test-drb

test-drb@ccmp.vtda.org

101090 discussions

by jnc＠mercury.lcs.mit.edu

> From: Al Kossow > Date: Mon Aug 9 14:05:07 CDT 2021 Wow! That was _amazing_ speed, to get that uploaded so quickly (even if you had already scanned it in), considering I only posted my request at 14:32 EDT! Thank you very, very much: that allowed me to complete the DQ11 page on the CHWiki: https://gunkies.org/wiki/DQ11_NPR_Synchronous_Line_Interface The MM was unclear on many points (including the backplanes; the MM says, in 2.3.1.2, "double-system unit", making it sound like the option version uses a 9-slot backplane, but it's actually two 4-slot units). You aren't by any chance sitting any DM11-AA manuals, are you? :-) (The weirdest interface I've ever seen; the shift registers are kept in main memory, resulting in many DMA cycles _per character_.) Noel

4 years, 3 months

DQ11 prints needed

by jnc＠mercury.lcs.mit.edu

Anyone have a set of DQ11 prints? The DQ11 MM is missing some important info, which is apparently only on the prints. Noel

4 years, 3 months

r.stricklin: regarding SysV/68 and SysV/88 tapes

by matti.nummi＠hotmail.fi

I have tried to reach You Raymond. Presumably You have following tape images: Sys V/68 Graphic Services Extension R3V6 XW02.10(IR06) Sys V/88 R3.2V1.2C BOS Obj UZ88.01 We are trying to build a X environment with some success already for Motorola MVME unix computers. These tapes could help. Can You comment on this (privately). BR Matti Nummi matti dot-char nummi at-char hotmail dot-char fi

4 years, 3 months

Bell vs gray. The Telephone wars and invention.of telephone etc. History chan. tonight check your TV schedule.

by couryhouse＠aol.com

Bell vs gray. The Telephone wars and invention.of telephone etc. History chan. tonight check your TV schedule. Sent from the all new AOL app for Android

4 years, 3 months

Help reading a 9 track tape

by len＠shustek.com

> On Aug 5, 2021, at 8:39 AM, Jay Jaeger via cctech <cctech at classiccmp.org> wrote: > I know Paul well (we were contemporaries at U. WI). He does not do that very often. He did not indicate any issue with a fire at the building that contains his collection when I last spoke with him. > > He does not actually read "blocks". He reads the tape in an *analog* fashion, and then processes the results with software. That is how he recovered the IBM 1410 system tapes and diagnostics, for example. > > To be honest, I doubt that this content would be such that he would be likely to volunteer. Some years ago, inspired by Paul Pierce's earlier program in Java, I wrote similar software in C to decode the analog waveforms from tapes in a variety of formats: 7-track NRZI, 9-track NRZI, PE, and 6250 BPI GCR, and 6-track NRZI for Whirlwind. https://github.com/LenShustek/readtape As a one-time physics major, I *am* interested in the Schoonschip content. I've offered to James Liu to give it a go if he can't get someone like Chuck to read it in a more straightforward fashion.

4 years, 3 months

VCF west is happening this weekend

by dkelvey＠hotmail.com

It will be at the CHM. The museum is still closed but VCF will be happening. To be consistent with current Santa Clara covid conditions, bring your mask. see: https://vcfed.org/wp/festivals/vintage-computer-festival-west/ I hope to see you all there. Dwight Vintage Computer Festival West 2021 ? Vintage Computer Federation - VCF<https://vcfed.org/wp/festivals/vintage-computer-festival-west/> Updated 2021-05-23. VCF West is for everyone! Computer geeks, families/children, students, collectors, IT professionals, curious onlookers? VCF West 2021 vcfed.org

