare RF31 or RF71 (or similar) to sell or additional MS670 memory for an hobbyist price, please mail me. I'm in germany, europe. Regards, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583 www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741

11 years, 1 month

8
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HP-1000 and PDP computer parts available

by hpfparts＠yahoo.com

I'd like to thank everyone who responded to my recent post about my computer board collection. The amount of interest is much greater than I had expected, so it has been taking me a little bit of time to sift through emails and contact everyone. If you have not heard from me by now, I've made an error and overlooked you. Please accept my apologies and send me another query. Let me reiterate--I have no asking price for these assets--I have no idea what they're worth and I'm happy that they're going into the hands of people who will appreciate them. If you are interested in specific cards, please make an offer. There is more interest than there are cards, so the only fair way I can distribute them is on the basis of the offers. Regards and 73, Pete AC7ZL

11 years, 1 month

1
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Altair 8800 FPS games

by tom_a_sparks＠yahoo.com.au

Are there any FPS games for Altair 8800? Bonus points: ASCII WOLF3D or DOOM -- tom sparks x86? We ain't got no x86. We don't need no stinking x86!

11 years, 1 month

1
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PDP-12 Restoration at the RICM

by couryhouse＠aol.com

What a beauty! Congrats folks!Ed# Sent from my Verizon Wireless 4G LTE smartphone -------- Original message -------- From: Michael Thompson <michael.99.thompson at gmail.com> Date: 05/12/2015 4:30 PM (GMT-07:00) To: cctech <cctech at classiccmp.org> Subject: Re: PDP-12 Restoration at the RICM > > Date: Mon, 11 May 2015 10:17:41 -0700 > From: "Kirk B Davis" <kirkbdavis at hush.com> > Subject: Re: PDP-12 Restoration at the RICM > > Pictures?? :-) > http://www.ricomputermuseum.org/Home/equipment/dec-pdp-12 -- Michael Thompson

11 years, 1 month

1
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HP board id?

by jwest＠classiccmp.org

It seems over the years I acquired more than a just a few of these (two types of) boards for the HP1000. I'm pretty certain they all came from a batch of about twenty HP 1000 series systems I got that were decommissioned >from military use. They do not seem to be HP in origin, and I don't have any clue what they are for. Mostly they seem to be stuffed with large numbers of op amps and some line drivers. Perhaps just flight line testing or ATP? If no one thinks these are of any use. they will be scavenged for bus driver chips. But I'd hate to do that if they might be historical or "interesting". A few pictures of each board are at www.ezwind.net/hp-unk I tossed in the "-" because hpunk just looked wrong ;) Educated guesses? J

11 years, 1 month

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PDP-12 Restoration at the RICM

by michael.99.thompson＠gmail.com

> > Date: Mon, 11 May 2015 17:57:44 +0200 > From: Pontus Pihlgren <pontus at Update.UU.SE> > Subject: Re: PDP-12 Restoration at the RICM > On Mon, May 11, 2015 at 09:36:17AM -0600, Doug Ingraham wrote: > > I have read that there was a device that allowed an 8/I to be interfaced > to > > Omnibus memory and some machines were sold this way but I have never seen > > one. > > > > I've sen one :) which is why I wondered. I've also heard of a > straight-8 with omnibus memory. > > /P > Its called a BM812. Prints on Bitsavers at: /pdf/dec/pdp8/omnibus/BM812-I_EngrDrws_Jun75.pdf -- Michael Thompson

11 years, 1 month

1
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IBM 029 Card Punch and ASCII Machines

by robert.jarratt＠ntlworld.com

I recall back in the late 70s using an IBM 029 Card Punch to punch cards for the DECSYSTEM-20. As I understand it, the 029 was an EBCDIC machine, but of course the DECSYSTEM-20 was ASCII. Does that mean there was an ASCII version of the 029, or that there was something in the card reader software on TOPS-20 that converted EBCDIC to ASCII? Regards Rob

11 years, 1 month

10
18
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Wills (was VCF Ban...)

