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

by trebor77＠execpc.com

This looks interesting. As collector of DEC systems my need is slightly different insofar as due to the rapid disappearance of ST506 (MFM) drives I need to make say an IDE drive look like a an ST506 drive to a DEC MFM controller. I concur. I have a CompuPro 816 System with a Q540 MFM 40 Meg HD that is getting shaky. Sure would like to be able to use an IDE of which I have several that would work. Lets hope others will pick up the thread and maybe Andrews Group will consider creating a MFM to IDE adapter Board that would insert between the MFM Cables and the IDE Drive. I'm sure there is a lot of Older CP/M machines out there that would benefit. Bob in Wisconsin

15 years, 3 months

1
1
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Unusual CMD SCSI thing... Anyone know what this is?

by ken＠seefried.com

On 3/29/11 4:58 PM, Dave McGuire <mcguire at neurotica.com> wrote: > > On 3/29/11 1:50 PM, Jochen Kunz wrote: >> > On Mon, 28 Mar 2011 11:50:01 -0400 >> > Dave McGuire<mcguire at neurotica.com> wrote: >> > >>> >> Can the 53C90B be coaxed into doing DSSI? >> > The PCI DSSI adapters (KFPSA?), that I got with an AlphaServer once >> > uppon a time long gone, contained NCR 53C825 SCSI processors. AFAIK >> > those chips include a complete RISC microcontroler and can be tought >> > to talk neary any "language". > Sweet machine. I know the later chips are programmable, but the > 53C90B is a very old design, and I didn't think the built-in processor > was introduced that early. > Correct. The 53c9xy chips had a fixed-function, state-machine based architecture. The SCRIPTS processor was, as I recall, introduced with the 53c700 and improved in the 53c810 line. Nifty stuff, if you're into that sort of thing. KJ

15 years, 3 months

2
1
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masscomp stuff still available

by michael.99.thompson＠gmail.com

> From: Shawn Rutledge <shawn.t.rutledge at gmail.com> > To: cctalk at classiccmp.org > Date: Mon, 28 Mar 2011 00:57:41 -0700 > Subject: masscomp stuff still available > I already scrapped most of it, so what is left is the set of boards, > manuals, floppies and a mag tape, and one 8" hard drive. The boards > can fit in a medium flat rate box (I think, unless I missed something, > but it's a tight fit, depends how much bubble wrap I use) and the > manuals and disks etc. can go media mail, which will be quite cheap > considering the bulk. Anybody want it or should I just finally throw > it all in the recycling bin? > > > > ---------- Forwarded message ---------- > From: Wolfgang Eichberger <oe5ewl at gmail.com> > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > Date: Mon, 28 Mar 2011 11:05:01 +0200 > Subject: Re: masscomp stuff still available > Rhode Island Computer Museum seems to have one of this systems. (see > https://sites.google.com/site/ricmwarehouse/Home/equipment/masscomp). > maybe they need your stuff? > > -- > Wolfgang Eichberger - OE5EWL > Operating System Collector > Blog: 5ewl.blogspot.com > Homepage: www.eichberger.org Since we have no spares or documentation for the MASSCOMP, the RICM would gratefully accept a donation. If you are from the US you can even claim a tax deduction for a charitable donation. -- Michael Thompson

15 years, 3 months

1
0
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OSI C1P currently on ebay...

by wh.sudbrink＠verizon.net

To anyone who might be considering bidding on this lot: http://cgi.ebay.com/OSI-Ohio-Scientific-Challenger-1P-/160565653395?pt=LH_De faultDomain_0&hash=item2562756f93 I would suggest that you look closely at the enlarged version of the third photograph. The case does not appear to contain a full "Superboard" OSI 600 board. I'm not sure what this thing is, but it is not a normal C1P. In the fifth photo, I think you can see the cable header for the video and cassette I/O hanging loose inside the case. Bill Sudbrink

15 years, 3 months

1
0
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Let me say: WOWZAS

by evan＠snarc.net

Newest addition to the MARCH Computer Museum library is the first several years of the People's Computer Company newsletters. :-) Come to VCF East to see 'em.

15 years, 3 months

1
0
0 0

what is this board?

by chrism3667＠yahoo.com

http://cgi.ebay.com/Vintage-Classic-Computer-Board-/190464352010?pt=LH_Defa…

15 years, 3 months

4
4
0 0

Unusual CMD SCSI thing... Anyone know what this is?

by ian_primus＠yahoo.com

So, in a recent pile-o-stuff, I acquired this SCSI box. The box itself is a generic two bay SCSI enclosure, but inside is mounted some kind of bus interface devices. It's a single circuit board, on a frame that mounts in a half height 5 1/4" bay. The face has a little two line LCD, and some buttons and lights. The board itself is made by CMD. Seems to be model CSB-2200/SDS. The board has what appears to be a SCSI input, and two SCSI outputs. The board contains three NCR 53C90B SCSI chips. Powering the device up, it announces itself as SCEA/S on the LCD. Now, from fiddling with the thing, and looking at what it contains, it *appears* to be some sort of SCSI-SCSI bridge, communicating with two separate busses, and allowing one external bus to use them. But I don't know. Searching on the model number have failed to turn up a manual. Searches for SCEA/S invariably turns up articles about various lawsuits that Sony Computer Entertainment of America have filed against their customers for using devices they purchased in ways that Sony doesn't like. So. Any ideas? I took some pictures: http://i.imgur.com/o9X6s.jpg http://i.imgur.com/TzV67.jpg http://i.imgur.com/SQN0b.jpg -Ian

15 years, 3 months

8
10
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Jupiter ACE PCBs at N8VEM

by lynchaj＠yahoo.com

Thread on Jupiter ACE has been updated with pictures of working home brew computer. Very nice and fits in a 3U rack. Testing continues but appears to be fully operational. Good job Sergio! Thanks and have a nice day! Andrew Lynch

