Re: DEC UNIBUS and use of cassette
> On 22 Aug 2021, at 03:49, cctalk@classiccmp.org wrote: > > Yes and no. There is the TA11 Magnetic Tape Cassette System, which used the > TU60 Dual DECasette Transport (I need to create a page for that in the > CHWiki), but it uses a special controller card, the TA11 Magnetic Tape > Cassette controller: CAPS-11 was the OS for this IIRC. Huw
Re: Ultrix-11
On 8/21/21 11:50 PM, Jay Jaeger via cctalk wrote: On 8/17/2021 1:39 PM, Paul Koning via cctalk wrote: I thought V7M and Ultrix were entirely diferent and unrelated things. At least on the Pro, DEC released a betal version of the one (which I tried when it came out) and then canceled it and replaced it by a release of the other. I forgot which came first, other than that the beta was really clunky. As in, a "vi" that didn't do real screen updates... paul On Aug 17, 2021, at 2:16 PM, Al Kossow via cctech wrote: images up under http://bitsavers.org/bits/DEC/pdp11/floppyimages/rx50/V7M-11-V1.0_6_USR_RX50-QJ083-H3.zip They are indeed different. V7m is based on 7th edition A&T UNIX, whereas Ultrix was based in BSD. JRJ Actually, Ultrix-11 is based on V7m and Ultrix032 is based on BSD 4.x. bill
Re: DEC UNIBUS and use of cassette
> On Aug 21, 2021, at 11:48 PM, Jay Jaeger via cctalk > wrote: > > ... > There were third party cassette systems, typically using some kind of digital > cassette format, that you could hook up with a terminal. One was made by > Sykes that I played with once upon a time: > > http://www.bitsavers.org/pdf/sykes/brochures/Sykes_3000_Cassete_Brochure.pdf And of course some were built right into the terminal; the TI Silent 733 comes to mind. That was around 1974. My guess is that it was intended to replace paper tape that was a popular terminal capability at the time (on the Teletype 33 and 35). Those things actually had an API of sorts; I remember playing with it a bit but it was never interesting enough to do serious work. The fact that it was limited (by the comm line) to 30 cps was not a whole lot of motivation. paul
Re: Replicating IBM SLT/MST card interconnect
There wasn't much advice to be had on making modern connectors that interoperate with the header-like connectors used by IBM SLT cards, so I did my best to come up with some on my own. This design appears to be functional, but I've only ohmed it out so far, not put it to any kind of extended use: https://github.com/stepleton/SLT_interconnect The hard part now will be getting my hands on 18 AWG flat ribbon cable that doesn't cost a fortune. Anyhow, I hope this might be of use to some folks out there. --Tom On Thu, Jul 29, 2021 at 1:21 PM Tom Stepleton wrote: > Hi cctalk, > > I'm looking to replicate the 24-contact connector system that IBM used on > SLT and MST cards for many years. Has anyone done this before? > > The best photos of this connector that I can find online are on this page: > > http://techandtrouble.blogspot.com/2014/04/happy-50th-system360-pt5-anatomy-of-slt.html > I haven't searched Bitsavers documentation extensively for IBM > specifications, but I've seen some details around page 54 of this document: > > http://www.bitsavers.org/pdf/ibm/logic/SY22-2798-2_LogicBlocks_AutomatedLogicDiagrams_SLT,SLD,ASLT,MST_TO_Oct71.pdf > > I'm interested in reproducing both polarities of this connector: plug and > socket. Also, even though the most familiar use of this connector is for > board-to-board interconnect, I'm most interested in wire-to-board > interconnect. IBM used this method for DC power connectors in its 5100, > 5110, and 5120 computers. Here are images of this specific connector: > http://stepleton.com/connector/ > taken as still images from a YouTube video on the IBM 5120 by Jerry Walker > (https://www.youtube.com/c/JerryWalker-JMPrecision/videos). > > I've designed and built a device that monitors DC power supply voltages > for overvoltage and undervoltage excursions and cuts off all power rails if > any voltage goes out of spec. I hope to use it to protect my own IBM 5100 > from major power supply faults like the one CuriousMarc encountered with > his 9825T: > https://www.youtube.com/watch?v=b-eN93L6yX8 > > In order to put my device between my 5100's power supply and the logic > card backplane, I need to recreate a plug and a socket so that I can > fashion a cable that goes out to my device. If anyone has created > dependable modern versions of these connectors, would you mind sharing any > pointers? > > Thanks for any help, > --Tom >
C.mmp OS
The answer to the question is Hydra I believe.
Re: C.mmp OS
On Sun, 22 Aug 2021 at 17:53, Mark Kahrs via cctech wrote: > > The answer to the question is Hydra I believe. But since you are not replying to anything, we don't know what the question _was_ ... -- Liam Proven – Profile: https://about.me/liamproven Email: lpro...@cix.co.uk – gMail/gTalk/gHangouts: lpro...@gmail.com Twitter/Facebook/LinkedIn/Flickr: lproven – Skype: liamproven UK: +44 7939-087884 – ČR (+ WhatsApp/Telegram/Signal): +420 702 829 053
Re: C.mmp OS
The answer to the question is Hydra I believe. On Sun, 22 Aug 2021, Liam Proven via cctalk wrote: But since you are not replying to anything, we don't know what the question _was_ ... If "drugs, sex, and rock'n'roll" is not the answer, then you are asking the wrong question.
Tektronix XpressWare 8.1
Bitsavers has 6.3 (thank you Al) but I'm trying to push my luck and find 8.1 for this XP421CH Xterm. Anyone know of where it can be found? -- personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckai...@floodgap.com -- FOOLS! I WILL DESTROY YOU ALL! ASK ME HOW! -- "Girl Genius" 8/29/07
Re: Tektronix XpressWare 8.1
On 8/22/21 19:16, Cameron Kaiser via cctalk wrote: Bitsavers has 6.3 (thank you Al) but I'm trying to push my luck and find 8.1 for this XP421CH Xterm. Anyone know of where it can be found? Well There's this: http://bio.gsi.de/DOCS/NCD/www.technogoths.demon.co.uk/tekxp400/node3.html and there's this: http://www.docsbox.net/V81106.tgz Please don't kill my server. It's been a long long time since I had the XP400D, and I don't think I ever tried connecting from Windows, so you're kind of on your own. Good luck! Doc
Re: C.mmp OS
Fred Cisin wrote: > If "drugs, sex, and rock'n'roll" is not the answer, > then you are asking the wrong question. I'm not very interested in drugs or rock'n'roll, but I would very much like to see the software for the UCLA Simgma-7!
