test-drb October 2020

test-drb@ccmp.vtda.org

136 participants
117 discussions

by cctalk＠ibm51xx.net

Hello,Is anyone else having trouble accessing their FTP/Web space on ClassicCmp? I can still access HTML and files i have uploaded but not FTP in for new files. Thanks.-Ali

4 years, 2 months

Control Data 449 Special Miniature Computer from 1967?

by steven＠malikoff.com

I was idly browsing early editions of Computer World journal on Google newspapers and found an announcement and picture of the '449', an experimental aerospace computer built by Control Data in 1967 and touted as "the world's smallest computer" at 4" x 4" x 9", of which the logic part is a 4" cube and the rest is the battery. It's on page 3 of Computer World Sep 20 1967: https://news.google.com/newspapers?nid=v_xunPV0uK0C&dat=19670920&printsec=f… It seems to me it may have been an analogous machine to the Apollo AGS perhaps and would like to know a bit more about it, but I've only been able to find a brief mention of the '449-2 Special Miniature Computer' and that's it. Archive.org hasn't turned up anything. I'm just curious about the tech used, no doubt it used DIPs or flatpack micrologic and a tiny core plane? Steve.

4 years, 2 months

Vintage Transputer Collection in Tucson

by pschow＠gmail.com

US $16K, located in Tucson, AZ, USA. https://www.ebay.com/itm/Extraordinary-Transputer-collection-Museum-quality… >From listing: ---------------------------------- Unmatched collection of vintage Transputer based systems includes 2 (TWO) Parsytec X-plorer 16-node "desktop supercomputer" systems Tested working, both units can be linked together (cable included) for a 32 node system, tested with Helios 2 x PC (ISA) interface card (IBM meganode) includes on-board transputer 1 x BBK-PCI interface card with dual Parsytec style connectors + super rare cable Parsytec P-CUBE system with 8 nodes So rare that no (other :-) ) images of this unit can even be found on the internet 2 (TWO) Parsys Supernode SN1000 units (original cost ~$500000) Includes a total of 128 transputer nodes, and a scsi disk based operating system Tested working with an included Sun workstation with VME Transputer interface board With original invoices, user manuals, installation DAT tape ++++ 14 (Fourteen) Parsytec dual cpu (power PPC + Transputer) Eurocard boards 6 (Six) CSA Quad transputer boards (PART.1) + 7-slot EISA board and ATX power adaptor (these boards only need the power pins on the ISA connectors to function) Set of "red box" Inmos toolkits/compilers Misc Transputer conference proceedings Spare 4 slot Eurocard backplane and power supply with Transputer link connectors installed Copies of all the major Transputer operating systems (Helios, Idris, TDS, Parix, Taos, Virtuoso, Strand, Paros etc) This is a very large lot so shipping will be expensive, pay no attention to the ebay estimate contact us for a realistic quote Will consider delivering "at cost" (van hire + fuel + 2 overnight motel stops) to the Southwest states (CA, AZ, NM, UT, CO) if pre-paid by cashiers cheque.

4 years, 2 months

Saving old paper labels on keyboards

by sales＠elecplus.com

Perhaps something like silly putty would work? Although as a precautionary tale, the silly putty from the 60s also removed part of the original ink. I do not know what the current formula would do. As kids, we used to have fun getting reverse images of the colorful comics in the Sunday paper :-) -- Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-370-3239 direct

4 years, 2 months

Next project: 11/24. Does it need memory?

by jnc＠mercury.lcs.mit.edu

> From: Chris Zach > Unibus can get annoyed at a lot of things .. Q-Bus is much simpler Not sure I'd concur with that latter. In analog terms the UNIBUS and QBUS are almost identical (which is why the same driver chips such as 8641's are used with both), and at the digital level they essentially identical (asynchronous interlocked request/response for read and write; interrupts using daisy-chained grant lines, with transmitted vectors; DMA, using the basic read/write protocol to transfer data). The (not very) big differences are that the QBUS multiplexes address and data onto a single set of lines, and the more complex multi-level interrupt using a shared single grant line; in both, more complex than the UNIBUS. Perhaps you meant 'easier to use', and that may be so, since most QBUS systems are much smaller (physically). > If I could disable them I could do a normal DL11 and see what I see Looking at the docs, I don't see any way to disable the on-board serial lines. You could probably cut etches to disable them, but I would advise against that, because there are easier/better ways to go. It should be quite easy to investigatwe where the problem is: look at the 'read receive 1 CSR' line, on pin 15 of E106 (with the 'halt' switch on). If that's not hopping around, the CPU isn't running. So then we'd need to look at the basic clock, and see if that's running; if so, then the CPU chip may be failed; we'd need to look at the PAX lines to confirm that. If that CSR line is active, there's a fault somewhere in the console serial line hardware; first step would be to feed characters into the machine, and see if they're coming out the UART. If you don't want to mess with all that, there are CPU boards on eBait for not too much money. (I'd be interested in buying the non-working CPU board, if you go that way.) Noel

4 years, 2 months

Well Heeled "Rescue"

by wrcooke＠wrcooke.net

Since I'm a bit short of change I thought I'd pass this along. https://www.ebay.com/itm/APPLE-1-Original-1976-Computer-System-1st-Steve-Wo… Will "A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing left to take away." -- Antoine de Saint-Exupery "The names of global variables should start with// " --?https://isocpp.org

4 years, 2 months

RL02 Disk and maybe pdp11 something at auction.