15 years, 3 months

3
3
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cctech Digest, Vol 91, Issue 41

by michael.99.thompson＠gmail.com

> ---------- Forwarded message ---------- > From:?Shawn Rutledge <shawn.t.rutledge at gmail.com> > To:?cctalk at classiccmp.org > Date:?Mon, 28 Mar 2011 00:57:41 -0700 > Subject:?masscomp stuff still available > I already scrapped most of it, so what is left is the set of boards, > manuals, floppies and a mag tape, and one 8" hard drive. ?The boards > can fit in a medium flat rate box (I think, unless I missed something, > but it's a tight fit, depends how much bubble wrap I use) and the > manuals and disks etc. can go media mail, which will be quite cheap > considering the bulk. ?Anybody want it or should I just finally throw > it all in the recycling bin? > > > > ---------- Forwarded message ---------- > From:?Wolfgang Eichberger <oe5ewl at gmail.com> > To:?"General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > Date:?Mon, 28 Mar 2011 11:05:01 +0200 > Subject:?Re: masscomp stuff still available > Rhode Island Computer Museum seems to have one of this systems. (see > https://sites.google.com/site/ricmwarehouse/Home/equipment/masscomp). > maybe they need your stuff? > > -- > Wolfgang Eichberger - OE5EWL > Operating System Collector > Blog: 5ewl.blogspot.com > Homepage: www.eichberger.org Since we have no spares or documentation for the MASSCOMP, the RICM would gratefully accept a donation. If you are from the US you can even claim a tax deduction for a charitable donation. -- Michael Thompson

15 years, 3 months

1
0
0 0

FS. Siemens Nixdorf RM200c (Europe)

by roosmcd＠dds.nl

Hello, Thinning out the collection a bit, I've got a Siemens Nixdorf RM200C for sale running Sinix. There's some information about this machine on http://www.linux-mips.org/wiki/RM_200 but basically it's a Unix machine >from SNI with 133Mhz R47000 MIPS processor running their variant of Unix. I've also got a documentation set and two original sets of installation cd's for Sinix. Weight is not too bad for shipping, it's basically a standard desktop PC. with regards, Michiel

15 years, 3 months

3
2
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Xerox 860 available...

by lbickley＠bickleywest.com

Weirdstuff "rescued" (didn't scrap) a Xerox 860 and held it for me to check out. I did so, and it appears to be complete (w/o diskettes, unfortunately). It consists of the 860 CPU w/(2) 8" FDD, Keyboard, Monitor and Printer. I did not open it up to inspect it. Here's a couple of links on this system: http://www.digibarn.com/collections/systems/xerox860/index.html http://www.computerhistory.org/collections/accession/102646130 (The CHM link is a PDF of the original 860 brochure...) If you are interested in acquiring this system, please contact me off list and I'll let you know who to contact at WS. I have no financial interest in this transaction... Regards, Lyle -- Lyle Bickley, AF6WS Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero"

15 years, 3 months

1
0
0 0

Data Recovery from DEC RL02

by robin＠hx-20.com

Hello all, I know someone who wants to recover data from one of these 10MB disk packs. They have no drive, no RLV12 controller and (unsurprisingly) no PDP-11. I haven?t seen the disk pack in question so I have absolutely no idea of the condition although I am led to believe it has been looked after, stored properly and doesn?t have a crash...! Of course the pack owner has no idea of the data they?re after (whether it be ASCII, EBCDIC, binary etc..) so that?s another unknown quantity! Is there anyone here who is able to assist with this? Maybe initially to produce a binary image of the disk for further exploration? If yes, (how much) would you charge for this service? Many thanks Robin

15 years, 3 months

2
1
0 0

Data I/O Series 22 device list

by ian_primus＠yahoo.com

I have an ancient Data I/O Series 22 Prom programmer, and I'm looking for the manual/device list. I haven't used it in many years, but I know I have the paper manual with the setup instructions and such, but then there was also an expanded device list with setup codes that I had as a text file. Does anyone have that device list text file? I tried google, but wasn't able to locate it. I know I have to have it around here somewhere, either on a computer or printed out, but I can't find it for the life of me. -Ian

15 years, 3 months

2
1
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Fwd: NYT Obituary for Paul Baran (full text)

