- test-drb@ccmp.vtda.org - classiccmp.org

by dgriffi＠cs.csubak.edu

Given that old Soviet knockoffs of pdp11 cpus can be found on ebay, I was wondering if anyone else has thought of making S100 boards containing said processors. -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

15 years, 1 month

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Stan Viet passed away

by evan＠snarc.net

http://www.legacy.com/obituaries/floridatoday/obituary.aspx?n=stanley-veit&… Very sad.

15 years, 1 month

6
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pdp11 CPU on S100 board

by mtapley＠swri.edu

At 12:00 -0500 5/13/11, Andrew wrote: >The only remaining practical options IMO are to either write/port a >free/open source operating system to PDP-11 (an enormous task) fig-FORTH? I'm pretty sure there was at least one (buggy?) version for PDP-11; I think maybe it ran on top of RSX-11M because I remember trying to type it in on UTCSR's RSX-11M system. I would expect drivers might be relatively easy to write in FORTH, but I don't know what other OS services might pose a challenge. -- - Mark 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

15 years, 1 month

6
11
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latin stuff

by aliensrcooluk＠yahoo.co.uk

My latin isn't that good. I only know a handful of short well-known phrases/sayings: Canem canem edit Carp? deum Carp? noctum et cetera mea culpa Lame I know. Does anyone know of any good books for learning latin? Regards, Andrew B aliensrcooluk at yahoo.co.uk ----- Original Message ----- From: "David Griffith" <dgriffi at cs.csubak.edu> To: <cctalk at classiccmp.org> Sent: Tuesday, May 10, 2011 6:51 AM Subject: latin stuff > > Si des purgamentum purgamentum accipietis > > Noli turbare cuium simia virgas tonitrui > > Si duo sunt in una camera turpis vento facit, qui sciunt et feci > > > -- > David Griffith > dgriffi at cs.csubak.edu > > A: Because it fouls the order in which people normally read text. > Q: Why is top-posting such a bad thing? > A: Top-posting. > Q: What is the most annoying thing in e-mail?

15 years, 1 month

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[rescue] ACM Publications, circa 1970, in Atlanta GA

by legalize＠xmission.com

If there's anyone in Atlanta that can rescue the SIGGRAPH, SIGCHI and Journal of Computing History portions of it, I'll cover shipping costs to me and give them some money for their time. In article <BANLkTimSRdNWh-xyFojJ9JEADOfpCXd2uQ at mail.gmail.com>, Sparr <sparr0 at gmail.com> writes: > I apologize for the poor timing of this. Had I known there was > interest, and that they were being discarded, earlier I would have > made better arrangements. > > They are at 675 Metropolitan Pkwy, Atlanta GA 30310. The gate code to > enter the complex is 9171* and they are stacked near the dumpsters at > the middle of the complex. > > They include publications from every SIG, including SIGGRAPH and > SIGPLAN and SIGCHI and ... > > The stack has suffered a few minutes of rain damage. I would say that > 10% of them got wet, although they are in a relatively dense stack on > a pallet so the ones on the bottom and in the middle are still fine. > > On Mon, May 16, 2011 at 9:45 AM, Sparr <sparr0 at gmail.com> wrote: > > A local geek organization is discarding a few thousand ACM > > publications from around 1968-1982. It includes complete years of > > Transactions, Journals, conference programs, various periodicals, etc. > > It's about one pallet load of boxes, so it would be expensive and > > complicated to ship. If anyone is willing and able to rescue them > > before they get recycled, let me know. > _______________________________________________ > rescue list - http://www.sunhelp.org/mailman/listinfo/rescue > -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

15 years, 1 month

1
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Looking for regional collectors

by tosteve＠yahoo.com

Hi, I run the website http://oldcomputers.net Almost every day I get offers from people wanting to get rid of their old computers, sometimes for free. Most of the time, though, the systems aren't worth the money to ship across the country to me in California. Therefore I am looking for other collectors across the country (or world) who wouldn't mind being recipients of mid or low value computers. Send me you name, location, email, and what you collect and I'll see if I can send some stuff your way. Do not REPLY, instead send to tosteve at yahoo.com Thank- Steven Stengel http://oldcomputers.net

15 years, 1 month

1
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Looking for regional collectors

by tosteve＠yahoo.com

Hi, I run the website http://oldcomputers.net Almost every day I get offers from people wanting to get rid of their old computers, sometimes for free. Most of the time, though, the systems aren't worth the money to ship across the country to me in California. Therefore I am looking for other collectors across the country (or world) who wouldn't mind being recipients of mid or low value computers. Send me you name, location, email, and what you collect and I'll see if I can send some stuff your way. Do not REPLY, instead send to tosteve at yahoo.com Thank- Steven Stengel http://oldcomputers.net

15 years, 1 month

1
0
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PR1ME Computer SE50M

by michael.99.thompson＠gmail.com

The Rhode Island Computer Museum has a PR1ME Computer that says it is a model SE50M on the back of the CPU cabinet. I can't find any reference to that model number. Any idea how to identify this system? https://sites.google.com/site/ricmwarehouse/Home/equipment/prime-computer-s… -- Michael Thompson

15 years, 1 month

4
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Variac and reforming caps...

by michael.99.thompson＠gmail.com

>From: Michael Kerpan <madcrow.maxwell at gmail.com> > One thing that puzzles me is that all these things seem to imply > powering the system's own power supply with a Variac rather than > bypassing it. Wouldn't it be possible to have connect a linear > transformer with the proper output voltages to a backplane and then > power that with the Variac to reform the caps only switching back to > the stock supply once the caps have been reformed? > > Mike The Variac transformer works because the voltage is AC. The crew at the CHM used a programmable DC power supply to reform the capacitors, after they disconnected them from the system.. -- Michael Thompson

15 years, 1 month

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Variac and reforming caps...

by michael.99.thompson＠gmail.com

> From:?Geoffrey Reed <geoffr at zipcon.net> > For general use on old personal computer systems, S100, Kaypro, etc.... > Would a 5A variac be sufficient? > > And is there any write ups anywhere on how to use the variac when powering > up a system that hasn?t been powered up in > 10 years? There is lots of information available on reforming capactors. Some of it is useful. This is good introduction: http://www.nmr.mgh.harvard.edu/~reese/electrolytics/ A Variac can be used to reform caps in a linear power supply. Linear power supplies were common in older computers. The RICM recently used a Variac to reform capacitors during the resurection of a PDP-8/S. The power supplies in the 8/S were linear ferroresonant design, common in DEC equipment. With these power supplies the voltage on the capacitors will slowly increase in relation to the Variac output until you reach about 45 VAC. At that point the ferroresonant circuit kicks in and the output goes to full voltage. The big electrolytic filter caps survived this, but eventually the AC capacitors in the ferroresonant circuit failed. Replacements for those are easy to find. Newer systems, like the Kaypro, probably have a switching power supply. Switching power supplies usually will not have any outout until the Variac reaches the minimum acceptable input voltage for the power supply, usually something like 85-90 VAC. At that point the power supply turns on and tries to make the full output voltage. That can be really tough on old electrolytic capacitors. Eric Smith, as part of the PDP-1 restoration project at the CHM, developed software to control an Agilent power supply and very carefully reform capacitors. This is probably the best solution. http://www.brouhaha.com/~eric/software/wrec/ -- Michael Thompson

15 years, 1 month

2
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Cray-Cyber Down for the Count?

by mjkerpan＠kerpan.com

A while ago, cray-cyber.org, which used to provide online access to various classic CDC and Cray supercomputers went down so that the owners could move the collection to a new home, with a note that access to the supercomputers would become available again in late 2010 or early 2011. Now we're almost halfway through 2011 and things are still down AND there's no word on what's up? Does anybody know what's going on here? Is the only public access classic supercomputer cluster in the world down for good? Mike

15 years, 1 month

7
6
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latin stuff

by ken＠seefried.com

On 5/16/11 8:21 PM, Fred Cisin <cisin at xenosoft.com> wrote: > I used to have a copy of McCracken in Spanish. I have a Chinese language (Mandrin) Fortran textbook. Several, actually. Didn't help a bit. KJ

15 years, 1 month

1
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Decwriter iii's for rescue in Astoria Oregon

by innfoclassics＠gmail.com

I just uncovered a couple of Decwriter IIIs that need to go. They have been stored outside but dry (plastic, foam, plastic and tarp). I got them from the basement of an automobile dealership auction about 4 years ago. Free if picked up soon. I don't want to take them apart. I could deliver from Seattle to Eugene (I-5) for gas. Otherwise they will be scrapped. Parts could be available including the print heads. Paxton -- Paxton Hoag Astoria, OR USA

15 years, 1 month

1
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IBM 3741 available for rescue

by jfoust＠threedee.com

Thank you for finding me! Although I don't have a personal interest in that particular computer, I will forward your email to the Classic Computer Collector mailing list, and someone else may contact you directly. - John Like: http://musi.fwtunesco.org/wolz/index.html Location: http://goo.gl/cvD1E At 03:27 PM 5/16/2011, you wrote: >John: > >I?m not sure if you are interested, but I have a working IBM 3741. It has one 8? floppy and does appear to be loading tax software of some type. The monitor, keyboard, etc. all seems to work. It is in pretty clean condition with everything present. It even has an old parallel computer cable and plug. > >I hate to haul it to the dump and would love to give it to someone who will appreciate it for what it is ? the first commercial computer to move from punch cards to floppy. > >Please let me know if you are interested or if you know someone else who may be interested. > >I am located in New London, WI. > >Thanks, > >Henry >HenryM at inwia.org > >Notice of Confidentiality: This email, and any attachments, is intended only for the use of the addressee(s) and may contain privileged, private, or confidential information. Any distribution, reading, copying or use of this communication and any attachments by anyone other than the addressee is strictly prohibited and may be unlawful. If you have received this email in error, please immediately notify me by email (by replying to this message) or by phone ( 920-982-3244) and permanently destroy or delete the original and any copy or printout of this email and any attachments. >

15 years, 1 month

1
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HP 9830 status..

by hp-fix＠xs4all.nl

I'm not making a lot of progress, was using my time to fix the Citroen DS replacing thegearbox in it and overhauling the steering cylinder and fixing a lot of little items which you encounter when working on a 44 year old car. It's a little like classic computing, if you don't touch it everything keeps working, but if ....etc. Citroen used a rubber based wire insulation for the DS and Pallas models between 1965 and 1968. This kind of insulation hardens over time and corrodes the copper wires, in the Safari I have, this wiring isn't used for the main wiring harness (lucky me:-) but they used it for smaller components like the wiper engine wiring and ignition resistor wiring etc.. Real fun and lots of fuses ;-) To come back to the HP 9830 I did find some time to connect the LA to the datapath board and look at the Carry and ALU signals The carry doesn't change while the processor is running it's test cycle, the QC and AC lines seems to be consistent to the processor state. So I think I have to look at the timing of U12B and at the BCD mode X2. I'll get it running .. some day -Rik > -----Oorspronkelijk bericht----- > Van: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] > Namens Tony Duell > Verzonden: zondag 15 mei 2011 18:57 > Aan: cctalk at classiccmp.org > Onderwerp: Re: Bad ebay experiance with ebay seller : sammyslave1 > > > At last I recieved my items after they were held in customs .. > > And of cause I payed them.. > > Excellent! > > IIRC one of the devices was an HP59405 HPIB interface for the 9820/9830. > You'll ahve fun with that (I speak from experience!), all you need to do is fix the > 9830. How are you getting on with that BTW? > > -tony