by r_a_feldman＠hotmail.com

>Message: 6 >Date: Mon, 11 May 2015 17:41:16 +0000 >From: tony duell <ard at p850ug1.demon.co.uk> >Subject: RE: VCF Ban, Vector Graphic cards, Wright card punch, MDS >Keyboard <snip> >My biggest worry is that my will will not be found and/or my next of kin will not >get contacted. He isn't a relative of mine, just a very close friend. He is the >beneficiary of my will and the exector, but if this is not realised he might not >get what he should. I am wondering if there is some way of ensuring he gets told >if anything should happen to me (not that I am planning anything like that, but...) > >-tony Probably the best thing you can do is let the next of kin know that you have a will and either give them a copy or tell them what your wishes are. Then put a copy of the will where it can easily be found (such as in your desk drawer). My wife and I are redoing our will and are letting our sons and my brothers know what we are planning. They all will know where to look for the official copy of the will. Bob

11 years, 1 month

6
9
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Wanted: AT&T 3B2 (buy or borrow) near Seattle

by lists＠loomcom.com

Folks, I started working on an AT&T 3B2 emulator using the SIMH platform late last year. As these things often do, it got side-tracked by life. We moved to Washington state in January, and I've been consumed with other matters since then. I'd like to finally get back to the 3B2 emulator. Having physical access to a real 3B2 would make this process much, much easier, especially one I could put custom homebrew ROMs into. If you have any 3B2s you'd be willing to let me borrow or buy, please drop me a line. I'm located about an hour from Seattle, WA in Kitsap County. Or, if you're interested in a trade, I have some PDP-11 Qbus gear I'd be willing to part with, too. -Seth

11 years, 1 month

2
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CompuServe SC-40 Progress

by b4＠gewt.net

Hello, I've managed to image some of the SC-40 drives (currently just for personal backup use due to any legal issues/possible customer data). I've found in the documentation references to a file named COUGH.DRP which seems to be the CompuServe equivalent of the TOPS-10 Monitor Calls Guide. Does anyone have a copy of the CompuServe COUGH DROPS file scurried away somewhere? It would be very useful in discerning the patches to TOPS-10 and some SC-40 extensions. -- Cory Smelosky http://gewt.net Personal stuff http://gimme-sympathy.org Projects

11 years, 1 month

1
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Dead RF31 DSSI Disk.. A508 SOLVED!

by jnc＠mercury.lcs.mit.edu

Holm Tiffe wrote: > Yes guys, it's true. > I've successfully "repaired" the drive with an careful hit from a > rubber-hammer! I am pretty blown away! Hard to believe that a disk can be fixed with that kind of treatment! But I shouldn't be. Remember that scene in one of the early Stars Wars movies where they go to make the jump to hyperspace (or something like that), and nothing happens, and Hans gets up and whacks the bulkhead in a very particular spot, and then it works? I first saw that movie with a couple of people from the MIT computer lab, and we were all convulsed with laughter at that scene. One of our mainframes had a sticky power relay, and when you hit the 'power off' on the front console, nothing would happen. So you'd walk around to the back of the machine, open a door, and give a particular box a good whack in a particular way with your fist, and it would power off. Some things just never change! Noel

11 years, 1 month

5
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Available in NY 10512 - CDC 721 Plato Terminal boxed.

by curt＠atarimuseum.com

Hi have a boxed CDC 721 Plato terminal, making room so need to sell/trade it. Its VERY heavy and would prefer someone pick it up. Please contact me off list - curtv2015 at gmail.com Thanks, Curt

11 years, 1 month

1
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Running a Z8-02 MPD on a breadboard