by spedraja＠gmail.com

--------- March 27, 2011 Paul Baran, Internet Pioneer, Dies at 84 By KATIE HAFNER https://www.nytimes.com/2011/03/28/technology/28baran.html Paul Baran, an engineer who helped create the technical underpinnings for the Arpanet, the government-sponsored precursor to today?s Internet, died Saturday night at his home in Palo Alto, Calif. He was 84. The cause was complications from lung cancer, said his son, David. In the early 1960s, while working at the RAND Corporation in Santa Monica, Calif., Mr. Baran outlined the fundamentals for packaging data into discrete bundles, which he called ?message blocks.? The bundles are then sent on various paths around a network and reassembled at their destination. Such a plan is known as ?packet switching.? Mr. Baran?s idea was to build a distributed communications network, less vulnerable to attack or disruption than conventional networks. In a series of technical papers published in the 1960s he suggested that networks be designed with redundant routes so that if a particular path failed or was destroyed, messages could still be delivered through another. Mr. Baran?s invention was so far ahead of its time that in the mid-1960s, when he approached AT&T with the idea to build his proposed network, the company insisted it would not work and refused. ?Paul wasn?t afraid to go in directions counter to what everyone else thought was the right or only thing to do,? said Vinton Cerf, a vice president at Google who was a colleague and longtime friend of Mr. Baran?s. ?AT&T repeatedly said his idea wouldn?t work, and wouldn?t participate in the Arpanet project,? he said. In 1969, the Defense Department?s Advanced Research Projects Agency built the Arpanet, a network that used Mr. Baran?s ideas, and those of others. The Arpanet was eventually replaced by the Internet, and packet switching still lies at the heart of the network?s internal workings. Paul Baran was born on April 29, 1926, in Grodno, Poland. His parents moved to the United States in 1928, and Mr. Baran grew up in Philadelphia. His father was a grocer, and as a boy, Paul delivered orders to customers in a small red wagon. He attended the Drexel Institute of Technology, which later became Drexel University, where he earned a bachelor?s degree in electrical engineering in 1949. He took his first job at the Eckert-Mauchly Computer Corporation in Philadelphia, testing parts of radio tubes for an early commercial computer, the Univac. In 1955, he married Evelyn Murphy, and they moved to Los Angeles, where Mr. Baran took a job at Hughes Aircraft working on radar data processing systems. He enrolled in night classes at the University of California, Los Angeles. Mr. Baran received a master?s degree in engineering from U.C.L.A. in 1959. Gerald Estrin, who was Mr. Baran?s adviser, said Mr. Baran was the first student he ever had who actually went to the Patent Office in Washington to investigate whether his master?s work, on character recognition, was patentable. ?From that day on, my expectations of him changed,? Dr. Estrin said. ?He wasn?t just a serious student, but a young man who was looking to have an effect on the world.? In 1959, Mr. Baran left Hughes to join RAND?s computer science department. He quickly developed an interest in the survivability of communications systems in the event of a nuclear attack, and spent the next several years at RAND working on a series of 13 papers ? two of them classified ? under contract to the Air Force, titled, ?On Distributed Communications.? About the same time that Mr. Baran had his idea, similar plans for creating such networks were percolating in the computing community. Donald Davies of the British National Physical Laboratory, working a continent away, had a similar idea for dividing digital messages into chunks he called packets. ?In the golden era of the early 1960s, these ideas were in the air,? said Leonard Kleinrock, a computer scientist at U.C.L.A. who was working on similar networking systems in the 1960s. Mr. Baran left RAND in 1968 to co-found the Institute for the Future, a nonprofit research group specializing in long-range forecasting. Mr. Baran was also an entrepreneur. He started seven companies, five of which eventually went public. In recent years, the origins of the Internet have been subject to claims and counterclaims of precedence, and Mr. Baran was an outspoken proponent of distributing credit widely. ?The Internet is really the work of a thousand people,? he said in an interview in 2001. ?The process of technological developments is like building a cathedral,? he said in an interview in 1990. ?Over the course of several hundred years, new people come along and each lays down a block on top of the old foundations, each saying, ?I built a cathedral.? ?Next month another block is placed atop the previous one. Then comes along an historian who asks, ?Well, who built the cathedral?? Peter added some stones here, and Paul added a few more. If you are not careful you can con yourself into believing that you did the most important part. But the reality is that each contribution has to follow onto previous work. Everything is tied to everything else.? Mr. Baran?s wife, Evelyn, died in 2007. In addition to his son, David, of Atherton, Calif., he is survived by three grandchildren; and his companion of recent years, Ruth Rothman. __ _______________________________________________ IP : A community of Interesting People devoted to improve our interconnected World. IP at wiwiw.org http://lists.wiwiw.org/mailman/listinfo/ip BLOG http://wiwiw.org/ip ***New*** -- Saludos - Greetings - Freundliche Gr??e - Salutations Sergio http://www.linkedin.com/in/sergiopedraja http://www.quora.com/Sergio-Pedraja https://www.xing.com/profile/Sergio_Pedraja ----- No crea todo lo que ve, ni crea que esta vi?ndolo todo

15 years, 3 months

1
0
0 0

masscomp stuff still available

by shawn.t.rutledge＠gmail.com

I already scrapped most of it, so what is left is the set of boards, manuals, floppies and a mag tape, and one 8" hard drive. The boards can fit in a medium flat rate box (I think, unless I missed something, but it's a tight fit, depends how much bubble wrap I use) and the manuals and disks etc. can go media mail, which will be quite cheap considering the bulk. Anybody want it or should I just finally throw it all in the recycling bin?

15 years, 3 months

2
1
0 0

FS: EAI TR-20

by pat＠computer-refuge.org

I'm working on liquidating some things to help pay for a new acquisition. And, that means that I'm finally getting around to selling one of my EAI TR-20s. Another one was donated to CHM, and I'm keeping the third one for now. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220761050013 Let me know if you have any questions. I also expect to list at least one DG Nova4 system shortly. Pat -- Purdue University Research Computing --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

15 years, 3 months

1
0
0 0

Unusual CMD SCSI thing... Anyone know what this is?

by tshoppa＠wmata.com

> It's a single circuit board, on a frame that mounts in a half height 5 1/4" bay. The > face has a little two line LCD, and some buttons and lights. The board itself is made by CMD. > Seems to be model CSB-2200/SDS. A slightly later iteration of CMD RAID controller (note that this is, in the true SCSI sense, a "controller" and not a "host adapter with smarts") has a bit more condensed packaging and very similar user interface: http://cgi.ebay.com/CMD-CRD-5440-RAID-Controller-Device-P-N-CRD-005440-304-… Chronology: CRD-5440 was late 90's. I'm guessing the one you have is an earlier iteration, early 90's? Tim.

15 years, 3 months

4
4
0 0

Free: Various Mac gear (Seattle)

by derschjo＠mail.msu.edu

As I continue to clean, I continue to unearth stuff I no longer have too much of a need for. For example, I have no idea why I have 10 classic-form-factor Macintoshes. Sure, they're cute, but perhaps ten is too many? Perhaps you would like one of them? Here they are: - Mac 512Ke - Needs repair (analog board needs some TLC). Someone at some point hacked the rear case up in order to fit a Mac Plus motherboard in there (different port arrangement). Otherwise, a fine looking Mac (yellowed as they all seem to be.) I can provide this with both the 512K board and the Plus board, if you want. - Mac SE - No hard drive or floppy, analog board needs repair, serious screen burn-in, and the case is fairly yellowed. No case screws. Looks like 4mb of memory. - Mac Classic - In great shape (no yellowing), 4mb RAM, 80mb drive, currently has System 7.5 on it. Screen size vacillates a bit on disk access, perhaps a power supply problem? - Mac Classic II - In great external condition (no yellowing at all) but shows signs of bad RAM at startup (vertical bars on the display). I cannot find my mac-cracking Torx wrench or I'd open it up and verify what it's got in it. Screen looks nice, drive spins up... I also have a pair of spare Mac SE boards. I do not know if they work, but I see no reason why not. They look to be fully populated with 4mb RAM, each. No keyboards or mice are included with these (oddly enough, I find myself without any to spare...) Anyone interested? I'll be donating these to RE-PC in Seattle next weekend if there are no interested parties here. I'd prefer local pickup, but I could probably be convinced to ship these, since they're pretty small and easy to pack... - Josh

