test-drb October 2005

test-drb@ccmp.vtda.org

264 participants
655 discussions

by jwest＠classiccmp.org

Ok, I give. I'm afraid to try harder for fear of breaking it.... Just exactly how does one get the cover off an HP 262X terminal? I can't seem to find any service information. I have a few in poor condition I'm trying to consolidate into two good working ones. There may be leftover parts to offer to the list. Jay

20 years

IBM System/34 with diskettes & documentation available in Iowa (JP Hindin)

by ceby2＠csc.com

Jay, & All, Dude I am seriously jealous. An S/34 and media!? Pity I just moved to England. I'm in the same straight, anyway. I have a 5360 I've been paying storage on. I offer it to the group, but for pickup only. It's in Hartford, CT. Lemme tell you, the S/34 is a beast, but this 5360 is an out and out monster. There are two tape drives, two line printers four hard disks, extended main cabinet, as well as a magazine style 8" floppy. I'd love to elimanate the bill for that, and the flat does have 220 (though of course nowhere near the amperage required). If you can get Jay's S/34 because your a Yank without the four days to do an Iowa run, be tempted by the S/36, please. Jay, keep me posted, I'll do what little I can to facilitate. That machine MUST be preserved. Thanks, Colin Eby -- ceby2 at csc.com CSC - EMEA Northern Region - C&SI -Technology Architect ---------------------------------------------------------------------------------------- This is a PRIVATE message. If you are not the intended recipient, please delete without copying and kindly advise us by e-mail of the mistake in delivery. NOTE: Regardless of content, this e-mail shall not operate to bind CSC to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose. ----------------------------------------------------------------------------------------

20 years

Original PDP-8 spares

by prbotha＠hotmail.com

Apologies, I've been off-the-air for a couple of days. Judging by the replies I got, there does seem to be some interest in the straight-8 spares I'd like to sell. I guess the first step would be for me to catalogue everything and publish the list here. Maybe some kind soul can then suggest a sensible way to bunch the stuff together. There are several options I can think of: The whole lot in one go, sets of a variety of cards, sets of the same cards together, one card at a time (shudder) By the way, I also have two metal strips with a lot of slide switches on them, ISTR they were at the bottom of the frame, and by the looks of them they could have something to do with tweaking voltages ? I might be persuaded to get rid of the front panel as well. There is a little bit of damage to the paint at the back of the glass, but as near as I can tell the bulbs and certainly the switches are still eminently usable. I'll go make a list and get back to the list ;^) Pieter Botha ============================ _________________________________________________________________ We've overhauled MSN Search Toolbar - FREE download! http://toolbar.msn.co.za?DI=1054&XAPID=2083

20 years

UNIX on BBC micro with 16032 coprocessor

by compoobah＠valleyimplants.com

Not sure about BBC XENIX, but SCO XENIX 386 release 2.3.4 (1991) requires 1 MB RAM (20MB disk space, though)

20 years

E&L Instruments Fox 1 Z80 Trainer chip questions

by leeedavison＠yahoo.co.uk

> Schematics for the original MPF-1 board can be found here: > http://themotionstore.com/leeedavison/z80/mpf1/index.html Hmmmm, that looks familiar. 8^)= > The monitor EPROM in the MT-80Z I have is slightly different > than the monitor EPROM in the MPF-1, but I think the changes > are very minor. How about a dump of it for the site? Lee. . ___________________________________________________________ Yahoo! Messenger - NEW crystal clear PC to PC calling worldwide with voicemail http://uk.messenger.yahoo.com

20 years

Fwd: questions about Sanyo MBC 55x collectors

by jfoust＠threedee.com

>Date: Tue, 4 Oct 2005 23:57:02 -0400 >From: Stuart Pomerantz <stuartpomerantz at gmail.com> >To: jfoust at threedee.com >Subject: questions about Sanyo MBC 55x collectors > >Dear Mr. Foust, > >I came across your website and your interest in old computers. I have a Sanyo MBC-555 computer in perfect condition with both color and amber monitors, all the old documentation/packing and several years worth of SoftSector, a Sanyo MBC 55x enthusiast magazine. Is there anyone in the world interested in this hardware/material or is it time to add to the world's landfills? Hope you can be of help (and can have first dibs, if interested). > >Sincerely, > >Stuart Pomerantz