by spacewar＠gmail.com

Some time back I acquired a Zilog Z8-02 MPD. This is the bond-out version of the Z8 microcontroller. The normal Z8 contained 2K of internal masked ROM and was packaged in a 40-pin DIP. The Z8-02 had no masked ROM (or possibly the masked ROM was disabled), and the address and data buses for the internal ROM, along with a few clock and control signals, were brought out to the extra 24 pins of a 64-contact ceramic leadless quad-in-line package (QUIP). Typically for emulation it would be used with a 2716 EPROM, or 2KB of RAM with address and data multiplexers for a fancy emulator. The ceramic leadless QUIP package was used for bondouts from Intel and Zilog, and later, for the Intel iAPX 432 components. Later it was replaced with the square JEDEC ceramic leadless package. Note that the ceramic leadless QUIP is unrelated to the more common leaded QUIP packages used by NEC, Rockwell, and Motorola. Unlike many modern leadless packages (DFN, QFN, BGA), the ceramic leadless QUIP is intended for use only in a socket, which was made by 3M. Today the sockets are even harder to find than the chips that require them. I designed a simple QUIP adapter for use with solderless breadboards, and wired up a Z8-02 MPD along with a 28C16 EEPROM for the program memory, a 62256 static RAM, address latch, and decoder. I programmed a copy of the Z8671 Basic/Debug interpreter into the EEPROM. To my amazement, it worked the first time. Photos: https://www.flickr.com/photos/22368471 at N04/sets/72157652653732622 The last "photo" is a screen shot of Kermit talking to it. I've entered an inefficient program to search for primes, and the screen shot shows it being LISTed, RUN, and then stopped after a few primes have been found. Not shown, I printed the value of some of the interpreter's globals, to verify that the static RAM was recognized properly. (The interpreter can actually provide minimal functionality with no external memory!) While Zilog only claimed it to be a subset of Dartmouth BASIC, the interpreter does not include the FOR statement, so IMNSHO it barely even qualifies to be considered a "tiny BASIC". The competing National Semiconductor INS8073 had 2.5K of ROM, and Intel 8052AH-BASIC had 8K, so they supported more features of BASIC.

11 years, 1 month

3
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HP-1000 and PDP computer parts available

by marc.verdiell＠gmail.com

Perfect timing! My new old HP 1000 is coming in a few days and it's missing some of the cards you have. I'll take your HP 1000 cards if we can agree on price. I will contact you off-line. Marc >From: HP Friedrichs <hpfparts at yahoo.com> >Subject: HP-1000 and PDP computer parts available >I have a sizable collection of HP-1000 circuit cards, as well as a couple >of PDP cards. >They take up a lot of space in my workshop, so I'd like to find a home for >them. >Please see my web site here for a complete list of parts: >The H.P. Friedrichs (AC7ZL) Homepage >Thanks and 73,PeteAC7ZL > View on www.hpfriedrichs.com

11 years, 1 month

1
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FREE: Amiga 1084S Monitor

by slandon110＠gmail.com

FREE Commodore Amiga 1084S Monitor. You just pay shipping. Needs some soldering on the video connector and the power switch. Otherwise it works fine Located in Farwell Michigan. You can pick it up or pay shipping Steve

11 years, 1 month

1
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HV tracking across flexible PCB strips

by jules.richardson99＠gmail.com

I really couldn't think how best to word the subject. I pulled the CRT out of the HP 1331 X-Y display that I got the other day, then took all the old tape off, cleaned it up, and reassembled with new tape. It's no longer arcing around the CRT face, which is good. However, there's a flexible plastic strip running between the CRT face and the chassis which carries three lines (it's a storage tube rather than a conventional CRT) and I'm still getting periodic arcing across these lines which of course upsets the display's operation. As far as I can tell, there's no 'sandwich' (and hence glue) involved - it's just a single plastic strip with conductive traces drawn onto it. Does anyone have experience of these kinds of strips in an HV environment, and what (if anything) can be done for them when they start to fail? Possibilities seem to be: 1) Try some more cleaning, 2) Reworking with conductive paint (I wondered if one or more of the traces have gone high resistance in certain spots and this is encouraging the HV to arc between them 'upstream' of such areas), 3) Plastic itself has broken down in some way, requiring replacement; has anyone managed to make a replacement strip from scratch? Although I've not tried the actual X/Y/Z inputs yet, basic write/store/erase functionality and beam movement via the front X/Y controls seems to be working so long as the arcing isn't occurring, and it'd be a fun little gadget to get working. cheers Jules