15 years, 3 months

2
1
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Jupiter ACE PCBs at N8VEM

by lynchaj＠yahoo.com

Hi! One of the N8VEM builders (Sergio) has made a home brew computer that is compatible with the Jupiter ACE. He would like to know who else would like to get PCBs. Please see the N8VEM mailing list for more details. http://groups.google.com/group/n8vem/browse_thread/thread/92dffe470cf5f8a8# <http://groups.google.com/group/n8vem/browse_thread/thread/92dffe470cf5f8a8> On a completely different topic Another N8VEM builder (Sergey) has made a home brew XT compatible ISA board He would like to know who would be interested in PCBs. http://groups.google.com/group/n8vem/browse_thread/thread/e39d06eb9d4518a3 Thanks and have a nice day! Andrew Lynch

15 years, 3 months

1
0
0 0

MicroVAX 3100 Model 95 Damaging SIMMs?

by robert.jarratt＠ntlworld.com

I have a MicroVAX 3100 Model 95 (KA51) which seems to be damaging my SIMMs. It will work for a while and then one or more SIMMs will fail. The failed SIMMs have always been in SET 0. Sometimes it has been just one SIMM, this time it seems to have been the whole set of 4. Is it really possible for the CPU to do this? Anyone got a KA51 they don't want? Regards Rob

15 years, 3 months

2
5
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Don't buy from ebay seller carp-o-matic

by legalize＠xmission.com

<http://legalizeadulthood.wordpress.com/2011/03/25/dont-buy-from-ebay-seller…> -- "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, 3 months

1
0
0 0

on the trail of Mel, the Real Programmer

by jonnosan＠gmail.com

Many of you will be familiar with the story of Mel, the Real Programmer [ http://www.pbm.com/~lindahl/mel.html ] in which Ed Nather (writing in 1983) relates his experience from 20 years previously in attempting to patch a BlackJack program written by his ex-colleague (Mel Kaye) for the ancient RPC-4000 computer, and how the complexity of the code he had to work through left him so impressed with Mel's familiarity with the inner workings of the computer that he abandoned the attempt to patch the code and even 20 years later, he still held Mel as the archetype of a "Real Programmer". I first came across the story on a BBS sometime the early 90s, at a time when I was just starting to become competent with x86 assembly code, and self-modifying code was a pretty fascinating idea, as was extreme performance optimisation. Then recently I came across the Mel story again, and went looking to see what (if anything) of the legendary machines and codes had made their way into the retro-computing archives across the net. The 'holy grail' would be a copy of the original BlackJack program with the back-to-front cheat option, and major bragging rights would come from being able to make the patch that Ed Nather had given up looking to make. I'm not there yet. What I have found so far is: - What looks to be a dump of a paper tape copy of the BlackJack game for the LGP-30, the predecessor to the RPC-4000 [ ftp://ftp.informatik.uni-stuttgart.de/pub/cm/lgp30/papertapes/Games/bkjck.tx ] - A copy of the RPC-4000 reference manual, with description of registers and opcodes [ http://www.bitsavers.org/pdf/royalPrecision/RPC-4000/RPC-4000_Programming_M… ] - Documentation for the RPC-4000 version of BlackJack, written by Mel Kaye, including what seems to be a writeup of the feature that Ed was asked to make work correctly ("PLAYING CONVENTIONS...8:. If SENSE SWITCH 32 is depressed, there is a better than normal chance of an ace being dealt as the player's first card"). [ http://www.bitsavers.org/pdf/royalPrecision/RPC-4000/programWriteups/W1-01.… ] >From looking at the opcodes in the programming manual, I believe that the loop in question must have been based around opcode 21 "COMPARE MEMORY GREATER", with the eventual 'overflow' to opcode 22 (TEST MINUS). I don't know what sort of work this loop would have been doing, although given the program documentation clearly states program execution starts at 00000, and that is also where (in the story) control is eventually transferred to once the loop exits, the loop must have been some kind of post-game cleanup, ready to re-start. So my current theory is - the data stored in the upper memory locations is the card deck, (stored initially perhaps as numbers 1..52) - as cards were "dealt" they were marked as such by (e.g.) setting the sign bit - the loop without apparant exit is going through the pack removing the 'dealt' marker, prior to being shuffled at the start of a new game. It is apparent that Ed's memory was not completely accurate; not completely surprising given the 20 year gap from when the events occurred until when they were documented. He mentions the clue that helped him understand the way the loop exited as being the fact that the index register bit was set even though Mel never used the index register, and says this index register bit is "between the address and the operation code in the instruction word". However reference manual is clear that the index register bit is the least significant bit, and in fact the opcode bits (0..4) are adjacent to the data address bits (5..16). I can't see any way the index bit could have been part of the loop/overflow.