by Wayne.Sudol＠hotmail.com

I spotted this for an auction from the FORMER OYSTER CREEK NUCLEAR GENERATING STATION. Looks like a pair of RL02 with a pdp something in the middle. I can't make out what model it is from the photo. Anyone know? I'm not bidding as it's too far away from me in Los Angeles but someone else might like it. Small stuff usually sells real cheap on this site as the sellers are usually just trying to get rid of it. Also, there's no current bid. I just would not want it to go to a scrapper. https://www.bidspotter.com/en-us/auction-catalogues/bscunited/catalogue-id-… Wayne

4 years, 2 months

Next project: 11/24. Does it need memory?

by jnc＠mercury.lcs.mit.edu

> From: Chris Zach > still nothing coming out of the serial port. Figured I would document > the settings and see if anyone with an 11/24 can cross-check my settings. Time to stop trying random things and drop the (metaphorical) Big Hammer. Look at the bus, and see if it's trying to talk to the console (i.e. ODT is running). Alas, I looked at the -11/24 Tech Manual - latest rev here: http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/dload/EK-11024-TM-003.pdf and it sez (pg. 4-25): "Internal addresses; i.e. serial line unit registers .. There is no external bus cycle performed for an internal address." So you can't look on the UNIBUS. At least we have a set of prints for it: http://bitsavers.org/pdf/dec/pdp11/1124/MP01018_1124schem_Aug80.pdf CPU prints start on pg. 145; the TM will tell you what signals to look for. Noel

4 years, 2 months

RL02 Disk and maybe pdp11 something at auction.

by jnc＠mercury.lcs.mit.edu

> From: Guy Sotomayor ggs at shiresoft.com > It looks like it's 11/84 from the badge on the front. In a 10-1/2" box. Seen them in the docs (forget the model number), never seen a real one. Noel

4 years, 2 months

[HP-Agilent-Keysight-equipment] FS: S-100 stuff, electronic stuff, model railroad stuff, books and magazines!

by mechanic_2＠charter.net

Hello all, The S-100 stuff is sold and paid for. GOD Bless and Thanks, rich! On 10/18/2020 9:46 PM, Richard R. Pope wrote: > Hello all, > It looks like the S-100 stuff is available again. Sorry for the > confusion! > GOD Bless and Thanks, > rich! > > On 10/18/2020 12:36 AM, Richard Pope via cctalk wrote: >> Hello all, >> The S-100 stuff is sold pending payment. I appreciate the >> interest and help! >> GOD Bless and Thanks, >> rich! >> >> On 10/17/2020 10:44 PM, Bruce wrote: >>> I believe there is an S-100 meuseum - think they specialize in Altare >>> - but they woul probably be a good home for the stuff >>> >>> Cheers! >>> >>> Bruce >>> >>> Quoting Jeff George <driftwoodturning at gmail.com>: >>> >>>> Hi there, I?m sorry to hear about your expected diagnosis, that?s a >>>> tough >>>> one. My neighbor Had cancer of the liver last year, he tried the ?Rick >>>> Simpson oil? treatment along with standard chemo and is cancer free >>>> today. >>>> Maybe look into it? >>>> >>>> On a selfish note, Im a high school physics teacher in Tn and would >>>> love to >>>> find good price on some equipment so that my students could get >>>> their feet >>>> wet with some actual good equipment. Scopes, frequency generators, >>>> vtvm?s, >>>> dmm?s, etc.. I am a ham radio operator and tinkerer, some skills at >>>> repairing equipment but not a whole lot. >>>> >>>> Please let me know if you have anything appropriate for my students >>>> at a >>>> high school budget. Happy to give you my info so that you can >>>> verify my >>>> employment. >>>> >>>> Jeff >>>> >>>> On Sat, Oct 17, 2020 at 10:14 PM Richard R. Pope >>>> <mechanic_2 at charter.net> >>>> wrote: >>>> >>>>> Hello all. >>>>> I have 22 S-100 boards for sale. There are two backplanes. >>>>> One is a >>>>> 9 slot bare board and the other is a 19 slot fully populated >>>>> board. Both >>>>> boards have active termination. There are 8080, Z80, FDC, HDC, >>>>> Serial, >>>>> 68030, a Display board, a Front Panel board. There are also 3 Mean >>>>> Well >>>>> power supplies supplying the +9VDC and the +_16VDC. There are also >>>>> voltmeters and amp meters . I want $500 plus shipping for all of >>>>> it. I >>>>> can provide a full inventory and pictures for anyone who is truly >>>>> interested. >>>>> I probably have cancer and if I do I am dying. I want all of >>>>> this >>>>> to go to a good home and not to the landfill. If anyone is >>>>> interested I >>>>> have some test equipment, electronic components, and model railroad >>>>> equipment Please only serious inquires for I tire very easily. >>>>> GOD Bless and Thanks, >>>>> rich! >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> -- >>>> Paying Attention, Not a Tutor! >>>> >>>> >>>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >> >> > > > > -=-=-=-=-=-=-=-=-=-=-=- > Groups.io Links: You receive all messages sent to this group. > View/Reply Online (#110958): > https://groups.io/g/HP-Agilent-Keysight-equipment/message/110958 > Mute This Topic: https://groups.io/mt/77650950/89555 > Group Owner: HP-Agilent-Keysight-equipment+owner at groups.io > Unsubscribe: > https://groups.io/g/HP-Agilent-Keysight-equipment/leave/3011123/1140944146/… > [mechanic_2 at charter.net] > -=-=-=-=-=-=-=-=-=-=-=- > > >

4 years, 2 months

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test-drb October 2020