15 years, 1 month

2
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What is the status of Mentec? was: Re: pdp11 CPU on S100 board?

by chd＠chdickman.com

This thread begs the perennial question: What is the status of Mentec Inc? Who owns rights to the PDP-11 and the Digital Equipment operating system for that architecture? Some on the list have acknowledged PDP-11 related contact with Mentec in the recent past. If I was a licensed user of RT-11 and I wanted to change the terms of the license, how would I do that? I have no direct knowledge of Mentec so I did some online searching, below are my results. -chuck ------------------------ Some Googling shows: Mentec Inc. 13 Hampshire Drive Hudson, NH?03051 United States Phone: 603-883-7711 Fax: 603-883-7799 www.mentec.com Phone is disconnected. Link goes back to Mentec International in Ireland which I think was the parent of Mentec Inc. ------------------------ A search of corporations in New Hampshire finds this record: Date: 5/11/2011 Filed Documents (Annual Report History, View Images, etc.) Business Name History Name Name Type MENTEC, INC. Legal MENTEC, INC. Home State Corporation - Foreign - Information Business ID: 277927 Status: Admin. Suspension Entity Creation Date: 10/9/1997 Dissolve Date: 11/30/1998 State of Business.: DE Principal Office Address: % WINIFRED S GILL 20 INDUSTRIAL PK DR NASHUA NH 03062 Principal Mailing Address: No Address Last Annual Report Filed Date: Last Annual Report Filed: 0 Registered Agent Agent Name: Gill, Winifred Office Address: 20 INDUSTRIAL PK DR NASHUA NH 03062 Mailing Address: ------------------------ The two addresses are about 3 miles apart. ------------------------ Another entity at: DAYBREAK SOFTWARE INC 20 INDUSTRIAL PK DR NASHUA NH 03062 Which seems to still exist: http://www.daybreak-sw.com/ ------------------------ The building at: 13 Hampshire Drive Hudson, NH 03051 It is half occupied and the rest is available for rent. At least part of the address is a printing company.

15 years, 1 month

3
4
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Fan Fole Paper

by jhfinedp3k＠compsys.to

I have about a dozen boxes of fan fold paper. Most are 9 1/2" by 11". The sides with the holes for the sprockets tear off leaving a clean sheet of 8 1/2" by 11". I an in Toronto. Is there any interest these days in fan fold paper. I suspect that the cost of shipping is more than the paper is worth, so local pickup only. If there is no interest, I will dispose of the paper in June. Jerome Fine

15 years, 1 month

3
3
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TRS80 PT210 printing terminal serial board

by dgriffi＠cs.csubak.edu

I recently completed a PCB layout for a serial board for the TRS-80 PT210 printing terminal. The primary intended means of connecting to a host to this is an accoustic coupling modem. If you want to use RS232 serial, you need an optional board. These boards have since become very hard to find, so I used the info I found in the service manual to make my own. See http://batchpcb.com/index.php/Products/59707 to get your own made. -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

15 years, 1 month

1
0
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Variac and reforming caps...

by geoffr＠zipcon.net

For general use on old personal computer systems, S100, Kaypro, etc.... Would a 5A variac be sufficient? And is there any write ups anywhere on how to use the variac when powering up a system that hasn?t been powered up in > 10 years?

15 years, 1 month

2
1
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Bad ebay experiance with ebay seller : sammyslave1

by hp-fix＠xs4all.nl

I have had a very bad experience with sammyslave1, I bought two items an extended mass storage rom for the HP9845 and a HP-IB interface for my HP 9830A. I always pay instantly with paypal, when I contacted the seller about my items after a week or three I didn't get an answer, I waited another week and another email no answer. After I opened a dispute he answered and promised to ship the items and some extra's for the inconvenience. And yes his wife made a shipping label for USPS, but they never took the package to the post office, eventually I upgraded to a claim and got my money back, but what a waste of time this guy is. It took me 8 weeks to get nothing, so my advice don't buy from sammyslave1 (aka Larry L.) -Rik

15 years, 1 month

8
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FFS: Tandon TM-100-4 floppy drive

by dgriffi＠cs.csubak.edu

I have a Tandon TM-100-4 floppy drive that needs some work on the drive door. Free for shipping from California. -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

15 years, 1 month

2
2
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HP LJIIp and LJIIIp printers - get them working or dump them?

by chd＠chdickman.com

I have 1 LaserJet IIp and 3 LaserJet IIIp printers. None of them are really usable because the toner cartridges are either out of toner or the images have streaks and blotches. I think all of them are functional electrically and the paper feeding is still OK. It has been 3 years since I last tried one. I could always use an extra printer, so I have to decide if I should get them working or just dump them and get something new when I really need it. Is there a source for GOOD toner cartridges? Google finds a bunch of cartridges, but how many are junk refills? I am willing to pay for good cartridges, but I can't tell good from bad. Are feeding parts available if they start to pull multiple sheets, etc? Are there reputable sources? I know these have a good reputation generally, and I used one for a long time in the '90s. -chuck

15 years, 1 month

10
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Infections (was Re: DEC, IBM, sex, drugs, rock 'n' roll)

by dm561＠torfree.net

----- Original Message ----- > > Message: 17 > Date: Fri, 13 May 2011 23:26:14 -0400 > From: "Teo Zenios" <teoz at neo.rr.com> > Subject: Re: DEC, IBM, sex, drugs, rock 'n' roll > > You would need to step outside of the house into a wooded area and wait > for an infected tick to bite you to get Lyme disease, something few tech > geeks have to worry about. Yes, this is just a joke. ----- Reply: Apparently we're fortunate up here in Canada; although there are thousands of cases in the bordering US states, according to many doctors the ticks don't cross the border: "...most Canadian doctors are woefully uneducated about Lyme Disease, erroneously believing that it does not occur in Canada." This is *not* a joke! http://www.canadatrails.ca/outdoors/lyme.html

15 years, 1 month

1
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Unibus extender cards

by RichA＠vulcan.com

Does anyone have hex-height Unibus extender cards they would be willing to part with, or loan? We have created a printer interface card (based one the last rev of the M8571 plus all relevant ECOs) for an LP20 in the front end of our Tops-10 system (a DECSYSTEM-2065). It turns out that the other cards in the LP20 are not entirely defect free, so we need to hook up a logic analyzer to see where things are going wrong. We have no Unibus extenders, so we can't do things like cool suspect delay pots. We'd really prefer not to have to try building these. :-) Rich Alderson Vintage Computing Sr. Server Engineer Vulcan, Inc. 505 5th Avenue S, Suite 900 Seattle, WA 98104 mailto:RichA at vulcan.com mailto:RichA at LivingComputerMuseum.org http://www.LivingComputerMuseum.org/

15 years, 1 month

10
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DEC, IBM, sex, drugs, rock 'n' roll

by evan＠snarc.net

VCF East this weekend has at least three of those five things. Come visit to see which ones! :) http://www.vintage.org/2011/east Kids get in free.

15 years, 1 month

9
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pdp11 CPU on S100 board

by lynchaj＠yahoo.com

pdp11 CPU on S100 board? Given that old Soviet knockoffs of pdp11 cpus can be found on ebay, I was wondering if anyone else has thought of making S100 boards containing said processors. -- David Griffith dgriffi at cs.csubak.edu <http://www.classiccmp.org/mailman/listinfo/cctalk> A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? -----reply----- Hi Dave, I've been monitoring the S-100 PDP-11 CPU board thread and have a couple of observations. I did not know the Russian clone PDP-11 CPU chips lacked datasheets. This is a major problem but maybe surmountable with prototyping. Also, I was very surprised to learn there are no free/open source operating systems for the PDP-11 which would be required to adapt for existing S-100 peripherals. Apparently not even NetBSD is available which is stunning as it runs on practically every CPU in some form AFAIK. The lack of free/open source operating systems is a major problem since it then requires all the PDP-11 peripherals to be hardware compatible. As a result, either the entire PDP-11 CPU with all peripherals fit on a single S-100 board or a suite of dedicated boards would be needed. Neither scenario is realistic IMO. The only remaining practical options IMO are to either write/port a free/open source operating system to PDP-11 (an enormous task) or design an S-100 board with FPGAs and blow in the whole PDP-11 design (CPU with peripherals). The latter option rather defeats the purpose of using an S-100 bus since you can't easily share other boards and it may be easier to just make a PDP-11 SBC. Sorry the S-100 PDP-11 CPU board project does not seem practical at this time. However if anyone has ideas on how to resolve these issues and launch a community project I would be glad to support as best I can. Thanks and have a nice day! Andrew Lynch

15 years, 1 month

3
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core memory project

by peter.turnbull＠york.ac.uk

Has anyone seen this? http://www.corememoryshield.com/ -- Pete Peter Turnbull Network Manager University of York

15 years, 1 month

4
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Available S-100 board PCBs

by lynchaj＠yahoo.com

Hi! I've been ordering new and respin S-100 PCBs for the S100computers.com and N8VEM builders. There are several boards left over and available if anyone on CCTALK would like to get some I've noticed recently that some people do not want to "join" the project and prefer to buy the PCBs on eBay. This is a bit of a surprise but if their preference it is OK with me. You can see the available boards here with links for more information. http://shop.ebay.com/lynchkl/m.html Thanks and have a nice day! Andrew Lynch

15 years, 1 month

1
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HP 36" Pen plotter In CA

by shumaker＠att.net

ISTR someone looking for a vintage HP penplotter recently... FYI: There is an HP DraftMaster II 36" pen plotter listed on CL (San Francisco Bay Area) for $325. steve

15 years, 1 month

2
1
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FF: Kennedy tape drives, and QBUS PDP 11's

by silvercreekvalley＠yahoo.com

More free stuff for collection in West Yorkshire, UK if anyone is interested. 1) I have two Kennedy tape drives, not sure of the model number, but these are the front loading 19" rack mount type. These are spooled tape drives. Look to be in good condition, but I've never powered them on, so not sure if they still work. Having two is useful (one for spares). 2) I have a couple of rack mount case style PDP 11 QBUS machines. These are complete except for the disk drives(s) and the push on front plastic surround (not sure what its called). They do have the control panel and PSU though and a compliment of QBUS cards. email me of list if interested in any of these. Thanks. Ian.

