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

by brianlanning＠gmail.com

It appears that the quadra 700 I just received from ebay has no rom simm. Does anyone know where I can get one, other than waiting an unknown amount of time for ebay to produce one? thanks. brian

17 years, 5 months

2
1
0 0

PSU: 5, 12, 24 VDC

by cclist＠sydex.com

Lorne, I've got some old Power One siwtchers tucked away. I'll see if I can find one that's in working shape. They are, IIRC, +24, +12 and +5 (maybe also -5). The problem with using a PC XT power supply is that the current requirement for the +24 is substantial. Cheers, Chuck

17 years, 5 months

1
1
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PSU: 5, 12, 24 VDC

by cclist＠sydex.com

Forgot to mention that I've also got a +24v SMPSU, so that's a bailout just in case one of the P1's don't work. Cheers, Chuck

17 years, 5 months

1
0
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Looking for IBM XT or 8086 based clone.

by silvercreekvalley＠yahoo.com

Hi, Anyone have a IBM XT or clone machine for sale? It needs to be an 8086/V20 or V30 processor and in a working state and preferably in the U.K. Contact me off list if anything available. Thanks Ian.

17 years, 5 months

1
0
0 0

Cashtrac.exe ???

by eric2erica1962＠westnet.com.au

Dear sirs Yes I was with cashtrac but seems to have disappeared off the system Can anybody help me get it back Or Have they a disc I can borrow er

17 years, 5 months

1
0
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1" paper tape buy ?

by dm561＠torfree.net

If you can't arrange a group buy and you don't mind white/unprinted then I could send you a couple of rolls; I don't see myself doing anything with my PPT perfs and readers any time soon - think of it: loading Vista from PPT... ;-) Email off-list if interested. mike --------------------------------------------------- Date: Wed, 25 Feb 2009 20:47:09 +0100 From: Henk Gooijen <henk.gooijen at hotmail.com> Subject: 1" paper tape buy ? Hi all, I was searching for a company that sells 1" unoiled paper tape, here in The Netherlands. No luck. After googling and many pages, I found a company in the USA: http://www.wncsupply.com/paper-tape-rolls.html I would like to buy one or two rolls of 1000 ft, order# 0400A, R-V-PU471 Unoiled / Printed Top Arrow yellowish color, but it comes in either a package of 28 rolls (1) and weighs 40 lbs, or in a quart package, 7 rolls, still a weight of 10 lbs. The 7 rolls package costs $80. That OK, but the shipping costs would make it quite expensive. My question is simple. Are there people on this list who also want to buy some rolls of 1" nice looking yellow paper tape? I would take 2 (or 3) rolls. Hint: Get a paper tape reader from an old CNC machine from eBay. (I bought one for $30 and another for $79 two weeks ago). You can interface such a reader to a computer, in my case the SBC6120 ! Think of it ... booting the SBC6120 from a paper tape. Is that cool? The site also sells nice reels (http://www.wncsupply.com/reels.html). I wanted to buy the 4" blue ones, but again shipping costs, aarggghh. However, a nice lady from the company emailed me that she is looking into the shipping costs, as the costs quoted on their site is a bit high. I hope to hear from one or two people also looking for a few paper tape rolls ... Please contact me off list. Links to other companies that sell 1" paper tape are also welcome! Thanks, - Henk, PA8PDP

17 years, 5 months

18
36
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[FS] IBM 5028

by pontus＠Update.UU.SE

Hi. There is a guy selling an odd ASR-33 called the "IBM 5028 Operator Station". There was an ebay auction: #190289859981 But it didn't sell. If anyone is interested, the guys email is in the second of the two (short) threads about it here: http://www.vintage-computer.com/vcforum/showthread.php?t=14491 http://www.vintage-computer.com/vcforum/showthread.php?t=14643 Cheers, Pontus.

17 years, 5 months

1
0
0 0

3B2 install tape woes (or: Wangtek 5125ES docs/jumper info)