4 years, 3 months

Help reading a 9 track tape

by jimliu＠umich.edu

Thanks for feedback and offers to assist. I received the tape from one of the maintainers of Schoonship at CERN, and it was probably made around 1978 at SLAC. For some background, Tini Veltman developed Schoonship in the 1960's at CERN on the CDC 6600. My understanding is that he more or less insisted on coding in assembly since he thought FORTRAN or other high level languages would just get in the way and slow things down. The code was maintained by Veltman and Strubbe well into the 1970's, but its future was held back by being so closely tied to CDC hardware. In the mid 1970's, Strubbe began a conversion of Schoonschip to IBM S/360 and S/370. It was sort of a curious technique, as far as I gathered. The idea was to first translate CDC COMPASS source to an intermediate PL/I like language. But then, instead of using the IBM PL/I compiler, a bunch of macros were developed to implement the PL/I like language in IBM assembly. This conversion was never fully completed for reasons unknown to me. Later on, when Tini joined the University of Michigan (that's where I'm located), he realized that Schoonschip needed to be updated. But the update was ... instead of CDC assembly he decided on m68k assembly. (At this time, in the early 1980's, C probably would have been the natural language of choice.) Moreover, he insisted on developing his own toolchain (assembler, linker, etc). This was before my time at Michigan, but basically he ported Schoonschip to just about all the m68k machines of that era (Sun, Atari, Amiga, Mac, NeXT, and others I am not familiar with). We have a pretty good collection of m68k code (http://www-personal.umich.edu/~williams/Vsys/index.html), but nothing earlier. Getting back to the tape, I'm pretty sure it has Strubbe's PL/I like code as it is an archive of the PL/I conversion. It may also have CDC source, but that is less obvious until we can see the contents. The CDC source is historically the most relevant, and I am hoping it exists on the tape. - jim -- James T. Liu, Professor of Physics 3409 Randall Laboratory, 450 Church Street, Ann Arbor, MI 48109-1040 Tel: 734 763-4314 Fax: 734 763-2213 Email: jimliu at umich.edu

4 years, 3 months

XENIX for Tandy 2000

by binarydinosaurs＠gmail.com

Hi folks, Does anyone happen to have any links for XENIX on a Tandy 2000? Cheers, -- Adrian Graham Owner of Binary Dinosaurs, the UK's biggest private home computer collection? t: @binarydinosaurs f: facebook.com/binarydinosaurs w: www.binarydinosaurs.co.uk

4 years, 3 months

FTGH for pickup in So Cal v3: Power Macs, DuoDock, Compaq 486, ...

by spectre＠floodgap.com

A number of the prior systems were picked up or other arrangements made, and a couple more pulled from storage to make room. As before, these are FREE TO A GOOD HOME but you have to come PICK UP from various locations in the Riverside-San Bernardino, CA region. Contact me privately if interested. These remaining machines and peripherals will go to the scrapper on August 14 if not otherwise claimed. NOT WORKING: Network General Sniffer (Compaq 486 portable). Should "just work" with a new power supply, but I don't have any time to deal with it anymore and Wireshark has made it generally obsolete for what I used to use it for. NOT WORKING: Macintosh DuoDock, with key. Doesn't feed; this is usually a capacitor problem. A bit yellowed but otherwise physically intact. I use a different dock with my 2300 so I don't really need this either. PARTIALLY WORKING: 500MHz iBook G3 laptop (snow, not colour) M6497 with tray loader optical drive and power supply. Does boot OS X, but needs a new LCD backlight (mini VGA port works and you can see the display in bright light) and battery is of course toast. Otherwise physically intact except that ex-bro-in-law put grotty stickers on it. PARTIALLY WORKING: Sawtooth Power Mac G4 450MHz. No RAM, no video card, no hard disk. Used to be my file server but had issues with one of the PCI slots. Has optical drive and ZIP with matching Apple bezels. Does power on, but obviously without RAM or a video card (AGP) will not pass POST. Add your own USB keyboard and mouse. Various other items: Apple II Super Serial card with DB-25 670-0020-? (uses 6551 ACIA) and Apple IIe 80 column 64K memory expansion 607-0103-K. Can't test them but both look intact. Kurta Penmouse. Serial and PS/2 connectors. Seems to have a power supply jack (9V) but I don't have the power supply and I don't know if it needs it. Can't test it, no drivers, physically intact. Sun model 411 SCSI CD-ROM. Requires caddy. Won't mount discs, might need a recap. UMAX Astra 2100U flatbed USB scanner with power supply. Powers on. Works with classic Mac OS but probably most systems. No driver disc. Pair of Telular SX5 GSM terminals. These were the server room's backup communication system. They work, but no GSM network to connect to anymore. Might be fun if you set one up. Real serial ports! Real GSM modem! Full kits with power supply. Visual UpTime Select T1 CSU/DSU. Has a Cisco V.35 cable connected and jacks for Ethernet, serial, DSX-1 and T1. Powers on, obviously goes right into Red Alarm since there's no network. You telco nerds will love it. Samsung 17" SyncMaster CRT. Works fine, great shape, just too big to keep around anymore. -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- Never say never again. -----------------------------------------------------

4 years, 3 months

For Sale: FANUC A860 papertape reader with DOSTEK BTR (adapter)

by billdegnan＠gmail.com

FANUC A860-0056-T020 Papertape Reader and DOSTEK 440A BTR https://www.ebay.com/itm/274883740917 Ebay listing includes my project notes. Hopefully someone here will want it. Bill

4 years, 3 months

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