15 years, 1 month

1
0
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Weird spam

by vintagecoder＠aol.com

I just received two weird spam emails froom the list this morning. One was a bounce from cctalk to my email address, obviously a cheap attempt at forging headers that failed. The second is just weird. Did anybody get it and figure out what's going on?

15 years, 1 month

2
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FFS: NSC800 Microprocessor Family Databook (1985)

by dgriffi＠cs.csubak.edu

I have a databook from National Semiconductor for the NSC800 family of microprocessor stuff dated 1985. Free for shipping from California. -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

15 years, 1 month

1
1
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core memory project

by pete＠dunnington.plus.com

Has anyone seen this? http://www.corememoryshield.com/ -- Pete Peter Turnbull Network Manager University of York

15 years, 1 month

2
1
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The results of your email commands

by cctech-bounces＠classiccmp.org

The results of your email command are provided below. Attached is your original message. - Unprocessed: Ring anytime 1-801-461-5094 We provide a concept that will allow anyone with sufficient work experience to obtain a fully verifiable University Degree. Bachelors, Masters or even a Doctorate. Think of it, within four to six weeks, you too could be a college graduate. Many people share the same frustration, they are doing the work of the person that has the degree and the person that has the degree is getting all the money. Don't you think that it is time you were paid fair compensation for the level of work you are already doing? This is your chance to finally make the right move and receive your due benefits. If you are more than qualified with your experience, but are lacking that prestigious piece of paper known as a diploma that is often the passport to success. CALL US TODAY AND GIVE YOUR WORK EXPERIENCE THE CHANCE TO EARN YOU THE HIGHER COMPENSATION YOU DESERVE! Ring anytime 1-801-461-5094 - Done.

15 years, 1 month

1
0
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new here

by tdk.knight＠gmail.com

hi i'm 23 have a love for the history of computers and recently got a pdp8a with a nice collection of stuff http://img687.imageshack.us/img687/8493/pdpe.jpg curently scanning these http://img861.imageshack.us/img861/216/tapes3.jpg http://img41.imageshack.us/img41/4800/tapes2i.jpg http://img545.imageshack.us/img545/2889/tapes1.jpg the cpu test scaned if anyones interested https://docs.google.com/leaf?id=0Bwfh3w-st3iPOTljY2YxODQtNmE0MS00MzJiLTkwZW… dkca-aa option test #1 https://docs.google.com/leaf?id=0Bwfh3w-st3iPMGM5ZmVlNjktOTkwOC00ZGE4LTgyYz… yet to figure out how to make them into a pdf also got these software specific to the spectromitor the pdp8a came from http://img859.imageshack.us/img859/8412/tapes4.jpg has the fallowing cards M8315 ? KK8A PDP-8/A CPU board (hex wide) M8317 ? KM8AA PDP-8/A bootstrap, powerfail (hex wide) M8316 ? DKC8AA PDP-8/A I/O serial/parallel/clock (hex wide) G649 ? MM8AA 8K Core stack. H219A ? MM8AA 8K Core memory control. and then these http://img811.imageshack.us/img811/5155/card3u.jpg http://img21.imageshack.us/img21/4624/card2q.jpg http://img808.imageshack.us/img808/9238/adc120z.jpg and 2 teletype asr33's with hook up for the pdp8a i also have a heath h89 thats curently waitin for parts from a member at sebhc a h11 (ls1-11) with a nice collection of cubus cards h10 reader Geworkwaster 1 in need of parts and bunch of other GE faunic related stuff such as software some plc's controller cards for hooking into computers ect... a sick ibm p70 think it needs a floppy as i can't get it to read disks ibm model 50 bunch of industrial software a sick osborn 1

15 years, 1 month

25
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pdp11 CPU on S100 board?

by tshoppa＠wmata.com

> Can anybody explain how the Mentec boards fit into all of this. > My understanding was they were the next generation of PDP11. The early Mentec boards had real DEC J-11's and onboard memory And serial ports (not too conceptually different than 11/53's or 11/93's). This spans the M70 through M100. Toward the end Of this era a big crimp was that J-11's were becoming unavailable (even via Clever routes like removal from old HSC's). Later Mentec boards (after J-11's dried up completely) went to high density TI bitslices and then custom ASICs. This is the M11 and M1. Mentec was all Q-bus. (AFAICT). As the Q-bus peripheral market dried up in The late 90's I remember some talk amongst the Mentec guys of making a M11 or M1 with onboard MSCP-compatible controller for ATA or SCSI drives but I don't think this ever got off the ground. Others made J11 CPU boards too for Q-bus, Unibus, ISA bus, etc. And there were others who sold DEC-compatible CPU's using bitslice and other higher integration techniques (e.g. QED/Quickware). The Mentec and others' main selling points, were cheaper prices and higher Levels of integration on the CPU board (thus reducing total system price). Tim.

15 years, 1 month

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Hello Son, I think you will find this

by cctalk-owner＠classiccmp.org

WHAT A GREAT IDEA! Ring anytime 1-801-461-5094 We provide a concept that will allow anyone with sufficient work experience to obtain a fully verifiable University Degree. Bachelors, Masters or even a Doctorate. Think of it, within four to six weeks, you too could be a college graduate. Many people share the same frustration, they are doing the work of the person that has the degree and the person that has the degree is getting all the money. Don't you think that it is time you were paid fair compensation for the level of work you are already doing? This is your chance to finally make the right move and receive your due benefits. If you are more than qualified with your experience, but are lacking that prestigious piece of paper known as a diploma that is often the passport to success. CALL US TODAY AND GIVE YOUR WORK EXPERIENCE THE CHANCE TO EARN YOU THE HIGHER COMPENSATION YOU DESERVE! Ring anytime 1-801-461-5094

15 years, 1 month

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Seeking Teletype KSR-35 for Internet Heritage Site and Archive

by sellam＠vintagetech.com

The Internet Heritage Site and Archive is seeking a Teletype model KSR-35 for their restoration project. They are re-creating the ARPA lab at 3420 Boelter Hall at UCLA from where the first internet message ("lo") was sent. Please see additional information below, and visit the website for more information about this excellent project: http://internethistory.ucla.edu/ Reply-to: Brad Fidler <fidler at internethistory.ucla.edu> -- 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 ] ---------- Forwarded message ---------- Date: Wed, 11 May 2011 12:14:11 -0700 From: Brad Fidler <fidler at internethistory.ucla.edu> To: Sellam Ismail <info at vintagetech.com> Subject: Reaching out to the collector community Hi Sellam, Thank you again for all your help with this. Below is a blurb that you could post. All best, Brad --- There is a project underway to recreate the UCLA ARPANET lab as it stood when it first connected with SRI in 1969. We are interested in borrowing or purchasing a *Teletype KSR-35*, to display in the original space of the ARPANET lab at 3420 Boelter Hall. I invite you to read more about our project at http://internethistory.ucla.edu/p/mission.html . Please get in touch with me at fidler at internethistory.ucla.edu if you can help us in any way. Sincerely, Brad Fidler

15 years, 1 month

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AW: cctalk Digest, Vol 93, Issue 17 -- Unibus Extender Cards