15 years, 3 months

1
0
0 0

Faulty Apple Lisa 2/10 Drive - No longer an issue

by jonas＠otter.se

ard at p850ug1.demon.co.uk (Tony Duell) wrote: > All the religions that I've come across require oyu to beleive in > that > religious system to get to their idea of heaven. As an agnostic, I > don't > meet any such criteria. So if there is a hereafter, I am going to end > up > in hades... > > -tony Assuming that religions actually know or really care about what their particular deity thinks, says and/or means. IMO religions do not necessarily represent their deity correctly, they are prone to (mis)interpreting their own scriptures to suit their own personal interests. If there is a hereafter, I would expect a lot of people to be unpleasantly surprised after their deaths. However, we shall all find out sooner or later :-D /Jonas

15 years, 3 months

1
0
0 0

IBM system/32 for sale - Omaha, NE

by tosteve＠yahoo.com

I am passing this info on - I have no connection or further info: ----------------------- Dave has for sale what looks like a complete IBM System/32 computer system near Omaha, NE. It's describe as "From January 1975 - a low-end business computer." Here's the IBM webpage: http://www-03.ibm.com/ibm/history/exhibits/rochester/rochester_4017.html See Dave's many fine photos of his system here: http://picasaweb.google.com/IBMSystem32/ Contact HIM at: ibmsystem32 at gmail.com -----------------------

15 years, 3 months

1
0
0 0

Faulty Apple Lisa 2/10 Drive -READINGS!

by terry＠webweavers.co.nz

Found those capacitors. Yes, they were indeed the trio that were clustered together. All the -ve sides clustered together, and the +ve wired to a motor output connection just as you said. I spent tonight extracting the IC and the capactors. It went surprisingly smoothly considering this is probably the smallest circuit board I've worked on in terms of closeness of tracks. Now to just wait until the ICs arrive from Hong Kong. I hope it's not by slow boat. I've ordered and paid for the ICs but have yet to hear any kind of acknowledgement apart from the standard paypal reciept. I've also bought an X/Profile emulator. Luckily I've managed to sell one of my Osborne 1s for $340 NZ (about $255US) to help part-pay for it! So, here's hoping BOTH Lisas will be up and running 100% soon!. An ominous sign in the Lisa 2 though. Yesterday it would just suddenly switch off I was testing this drive. A little jiggling and waiting a while, then a switch on and it would suddenly go again. Could be something loose, or could be the PSU starting to give up the ghost. I have a spare working (I think) PSU, so I might have to call that into service....or attempt a repair if that's indeed the problem. Maintence/repair is an ongoing process with this old iron isn't it. Terry > Take a look at one of those HP drive schermatics I mentioned. If you are > working from one of 'my' schematics, oyu want ot look at the sheet > entitled 'Sony Floppy Drive Spindle Motor Sheet (3)'. You'll see the > TA7259 chip. Connected to the inputs are the 3 hall devices H1-H3. > Connected ot the outpus are the 3 motor windings -- notice how the other > end of these windings are all linked together, but go nowhere else -- > that's the 'star' (or 'wye') configuration I was talking about. And just > to the left of the widnigns are 3 capacitors C11, C12, C13 wired in > another star circuit. > > I have no idea what the capacitors will be labelled on your PCB. They are > likely to be a simular value. See if you can find 3 cpaacitors, arounf > 10uF each, with the +ve side wired to a motor output connection on the > chip and the 3 -ve sides all linked together. It might be the 3 > capacitors cludered just to the right of the chip in the photo, it might > not. You cna use the resistance range of your multimeter to check what is > connected to what, of course. > > Alas without the PCB in front of me (and thus being able to trace > connections) I don;t think I cna be more definite. > > -tony > > > > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1204 / Virus Database: 1435/3442 - Release Date: 02/13/11 >

15 years, 3 months

12
42
0 0

FS: Televideo Terminal

by nick.allen＠comcast.net

I have one left, last 2 sold for $150, this one has quite abit of yellowing and several lab stickers on it, therefore I am only asking $100. It is fully functional, buyer to pay for actual shipping (or free local pickup, I am in Chicago)

15 years, 3 months

3
3
0 0

where the P112 kits are

by dgriffi＠cs.csubak.edu

Feedle I were under the impression that the P112 kits from that last bit we didn't know existed were sent out in January. An email from someone wondering where his kit was the first hint that something was wrong. Here is the email I got from Feedle regarding this problem: ===begin quote=== I'll ship him a kit on Thursday. I don't have the spreadsheet handy: send me his address directly and I'll generate a label today for tomorrow's mail run. We may have a problem, however. So, I handed the kits to the "[Person] Friday/Executive Assistant" at the executive office suite I have my office at back in January. About a month ago, I noted that there is a new person at that desk. I didn't think much of it, but I remember overhearing a water cooler conversation about how the previous one was fired. I sent an E-Mail message yesterday to the EA role account asking if she could look in the USPS account to see when they were shipped and what the tracking numbers were. "Oh, you didn't hear?" is never a good thing when starting this sort of conversation. Apparently, the previous EA was fired in early February, precisely because she was so bad at her job that .. well, she wasn't doing it. So, the short of it is, there's no tracking numbers for the packages sent, if they were even sent at all. The only evidence that they have that the packages I gave them even existed is the fact that when I dropped them off she put them in the log for billing purposes (it's worth noting that my internal account was charged for the flat-rate postage). There is no record in either the Click N Ship account they use, nor in the paper logs they keep for packages that are hand-handled and metered with the conventional postage meter. Where the packages actually are is, at the moment, an exercise left to the reader. I'm now really worried: because according to my notes, that makes two out of the eight (?) people who ordered kits from you who haven't received them. In looking at the notes: I _DID_ ship Steve Hirsch a kit in that January shipment. I'm obviously not happy about this from the "services I'm paying for as a tenant in a fairly pricey executive office center" perspective. The Management has already assured me that they will compensate me somehow for the lost materials... but I stressed upon them that the worst part is the "one-of-a-kind" nature of the kits: that this was the tail end of a production run, and I don't have enough parts to just make more. Plus, there's the lost goodwill: you personally depended upon me to get those kits shipped out, and I probably let you down. Anyway, I'm going to meet with the office manager in a couple of hours to have a more in-depth conversation about what can be done about this. I'll keep you posted. ===end quote=== Since the email was sent, I had a phone conversation with Feedle about this. The kits were found stashed in a cupboard along with some seventy other packages this now ex office assistant never posted. So, you WILL get your kits. -- 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, 3 months

