test-drb May 2013

test-drb@ccmp.vtda.org

213 participants
253 discussions

by derschjo＠gmail.com

I've started looking at what it's going to take to get the memory in the Imlac running again. There are two core assemblies in this machineand they're both in pretty bad shape as they were exposed to moisture for a long enough period that they accumulated quite a bitof corrosion on the control logic. (The cores themselves seem to be OK). I went over the better of the two assembliesand cleaned the legs of every socketed IC. In the course of doing so I found maybe 10 chips with legs that were falling off. I took alook at a random sampling of chips from the worse of the two assemblies and every single one of them has legs that are corroded through. So I'm going to be replacing a lot of chipsif I want to get these running again. Most of these are 7400-series logicand aren't hard to find. However, there a set of components that I'm not too familiar withand I'm not having much luck finding replacements. Now that I have the schematic I at least know what they are(had no luck looking them up based on the labels on the chips), they're described as "Transformer, 60uH", "Transformer, 6uH" and "Transformer, Square Loop" and have part numbers of 517A0024, 517A0023, and 517A0021. The chips themselves that are in my machine are labeled as follows (for the 60uH variant): 14201 NPIPA-2581 <date code> These are in 16-pin DIP packages. I'm going to need to replace quite a few of them. Any ideas of a modern replacement? (Any idea where to source NOS or used ones?) I can provide pictures if that'll help. Thanks, Josh

11 years, 6 months

[cctalk] Re: Another original Apple I sells for an insane amount

by js＠cimmeri.com

> On 05/27/2013 01:22 PM, Liam Proven wrote: > *Why* is this unfair? I rarely side with "McGuire" on anything, but on this topic, I do. Perhaps another way to try to understand it is like this: when Hatfield bought the computer from Apple, his *intent* was likely merely to purchase the A1 and use it; his purchase was likely innocent; he likely had no idea that in the future, it would be worth 60x more. In other words, his 60x gain was a fluke... a bit of luck.. not something he *knew* about in the back of his mind when he bought the A1 from Apple. Now the next guy. Here's the key difference: he bought the A1 for $40k full well knowing he could turn around and sell it for at least $300k. His 12x gain was no fluke, no luck, but something he *did know* about when he bought the A1 from Hatfield. What McGuire is saying, is that a moral person neither ellicits gain through deception NOR that other perverse way of lying: not telling the whole truth. You can swindle a person either way, and that's what it seems buyer #2 did. - JS

11 years, 6 months

Bad Bernoulli Box media - ideas?

by mbbrutman-cctalk＠brutman.com

I just ran through all of my 5" 20MB Bernoulli Box cartridges and a lot of them would not format using the Iomega tools. The media itself looks fine, but it might be worn out or magnetically compromised. This media uses servo information that I don't think can be written by the drive. So bulk erasing to try to clear up errors is out of the question. I tried it just for grins and what was a marginal disk now never comes ready. Aside from making sure the drive and heads are clean, is there anything else to be done with these? (In the event that they are dead, I'm looking for ideas for an art project using them. ;-) ) Mike

11 years, 6 months

House prices in USA - Re: Another original Apple I sells for an insane amount

by dm561＠torfree.net

----- Original Message ----- Date: Mon, 27 May 2013 13:46:01 -0400 From: Dave McGuire <mcguire at neurotica.com> ... Autumn and I assisted in 11 (yes nine) house moves in 2010, before we left FL. ----- Reply: ----- Testing our octal skills? m

11 years, 6 months

British Computing heritage - Re: Another original Apple I sells for an insane amount

by dm561＠torfree.net

----- Original Message ----- Message: 4 Date: Mon, 27 May 2013 12:37:00 -0400 From: Toby Thain <toby at telegraphics.com.au> To: cctalk at classiccmp.org Subject: British Computing heritage - Re: Another original Apple I sells for an insane amount Message-ID: <51A38BAC.6030301 at telegraphics.com.au> Content-Type: text/plain; charset=windows-1252; format=flowed On 27/05/13 11:39 AM, geneb wrote: > On Mon, 27 May 2013, Liam Proven wrote: > >> On 27 May 2013 15:23, geneb <geneb at deltasoft.com> wrote: >>> You don't know who/what Processor Technology was? >>> >>> That's it kid, turn in your nerd card. >>> >>> :) >> >> :?D >> >> British, remember? >> > Oh right. I keep forgetting you come from a computationally > disadvantaged country. :D Indeed, only the birthplace of Alan Turing - and hence Computer Science - and in the hardware department, Colossus, and many other seminal machines. Not to mention, speaking of modern microcomputers, the BBC Micro which knocked the socks off any Apple II during the 1980s. --Toby ----- Reply: ----- Also the country where, after Turing had helped them win the war and they didn't need him any more, they persecuted him, chemically castrated him, and finally drove him to suicide... m