by gerhard.kreuzer＠liftoff.at

Hi, Somebody told us, that this company didn't reponse to eMails, and so I try out. I get this answer within 24 h: Hi Gerhard, Yes, you can order DEC handles and cards through me. The handles only come in white. They are .55 each. Let me know the part numbers you are interested in, and I will give you current pricing and availability. Best Regards, Claire Eichner ________________________________ Claire Eichner, Office Manager Douglas Electronics, Inc. Tel: +1 (510) 483-8770 x20 Fax: +1 (510) 483-6453 E-mail: claire.eichner at douglas.com Problem solved? With best regards Gerhard -----Urspr?ngliche Nachricht----- Von: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] Im Auftrag von cctalk-request at classiccmp.org Gesendet: Mittwoch, 11. Mai 2011 19:00 An: cctalk at classiccmp.org Betreff: cctalk Digest, Vol 93, Issue 17 Send cctalk mailing list submissions to cctalk at classiccmp.org To subscribe or unsubscribe via the World Wide Web, visit http://www.classiccmp.org/mailman/listinfo/cctalk or, via email, send a message with subject or body 'help' to cctalk-request at classiccmp.org You can reach the person managing the list at cctalk-owner at classiccmp.org When replying, please edit your Subject line so it is more specific than "Re: Contents of cctalk digest..." Today's Topics: 1. Re: Unibus extender cards (Dave McGuire) 2. And then there were three.. (Michael Thompson) 3. Re: Unibus extender cards (Paul Popelka) 4. Re: And then there were three.. (Adrian Stoness) 5. RE: Unibus extender cards (Ian King) 6. RE: pdp11 CPU on S100 board? (Rod Smallwood) 7. Re: pdp11 CPU on S100 board? (Shoppa, Tim) 8. Re: Unibus extender cards (Dave McGuire) 9. Re: Unibus extender cards (Chris Elmquist) 10. Google Lisa List (Steven Hirsch) ---------------------------------------------------------------------- Message: 1 Date: Tue, 10 May 2011 22:47:51 -0400 From: Dave McGuire <mcguire at neurotica.com> Subject: Re: Unibus extender cards To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> Message-ID: <4DC9F8D7.5080307 at neurotica.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed On 5/10/11 9:59 PM, Chris Elmquist wrote: >> Look at: >> http://www.douglas.com/hardware/pcbs/breadboards/digital.html at >> the bottom of the page (for hex). >> They will still build them for you, at $100 a pop as long as you >> order 10 or more. > > Are they still in business? If so, perhaps they do not do it by email? > Numerous email to them from here have gone unanswered. > > I'm another guy needing Unibus extender board(s) so if a group buy or > something similar comes together, add me to the list. I'm in, but not for a couple of months. It'll probably take that long to get one together. -Dave -- Dave McGuire Port Charlotte, FL ------------------------------ Message: 2 Date: Tue, 10 May 2011 20:48:15 -0400 From: Michael Thompson <michael.99.thompson at gmail.com> Subject: And then there were three.. To: cctech at classiccmp.org Message-ID: <BANLkTimHoinw2xcuUHV-KMRcO9izB9V9Fw at mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Through a generous donation the Rhode Island Computer Museum now has three PDP-8/S systems. The first PDP-8/S is a rack mount, S/N 517, and was donated earlier this year. It is operational, but still needs some more testing to insure that everything works OK. It does run FOCAL and Fortran, so I suspect that everything is OK. The second PDP-8/S is a desktop, S/N 857. The third PDP-8/S is a rack mount, S/N 537. Both were donated today. Both of these systems will need extensive cleaning and restoration. The rack mount system came with an OMD8S memory/data-break expansion chassis, S/N 96. The OMD8/S only has a single 4 KW core plane installed. During the week I will post pictures and an inventory of the two recent dontations on the RICM Warehouse WWW page. -- Michael Thompson ------------------------------ Message: 3 Date: Tue, 10 May 2011 19:18:59 -0700 From: "Paul Popelka" <trenchdweller at att.net> Subject: Re: Unibus extender cards To: <cctech at classiccmp.org> Message-ID: <002f01cc0f81$ca28c890$6563a8c0 at geek> Content-Type: text/plain; charset="iso-8859-1" Douglas Electronics lists these as available. Look here: http://www.douglas.com/hardware/pcbs/breadboards/digital.html near the bottom of the page. But, ..... you need to buy 10. Maybe you could by a double and a quad and use them together. You only need to buy 1 of each of those. Paul ------------------------------ Message: 4 Date: Wed, 11 May 2011 00:46:33 -0500 From: Adrian Stoness <tdk.knight at gmail.com> Subject: Re: And then there were three.. To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Message-ID: <BANLkTik4XghO0zSJae_fTR7LwgGt6p3Psg at mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 nice On Tue, May 10, 2011 at 7:48 PM, Michael Thompson < michael.99.thompson at gmail.com> wrote: > Through a generous donation the Rhode Island Computer Museum now has > three PDP-8/S systems. > > The first PDP-8/S is a rack mount, S/N 517, and was donated earlier > this year. It is operational, but still needs some more testing to > insure that everything works OK. It does run FOCAL and Fortran, so I > suspect that everything is OK. > > The second PDP-8/S is a desktop, S/N 857. The third PDP-8/S is a rack > mount, S/N 537. Both were donated today. Both of these systems will > need extensive cleaning and restoration. The rack mount system came > with an OMD8S memory/data-break expansion chassis, S/N 96. The OMD8/S > only has a single 4 KW core plane installed. > > During the week I will post pictures and an inventory of the two > recent dontations on the RICM Warehouse WWW page. > > -- > Michael Thompson > ------------------------------ Message: 5 Date: Tue, 10 May 2011 23:04:15 -0700 From: Ian King <IanK at vulcan.com> Subject: RE: Unibus extender cards To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>, "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> Cc: Rich Alderson <RichA at vulcan.com> Message-ID: <FF6AB92D97A23A409701CDBF66F03FCD03E0F38DB9 at 505fuji> Content-Type: text/plain; charset="us-ascii" I didn't get response to email either, so I called them, and they were very nice folks. I think they have a weird email distribution protocol. -- Ian ________________________________________ From: cctalk-bounces at classiccmp.org [cctalk-bounces at classiccmp.org] On Behalf Of Chris Elmquist [chrise at pobox.com] Sent: Tuesday, May 10, 2011 6:59 PM To: General Discussion: On-Topic Posts Only Cc: Rich Alderson Subject: Re: Unibus extender cards On Tuesday (05/10/2011 at 02:44PM -0700), Don North wrote: > > Look at: > http://www.douglas.com/hardware/pcbs/breadboards/digital.html at > the bottom of the page (for hex). > They will still build them for you, at $100 a pop as long as you > order 10 or more. Are they still in business? If so, perhaps they do not do it by email? Numerous email to them from here have gone unanswered. I'm another guy needing Unibus extender board(s) so if a group buy or something similar comes together, add me to the list. Chris > > On 5/10/2011 11:23 AM, Zane H. Healy wrote: > >One has to wonder what a production run of cards might cost, and > >how many people would be interested in them. I don't have any. > >:-( I'd be more interested in dual and quad height. Hex height > >could be used in a PDP-8 as well, couldn't they? > > > >Zane > > > > > > > >At 10:58 AM -0700 5/10/11, Rich Alderson wrote: > >>Does anyone have hex-height Unibus extender cards they would be willing > >>to part with, or loan? > >> > >>We have created a printer interface card (based one the last rev of the > >>M8571 plus all relevant ECOs) for an LP20 in the front end of > >>our Tops-10 > >>system (a DECSYSTEM-2065). It turns out that the other cards in > >>the LP20 > >>are not entirely defect free, so we need to hook up a logic analyzer to > >>see where things are going wrong. We have no Unibus extenders, > >>so we can't > >>do things like cool suspect delay pots. > >> > >>We'd really prefer not to have to try building these. :-) > > > > > -- Chris Elmquist ------------------------------ Message: 6 Date: Wed, 11 May 2011 07:20:35 +0100 From: "Rod Smallwood" <rodsmallwood at btconnect.com> Subject: RE: pdp11 CPU on S100 board? To: "'General Discussion: On-Topic Posts Only'" <cctech at classiccmp.org> Message-ID: <36BDE41E23F84F71AF957429CEA72C93 at RODSDEVSYSTEM> Content-Type: text/plain; charset="iso-8859-1" Can anybody explain how the Mentec boards fit into all of this. My understanding was they were the next generation of PDP11. There still seems to be a mystery around what happened to the rights to PDP11 they held. I have seen a recent reference to them having been sold to an unnamed American company who would quote 'Make them available'. Can anybody solve the mystery of what actually happened? ? Rod Smallwood -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Bob Armstrong Sent: 10 May 2011 14:49 To: 'General Discussion: On-Topic and Off-Topic Posts' Cc: 'Allison' Subject: RE: pdp11 CPU on S100 board? >I have done that and it runs RT out of the box on a T11. Did you build a T-11 system? Can you post more information ? >Forget RT11FB, RSTS or RSX as they will not do well in 24KW. FWIW, RSX-11S will run on an unmapped system. Of course RSX-11S was intended for "embedded" applications and it's not very useful as a general purpose OS. And in theory you can build RSX-11S systems on an RSX=11M or M+ system, but I'm not sure all the stuff you need is part of the standard M/M+ distribution so it might be hard to come up with the necessary files. Didn't at least some DSSI drives, like the RX7x, have embedded T11s that ran RSX-11S? Bob ------------------------------ Message: 7 Date: Wed, 11 May 2011 09:23:59 -0400 From: "Shoppa, Tim" <tshoppa at wmata.com> Subject: Re: pdp11 CPU on S100 board? To: "cctalk at classiccmp.org" <cctalk at classiccmp.org> Message-ID: <B136EDE3DF5EC441B6F08E0A7AB872450D71E3BA11 at EX2K7-CMS-1.wmata.local> Content-Type: text/plain; charset="us-ascii" > Can anybody explain how the Mentec boards fit into all of this. > My understanding was they were the next generation of PDP11. The early Mentec boards had real DEC J-11's and onboard memory And serial ports (not too conceptually different than 11/53's or 11/93's). This spans the M70 through M100. Toward the end Of this era a big crimp was that J-11's were becoming unavailable (even via Clever routes like removal from old HSC's). Later Mentec boards (after J-11's dried up completely) went to high density TI bitslices and then custom ASICs. This is the M11 and M1. Mentec was all Q-bus. (AFAICT). As the Q-bus peripheral market dried up in The late 90's I remember some talk amongst the Mentec guys of making a M11 or M1 with onboard MSCP-compatible controller for ATA or SCSI drives but I don't think this ever got off the ground. Others made J11 CPU boards too for Q-bus, Unibus, ISA bus, etc. And there were others who sold DEC-compatible CPU's using bitslice and other higher integration techniques (e.g. QED/Quickware). The Mentec and others' main selling points, were cheaper prices and higher Levels of integration on the CPU board (thus reducing total system price). Tim. ------------------------------ Message: 8 Date: Wed, 11 May 2011 10:04:23 -0400 From: Dave McGuire <mcguire at neurotica.com> Subject: Re: Unibus extender cards To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> Message-ID: <4DCA9767.8070707 at neurotica.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed On 5/10/11 10:18 PM, Paul Popelka wrote: > Douglas Electronics lists these as available. Look here: > > http://www.douglas.com/hardware/pcbs/breadboards/digital.html > > near the bottom of the page. > > But, ..... you need to buy 10. > > Maybe you could by a double and a quad and use them together. You only need > to buy 1 of each of those. I see no reason why that wouldn't work. I've used two duals side-by-side as a quad. -Dave -- Dave McGuire Port Charlotte, FL ------------------------------ Message: 9 Date: Wed, 11 May 2011 09:06:49 -0500 From: Chris Elmquist <chrise at pobox.com> Subject: Re: Unibus extender cards To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> Cc: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>, Rich Alderson <RichA at vulcan.com> Message-ID: <20110511140649.GA21661 at n0jcf.net> Content-Type: text/plain; charset=us-ascii On Tuesday (05/10/2011 at 11:04PM -0700), Ian King wrote: > I didn't get response to email either, so I called them, and they were very nice folks. I think they have a weird email distribution protocol. -- Ian OK. Roger that. I was hoping to get them to offer some pictures of their various prototype boards too as I am interested in those as well but find it hard to visualize what the hole patterns and other routing really are on them. Chris > From: cctalk-bounces at classiccmp.org [cctalk-bounces at classiccmp.org] On Behalf Of Chris Elmquist [chrise at pobox.com] > Sent: Tuesday, May 10, 2011 6:59 PM > To: General Discussion: On-Topic Posts Only > Cc: Rich Alderson > Subject: Re: Unibus extender cards > > On Tuesday (05/10/2011 at 02:44PM -0700), Don North wrote: > > > > Look at: > > http://www.douglas.com/hardware/pcbs/breadboards/digital.html at > > the bottom of the page (for hex). > > They will still build them for you, at $100 a pop as long as you > > order 10 or more. > > Are they still in business? If so, perhaps they do not do it by email? > Numerous email to them from here have gone unanswered. > > I'm another guy needing Unibus extender board(s) so if a group buy or > something similar comes together, add me to the list. > > Chris > > > > > On 5/10/2011 11:23 AM, Zane H. Healy wrote: > > >One has to wonder what a production run of cards might cost, and > > >how many people would be interested in them. I don't have any. > > >:-( I'd be more interested in dual and quad height. Hex height > > >could be used in a PDP-8 as well, couldn't they? > > > > > >Zane > > > > > > > > > > > >At 10:58 AM -0700 5/10/11, Rich Alderson wrote: > > >>Does anyone have hex-height Unibus extender cards they would be willing > > >>to part with, or loan? > > >> > > >>We have created a printer interface card (based one the last rev of the > > >>M8571 plus all relevant ECOs) for an LP20 in the front end of > > >>our Tops-10 > > >>system (a DECSYSTEM-2065). It turns out that the other cards in > > >>the LP20 > > >>are not entirely defect free, so we need to hook up a logic analyzer to > > >>see where things are going wrong. We have no Unibus extenders, > > >>so we can't > > >>do things like cool suspect delay pots. > > >> > > >>We'd really prefer not to have to try building these. :-) -- Chris Elmquist ------------------------------ Message: 10 Date: Wed, 11 May 2011 11:16:05 -0400 (EDT) From: Steven Hirsch <snhirsch at gmail.com> Subject: Google Lisa List To: Classic Computers Mailing List <cctech at classiccmp.org> Message-ID: <alpine.DEB.2.00.1105111107160.6127 at duo> Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII Does anyone know who owns this list and how to get in touch with them? I joined last month, made about three totally innocuous postings and found myself banned at the next attempt to sign in. Google, in their infinite wisdom, gives you no means to find out if it's a mistake, appeal to the owner, or even get an explanation for why it's occurred! I sent a message to the posting address with no response. I had been given the name of "lowenddan at gmail.com" as list owner, but cannot get any response from that address either. Is there something I should know about becoming worthy of Lisa List membership? Perhaps a secret handshake I've overlooked? I contacted a couple of members privately, and both were utterly baffled as to what the motivation may have been. I'm still operating on the assumption that this is a software glitch or mistake. If I've been thrown off as a deliberate action, then I think it's common courtesy for the list owner to at least explain why this occurred. Steve -- End of cctalk Digest, Vol 93, Issue 17 **************************************