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Ebay fee change as of 4/1

by jws＠jwsss.com

I read an AP article that says that Ebay will start charging as the Ebay fee charge, not 10% of the selling fee or $50, whichever is less, but rather 10% plus the shipping charges. I would encourage everyone here who is selling a 300# printer for $50 to take a close look at whether to sell anything on ebay anymore if this is accurate. I sort of sympathize with Ebay in trying to clamp down on the crop of people who now have low prices (buy it for a buck) but $30 shipping costs. However this move pretty much makes me want to pull everything I have, as there will be a negative outflow on my account by my calculation for my Wyse terminals ($40) etc. by the time I sell them. I'm not interested in paying people to take my stuff. Jim

15 years, 3 months

15
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HP150 Touchscreen again

by ard＠p850ug1.demon.co.uk

A couple of months ago I asked about diagnosing problems with the TOuchscreen board in an HP150. Well, I took some time off that project [1] but finally got back to it. I decided in the end to make a text unit that would plug into the touchscreen PCB, produce the clock signal, accept the sync and data signals and display the status of the 35 beams on LEDs. [1] Sort-of classic computer related. I've been writing a set of articles for HPCC on how to fix HP9800 machines. Being me, I built it from TTL (actually HC and HCT parts). It only took me a couple of afternoons do design and build it. It starts with a 4MHz master clock, divided down with a couple of '393 counters. A '30 adn '138 produce a paair of spaced clcok pulses from this, a '02 combines one ofthes with the sync signal from the tocuhscreen. These are all latched in a '175 to procude 3 clocks -- the clock to the touchscreen PCB, a clock to sample the data from the touchscreen PCB and an end-of-scan pulse to latch the received data and send it to the LEDs. The data is shifted into '4094 shift registers/latches whihc feed a couple of rows of LEDs. The powrr supply stats as 12V from my bench supply. That feedsthe +ve input of the touchscreen. A 7805 powes the logic and LEds inthe test box. And a 7660A provides the -12V supply for the tocuhscreen PCB. Anyway, after connecting it to the defective tocuhscreen PCB, I found that one of the beams appeared to be blocked all the time. Blocking other beams got the appropriate response from the test box, so I was pretty sure the logic was all working properly. Since I knew which beam was malfunctioning, I tested its IR LED in-circuit with an ohmmeter (system powered down, of course, It read differnetly >from the others either side of it, so I desoldered it and tested it out of circuit. It's open. So the guy who told me that the emitter (LED) was the most likely failure was right. Now all I need to do is find a replacement. -tony

15 years, 3 months

2
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Jean Bartik

by evan＠snarc.net

Last of the original ENIAC programmers died this morning. :( http://blogs.computerworld.com/18018/jean_bartik_last_of_the_original_eniac…

15 years, 3 months

1
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IBM 1130

by cc＠informatik.uni-stuttgart.de

Hi everyone, I've transferred all IBM 1130 diagnostic decks and put them on our FTP server (ftp.informatik.uni-stuttgart.de/pub/cm/ibm1130/cards/diags). I've also added the several maintenance manuals for the IBM 1442 reader-punch to the docs directory. Christian

15 years, 3 months

1
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CMD CDI-4240 DSSI-SCSI converter - help needed

by p.gebhardt＠ymail.com

Hi everybody, during the upcoming weeks, I'm going to migrate my web- and ftp-server from an Alphaserver 4100 to my VAX 4000-300 (running VMS). In order to obtain enough disk space for ftp combined with little energy consumption, I'd like to get to work this decent DSSI-SCSI converter from CMD. Problem is that the only documents, I found on bitsavers, are for the CDI-4000 with a different PCB, having less jumpers and connectors, plus being at different positions than on the board I have. Can anybody give me a little help with the jumper configuration of that thing ? Or better, have docs regarding jumper and connector meanings ? Exact model is : CDI-4240/AF with a LCD display at the front. Help is heavily appreciated and helps making the VAX as the new host for my web- and ftp-server a success ! Best regards, Pierre ------------------------------------------------------------------------------- Pierre's collection of classic computers : http://classic-computing.dyndns.org/

15 years, 3 months

1
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KLH10 Status / any1 tried to compile on Windows?

by oe5ewl＠gmail.com

Hi all, after stumbling around in the internet I ran across KLH10 again. Having it up and running fine and smoothely on my linux box I thought it'd be nice to have it run on my Windows-Laptop I have to use for work too (my only M$-Box here, runs Win7/64bit). Anyone already tried to compile KLH10 under Windows? Did a quick try, but get stuck loads of compiler errors /warnings. At least with my Standard MinGW/Code:Blocks dev.toolchain. Okay, I didn't tweak much. Maybe someone already got it to compile, I'd appreciate if you'd be willing to share code with me. Otherwise I'd begin to fix the various compiler-warnings and errors. By the way: KLH-10 development seems to be paused at the moment - does anyone know something about the current status? Regards, Wolfgang -- Wolfgang Eichberger - OE5EWL Operating System Research Blog: 5ewl.blogspot.com Homepage: www.eichberger.org

15 years, 3 months

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Anyone have a Fluke 9010A Z-80 pod to sell?

by ethan.dicks＠gmail.com

Hi, All, I know that pods are rarer than base units, but I thought I'd ask if anyone had a spare 9010A Z-80 pod to sell. Lately, I've been using my 6502 pod (which I got from another list member some time ago) to debug Static PET issues, and it looks like I might be helping to restore some vintage arcade machines including a Gorf (which is Z-80 based) and I'd like a pod to match. I'd also probably use it to track down a memory problem I have with a TRS-80 Model III that seems stuck at 32K (testing the RAM in a working Dynamic PET is not revealing any bad chips). So before hitting certain auction sites and such, I wanted to check here first. Thanks, -ethan

