test-drb March 2004

test-drb@ccmp.vtda.org

273 participants
673 discussions

Need Alpha Microsystems Videotrax hardware

by vcf＠siconic.com

I'm in need of an Alpha Microsystems Videotrax tape backup unit (made backups to VHS tape). I can use any hardware including controllers, etc. but the Videotrax unit itself (a modified VCR) would be ideal. Cash or trade. Need soon. Please contact me directly. Thanks! -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

20 years, 8 months

running 3 phase motors from single phase...

by dwight.elvey＠amd.com

>From: "Jules Richardson" <julesrichardsonuk(a)yahoo.co.uk> > > >Rats, I just found out the museum's dead Sperry drum store uses a 3 >phase motor - is there any way I can run this from a single phase supply >(UK mains, ~240V, 50Hz) without things blowing up? Or am I resigned to >replacing the motor with a single phase equivalent? > >I just want to get the thing spinning so that people can hear it running >- it's way beyond actually being able to restore it to working condition >again :-( > >cheers > >Jules > Hi A common shop trick is to get another 3 phase motor and start that one spinning with a rope. Then connect the single phase wires as one of the phases and cross connect the other phases. This uses the free spinning motor as a generator for the motor with the load. The motor would need to be an induction type. Of course, one could have another motor to spin up the generator and a simple control to switch over the power once it is spun up. Dwight

20 years, 8 months

> Looking for data on the MAN2815 display and Nat'l Semi DS8867

by glickman＠decny.com

I got one also, and the LED displays are interesting. Did you ever get a response to your inquiry last year? I found this old Monsanto document that doesn't give much info and would appreciate if you had anything else. > Looking for data on the MAN2815 display and Nat'l Semi DS8867 > Ethan Dicks cctalk(a)classiccmp.org > Wed Mar 5 09:32:00 2003 > > ? Previous message: Help Locating H8 Parts > ? Next message: fair price for apple articles > ? Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] > Over in the Yahoo Group for the Cosmac Elf, a few of us have picked up > these MSI/88 barcode "terminals" for a couple of bucks surplus. Mine > arrived yesterday. They are interesting because they are hand-held > 1802 devices with a serial port and either an LED or LCD text display > (all of mine are the LED model). I'm trying to assist in the reverse > engineering and can *not* find any data on the LED display itself, a > MAN2815, nor one of the chips that seems to be driving it, a National > DS8867. > > I have googled for an hour looking for them. No results. > > Anybody heard of these parts? > > -ethan >

20 years, 8 months

running 3 phase motors from single phase...

by trash3＠splab.cas.neu.edu

there are more than a couple of ways to do the conversion. 1) use a solid state 3 phase "inverter". Not my best choice, as they are usually expensive and a little fragile. 2) get a 3 phase alternator, connect to single phase motor, making an MG set (motor-generator). straight forward, but 3 phase alternators are a little expensive also. 3) Use a 3 phase motor with a special starting circuit to create the third phase. This is what I normally use. the third phase is a little weak, but it works well. What happens is that you take a 3 phase motor bigger than what you want to power (for instance, if you have a 1 hp disk drive, then a 2+ hp motor is required for the "convertor"), and use a starting capacitor and relay to feed the third leg until the motor comes up to speed. ( the "mains" go across two of the three input leads, and the capacitor/relay third wire goes to the last input lead). Then, once the motor is spinning, you can connect your "load" up to the three leads of the "convertor" and you get a reasonable 3 phase supply. joe heck

20 years, 8 months

removal from mailing list

by hirschopd＠msn.com

lou, use the following http://www.classiccmp.org/cctalk.html >From: lou medina <lou_medina_57(a)yahoo.com> >Reply-To: "General Discussion: On-Topic and Off-Topic >Posts"<cctalk(a)classiccmp.org> >To: cctalk(a)classiccmp.org >Subject: removal from mailing list >Date: Mon, 29 Mar 2004 10:45:13 -0800 (PST) > >I lost the information on how I can be removed from the mailing list. Can >you send it to me please? >Lou > > _________________________________________________________________ FREE pop-up blocking with the new MSN Toolbar – get it now! http://toolbar.msn.com/go/onm00200415ave/direct/01/

20 years, 8 months

Apollo

by dan_williams＠ntlworld.com

meltie wrote: >On Tuesday 30 March 2004 13:11, Dan Williams wrote: > > >>quite a bit of dechub gear repeaters, fddi, decservers etc. >> >> >What dechub gear *have* you got? > >alex/melt > > > > a couple of people have asked me this. here goes: decswitch 900ef dec bridge 900mx x2 dec repeater 900tm vnswitch 900ef decserver 900gm dec switch 900ef decserver 90l+ decrepeater 900gm x 2 decrepeater 900tm x2 dec concentrator 900mx portswitch 900pt12 some more dead psu's one working hub and one non working Dan

20 years, 8 months

Computer Replica's

by aek＠spies.com

> www.citem.org/Vmachines is the CCC back on line?