15 years, 1 month

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Unibus extender cards

by trenchdweller＠att.net

Douglas Electronics lists these as available. Look here: http://www.douglas.com/hardware/pcbs/breadboards/digital.html near the bottom of the page. But, ..... you need to buy 10. Maybe you could by a double and a quad and use them together. You only need to buy 1 of each of those. Paul

15 years, 1 month

2
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And then there were three..

by michael.99.thompson＠gmail.com

Through a generous donation the Rhode Island Computer Museum now has three PDP-8/S systems. The first PDP-8/S is a rack mount, S/N 517, and was donated earlier this year. It is operational, but still needs some more testing to insure that everything works OK. It does run FOCAL and Fortran, so I suspect that everything is OK. The second PDP-8/S is a desktop, S/N 857. The third PDP-8/S is a rack mount, S/N 537. Both were donated today. Both of these systems will need extensive cleaning and restoration. The rack mount system came with an OMD8S memory/data-break expansion chassis, S/N 96. The OMD8/S only has a single 4 KW core plane installed. During the week I will post pictures and an inventory of the two recent dontations on the RICM Warehouse WWW page. -- Michael Thompson

15 years, 2 months

2
1
0 0

Terak notebooks

by jfoust＠threedee.com

Among the items from the William Mayberry estate, I've scanned four notebooks into a series of TIFF files. Bill kept engineering notebooks to carefully document his thoughts in designing the Terak, as well as meeting notes with other principals. I'll make these available when I'm finished. Each page filename is 000.TIF, 001.TIF, etc. What's the best tool for converting these to a sensible PDF? LibTiff tiffcp to multipage, then tiff2pdf? I have Windows, Mac and Linux. - John

15 years, 2 months

4
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"Original" IBM PC

by jws＠jwsss.com

I'll take half what they are asking for all of my Pee Cees 250814364633 and it comes with 6" floppy drives. Phil? Disk Ferret material? Jim

15 years, 2 months

14
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Desoldering a chopper transistor

by trag＠io.com

> Date: Mon, 09 May 2011 10:57:34 -0700 > From: "Chuck Guzis" <cclist at sydex.com> > On 9 May 2011 at 12:59, Shoppa, Tim wrote: > >> ChemWick (which is indeed better than the other brands but this >> applies to the Other brands too) will "dry out" and become much less >> useful If not stored properly. > > That's "Chem-Wik" (tm) and "Soder-Wick" (tm) by Chemtronics. > >> If it does get dried out, dipping it in one of the fancy-pants fluxes >> will Pep it up considerably :-) > > I find that a brief dip of the braid in denatured alcohol helps > considerably (at least with "Soder Wik".) Thank you, Chuck and Tim. I did not know that. When I get home this evening I will put the plastic cover back on my spools of braid and perhaps store them in a ziplock bag as well. Jeff Walther

15 years, 2 months

2
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OT: ham radio licenses

by mcguire＠neurotica.com

I had a ham license (coded Tech class, KA2UZK) from 1984 to 1994, and was quite active on VHF FM and HF CW during that time. I've missed it quite a bit over the years and have always intended to relicense, but the piles of rules changes gave me pause, as rote memorization isn't really my strong suit. Well, the recent discussion of ham radio licensing motivated me to finally get off my butt and do it. I studied off-and-on for a few days to assimilate the new rules & regs, and registered for the VE test given at the hamfest in Hagerstown, MD on April 31st. I sat for all three exams...Element 2 (Technician class), Element 3 (General class) and Element 4 (Extra class). I am very proud to report that I passed them all the first time through! And, I don't mind saying, the Extra exam made my head hurt. The FCC processed my paperwork very quickly, and on May 5th I was granted an Extra-class license and assigned call sign AK4HZ. Of I'm still in West Virginia handling family business, while all of my ham gear is in Florida, but my mother (who is house-sitting for me in Florida) was able to ship two of my HTs up here so I'd have something at least. When I have access to my HF gear (Yaesu FT-ONE and FT-920, Heath HW-7, HW-8, and HW-9 QRP rigs, and Heath SB-101) I hope to try out some of the neat new(ish) stuff like PSK31 that came up while I was away. High-tech stuff aside, I'm sure to do some plain old SSB and CW on the HF bands. Anyway, enough of my blather, I'm just proud to have accomplished that and wanted to tell everyone. I'm hoping to catch some of you on the air! -Dave 73's DE AK4HZ -- Dave McGuire Port Charlotte, FL

15 years, 2 months

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HP LJIIp and LJIIIp printers

by mtapley＠swri.edu

At 12:00 -0500 5/10/11, Charles wrote: >Is there a source for GOOD toner cartridges? Google finds a bunch of >cartridges, but how many are junk refills? I am willing to pay for good >cartridges, but I can't tell good from bad. Are feeding parts available if >they start to pull multiple sheets, etc? Are there reputable sources? > >I know these have a good reputation generally, and I used one for a long >time in the '90s. I've had reasonable success (with my LaserJet4M+, a later model) with: http://www2.printerworks.com/ No connection, just satisfied customer. YMMV. -- - Mark 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

15 years, 2 months

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Subject: Re: Desoldering a chopper transistor