15 years, 3 months

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RL02 drive tuneup

by greid57＠o2.co.uk

Hi all, this thread has turned up at the right moment... I'm beginning to resurrect an 11/23 system so I can get stuff off an batch of old RL01's & RL02's. If it hadn't been for the comments about the foam filter, I'd have found out the hard way! The foam was like an exihibit from the Mummy's tomb - just crumbled away as soon as it was touched! So, I suppose it's safe to run the drive for a while *without* this filter, but is there anything to use as a short-term substitute? Also, if I leave the head-lock in place, and try to run up the drive with a pack, would it run up to speed so I could leave it to 'purge' the pack before powering-down and *then* allowing the heads to load? These packs and drives have not been stored in the best conditions, which is why I want to take precautions. Thanks for any suggestions, Graham Reid

15 years, 3 months

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DEC Q-bus and compatable boards

by useddec＠gmail.com

Here is a partial list of DEC boards I have available. I have approximately 100 DEC compatable boards, including Dilog and Emulex. Shipping is $10 for one boarrd and $15 for two or more within the US. (Please inquire if outside the US.) If you need anything not listed, please feel free to contact me off list. M3107 DHQ11 $30 M7504 DEQNA $35 M7546 TK50 $25 M7559 TQK70 $50 M7944 MSV11-B $20 M7949 LAV11 $39 M8943 DLV11-J $75 M8044 MSV11-D $20 M8186 1123cpu $75 M8189 1123+ $125 Thanks, Paul

15 years, 3 months

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KLH10 Status / any1 tried to compile on Windows?

by oe5ewl＠gmail.com

KLH10 under some sort of linux under Virtualbox under Windows is doable. With networking. Configuration can be a bit tricky, but usually isn't. An atom box could be a elegant way to but, spoken for me, I definately need something portable to carry around. Thank you for all answers so far, Regards, Wolfgang -- Wolfgang Eichberger - OE5EWL Operating System Research Blog: 5ewl.blogspot.com Homepage: www.eichberger.org 2011/3/22 Zane H. Healy <healyzh at aracnet.com>: > At 4:17 PM -0700 3/21/11, Rich Alderson wrote: >> >> The usual response from that quarter to running KLH10 on Windows is that >> one ought simply to use a VM and run it on Linux. > > This was my thought. ?One question, how well does networking function in > such a setup? > > Another solution would be a cheap Intel Atom box running Linux. ?This is the > route I've wanted to take, just haven't found the time or money. > > Zane > > > > -- > | Zane H. Healy ? ? ? ? ? ? ? ? ? ?| UNIX Systems Administrator | > | healyzh at aracnet.com ? ? ? ? ? ? ?| OpenVMS Enthusiast ? ? ? ? | > | ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?| Photographer ? ? ? ? ? ? ? | > +----------------------------------+----------------------------+ > | ? ? ? ? ? ? ? ? ? ? My flickr Photostream ? ? ? ? ? ? ? ? ? ? | > | ? ? ? ? ?http://www.flickr.com/photos/33848088 at N03/ ? ? ? ? ? | >

15 years, 3 months

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ANN: DiscFerret R0031 Microcode and C API 1.1r1

by classiccmp＠philpem.me.uk

Hi guys, I've just uploaded the DiscFerret R0031 Microcode and a new version of the C API (libDiscFerret) to the DiscFerret website: http://discferret.com/wiki/DiscFerret:Downloads Changes include: * Microcode 0031 - Add a "track 0 reached during seek" status bit. This is cleared when a seek begins, and set if the seek operation was terminated because the TRACK0 input went active. - Fix some issues with "over-seeking" (in some cases, the DiscFerret could send a seek pulse even though TRACK0 was active). * Libdiscferret 1.1r1 - Add support for the "track 0 reached during seek" status bit - Add support functions for disc seeking: set seek rate, recalibrate, seek relative and seek absolute. These remove the need to play bit-twiddling games with the various seek controller registers: simply figure out which track you want, and tell the library to seek to that track. The register changes have been ported to the Python API, but the seek functions have not. "Porting these functions to Python is left as an exercise to the reader." I'm still working on a proper C-API tutorial, but the Doxygen documentation should be enough to figure out the basics. Last but not least, in case you missed my "King of the Lab" comment earlier this week -- I've got a working pinout for the NEC 8in floppy drive used in the early-PC98-series external drive box. You also have to flip a jumper... I know, real difficult :) Details on how to make this work with a DiscFerret will be posted "soon". As in, as soon as I figure out how to create a fairly nice looking, readable pin-connection diagram... Comments, bug reports and feature requests are, as always, welcome. Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 3 months

1
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DEC 872-A power controller docs?

by tiggerlasv＠aim.com

On Mon Mar 21 13:04:33 CDT 2011, Chris Elmquist chrise at pobox.com wrote: > Then the very bottom panel piece on mine has a roughly 1" x 3/4" > rectangular hole cut in it near the right side. A white rocker switch > with ( 1 / 0) embossed on it will fit that hole though and serve as my > master on / off for the rack (via that 872-A PDU) I guess. Most (if not all) of the "newer" BA11 chassis and/or power supplies will already have the same 3-pin connector you're talking about. If you have a BA11-L chassis, take a peek at the H777 power supply. It has a power distribution board that should have a 3-pin molex connector marked "J5". Connecting this pin-for-pin to the 3-pin connector on your H872-A power controller will turn on all of the switched outlets on the power controller, whenever the 11/34 is powered up. You can daisy-chain addiitonal power controllers, using the 2nd 3-pin connector on the H872-A. As for the hole on the kick-plate. . . I'm not sure what that's for -- I've seen it before though. T

15 years, 3 months

2
1
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Three phase and IBM

by bknittel＠quarterbyte.com

Anyone have direct, real-world experience in setting up three phase for IBM gear, particularly the 3880 and the 3803 (dasd and tape) controllers? I need to know how to determine if the setup needs to be wye or delta. And, if you're local to the SF Bay Area, there will be some smoke-test parties coming up. (Scary parts of the work performed by a licensed electrician). Hands on help before, during and after will be appreciated. Pizza will be provided.