11 years, 1 month

6
14
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HV tracking across flexible PCB strips

by jnc＠mercury.lcs.mit.edu

> From: Jules Richardson > ... "splice tape" is rated for close to 22kV. > Of course that's *through the tape* though, so although it would > insulate the conductors from the outside world, it's not clear how > effective it would be at insulating the two conductors that are only a > couple of mm apart; the tape doesn't really play a part in that > scenario, only the glue. Maybe I'm misunderstanding something, but why not apply a layer of tape immediately on top of the conductors - since a thickness of .X of a mm (through) will insulate 22KV, Y mm (across - where Y is the distance between the conductors) definitely ought to do it. Although there is the glue that holds it down - I wasn't sure if that was the glue you were referring to, or if you meant some other glue - that might not be as insulating (or maybe it is, just don't know). But, anyway, if the glue might be an issue, you'd have to apply the tape non-glue side down (and stick something like regular electrical tape to it, glue-glue, to nullify its glue on the now-up-facing side - unless you want to use that to join the two layers of the original together). As to how to get it to adhere: if you can figure out what the insulating glue was that they used originally, or some modern facsimile thereof, you could use that. Noel

11 years, 1 month

2
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FS: IBM 42U Network Rack & 8 2 U Rackmount cases- Pick up in Farwell Michigan

by slandon110＠gmail.com

Bought this for TimmyNet but its too big for what we need Its an IBM 42U Rack, Needs cage nuts Comes with 8 2 U Rackmount cases for a whole $100 Come get it out of my basement Located in Farwell Michigan

11 years, 1 month

1
0
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360/50 microcode listing

by jnc＠mercury.lcs.mit.edu

On 05/08/2015 03:50 PM, Rich Alderson wrote: > We only know of 3 complete KA10s in existence Where, if I may ask, just out of curiousity? Noel

11 years, 1 month

2
2
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VCF Ban, Vector Graphic cards, Wright card punch, MDS Keyboard

by ard＠p850ug1.demon.co.uk

> Value is always in the eye of the beholder, and price is always > and only set between buyer and seller. > > If you're hoarding stuff that has no value - then you're just a hoarder. Those 2 statements partially contradict each other IMHO. Something may not have much financial value, it does not mean that my heir does not want to inherit it. > If you're concerned that valuable stuff might be tossed after your > death, and sad that no one will inherit the valuable stuff, then > today you should be able to document and mark its value. Provided my next-of-kin gets to hear about it in time there is no problem, in that he will know what is worth saving. So my problem is to ensure that he is notified in the event of my death, and I am wondering how to do this. -tony

11 years, 1 month

1
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VCF Ban, Vector Graphic cards, Wright card punch, MDS Keyboard

by ard＠p850ug1.demon.co.uk

> > Perhaps a method we can all avoid Leicas in the Dumpster is to put a > price tag on everything before you go. Even the simplest Dumpster-tossing > cleanup person / relative understands a dollar sign. I think that means we all need to own Leicas to start with. How many would make me greedy? My biggest worry is that my will will not be found and/or my next of kin will not get contacted. He isn't a relative of mine, just a very close friend. He is the beneficiary of my will and the exector, but if this is not realised he might not get what he should. I am wondering if there is some way of ensuring he gets told if anything should happen to me (not that I am planning anything like that, but...) -tony

11 years, 1 month

2
1
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R: Re: IBM 5120 Operator Training Manual - GA34-0132-1

by supervinx＠libero.it

Great! -------- Messaggio originale -------- Da: Christian Corti <cc at informatik.uni-stuttgart.de> Data:15/04/2015 10:44 (GMT+01:00) A: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Oggetto: Re: IBM 5120 Operator Training Manual - GA34-0132-1 On Wed, 15 Apr 2015, supervinx wrote: > Do you know if somehone has scanned this manual? > A search gave no result... You're lucky! I've found this manual. I'll scan it. Christian

11 years, 1 month

25
50
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Data General Nova 3/12 and 6026 Tape Drive on craigslist

by dick＠tonkaland.com

I HAVE A 6026 TAPE FOR THE NOVA 312 SYSTEM IF YOU ARE INTERESTED.. We are located in the Minneapolis area. 952-715-1366 > At 04:06 AM 8/8/2014, Tommie Mademark wrote: >>Data General Nova 3/12 and 6026 Tape Drive in Tucson, AZ on Craigslist >> https://tucson.craigslist.org/sys/4591315871.html > > Looks like it's still available? > > http://tucson.craigslist.org/sys/5017009683.html > > - John > >

