test-drb May 2015

test-drb@ccmp.vtda.org

199 participants
259 discussions

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.

9 years, 7 months

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 | | | | ? |

9 years, 7 months

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

9 years, 7 months

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

9 years, 7 months

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

9 years, 7 months

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

9 years, 7 months

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

9 years, 7 months

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)

9 years, 7 months

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

9 years, 7 months

Old Control Data Drives

by bpettitx＠comcast.net

9 years, 7 months

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test-drb May 2015