by kandres＠epssecurity.com

As far as the "broken track", with difficult to remove components, and the lack of an octopus with scope, an exacto knife slice of track can be used to meter suspect components without removal. A solder bridge then repairs the "service trick". As Tony suggested, watch for modifications that may have altered the track on purpose! Kevin Andres Senior Technician Engineered Protection Systems Inc Nicet # 90660 Fire Alarm Systems Level II 616 459 0281 kandres at epssecurity.com epssecurity.com -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of cctech-request at classiccmp.org Sent: Sunday, May 08, 2011 6:46 PM To: cctech at classiccmp.org Subject: cctech Digest, Vol 93, Issue 10 Send cctech mailing list submissions to cctech at classiccmp.org To subscribe or unsubscribe via the World Wide Web, visit http://www.classiccmp.org/mailman/listinfo/cctech or, via email, send a message with subject or body 'help' to cctech-request at classiccmp.org You can reach the person managing the list at cctech-owner at classiccmp.org When replying, please edit your Subject line so it is more specific than "Re: Contents of cctech digest..." Today's Topics: 1. Re: "Original" IBM PC (Tony Duell) 2. Re: Desoldering a chopper transistor (Tony Duell) 3. Re: rack mounting vintage gear (Al Kossow) 4. Re: ebay: VAXstations (Salt Lake City; I can pick up for you) (Wolfgang Eichberger) 5. RE: Desoldering a chopper transistor (dwight elvey) 6. Re: Desoldering a chopper transistor (Dave Caroline) 7. Re: Desoldering a chopper transistor (Chuck Guzis) 8. Re: Desoldering a chopper transistor (John Robertson) 9. Re: Desoldering a chopper transistor (Brent Hilpert) 10. RE: Desoldering a chopper transistor (Rob Jarratt) 11. RE: Desoldering a chopper transistor (arcarlini at iee.org) 12. IBM 3480 help (Patrick Finnegan) 13. Re: IBM 3480 help (vintagecoder at aol.com) 14. Re: IBM 3480 help (Al Kossow) 15. Re: Desoldering a chopper transistor (Geoffrey Reed) 16. Re: Desoldering a chopper transistor (Pete Turnbull) 17. Enormous lot of vintage microcomputer stuff for sale (Bloomington, IN) (Mark Meiss) 18. Re: Enormous lot of vintage microcomputer stuff for sale (Bloomington, IN) (Richard) 19. Re: Enormous lot of vintage microcomputer stuff for sale (Bloomington, IN) (Mark Meiss) 20. RE: Desoldering a chopper transistor (arcarlini at iee.org) 21. RE: Desoldering a chopper transistor (Rob Jarratt) 22. S-100 EPROM boards are here! (Andrew Lynch) 23. RE: Desoldering a chopper transistor (Chuck Guzis) 24. pdp11 CPU on S100 board? (David Griffith) 25. Re: pdp11 CPU on S100 board? (Roger Ivie) ---------------------------------------------------------------------- Message: 1 Date: Sun, 8 May 2011 18:46:59 +0100 (BST) From: ard at p850ug1.demon.co.uk (Tony Duell) Subject: Re: "Original" IBM PC To: cctalk at classiccmp.org Message-ID: <m1QJ84S-000J3yC at p850ug1> Content-Type: text/plain > > HAHAHAHAHAHAHAHAHAHAHAHAHAHAHA! > > "...or 5.25" as they are sometimes called." You mean, by everyone else on = Indeed... I did wonder if the 5.25" refered to the diameter of the magneitc disk and that the square envelope was larger. However, I have just measured a 5.25" floppy disk with a ruler and the enveleope is 5.25" in each direction... So what 6" refers to is beyond me. (OK, you can call me cluelrdd for not knowing the size of the minifloppy disk, but at least I measurted it rather than making some silly comment...) > the planet, even in metric-based countries? "This computer has been in my = > family for generations. I inherited the computer from my grandfather and my= > uncle originally purchased it...." Generations? The machine was introduc= > ed in 1981....=20 > > Whatever this guy's smoking, it's pretty serious stuff. Maybe *that's* wor= > th $65K, for viable cuttings - not that I would know anything about that so= > rt of thing, really -- Ian =20 Not that I am going to bid on it, but I wonder just how 'original' this is... To me an origianl IBM PC implies a 16K-64K motherboard. And a 63W power supply I would also claim that the expansio cards were origianl IBM ones. I wouldn't object to _ectras_ being third-party, but there should be enough IBM boards, of the types produced when the machine was made, to have a working system (that is, video card and floppy controller at least). But if, for exmaple, an MDA card has been rpelaced at some point by a Hercules card and the originial IBM MDA card is not included with the machine then that is not 'original'. -tony ------------------------------ Message: 2 Date: Sun, 8 May 2011 19:01:19 +0100 (BST) From: ard at p850ug1.demon.co.uk (Tony Duell) Subject: Re: Desoldering a chopper transistor To: cctalk at classiccmp.org Message-ID: <m1QJ8II-000J49C at p850ug1> Content-Type: text/plain > And just for the record, I have not actually lifted a track. The track Oh you will :-). I'll admit ot having lifted my fair share of tracks too. And damaged the odd bit of through-plating. > damage is strange and I am not entirely convinced it was me because it is a > little distance from the pin, perhaps 5mm away and it is a break in the > track. It looks like I could have let the iron slip across it, but I don't You won;t normally break a track by just letting the iron rub across it. Are you sure this track break is not deliberate? Have you checked the components connected to each side of it and made sure they should be connected accordign to the schematics? -tony ------------------------------ Message: 3 Date: Fri, 06 May 2011 17:13:26 -0700 From: Al Kossow <aek at bitsavers.org> Subject: Re: rack mounting vintage gear To: cctalk at classiccmp.org Message-ID: <4DC48EA6.1040902 at bitsavers.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed On 5/5/11 11:21 PM, David Griffith wrote: > My story is that I scored a couple IMSAIs and Altairs with the catch that I had to take most of the contents of the shed. I'm still selling off that stuff. > And a good lot of stuff you got there, too. It would be nice to see if Morrow MICRONIX is in there somewhere. re. Fujitsu tape drive If someone wants one in the Bay Area, I have a complete unit I'm about to scrap. ------------------------------ Message: 4 Date: Sat, 7 May 2011 13:53:23 +0200 From: Wolfgang Eichberger <oe5ewl at gmail.com> Subject: Re: ebay: VAXstations (Salt Lake City; I can pick up for you) To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Message-ID: <BANLkTi=A171jPbG25ieck_NNJpTT4pg1JQ at mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 same here for austria. regards, wolfgang ps: can pick up and store too, if someone needs this. -- Wolfgang Eichberger - OE5EWL Operating System Collector Blog: 5ewl.blogspot.com Homepage: www.eichberger.org 2011/5/6 Pontus <pontus at update.uu.se>: > 2011-05-06 18:24, Dave McGuire skrev: >> >> ?In any event, that one (he says he has two) is in the BA123 "World Box", >> which have dried up significantly on the market in the past couple of years >> and are becoming much harder to find than they had been. >> > > It is definitely on the want list :) If anyone local to me (sweden that is) > has anything in a BA123 I wouldn't mind driving a bit and pay a bit for it. > > I've seen two in Sweden, on with GPX > > Regards, > Pontus. > > ------------------------------ Message: 5 Date: Sat, 7 May 2011 06:26:01 -0700 From: dwight elvey <dkelvey at hotmail.com> Subject: RE: Desoldering a chopper transistor To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Message-ID: <SNT129-W426FD9C62B93280592E265A3820 at phx.gbl> Content-Type: text/plain; charset="iso-8859-1" > Date: Sat, 7 May 2011 10:40:55 +0100 > From: pete at dunnington.plus.com > To: > Subject: Re: Desoldering a chopper transistor > > > On 07/05/2011 10:04, Rob Jarratt wrote: > > I need to desolder a chopper transistor from a PCB in the PSU of my PDP11 so > > that I can test it and if necessary replace it. The trouble is that I am not > > experienced with soldering and desoldering and I am having a lot of trouble > > desoldering it. I have made several attempts, damaging one of the PCB tracks > > in the process (should be repairable by adding a wire). I have a cheap > > Weller 40W soldering iron and I have been using some narrow tips. I have one > > of those pumps for sucking out the molten solder. I also have 2mm solder > > wick (braid?). > > You don't normally desolder more than one pin at a time but you do need > a good iron and a good pump. On DEC PSUs particularly, I've found the > holes are, um, less than generous -- the component pins tend to be a > close fit and there's not much room around the pin even when you get all > the solder out. > > I normally use a 100W Weller soldering gun for things like those > trannies (I have a 50W Weller temperature-controlled iron for anything > else). The trick is to get the solder hot enough to flow, and to do so > quickly. If you can't do that, you're unlike to succeed, and the longer > you leave the heat on the pad, the more likely you are to damage > something. Then use a large pump to suck it off. Sometimes adding > fresh solder and trying a second time helps -- the first attempt removes > most of the oxidised stuff and the flux from the fresh solder helps > remove the last of it. Then push the pin from side to side to break the > last whisker of solder that bridges from the pad across the gap to the > pin -- if you can! Hi I thought I'd mention that you always need to refill with solder if it misses getting it all out. Try heating both sides with two irons( tough with only two hands but I've gotten good with holding the pump and iron at one side with just the one hand. You need something to clamp the board. Also, when first melting the solder, make sure the pin is free and centered in the hole. I push the lead around with the iron and solder melted until it feels right( it is a feel thing ). It seems that no matter how well it is cleared, some small bridge seems to be there. Often this can be easily broken loose with a little pressure >from a small screwdriver. If that doesn't work, I put the iron on the lead with sideways pressure. Just as the lead pops, I remove the iron. The idea is to heat it just enough to make the solder start to soften but not so much as to melt it all and attach the lead someplace else. If this fails, I refill the hole with solder and try to adjust the lead again, while hot, to center it in the hole. As a last resort, I go to a friend house that manufactures burn-in boards. He has a solder pot. It is full and I just set the board on the brim of solder. I then just pull the part out. Do remember through all this, do not put pressure on the traces with the iron. Use a clean iron well tinned iron. You can't clear a partially cleared hole, you need to refill it and try again. Use bottled flux if you can get some, it helps to keep the solder surfaces fresh. Also, although many like solder wick, I'd done more damage with it then I'd like. I now only use the pump( not the small one with the yellow lever on the side. It is junk.The larger the better ). Dwight > > I'd suggest getting a bigger iron if you can, and don't use a narrow tip > for large components. I wouldn't waste any time on solder braid, either > -- fine for small stuff but probably not for this. > > -- > Pete Peter Turnbull > Network Manager > University of York ------------------------------ Message: 6 Date: Sat, 7 May 2011 14:40:12 +0100 From: Dave Caroline <dave.thearchivist at gmail.com> Subject: Re: Desoldering a chopper transistor To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Message-ID: <BANLkTik391Az42pGyL5Ef1FGwC2UDpSm6w at mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 A few points 1. If the device is dead, or cheap, just cut it off above the board, the board is rare/delicate the device commodity and replaceable, then each leg can be got out above board, even the solder sucking process can do this for you. least board heating 2. after sucking all three, I try to jiggle each lead to check its free/break any small amount of solder left, hole has to be reasonable clear 3. with a large iron add solder to get a blob on all three, pull device out and then suck holes after 4. similar to above but rapid sliding of iron over the pins to get all melted, then pull device 5. back in the old days there were iron tips around for multi pin melting, I never found them to be too good braid never worked that well for me Dave Caroline ------------------------------ Message: 7 Date: Sat, 07 May 2011 08:33:01 -0700 From: "Chuck Guzis" <cclist at sydex.com> Subject: Re: Desoldering a chopper transistor To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Message-ID: <4DC503BD.29324.2A3F5E at cclist.sydex.com> Content-Type: text/plain; charset=US-ASCII On 7 May 2011 at 10:04, Rob Jarratt wrote: > The thing I really don't understand is how you desolder more than one > pin at the same time. There is always bound to be just a little solder > left holding each pin in place no matter how much you remove with the > pump or wick. So it seems to me that you would need to have the > solder in all 3 pin holes molten, all at the same time, to be able to > lift the component. > > What is the trick? Or is it just that my soldering iron is not good > (powerful) enough? If you're going to do much repair of PCBs, a temperature-controlled iron is pretty important. I use my venerable Weller TCP iron--a time- proven design that's still in production after, what, a half-century? However, there are less-expensive imported options. A clean and well-tinned iron is vital to this kind of work. If your iron isn't tinned, the molten solder can't conduct heat to the joint and you end up spending too much time trying to get a joint to melt. If you're using a solder pump, make sure it's the big one; the little ones don't seem to be worth much. It often helps to add solder to a joint before you use the pump to suck the solder out. Once you've sucked the solder out of a joint (you should be able to see daylight through the joint), wiggle the component gently to break the bond between the lead and the PCB trace formed by any remaining solder film and it should pop right out. Others have suggested cutting the component body off the leads to reduce heat conduction away from the joint being worked on--and that's a very good suggestion. If you still don't trust yourself, you may want to look into a low- temperature solution, such as Chip-Quick, which is basically a low- temperature fusible alloy that takes solder into solution. It's quite valuable duing SMT rework (I have yet to damage a PCB using it to replace surface mount ICs), but it might also work with traditional through-hole devices. http://www.chipquikinc.com/index.htm I've got lots of desoldering braid, but I tend to use it for soldering SMT packages, rather than desoldering them. --Chuck ------------------------------ Message: 8 Date: Sat, 07 May 2011 09:14:25 -0700 From: John Robertson <pinball at telus.net> Subject: Re: Desoldering a chopper transistor To: General Discussion: On-Topic Posts Only <cctech at classiccmp.org> Message-ID: <4DC56FE1.8010300 at telus.