11 years, 1 month

1
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Data General Nova 3/12 and 6026 Tape Drive on craigslist

by tommie＠fox.se

Data General Nova 3/12 and 6026 Tape Drive in Tucson, AZ on Craigslist https://tucson.craigslist.org/sys/4591315871.html /Tommie My Data General stuff: http://www.datageneral.org/

11 years, 1 month

2
1
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MMJ Cabling between VAX4000/300 and VT420

by holm＠freibergnet.de

Hi guys, I have to make a console cable for the VAX4000/300 and an VT420 Terminal. How are the pins to be connected? One to One or with an rollover (1-6,2-5,4-3)? Regards, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583 www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741

11 years, 1 month

2
1
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oddball (XT PC-era?) keyboard - "dejag" etc controls

by jules.richardson99＠gmail.com

Rescued a keyboard from the dump earlier which is about the same style/size as an IBM model F, only a darker grey color (and not a buckling spring mech). Layout-wise, there are no F-keys at all, but keys on the numeric keypad are labeled things such as 'pan', 'curs', 'local', 'dejag', 'vern', and then there are eight status LEDs above the keyboard area (on-line, local, interp, busy, pan, cursor, dejag, 2nd). Does this critter sound familiar to anyone? I didn't see anything at the dump that it obviously belonged with, but I may return tomorrow and double-check, and knowing what I was looking for might be helpful. Of course it's possible that whatever it hooked up to is long-gone, or even had already been hauled off from the drop-off area for processing. cheers Jules

11 years, 1 month

11
20
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HP-1000 and PDP computer parts available

by jnc＠mercury.lcs.mit.edu

> From: HP Friedrichs > I have .. a couple of PDP cards. > Please see my web site here for a complete list of parts: Here's the URL: http://www.hpfriedrichs.com/hpfparts/hpfparts.htm About the DEC cards: the M8043 is a DLV11-J (a four-port serial card), and the M8059 is an MSV11-L (up to 256KB memory card - but I'm trying to get that one). Noel

11 years, 1 month

1
0
0 0

MMJ Cabling between VAX4000/300 and VT420

by cctalk＠beyondthepale.ie

> > I have to make a console cable for the VAX4000/300 and an VT420 Terminal. > How are the pins to be connected? One to One or with an rollover > (1-6,2-5,4-3)? > As far as I understand it, pretty much all MMJ sockets are wired the same and the crossover between transmit and receive normally happens in the cable so you need the rollover. Even if this is not true in 100% of cases, it does appear to be true at least in the case of connecting terminals to hosts. Regards, Peter Coghlan.

11 years, 1 month

2
1
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HP-1000 and PDP computer parts available

by hpfparts＠yahoo.com

I have a sizable collection of HP-1000 circuit cards, as well as a couple of PDP cards. They take up a lot of space in my workshop, so I'd like to find a home for them. Please see my web site here for a complete list of parts: The H.P. Friedrichs (AC7ZL) Homepage Thanks and 73,PeteAC7ZL | ? | | ? | | ? | ? | ? | ? | ? | | The H.P. Friedrichs (AC7ZL) HomepageThe Homepage of H. P. Friedrichs | | | | View on www.hpfriedrichs.com | Preview by Yahoo | | | | ? |

11 years, 1 month

1
0
0 0

RT11 / RSTS-E games

by keith＠saracom.com

Re: RT11 / RSTS-E games I obviously have done something wrong when moving files about etc. Hence depending on which way you get there, they may not link. For now all the games I have are available here: http://www.saracom.com/pdp11/pdp11.htm thanks Max ------------------------------ Message: 35 Date: Thu, 7 May 2015 19:42:52 -0400 From: Ethan Dicks <ethan.dicks at gmail.com> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: Re: RT11 / RSTS-E games Message-ID: <CAALmim=yauqgpg7hc_4vN=1d41WtEA=MPS0P8=4wjNav-4c3TA at mail.gmail.com> Content-Type: text/plain; charset=UTF-8 On Thu, May 7, 2015 at 5:34 PM, Peter Coghlan <cctalk at beyondthepale.ie> wrote: > Lyle Bickley wrote: Ethan Dicks <ethan.dicks at gmail.com> wrote: This one? Appears to be a bad link :( Try http://pdp11.saracom.com/games/spcinv.zip [1] instead. Nice catch. Thanks! -ethan Links: ------ [1] http://pdp11.saracom.com/games/spcinv.zip