11 years, 6 months

RESCUE - IBM Model 83 Card Sorter Available in Chicago - must go before 5/31/13

by j＠ckrubin.us

A friend of mine is being forced to vacate his building at the end of the month. He has a nice Model 83 Card Sorter that has been well stored but unused for years. It must be removed before the end of the month. This is BIG - approximately 5 feet long, 4 feet high, 500+ pounds. If you want it and can come and get it (lift gate truck a necessity), please contact me _directly_ ASAP. It will be junked if not taken this week. Thanks, Jack

11 years, 6 months

[cctalk] Re: Another original Apple I sells for an insane amount

by lproven＠gmail.com

On 27 May 2013 19:02, Cory Smelosky <b4 at gewt.net> wrote: > On Mon, 27 May 2013, Liam Proven wrote: >> On 27 May 2013 18:47, Cory Smelosky <b4 at gewt.net> wrote: >>> >>> I highly doubt he put in enough work to resell it for several hundred >>> thousand. >> >> >> [1] You're just trying to shift the point you are avoiding. What is >> "enough work"? Who defines it? What does "enough" mean? Is it >> /possible/ to do "enough work" on a single 8-bit computer to justify >> such a price? > > > If the time and effort put in to repair it somehow amounts to several > hundred thousand, then it justifies the price. Non sequitur. > Enough meant "the work put in is reasonably similar to the price you will > resell it for". Non sequitur. There is no possible amount of work that would justify the price. Therefore, it is not the amount of work. Therefore, your argument is invalid, because it manifestly was not that element of the deal. >> [2] You don't just list such an auction on eBay, you know. There is >> major work involved in professional auctions of such kit. A quick >> email to Sotheby's with "hey guys, I have this computer to sell" >> doesn't cut it. You need specialist knowledge, expertise, contacts and >> things. > > > Correct. It is absolutely absurd the price that either person sold the > computer for. ;) We are not debating what the price is. I think we are all in agreement that the price. We are debating if the price was unfair. > The lack of expertise shows in the prices. /Someone's/ lack of expertise. Not theirs. -- Liam Proven ? Profile: http://lproven.livejournal.com/profile Email: lproven at cix.co.uk ? GMail/G+/Twitter/Flickr/Facebook: lproven MSN: lproven at hotmail.com ? Skype/AIM/Yahoo/LinkedIn: liamproven Tel: +44 20-8685-0498 ? Cell: +44 7939-087884

11 years, 6 months

Looking for Arraid AEM-1 SMD drive emulator operation info/commands

by bub7734＠yahoo.com

> I'm looking for operation information on the Arraid AEM-1 SMD disk emulator. > Does anyone have infomation on the operation of this device they can send me? > I'm looking any information on the commands used to setup/configure the > device through the serial port. > > TIA, > -scott After a bit of sleuthing on archive.org, I've found the trove of documentation on Arraid products back a number of years for arraid.com. I need SMD drives on my machines because the legacy OSes I run don't support MSCP, and I need large capacity (relative to RK/RL) disk. Now that I've acquired some of these AEM-1 units to replace my ailing SMD drives on my PDP-11 systems, I'm confident I'll keep my machines and OSes running for quite some time. I've got two units running now, with only a day's worth of effort primarily due to the unclear documentation, and both are working great with Emulex SC31 UNIBUS controllers (and also with UD33s). If anyone is looking to keep an SMD disk-based system running and concerned about failing media, I highly recommend looking into these used Arraid devices.? The prices have come way down compared to new, and they've been showing up on ebay regularly. Just thought I'd share my success. -scott

11 years, 6 months

End users who pay insane amounts! Who wants to offer support for OLD systems on DOS?

by sales＠elecplus.com

I am working with a company in Canada that does manufacturing. Their software is old DOS, and the network is Novell. We have plenty of NIC cards that will work, but rather than pay $20 for mine with BNC, he is ordering his exact card from another company for $96 each! Their reasoning is that it takes more human hours to configure a different card than the price difference of the cards is worth. Also no support available any longer for these old systems and software, even though I sent him the exact drivers from the Novell page. Seems like some of you retired folks should offer your services to companies like these, get them up and going again. The kids they have in-house know NOTHING abt DOS or ISA! The purchasing agents can only go by exact PN that was in the old system, and they will pay through their teeth to keep them running. Cindy Croxton _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.3343 / Virus Database: 3184/6361 - Release Date: 05/27/13

11 years, 6 months

Pre-unicode Swedish character set?

by jonas＠otter.se

On Sun, 26 May 2013 15:58:53 -0700, Chuck Guzis <cclist at sydex.com> wrote: > "We have our own Philistines who gives up on us if we are not vigilant."? > > Probably not a very good Google-translation... We have our own Philistines who will attack us if we are not vigilant. /Jonas

11 years, 6 months

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test-drb May 2013