test-drb June 2006

test-drb@ccmp.vtda.org

220 participants
447 discussions

by gkaufman＠the-planet.org

I have a few oddball items I'd be happy to trade away for things I could use. I can email pictures of any of these. PDP 11/04 Front Panel Vector 4607 protoboards (3 each), PDP 11 style edge connectors SWTPC Ascii Keyboard (no case) early version with diodes for encoding LCD Panel (Sharp LQ12S56) and Keyboard from Dell Latitude CP series And free for postage, PCB from an Exidy Starfire game (eproms are gone). I'm interested in S100 stuff, a Decmate I Keyboard, Nixie and Vacuum tubes etc. - Gary <gkaufman at the-planet.org>

17 years, 11 months

3 pdp8/a chassis free for pickup

by djg＠pdp8.net

>Joe r. or anybody interested in picking these up in Melbourne fl, please >contact thom at 321-537-2384. They are in reasonable condition, no 8018 >regulators installed. > I'm needing transformer, fans, and power entry module for a chassis I have that does have the regulator. If anybody is willing to ship a chassis or parts to MD for a reasonable handling I would appreciate it. I could also trade for it a G8018 in unknown condition.

17 years, 11 months

Semi-OT: IDE & SATA to USB "dongles"

by djg＠pdp8.net

>I am not home right now - going thru a pile of stuff I have stored >elsewhere - and came across some logic I am not familiar with. MC5xx from >Motorola ring a bell? > Military temperature range of the MTTL I 4xx series logic. Seems to be 5V TTL but I only have a device selector tables, not full datasheets.

17 years, 11 months

How silly can collectors be?

by pat＠computer-refuge.org

Ok, so I thought that the prices on the S/370 consoles were silly, but at least you were getting something which was obscure and hard to reproduce. How much is a small piece of aluminum with some lettering on it worth? Aparently, between $125 and $411... http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=8817899347 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=8817897605 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=8817901495 Oddly enough, the largest one went for the lowest price, as well. I wonder if IBM would come after me for putting some lettering on some aluminum plates, and selling them on ebay... of course I'd put "replica" somewhere in the fine print of the auction. :) Pat -- Purdue University Research Computing --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

17 years, 11 months

SBC6120 (a build-it-yourself PDP-8 clone) Last Buy and End of

by bob＠jfcl.com

>ARG 1/2 Size crystal Oscillators, Digit-Key sells them, as does Mouser, and neither has a minimum order. Bob

17 years, 11 months

3 pdp8/a chassis free for pickup

by trestivo＠tarinc.com

Joe r. or anybody interested in picking these up in Melbourne fl, please contact thom at 321-537-2384. They are in reasonable condition, no 8018 regulators installed.

17 years, 11 months

Memorex 651 Drive

by bsheldrick＠tridentcomputer.com

Do you have the actual Memorex 651 drive (not the floppy disks)? I'm looking to buy one. Thanks, Bob Sheldrick Trident Computer Corporation 277 Park Drive Troy MI 48083 USA Tel # 248-585-8100

17 years, 11 months

Semi-OT: IDE & SATA to USB "dongles"

by Billy.Pettit＠wdc.com

Tony Duell wrote: So (to get it on-topic for classiccmp), people with machines that only support IDE drives are going to have problems in the future finding working replacements (I doubt very much if any of us could repair any reasonably-modern IDE drive, alas). I've seen adapters to use IDE drives on SATA hosts, but not the reverse. Oh well... Looks like designing an ST506 (host) to IDE (drive) interface is not going to be a particularly useful thing. Better to work out a way to keep the old ST506s/412s/etc working. -tony ------------------------------------------------------ I'm lost in your logic here. ST506 and 412 have been obsolete for 15 years. They will become harder and harder to find and keep working. If you are trying to keep the old systems running, you will eventually have to do a dongle of some sort with newer drives. Why not now? Keeping the old drives working is going to require parts and technology that don't exist commercially any more. You can still find the high volume circuitry in the surplus stores. But it's the heads and platters that wear out and ferrite heads and oxide media are gone. Occasional bits and pieces show up less and less often. Why not put the energy into adapting the latest drive technology? That buys you an extra decade or so. IDE drives are going to be around in far greater volumes long after the last ST506 is still working. I just had a report that last year was the biggest year ever for hard drives: 376 million units, the huge majority IDE. That gives a pool of drives to use that will outlast most of us on this list. And there are already IDE to SATA dongles to stretch out another generation. And there are the side issues to keeping the old systems going. How long will we be able to find 8" and 5.25" media? Printer ribbons? Rubber parts for teletypes and typewriters? When do you toss in the towel on trying to keep the old systems going? One of my other hobbies is amateur publishing. We used Gestener mimeograph machines. The machines are easy to keep running. But I haven't been able to buy any stencils in the last 5 years. A place in India made them until around 2000. Now it's just the odd cache that shows up on eBay every 4-6 months. The ink we've tried to make ourselves with a little success. And of course, the twiltone paper is long gone. Modern paper is too slick and non-absorbent. When we get a mimeo going, it still looks like crap because of the poor ink and paper. So I wonder again, when do we give up on keeping the old machines running? If my CDC 160-A memory goes, there's no more core memories. My Jetex engines don't have fuel any more. My old typewriters have platens that turn to powder if I try to type. Some time, we have to let go and upgrade as much as it is unaesthetic or displeasing. When? Billy

17 years, 11 months

Creating new CP/M disk from scratch

by rcini＠optonline.net

All: I'm having trouble locating someone (anyone) who has a bootable 5.25" single-density diskette suitable for my VersaFloppy controller. So, I was wondering the following. What if I setup an old PC with a 5.25" drive and use 22DISK to prepare a disk and move CP/M 2.2 .COM files to it from the PeeCee. Then, I would have to figure out how to get the cold-start loader onto the disk. Does this sound like a viable scenario? Rich Rich Cini Collector of classic computers Lead engineer, Altair32 Emulator Web site: <http://highgate.comm.sfu.ca/~rcini/classiccmp/> http://highgate.comm.sfu.ca/~rcini/classiccmp/ Web site: http://www.altair32.com/ /***************************************************/

17 years, 11 months

SBC6120 (a build-it-yourself PDP-8 clone) Last Buy and End of Life

by bob＠jfcl.com

>So what is RoHs? Short answer - it will be illegal and criminal to sell products containing lead (and many other hazardous substances) in the EU after July 1. This, in particular, means the traditional lead/tin solder. Google for RoHS. You'll find plenty of matches. Bob

17 years, 11 months

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test-drb June 2006