15 years, 3 months

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DEC 872-A power controller docs?

by chrise＠pobox.com

Are there any documents for a DEC 872-A Power Controller floating around? The 872-A is a 12A, 110V power distribution/control unit that I have in the bottom of my "corporate rack". Specifically I'm interested in what the signaling is on the two, 3-pin Molex jacks labled "DEC Power Control Bus", which presumably is a means to remotely control the power to the devices in the rack via this PDU. Chris -- Chris Elmquist

15 years, 3 months

7
13
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Three phase and IBM

by jonas＠otter.se

Fred Cisin wrote: > Don't necessarily trust "electricians" or utility companies either! > > 35 years ago, in a brand new building (roof, but no floor yet), landlord's > electrician and PG&E wired the three phase for my compressor wrong, > providing ~200 volts to all of the outlets. Today at lunch, one of my co-workers told us about an occasion a number of years back, when an electrician at the local electricity company (in a small town in Sweden) had made a wrong connection, feeding the whole area about 300V instead of 220V. Apparently it cost the power company millions to replace all the freezers and fridges that had burnt out. /Jonas

15 years, 3 months

1
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IBM 1130 restoration @ VCF East

by evan＠snarc.net

Yet another awesome reason to attend VCF East 7.0: witness the beginnings of a "live restoration" of our museum's IBM 1130 mainframe, conducted by Norm Aleks and Brian Knittel, both of http://www.ibm1130.org ... they're traveling all the way from Berkeley, California. http://www.vintage.org/2011/east http://www.facebook.com/vcfeast7 http://www.snarc.net/vcfe7flier.pdf

15 years, 3 months

1
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Three phase and IBM

by bknittel＠quarterbyte.com

Examination yesterday showed: * All connectors have 4 pins, and one wire is green * Labels in most of the gear just says "see manual" but two pieces are clearly (and multiply) labeled "wired for 208V" * Schematics show everything wired phase-to-phase, no neutral * 110V "convenience outlets" are run from a step-down transformer between 2 phases So, it appears to be 208V delta. I can run this from a wye-output transformer, though, right? Its plate says 208V phase-to-phase. Brian

15 years, 3 months

2
1
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Three phase and IBM

by brian＠quarterbyte.com

One thing I forgot to mention: all of the three phase plugs have a label that indicates the required phase direction.

15 years, 3 months

1
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Anyone have a big iMac collection?

by trag＠io.com

> Date: Sat, 19 Mar 2011 17:27:36 -0700 > From: Bruce Damer <bdamer at digitalspace.com> > Hi folks, does anyone in the Bay Area or California have a big "multi > color" iMac G3 collection (from late 1990s-2001 or so)? A guy is > asking the Digibarn about this but all we have is one Bondi Blue model. > I remember seeing photos of some guy's basement, which was well appointed with stylish furniture and it was all holding his collection of macs in a ready-to-use fashion. Part of his collection was a large assortment of "flavors" of imacs. It was a truly impressive display. Unfortunately, I have no memory of where I saw these pictures. I'd guess it was a link from 68kmla or applefritter, but I am not certain of that. Someone on one of those two sites might have a clearer memory of what I'm thinking of. Of course, there's no saying that the collection is still extant, nor that it's geographically located as you specified. Jeff Walther

15 years, 3 months

1
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Manuals / jumper map for NEC FD1165 with G9NYB PCB

by classiccmp＠philpem.me.uk

Hi guys, Does anyone have a copy of the OEM manual (or service manual) for the NEC FD1165 disc drive variant which had the "G9NYB" controller board? I've got one of these on the bench, which I'm trying to attach to the DiscFerret. The jumper settings don't make sense, and the location and function diagrams in the manual on Bitsavers are for a drive with a G9NYF controller board... Does anyone have a jumper map or a copy of the manuals for this thing? Thankfully the power connector was labelled -- thank you NEC! Unfortunately the two DIL terminator resistor packs have been snaffled, and I'd rather like to know if the G9NYB used the same 150-ohm resistor pack the G9NYF used before I go installing a bunch of MR25 resistors in their place (seeing as I haven't got any 150R x8 DIL packs) Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 3 months

4
15
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Smoke From PSU Socket

by robert.jarratt＠ntlworld.com

I was given a DELNI recently, but it did not seem to work so I unplugged it for later inspection. I just plugged it in now and it went up in smoke, knocking out all the sockets in the house. I have opened it up and the curious thing is that none of the capacitors has or any other component of the PSU is showing any signs of damage, there is scorching only around the socket itself. I am not knowledgeable on PSUs, what does this mean? Thanks Rob

15 years, 3 months

6
6
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Three phase and IBM

by CCTECH＠beyondthepale.ie

> >Examination yesterday showed: > >* All connectors have 4 pins, and one wire is green >* Labels in most of the gear just says "see manual" but two pieces are clearly > (and multiply) labeled "wired for 208V" >* Schematics show everything wired phase-to-phase, no neutral >* 110V "convenience outlets" are run from a step-down transformer between 2 phases > >So, it appears to be 208V delta. > >I can run this from a wye-output transformer, though, right? Its plate says 208V phase-to-phase. > Yes. If there aren't any three phase loads that care (such as motors), then you don't need to worry about which order the phases are connected in. The only other thing I can think of is to check that the transformer can supply the required current. Regards, Peter Coghlan.

15 years, 3 months

1
0
0 0

Radio Shack Science Fair manuals

by p.tomasik＠uj.edu.pl

Hi, I have found your message from 2006 y. about science fair 200-in-one manual. cat no 28-249 I have found just this model in the basement and i like to give it to my children. however it has no manual. I will be grateful if you could send me an electronic copy of your manual. I will be able to send you scans of Marklin (germany) catalogue of Trains 00 and 0 gauge and some model cars from 1938 y. if you wish. Best regards Przemek -- dr hab. med. Przemys?aw Tomasik Zak?ad Biochemii Klinicznej Polsko-Ameryka?ski Instytut Pediatrii Uniwersytet Jagiello?ski Collegium Medicum ul. Wielicka 265 30-663 Krak?w, Polska

15 years, 3 months

1
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