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Pete Turnbull wrote: > > On 07/05/2011 10:04, Rob Jarratt wrote: >> I need to desolder a chopper transistor from a PCB in the PSU of my >> PDP11 so >> that I can test it and if necessary replace it. The trouble is that I >> am not >> experienced with soldering and desoldering and I am having a lot of >> trouble >> desoldering it. I have made several attempts, damaging one of the PCB >> tracks >> in the process (should be repairable by adding a wire). I have a cheap >> Weller 40W soldering iron and I have been using some narrow tips. I >> have one >> of those pumps for sucking out the molten solder. I also have 2mm solder >> wick (braid?). > > You don't normally desolder more than one pin at a time but you do > need a good iron and a good pump. On DEC PSUs particularly, I've > found the holes are, um, less than generous -- the component pins tend > to be a close fit and there's not much room around the pin even when > you get all the solder out. > > I normally use a 100W Weller soldering gun for things like those > trannies (I have a 50W Weller temperature-controlled iron for anything > else). The trick is to get the solder hot enough to flow, and to do > so quickly. If you can't do that, you're unlike to succeed, and the > longer you leave the heat on the pad, the more likely you are to > damage something. Then use a large pump to suck it off. Sometimes > adding fresh solder and trying a second time helps -- the first > attempt removes most of the oxidised stuff and the flux from the fresh > solder helps remove the last of it. Then push the pin from side to > side to break the last whisker of solder that bridges from the pad > across the gap to the pin -- if you can! > > I'd suggest getting a bigger iron if you can, and don't use a narrow > tip for large components. I wouldn't waste any time on solder braid, > either -- fine for small stuff but probably not for this. > Also, once you have most of the solder removed from the feed through hole then you can push on the leg of the device with a small screwdriver (or the like) to try to release it from the side of the hole. Most device legs go in the hole on an angle, thus there is a tiny film of solder holding the leg to the side of the hole - sometimes on both the top and the bottom of the hole. You will feel or hear a tiny 'click' as the leg releases. Looks like this (somewhat crappy ASCII sketch) \ |\ | <--- Top of feed through hole | \ | | \ | | \| <--- Bottom of feed through hole \ <--- Leg of device So you are trying to break the top and bottom points by pushing the leg away from the side of the hole it is soldered to. If done correctly the device will then be easy to remove with only finger force - no prying with the screwdriver! Hope that makes sense! John :-#)# -- John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames) www.flippers.com "Old pinballers never die, they just flip out" ------------------------------ Message: 9 Date: Sat, 7 May 2011 10:01:54 -0700 From: Brent Hilpert <hilpert at cs.ubc.ca> Subject: Re: Desoldering a chopper transistor To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Message-ID: <0aa498f92dc635573a396ff7494972f1 at cs.ubc.ca> Content-Type: text/plain; charset=US-ASCII; format=flowed > I need to desolder a chopper transistor from a PCB in the PSU of my > PDP11 so > that I can test it and if necessary replace it. As you are just trying to isolate the device for testing, sometimes it is easier to open the circuits elsewhere to achieve the isolation. For example, if the collector goes to an offboard transformer through a connector, then that lead is easily isolated; the base is probably fed by a resistor and lifting one lead of the resistor will isolate the base. With 2 of the 3 connections to the transistor open, it is isolated for testing purposes. TO-220 packages (3 leads with tab) can be very difficult to remove in one piece when - as Pete was mentioning - the holes are to small. Some manufacturers fail to increase the drill size for the wider TO-220 pins, they can be very tight with no room to wiggle the lead to break the final solder bridge. Sometimes slightly twisting the lead might do it. Sometimes you have to rock the device up and out of the holes with several heating cycles. ------------------------------ Message: 10 Date: Sat, 7 May 2011 18:58:36 +0100 From: "Rob Jarratt" <robert.jarratt at ntlworld.com> Subject: RE: Desoldering a chopper transistor To: "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org> Message-ID: <039201cc0ce0$651033b0$2f309b10$(a)ntlworld.com> Content-Type: text/plain; charset="US-ASCII" > -----Original Message----- > From: cctalk-bounces at classiccmp.org [mailto:cctalk- > bounces at classiccmp.org] On Behalf Of Brent Hilpert > Sent: 07 May 2011 18:02 > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: Desoldering a chopper transistor > > > I need to desolder a chopper transistor from a PCB in the PSU of my > > PDP11 so > > that I can test it and if necessary replace it. > > As you are just trying to isolate the device for testing, sometimes it is easier to > open the circuits elsewhere to achieve the isolation. For example, if the > collector goes to an offboard transformer through a connector, then that lead > is easily isolated; the base is probably fed by a resistor and lifting one lead of > the resistor will isolate the base. With 2 of the 3 connections to the transistor > open, it is isolated for testing purposes. > > TO-220 packages (3 leads with tab) can be very difficult to remove in one > piece when - as Pete was mentioning - the holes are to small. Some > manufacturers fail to increase the drill size for the wider TO-220 pins, they > can be very tight with no room to wiggle the lead to break the final solder > bridge. Sometimes slightly twisting the lead might do it. Sometimes you have > to rock the device up and out of the holes with several heating cycles. It is indeed a TO220 and I do need to test it. After sending my request I had an idea and took the board to a local jeweller, he was able to remove it for me by using a very fine drill to drill out the just the pins themselves. The contacts look to be intact and even if they are not I will be able to use wires to reconnect the transistor pins. Thanks Rob ------------------------------ Message: 11 Date: Sat, 7 May 2011 19:44:02 +0100 From: <arcarlini at iee.org> Subject: RE: Desoldering a chopper transistor To: "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org> Message-ID: <8730C5A328D94EE69B0E446A537D6F12 at ANTONIOPC> Content-Type: text/plain; charset="us-ascii" I'd be tempted to suggest that you pick up some scrap boards from somewhere (old TV/computer from the tip) and practise. You want to non-destructively remove this component and you've already lifted a track. I'd stop now and practise on something that doesn't matter. Removing something like a 4 pin molex power connector from a dead (recent:-)) hard drive or similar is probably the sort of difficulty you want? Antonio arcarlini at iee.org ------------------------------ Message: 12 Date: Sat, 7 May 2011 16:59:36 -0400 From: Patrick Finnegan <pat at computer-refuge.org> Subject: IBM 3480 help To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Message-ID: <201105071659.37382.pat at computer-refuge.org> Content-Type: Text/Plain; charset="us-ascii" I'm attempting to figure out an error code on my IBM 3480-B22 drive, and was wondering if anyone had access to a manual listing error codes for the drives. I seem to have a "logic" manual, but that's not particularly helpful yet. The code the drive displays, immediately after start-up is "CHK 38". Pat -- Patrick Finnegan ------------------------------ Message: 13 Date: Sat, 7 May 2011 21:51:31 +0000 From: vintagecoder at aol.com Subject: Re: IBM 3480 help To: cctalk at classiccmp.org Message-ID: <201105072151.p47LpZOo009529 at imr-ma01.mx.aol.com> Content-Type: text/plain; charset=US-ASCII > I'm attempting to figure out an error code on my IBM 3480-B22 drive, and > was wondering if anyone had access to a manual listing error codes for > the drives. I seem to have a "logic" manual, but that's not particularly > helpful yet. > > The code the drive displays, immediately after start-up is "CHK 38". > > Pat That's out of my area but a quick check of the 3490 manuals I could find (couldn't find any relevant 3480 doc) does not look good. It says this is a "call your service rep" type of error- the CHK XX codes are apparently undocumented, at least for 3490s. If you can't find a 3480 guide on bitsavers (I just checked and couldn't find one) then this may or may not be worthwhile: http://www.fujitsu.com/downloads/COMP/fcpa/tapes/m2488ce_prod-guide.pdf The only reason I suggest it is Fujitsu has some history of ripping off IBM (they did it with several OS versions and paid over 800 million USD in a settlement) and compatible-hardware manufacturers often try to keep the same error codes to make pubs easier (also by ripping off IBM), so maybe just maybe they are using the same codes as the 3480/90 tape subsystem. See appendix E. for the code listings. Nice piece of hardware btw. IBM's marketing materials say "The A22 control unit is priced at $65,430, and the B22 tape unit, which contains two tape drives, sells for $43,120." Good luck and post back if you find anything. If you don't get any answers >from the list or elsewhere (some good places to ask are on IBM-MAIN (you will need to subscribe or nobody will see your posts) and the yahoo hercules groups) email me offline and I'll see if I can find anything. -- +------------------------------------------------------------------------+ | Vintage Coder America Online Com ivagntrpbqre at nby.pbz <ROT13> | | | | Collecting: DOS assemblers, compilers, books, and related doc, | | software and doc for IBM S/360 through OS/390. | | | | Wanted: Ada 95 compilers for MVS/ESA and Solaris (Sparc). | | | |---------------------------------------+--------------------------------| | Powered by Slackware 64 & Solaris 10 | Powered by Hercules | |=======================================+================================| | PGP Key 4096R 0x1CB84BEFC73ACB32 Encrypted email preferred | | PGP Fingerprint 5C1C 3AEB A7B2 E6F7 34A0 2870 1CB8 4BEF C73A CB32 | +------------------------------------------------------------------------+ ------------------------------ Message: 14 Date: Sat, 07 May 2011 15:10:13 -0700 From: Al Kossow <aek at bitsavers.org> Subject: Re: IBM 3480 help To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> Message-ID: <4DC5C345.2090008 at bitsavers.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed On 5/7/11 1:59 PM, Patrick Finnegan wrote: > I'm attempting to figure out an error code on my IBM 3480-B22 drive, and > was wondering if anyone had access to a manual listing error codes for > the drives. I seem to have a "logic" manual, but that's not > particularly helpful yet. > There are about 8 books in the maint set, I'll see about getting them on line. It was also sold as the DEC TA90/E. I have a couple of volumes up under dec/magtape/ta90 ------------------------------ Message: 15 Date: Sat, 07 May 2011 15:27:13 -0700 From: Geoffrey Reed <geoffr at zipcon.net> Subject: Re: Desoldering a chopper transistor To: cctalk <cctalk at classiccmp.org> Message-ID: <C9EB1551.42C11%geoffr at zipcon.net> Content-Type: text/plain; charset="US-ASCII" On 5/7/11 11:44 AM, "arcarlini at iee.org" <arcarlini at iee.org> wrote: > I'd be tempted to suggest that you pick up some scrap boards from > somewhere (old TV/computer from the tip) and practise. > > You want to non-destructively remove this component and you've already > lifted a track. > > I'd stop now and practise on something that doesn't matter. Removing > something like > a 4 pin molex power connector from a dead (recent:-)) hard drive or > similar is > probably the sort of difficulty you want? > > Antonio > arcarlini at iee.org I'd second that.. And use a good de-soldering tool. I use a Hakko 808 desoldering gun. My hot air rework station has an option for a desoldering attachment but the gun is serving me well. Just change the flux filter regularly and clean it out well. ------------------------------ Message: 16 Date: Sun, 08 May 2011 00:55:54 +0100 From: Pete Turnbull <pete at dunnington.plus.com> Subject: Re: Desoldering a chopper transistor To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> Message-ID: <4DC5DC0A.9020207 at dunnington.plus.