11 years, 1 month

4
3
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Xerox 820 II Baltimore MD area

by davebrougham＠comcast.net

I have a Xerox 820-II with CP/M 2.2, monitor, dual disk drive, keyboard, daisy wheel printer, manuals, and cables. Wondering if anyone is interested in saving it from the dump, OBO. Bad news, I powered it up recently and the screen flickered and jumped for about 5 minutes before the wisp of smoke. The visible damage is a film capacitor on what looks like a power supply board in the monitor. Five years ago it powered up and was working as far as I could tell. Baltimore, Maryland area (USA). Not a list subscriber, will check list daily for a while, then weekly... Dave

11 years, 1 month

2
2
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Vermont Research 5017

by t.gardner＠computer.org

Anyone have any literature on the Vermont Research 5017? It was a cartridge drive shipped from 1975 until 1985 probably rebadged and sold under some system manufacturer's label. Most likely the first HDD to use embedded servo in a production drive. Tom

11 years, 1 month

2
2
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Winners for the Type 'n Run "code golf" contest on RetroBattlestations

by fozztexx＠fozztexx.com

I just posted the winners for the Type ?n Run contest for April on RetroBattlestations. Lots of very interesting programs that people submitted. Entries came in for a variety of computers like the IBM PC, the BBC Micro, the TRS-80 CoCo, and even one for the Texas Instruments CC-40! Check out all the entries, and maybe submit a program of your own! The Type ?n Run contest is an ongoing challenge with winners selected every month. http://redd.it/35ht9w -- Follow me on twitter: @FozzTexx Check out my blog: http://insentricity.com

11 years, 1 month

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IBM 029 Card Punch and ASCII Machines

by COURYHOUSE＠aol.com

naw.... the card reader read punches and the reader driver made it readable on your machine! ! there were some for hp-2000 also and ho 3000 we would love to find one for the smecc museum here in az if anyone has an HP setup! Ed Sharpe archivist for SMECC In a message dated 5/10/2015 1:56:51 A.M. US Mountain Standard Time, robert.jarratt at ntlworld.com writes: I recall back in the late 70s using an IBM 029 Card Punch to punch cards for the DECSYSTEM-20. As I understand it, the 029 was an EBCDIC machine, but of course the DECSYSTEM-20 was ASCII. Does that mean there was an ASCII version of the 029, or that there was something in the card reader software on TOPS-20 that converted EBCDIC to ASCII? Regards Rob

11 years, 1 month

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MacPlus video on YouTube

by terry＠webweavers.co.nz

Just another video showing one of my units for anyone who might be interested. I was lucky to get this one in such a clean undamaged condition. It did require some work to get it into shape for this video though. Bad solder joints on the analogue board...it's almost a standard feature of these machines, just like leaky caps in the later models! Anyway... https://youtu.be/v_m2sfcDDvg Terry (Tez)

11 years, 1 month

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Old Control Data Tape Drives

by bpettitx＠comcast.net

Chuck Guzis wrote: Really great (7 track) drives; substantially over-engineered as compared to, say, a 65x drive. The 604 wasn't quite as fast as the look=alike 607, but nothing to sneeze at. If you've got 160A, 3000-series or 6000-series machine (and associated controller), it'd be a really great drive to have. --Chuck ____________________________________________________________ These were great tape drives. The 604 was 75ips versus 150ips for the 607. Both drives were 200/556/800 bpi 7 track units. The weight was a killer. But they were extremely reliable, easy to work on and easy to interface. Al has manuals on them (I know because I loaned them to him) and I have a lot spare parts if someone wanted to try to get them working. These would be a good choice for recovering old 7 track tapes. They used vacuum tensioning columns and vacuum capstans. So very little contact with the magnetic slurry side of the tape. Billy Pettit