20 years, 8 months

Problem with ESDI drive

by fire＠dls.net

Dear Classic Computing Community, I goofed when I was transferring data from a Compaq Deskpro 286 to my modern machine via 1.2MB 5.25" floppy. Machine was difficult to boot due to problems with config.sys and autoexec.bat. This time instead of booting from DOS 4.0.1 floppy, I boot from startup program floppy which helpfully offered to fix problems accessing hard drive. I was tired enough that I did not realize that this meant it was offering to repartition and format hard drive. OK. Data is all still there because I have not done anything else to it. I tried to run some of my utilities on the Compaq, but they did not like the fact that the machine has only 8MB of memory. I would like to take card and drive and install them in a more modern 75MHz Pentium system which has an ISA slot. When I put card and drive in Pentium it will not boot. It counts memory and freezes. I have tried a number of ways to configure the dip switches and play with the setup program on this machine. Machine is a Packard Bell 401CD Here are the specs: Core CNT-HCR controller, I have the manual. Here is a web page with most of the information : http://www.embeddedlogic.com/TH99/c/C-D/20256.htm Core HC150HD, here are specs I found for this drive: http://members.tripod.com/~oldboard/assembly/hard_disks_drives.html http://www.powernet.co.za/info/tables/disk/hdd/Other.Htm I also have Core Tape drive which has backups of all files if I could get drive to work - I do not have software/drivers for any of this hardware, but somehow I have the manuals, so I know the names of all the commands. I found some settings in the Setup in the Packard Bell for shared memory for the ISA card, and address and interrupt settings. I set them appropriately. I suspect that it might be something like the ROM on the card interfering with the ROM on the machine. This drive did something like overwriting BIOS in memory while machine is booting. Or maybe I completely misunderstand what is happening. Anyhow I would like to at least figure out how to get card in newer machine even if I cannot figure out how to get data off. I might eventually end up sending it to DriveSavers. Very good people, and I don't mind paying them, but I would like to see if I can get the partition table right and unformat to run. That should be all this drive needs. Bradley Slavik

20 years, 8 months

IBM and SIEMENS - Gear. Please Help to identify...

by Wolfgang.Eichberger＠bps.at

Dear Classic Computing Community, I'm on this list for quite a while an enjoy reading very much. As long I have room for I'm collecting a bit myself. Some time ago I came in touch with our local museum. They collected some stuff an put it in their storage years ago. They eventually put the machines on display in future. The storage had moved to another building and most of the information about the systems in storage has been lost. In the last weeks i tried to identify most of the bigger stuff, but now I'm stuck. It seems that there are a couple IBM-Systems, but I'm not familiar with IBM. As long I found out: There is an 1131 CPU and a 1403 Printer - I think this machine (CPU and Printer) is rather complete. I contacted the guys at ibm1130.org last week, they are very nice and helpful! Does anybody know what power connection would be needed to fire this one up? With _lots_ of cleaning and some repair work it should be in working order... Then we have a Pile of various IBM-Stuff, which I cannot determine which belongs together. I hope you can help out a bit - I'll list the stuff below: 2319-Disk Storage 2821-Control Unit 3047-Power Unit - I couln't find anything on this box... 3145-Processing Unit - This should be a Sys/370 Model 145, as far I found out... 3215-Console - Maybe for the 3145? 3330-Disk, 3 Cabinets. 3741-Data Station. Like the one seen on http://fwtunesco.org/musi/wolz/ but with only one drive. 3830-Storage Control - Disk? I have no details on this. Suggestions? 5415-Processing Unit - System 3 Model 15 is all I know... 5445-??? It should be some sort of Mass Storage Controller... One Dual Drive for - I think - Disk Stacks/Packs, It is a top loading device, like 2 washing machines side by side... - I couldn't read the number as it's near the wall and I could not move it. There is another Diskdrive too, wich seems to be like the 3330, but some different... All I could do is to list the devices. As I have 2 CPU's I think there are 2 Systems. Any suggestions? There is some Siemens Stuff too... One System 300/320 Processor Cabinet with 2 additional Racks. A System 300-R10 Processor Rack. The machines look like 16-Bit, with nice blinkenlights and flipswitches. A papertape-reader/punch and a dual 9(?)-track drive (on this drive there are still 2 tapes loaded - One is labeled System) are the only peripherals i have. I really want to get the tape off the drive to a) read it or b) store it in adequate environment. Is there some information present about siemens stuff? I googled for a while, but there was nothing really statisfying info out there... In Addition to all above we have a "Data 100 Batch Terminal" wich seems to be a card reader/punch. Does somebody know them? Some Documentation should be here, but as with all the docs I couldn't dig through all the binders and boxes ... Please excuse my horrible english, but I hope you could imagine what has been meant :) My best Regards, Wolfgang Eichberger PS.: For my private Interests I am looking for a PDP 11/23 maybe with one or two RL02 drives, if somebody knows some sources. It could be a different processor or a nice microvax as well :) ======================================================================= Wolfgang Eichberger?????????????????? phone: +43-732-7720-12655 ????????????????????????????????????? cell.: +43-664-240-65-92 Qualit?tsmanager, EDV - Koordinator?? fax? : +43-732-7720-12918 ????????????????????????????????????? email: wolfgang.eichberger(a)bps.at ----------------------------------------------------------------------- O?. Boden- und Baustoffpr?fstelle GmbH K?rntnerstra?e 12, 4020 Linz - AUSTRIA ======================================================================= ?

20 years, 8 months

electronics workbench

by pete＠dunnington.u-net.com

On Mar 29, 20:43, ben franchuk wrote: > Pete Turnbull wrote: > < stuff for bench > > > Lets not forget a fire extinguisher! In fact there is one, a CO2 extiguisher about 2 feet from the bench. -- Peter Turnbull <postmaster(a)dunnington.u-net.com>

20 years, 8 months

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test-drb March 2004