20 years

Intel 80C186/80C188 Evaluation Board? Re: Single Board Computers

by dwight.elvey＠amd.com

Hi These usually are not very complicated. I have one of these from AMD. You might hunt around by using the search engine on the Intel site. I found quite a bit of information for mine by doing that with the AMD site. Mine has some flash and RAM with a few I/O's. I've put a simple Forth on mine that was adapted >from fpc ( A Forth for the PC ). The only tricky thing about these is the resetting of the special registers. These you can understand by looking at the data books for the C186/C188 version you have. These registers are slightly differnt for each letter version so make sure you are looking at the same one. The AMD had a special monitor on board to upgrade the flash. I'd suspect that the Intel board might be the same. If you should fiddle with the flash, make sure and save a copy. I found some information on an upgrade for the monitor but it required having the previous monitor loaded. Mine was an even earlier version. I did some fiddle faddle by loading the monitor at another location, as an application program and then using that to upgrade to the current version. It was tricky but it did work :) It now still has the monitor and the Forth as one of the applications. Dwight >From: "jim stephens" <jwstephens at msm.umr.edu> > >Joe R. wrote: > >>Speaking of SBCs. Does anyone know anything about an Intel 80C186/80C188 >>Evaluation Board? It's NOT Multibus. >> >> Joe >> >> >>At 02:25 PM 10/10/05 -0500, you wrote: >> >> >>>A while back >>> >intel still produces sample boards for all processors to send out. If >you get one of >the older eval boards, it probably has some support for expansion, but >more importantly, >it would have connections (or should have) to bring out run control and >processor bus to >be hooked to trace devices. This can require an interposer for a lot of >systems, and >is nice if you want to play with a processor and see what it does w/o >having to do such >a thing. > >A lot of these used to be on the intel site, but are no longer there. >jim >

20 years

Dying PCjr drive; options?

by Watzman＠neo.rr.com

Re: "Yes, doing the 'radial alignment' is not that hard. I've never had any success with the 'digital alignment disks', I prefer a 'catseye disk' and an oscilloscope conencted to the differential outputs of the read amplifier." The digital alignment disks are intended for checking alignment to see if it needs to be done. It's not practical to use them for actually doing the alignment. It's not impossible, absolutely, but it's not a good way to go about it, nor was it really the intent of the digital disks.

20 years

Archival storage

by James＠jdfogg.com

> Back in the late '60s I remember seeing a unit from IBM that > used film storage. The film was a small rectangle, maybe 1" x > 2-1/2". These were stored in magazines of some sort, IIRC. > They could be individually selected randomly. > > I have one of the film rectangles somewhere. When I run > across it again I will post a link to an image. In the mean > time, does this ring a bell with anyone? Aperture cards. An IBM punch card with a square of film in it. The punch coding was a filing system serial number. There were variations that looked like 35mm slides with a bigger than normal cardboard mount too. I used to work for the Terminal Data Corp, and along with Kodak we made 90% of the microfiche/microfilm cameras in the American market. Many other manufacturers, esp. COM systems (Computer Output to Microfilm) used our cameras.

20 years

Resources for archiving

by news＠computercollector.com

...Thought this might be of interest to some people: http://www.archivists.org/prof-education/seasonal_schedule.asp ----------------------------------------- Evan Koblentz's personal homepage: http://www.snarc.net Computer Collector Newsletter: http://news.computercollector.com Mid-Atlantic Retro Computing Hobbyists & Museum: http://groups.yahoo.com/group/midatlanticretro/

20 years

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test-drb October 2005