11 years, 1 month

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Old Control Data Drives

by bpettitx＠comcast.net

Chuck Guzis wrote: Really great (7 track) drives; substantially over-engineered as compared to, say, a 65x drive. The 604 wasn't quite as fast as the look=alike 607, but nothing to sneeze at. If you've got 160A, 3000-series or 6000-series machine (and associated controller), it'd be a really great drive to have. --Chuck ____________________________________________________________ These were great tape drives. The 604 was 75ips versus 150ips for the 607. Both drives were 200/556/800 bpi 7 track units. The weight was a killer. But they were extremely reliable, easy to work on and easy to interface. Al has manuals on them (I know because I loaned them to him) and I have a lot spare parts if someone wanted to try to get them working. These would be a good choice for recovering old 7 track tapes. They used vacuum tensioning columns and vacuum capstans. So very little contact with the magnetic slurry side of the tape. Billy Pettit

11 years, 1 month

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360/50 microcode listing

by jnc＠mercury.lcs.mit.edu

> From: William Donzelli > We, the big iron collectors, do not share this information on any sort > of registry. We are a secretive bunch. Why is that, can I ask? I mean, it's not like a thief's going to come in and steal the thing (which is indeed the reason why collectors in other areas are often secretive) - it would take a truck and a crane, for most models! > From: Liam Proven > Have you read Lawrence Wilkison's account of rescuing an S360/20 in NZ > when he was a student? Cool story; thanks for the link - but the page says it was a 360/30. (The smallest 'real' 360 - the 360/20 was a lobotomized 'sorta' 360/.) Noel

11 years, 1 month

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360/50 microcode listing

by aek＠bitsavers.org

CHM was able to obtain volumes 18-20 of the IBM 2050 drawings, which are the microcode charts and ROS dump. I got them scanned and uploaded yesterday to http://bitsavers.org/pdf/ibm/360/fe/2050 This was one of the things that I had been trying to locate for a while now.

11 years, 1 month

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PDP-12 at the RICM

by michael.99.thompson＠gmail.com

The RICM rescued a very nice PDP-12 today. Pictures and details to follow. -- Michael Thompson

11 years, 1 month

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PDP11GUI v1.46

by j_hoppe＠t-online.de

PDP11GUI is at v1.46 now. Among others I fixed an annoying bug, which prevented proper terminal output when running certain diagnostic paper tapes: Filling <NUL> chars were sometimes interpreted as backspace! Load from http://retrocmp.com/tools/pdp11gui As ever, any feedback is welcome, Joerg

11 years, 1 month

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Plessey PM-D11/SPC-1 backplane documentation needed

by jnc＠mercury.lcs.mit.edu

> From: tony duell >> I have a Plessey PM-D11/SPC-1 backplane here > How many slots? I assume it's hex height. What (if anything) are the > power input connectors? 9; yes; it has the standard 9-pin connector as used on the 11/05-10, and the early /40s and /45s. (FWLIW, the documentation for the PM-F11 says that _it_ comes with either the same 9-pin connector power harness, or the harness with the newer 15-/6-pin connector pair, and gives part numbers for each.) The harness of this one is subtly different, though - instead of all fast-on tabs at the backplane end, there is a DuPont header on the backplane (looks like 10 pin), and a bunch of the pins on the large 9-pin connector are connected to that (not just ACLO and DCLO, but e.g. there are a pair which are connected to +5V, and another pair to ground (the latter two also go to fast-on tabs). > Is there any reason to assume it's not a clone of a standard DEC > backplane ... the 'SPC' part of the name suggests a Unibus peripheral > backplane Oh, I'm sure it's _some_ form of SPC backplane - it has the NPG jumpers from CA1 to CB1 on all 9 slots, for instance. And it has a bunch of wires running >from 1A/B down to the CDEF part, and then back from CDEF to 9A/B. And the NPG is routed from 1A down to CA1/CA2, and then back up to 9A. But I'm trying to figure out exactly what sort of SPC backplane it is. E.g. it looks like slots 2-8 _might_ be MUD (the signals from 1A/B are bussed across all those slots on A/B, over to 9A/B). But without documentation, or a lot of ohm-meter work... Noel