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed On 07/05/2011 18:58, Rob Jarratt wrote: > It is indeed a TO220 and I do need to test it. Ah, that ought to be doable with a 40W iron. When I described using my 100W Weller, I was thinking of bigger stuff with metal cans! > After sending my request I > had an idea and took the board to a local jeweller, he was able to remove it > for me by using a very fine drill to drill out the just the pins themselves. I hope those holes weren't plated-through ;-) -- Pete Peter Turnbull Network Manager University of York ------------------------------ Message: 17 Date: Sat, 7 May 2011 18:09:05 -0700 From: Mark Meiss <chaosotter76 at gmail.com> Subject: Enormous lot of vintage microcomputer stuff for sale (Bloomington, IN) To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Message-ID: <BANLkTimPW3gPjqQPYcx52XiV1sfPdPDaSg at mail.gmail.com> Content-Type: text/plain; charset=windows-1252 Hello to the cctalk list after a long absence! My wife and I own a small business specializing in vintage computers and electronics, especially 1980s microcomputers and game consoles. We?re in the process of moving from Bloomington, Indiana, out to California, and as part of that move, all of our inventory has to go! Because we are anxious to complete our move quickly, we need to sell everything as a single bulk lot. If you?re a fan of the technology or looking to start your own related business, this is a chance to acquire a mother lode of great old stuff. There are some real treasures included -- we hope that you?ll be able to give these computers a good home. Included are almost 100 systems (Apple, Atari, Commodore, TI, Sinclair, and more); thousands of disks, tapes, and cartridges; over a thousand books and magazines; electronics test equipment; and more. The complete list of stuff is available at http://bit.ly/izaYpw ( https://docs.google.com/document/pub?id=1JS2fRLSfeOoI27Otf-Zhkl1f84WNZQHwM-… ) I can be contacted by email at squunkin at gmail.com, or leave a message on our Google Voice number at (408) 676-6467<https://www.google.com/voice/b/2?pli=1#phones>and I?ll get back to you. (Serious offers only, please -- and feel free to pass the word along to any interested friends!) The sale will go to the best offer from the most reasonable person as quickly as we can manage it. Here are the basic terms and conditions: - We must sell as a single lot and cannot split off individual items. This is not negotiable -- I?m in California, and the inventory is stored in Indiana. (Obviously, we can?t handle returns either.) - This is a LOT of stuff; you will certainly need a U-Haul track or the like. (I?m not a pro at this, but I?d estimate a 20? truck.) - Once the sale has been arranged, I?ll make a trip back to Indiana to help you load up your truck: you?re not on your own. This makes it very important to me to establish a firm pick-up date. I can be flexible about the day of the week. - We cannot guarantee the condition of individual items and must sell as-is: most of this stuff is at least 20 years old. We have always tried to test new equipment as it arrives, and most of the media have been kept in a controlled environment. - Southern Indiana is humid and subject to flooding, and there is a chance that some items may have some moisture damage. If we discover in the process of loading that any items of particular interest to you are damaged, we can adjust the final sale price accordingly. Please let us know about those items in advance! - The list of items we?ve compiled is not exhaustive, but represents a large sample from our inventory database. There?s more. - We currently have around 3-4 dozen WYSE and Falco terminals available, most of which power on. Please let us know ASAP if you want them included -- otherwise, they?ll be heading to recycling on May 14th. - If you have any questions, please ask! I will try to respond to every enquiry with 24 hours. ------------------------------ Message: 18 Date: Sat, 07 May 2011 22:06:52 -0600 From: Richard <legalize at xmission.com> Subject: Re: Enormous lot of vintage microcomputer stuff for sale (Bloomington, IN) To: cctalk <cctalk at classiccmp.org> Message-ID: <E1QIvGe-0007Iu-6j at shell.xmission.com> In article <BANLkTimPW3gPjqQPYcx52XiV1sfPdPDaSg at mail.gmail.com>, Mark Meiss <chaosotter76 at gmail.com> writes: > Because we are anxious to complete our move quickly, we need to sell > everything as a single bulk lot. Good luck with that. Pretty much everything listed there is obtainable incrementally and few people are interested in buying huge lots of things when they could obtain them incrementally. I understand its what's easiest for you, but given the economy its probably better to cater to the buyer. -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com> ------------------------------ Message: 19 Date: Sat, 7 May 2011 23:51:17 -0700 From: Mark Meiss <chaosotter76 at gmail.com> Subject: Re: Enormous lot of vintage microcomputer stuff for sale (Bloomington, IN) To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Message-ID: <BANLkTik=WNawSCVKv_FD5t3ybq2tVa6RXg at mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Well, yes, I imagine that few people are, but we're hoping for exactly one, and here seems likelier a place than most. (Not to mention that Bloomington isn't so far from Dayton, and the Hamvention is coming right up in a few weeks.) We're not looking for top dollar (the move is a good move), but a chance to try to transfer these things en masse to somebody with an understanding of what they are -- hence the desire to avoid eBay if possible. On Sat, May 7, 2011 at 9:06 PM, Richard <legalize at xmission.com> wrote: > > In article <BANLkTimPW3gPjqQPYcx52XiV1sfPdPDaSg at mail.gmail.com>, > Mark Meiss <chaosotter76 at gmail.com> writes: > > > Because we are anxious to complete our move quickly, we need to sell > > everything as a single bulk lot. > > Good luck with that. > > Pretty much everything listed there is obtainable incrementally and > few people are interested in buying huge lots of things when they > could obtain them incrementally. > > I understand its what's easiest for you, but given the economy its > probably better to cater to the buyer. > -- > "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download > <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> > > Legalize Adulthood! <http://legalizeadulthood.wordpress.com> > ------------------------------ Message: 20 Date: Sun, 8 May 2011 10:47:47 +0100 From: <arcarlini at iee.org> Subject: RE: Desoldering a chopper transistor To: "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org> Message-ID: <865E15B734024AA98E807E829C8F7704 at ANTONIOPC> Content-Type: text/plain; charset="us-ascii" Tony Duell [ard at p850ug1.demon.co.uk] wrote: > Don't tell me that you've never lifted a track. If you do I will have > to conclude that you've never worked on a PCB :-) I've lifted my fair share of tracks (possibly more, just natural greed I guess). Once or twice I've had to put down wire to make up for my clumsiness, although mostly I've lifted tracks on scrap that I don't care about (I just wanted whatever component it might have been). Antonio arcarlini at iee.org ------------------------------ Message: 21 Date: Sun, 8 May 2011 10:57:39 +0100 From: "Rob Jarratt" <robert.jarratt at ntlworld.com> Subject: RE: Desoldering a chopper transistor To: "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org> Message-ID: <03ed01cc0d66$5f623a40$1e26aec0$(a)ntlworld.com> Content-Type: text/plain; charset="US-ASCII" > -----Original Message----- > From: cctalk-bounces at classiccmp.org [mailto:cctalk- > bounces at classiccmp.org] On Behalf Of arcarlini at iee.org > Sent: 08 May 2011 10:48 > To: 'General Discussion: On-Topic and Off-Topic Posts' > Subject: RE: Desoldering a chopper transistor > > Tony Duell [ard at p850ug1.demon.co.uk] wrote: > > Don't tell me that you've never lifted a track. If you do I will have > > to conclude that you've never worked on a PCB :-) > > I've lifted my fair share of tracks (possibly more, just natural greed I guess). > > Once or twice I've had to put down wire to make up for my clumsiness, > although mostly I've lifted tracks on scrap that I don't care about (I just wanted > whatever component it might have been). > > Antonio > arcarlini at iee.org And just for the record, I have not actually lifted a track. The track damage is strange and I am not entirely convinced it was me because it is a little distance from the pin, perhaps 5mm away and it is a break in the track. It looks like I could have let the iron slip across it, but I don't recall that happening, and the break seems too wide for the size of bit I was using. Is it possible there might have been a latent track defect that the heat from the iron revealed? Regards Rob ------------------------------ Message: 22 Date: Sun, 8 May 2011 08:05:54 -0400 From: "Andrew Lynch" <lynchaj at yahoo.com> Subject: S-100 EPROM boards are here! To: <cctalk at classiccmp.org> Message-ID: <6B4661ED29914CC8B690BC223940C2F3 at andrewdesktop> Content-Type: text/plain; charset="us-ascii" Hi! The S-100 EPROM PCBs have arrived! These are updated respins of the S-100 EPROM board from last summer with minor corrections and improvements. The S-100 EPROM board supports a wide variety of EPROMs, EEPROMs, FLASH memories, and Static RAMs in 8 or 16 bit modes. It supports many common 28 pin and 32 pin chips. More information is available at John's S100computers.com website here: http://s100computers.com/My%20System%20Pages/PROM%20Board/PROM%20Board.htm The board is $20 plus $3 shipping in the US and $6 elsewhere. Please send a PayPal to LYNCHAJ at YAHOO.COM and I will send your boards right away! There are plenty of PCBs so even if you weren't on the waiting list there should be plenty to go around. Thanks and have a nice day! Andrew Lynch PS, I have some S-100 4MB SRAM boards, S-100 parallel ASCII keyboard interface boards, and S-100 Serial IO boards left too in case you'd like to get some of those and save on shipping. ------------------------------ Message: 23 Date: Sun, 08 May 2011 09:37:15 -0700 From: "Chuck Guzis" <cclist at sydex.com> Subject: RE: Desoldering a chopper transistor To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Message-ID: <4DC6644B.215.F1880 at cclist.sydex.com> Content-Type: text/plain; charset=US-ASCII On 8 May 2011 at 10:57, Rob Jarratt wrote: > And just for the record, I have not actually lifted a track. The track > damage is strange and I am not entirely convinced it was me because it > is a little distance from the pin, perhaps 5mm away and it is a break > in the track. It looks like I could have let the iron slip across it, > but I don't recall that happening, and the break seems too wide for > the size of bit I was using. Is it possible there might have been a > latent track defect that the heat from the iron revealed? Take a close look at the gap. It's not unusual to see board revisions done this way--just a bit of tape on the master negatives to do a cut in a trace. If the edges of the break look smooth and straight under magnification, you most likely have your answer. Do not attempt to bridge gaps such as this! --Chuck ------------------------------ Message: 24 Date: Sun, 8 May 2011 12:43:59 -0700 (PDT) From: David Griffith <dgriffi at cs.csubak.edu> Subject: pdp11 CPU on S100 board? To: cctalk at classiccmp.org Message-ID: <alpine.DEB.1.10.1105081242480.23678 at sleipnir.cs.csubak.edu> Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII Given that old Soviet knockoffs of pdp11 cpus can be found on ebay, I was wondering if anyone else has thought of making S100 boards containing said processors. -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? ------------------------------ Message: 25 Date: Sun, 8 May 2011 13:02:24 -0700 (PDT) From: Roger Ivie <rivie at ridgenet.net> Subject: Re: pdp11 CPU on S100 board? To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Message-ID: <Pine.NEB.4.63.1105081301490.1826 at stench.no.domain> Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed On Sun, 8 May 2011, David Griffith wrote: > > Given that old Soviet knockoffs of pdp11 cpus can be found on ebay, I was > wondering if anyone else has thought of making S100 boards containing said > processors. I'm pretty certain there used to be one. Osprey, IIRC, built around a J-11. -- roger ivie rivie at ridgenet.net End of cctech Digest, Vol 93, Issue 10 **************************************

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latin stuff

by dgriffi＠cs.csubak.edu

Si des purgamentum purgamentum accipietis Noli turbare cuium simia virgas tonitrui Si duo sunt in una camera turpis vento facit, qui sciunt et feci -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

15 years, 2 months

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MARCH computer history library

by evan＠snarc.net

MARCH (Mid-Atlantic Retro Computing Hobbyists) will debut part of its vast library of computer history at the VCF East this weekend. The collection includes full runs of the first few years of Byte, Compute, Creative Computing, Dr. Dobb's Journal, SCCS Interface, Interface Age, Kilobaud, and more. We also have the early years of the People's Computer Company newsletter, anthologies of the early years of the West Coast Computer Faire, a variety of machine-specific publications, and early issues of various user group newsletters (some on CD). Not to mention * hundreds * of computer books (and related topics) from the 1940s-1980s and zillions of manuals / user guides. Our full library will be organized later this year. It will be a reading / research library, not a lending library, except by special permission.

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Final reminder -- VCF East 7.0

by evan＠snarc.net

One last reminder .... only five days until the Vintage Computer Festival East 7.0 ..... bring your kids, they get in for free! http://www.vintage.org/2011/east http://www.facebook.com/vcfeast7

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