11 years, 1 month

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Plessey PM-D11/SPC-1 backplane documentation needed

by jnc＠mercury.lcs.mit.edu

Hi, all, I have a Plessey PM-D11/SPC-1 backplane here, and I'm interested in finding some documentation for it. I looked online, but couldn't find anything? This site: http://www.compsy.de/gebr-vax/repman_verl.htm seems to list one, and does apparently 'rent' documentation, but I'm not sure they're ready to rent something to someone on another continent. (If someone in Europe can assist in dealing with them, I'd be extremely grateful.) I do have a manual for the vaguely similar PM-F11/SPC backplane (which I would be happy to scan promptly if anyone has a need for it; otherwise, it will get scanned when I obtain a round tuit), and that, plus an ohmmeter, would probably allow me to eventually figure out the PM-D11, but I figured I'd look and see if I could save all that work, and put it into something else... :-) Noel

11 years, 1 month

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Z-machines for PDP-11 (was Re: RT11 / RSTS-E games)

by ethan.dicks＠gmail.com

On Fri, May 8, 2015 at 5:43 AM, Johnny Billquist <bqt at update.uu.se> wrote: >> The Z-machine for RT-11 that Infocom released only handled v3 images. > > I only knew of the V1 version, for the original Zork I. I never knew that > Infocom released anything past Zork I for RT-11. I can't seem to find the definitive catalog, but I know there were folio packaging of several of the titles available for sale. I saw Starcross hanging on the wall at the Digital Store in Columbus, OH (back when there _was_ a brick-and-mortar store), and I am reasonable certain there were others, definitely more than just the V1 Zork. >> You can run a v3 game comfortably in 48K bytes... >> As for the PDP-11, one _could_ write a split-I&D interpreter for >> larger games... > > Um? Where have you been? ZEMU have been around for about 15 years now. It > runs all V1 to V8 games, and runs under both RT-11 and RSX. I think I forgot ZEMU has support past V5. My apologies. > On MIM:: (once more) > .zem/li/sy > -- System games -- > Game Release Serial Inform Z-Machine > ADVENT 5 961209 6.05 5 > ZDUNGEON 13 040826 6.14 5 :-) > ZTREK 1 000229 6.21 5 Ooh... that's right... there's an implentation of Star Trek on the Z-machine. I'll have to go grab that to see which version it's based on. Personally, I'm used to the one that was in Dave Ahl's "101 Computer Games", the one that has the short range scan that represents each item with up to three chars and empty locations with all spaces (as opposed to a simple grid with 1 char per filled spot and, ISTR, a '.' for empty locations). When I get the opportunity (later this weekend I think) I will check my backups for the RSTS/E mod I was mentioning. If the RT-11 ZEMU doesn't compile on RSTS/E as is, it should be a 1-line mod. -ethan

11 years, 1 month

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RT11 / RSTS-E games

by john＠yoyodyne-propulsion.net

Anyone got any RT11/RSTS-E games? I'm back on with my project to recreate the PDP-11 that I goofed around with when I was a kid. (Its accessible via the bbs... bbs.cortex-media.info 4223) I have 2.52 version of Dungeon, and a version of Star Trek. Anyone got anything else? I'm still looking for Oregon Software Pascal as well... Thanks! Mark

11 years, 1 month

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360/50 microcode listing

by jnc＠mercury.lcs.mit.edu

> From: Jon Elson > Well, first, rotary converters draw a LOT of imaginary power (in other > words, they have an awful power factor) and so the line current can > become MUCH higher than you would expect. > ... > We tried to rig up a phase converter scheme to run the motor-generator > set on a 370/145 in a guy's house, and it did NOT go well. he only had > a 60 A 240 V service, and the imaginary current was over 60 A! Had to Google 'imaginary power'... Not a lot of experience with high-power AC stuff! :-) ('Imaginary power' is probably not the best term to use, because there are actual currents involved; I like the 'reactive power' name better.) The article I read said that in reactive load which is high in inductance (which is, I assume, the source of the high reactive load in rotary convertors - or am I confused - a common happening, I concede :-), judicious application of capacitance can reduce the reactive load. Why isn't this used with rotary convertors to reduce their reactive load? Any idea what the active and reactive powers/currents were in that attempted installation? Noel

11 years, 1 month

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