by derschjo＠mail.msu.edu

Hi all-- Had a random desire to get my 3B2/600G running again over the weekend (this machine was the first computer I ever used UNIX on, for better or for worse...) after finding a working 300MB CDC Wren SCSI drive for it. (The UNIX install media for this machine only supports a very limited selection of drives -- it's possible to get the machine booting from an unsupported drive, but it requires having a running UNIX on a supported drive first, as far as I know.) Unfortunately, disaster struck halfway through the installation -- the tape drive's roller turned to mush. I checked it out before running the install and it seemed fine -- it was a solid rubber wheel -- but I guess something about actually running it caused it to break down. I managed to fix the roller, but the tape got goo all over it and despite my best efforts at cleaning it, that section of tape is unreadable so I can't reinstall. Fortunately, I have backups of the UNIX install tape files on my PC (several versions thereof, in fact)-- so you'd think it'd be a simple matter of attaching the tape drive to the PC and dd'ing over the files... but I'm not having any luck on any of the machines I've tried. I can only manage to copy over one file; attempting to write subsequent files fails. I have a failing drive w/a partial UNIX install for the 3b2 that boots about half the time, so I tried to do the same from the 3B2 w/this drive installed and it has the same problem writing >1 file, so it looks to be an issue with the drive and not the controller/OS. The drive is a Wangtek 5125ES, a 125MB (or 120MB, if you believe AT&Ts docs) drive. The error I get on from my Linux PC: dd: writing /dev/nst0: Input/output error st0: Current: sense key: Medium error Additional sense: Filemark detected Info fld=0x1 st0: Error on write filemark (I've of course tried different tapes, with the same result.) This is of course the only drive I have that's capable of writing tapes in this format, and of course the 3B2 isn't happy with any other tape drive I have... Anyone have any jumper settings for this drive? Anyone experienced this problem? Thanks, Josh

17 years, 5 months

1
0
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A trip to the bay area

by pat＠computer-refuge.org

I'm going to be making a trip with a friend out to San Francisco, leaving this weekend for a few days, and am still looking for things to do. I've already figured out the obvious (visit CHM, some surplus places, some hiking), and was wondering if anyone had any ideas, or had a collection of big iron to show off while I'm there. :) Pat -- Purdue University Research Computing --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

17 years, 5 months

1
0
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Anybody need Compact flash cards?

by woyciesjes＠sbcglobal.net

Please reply directly to me, I'm quite behind on my ClassicCmp reading... :) A friend of mine has about 8 or 9 Compact FLash cards, sizes from 256 MB - 1GB. Anybody have a good use for them? -- --- Dave Woyciesjes --- ICQ# 905818 --- AIM - woyciesjes --- CompTIA A+ Certified IT Tech - http://certification.comptia.org/ --- HDI Certified Support Center Analyst - http://www.ThinkHDI.com/ "From there to here, From here to there, Funny things are everywhere." --- Dr. Seuss

17 years, 5 months

1
1
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Another batch of manuals / brochures that must go

by auringer＠tds.net

Hello again, Here are a few more things that need a new caretaker or are going to be recycled. Look at the pictures and make me an offer. Shipping from Madison, WI 53714 USA. http://www.flickr.com/photos/jja572 Fujitsu drives: M2351A/AF Mini - Disk Drive CE Mannual M2372K - Engineering Spec. (2 copies) M2331K/M2333K - Eng. Spec M2344K - (shown in picture, but not available) Precision Standard Time Inc: Brochures for models 1020 & 1030 Control Data: Brochure and product spec for 9715-500 & 9771 fixed disk drives Twin Cities Disk Division: Spec. for 8" Module Family Intel: iAPX 432 Interconnect Architecture Reference Manual IBIS Systems Inc: IBIS 1400 Unit Spec. Jon

17 years, 5 months

2
1
0 0

Free for cost of posting q-bus camac interface

by hp-fix＠xs4all.nl

I have free for the cost of shipping a Kineticsystems Camac q-bus interface pulled from a Mirco Vax II a long time ago. It's including a short flatcable I'll put a picture on flickr http://www.flickr.com/photos/hp-fix/3341557688/ Please contact me off-list. -Rik

17 years, 5 months

4
4
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is it possible to rebuild old c64 hardware enhancements?

by dm561＠torfree.net

---------------Original Message: Date: Fri, 6 Mar 2009 10:56:44 -0500 (EST) From: der Mouse <mouse at Rodents-Montreal.ORG> Subject: Re: is it possible to rebuild old c64 hardware enhancements? >>> Why are you so intent on STEALING from anybody that you can't >>> easily find? >> Copyright violation - even if that's what this is, a poin ton which >> I am deliberately not chipping in - is not theft. [...] > Ooh, another fun battle. :) Heh. Actually, in an attempt to forestall a reaction I've had when making that point in other places: I didn't say there was nothing wrong with it; I said it is not theft, and that using language based on equating the two merely further confuses an already confused area. (The reaction I'm trying to forestall is the "oh, so you think there's nothing wrong with [...sketch of copyright violation, usually further conflating it with theft...], hmm?" one.) Mouse --------------Reply: It's not just theft; apparently copying a piece of software is equivalent to hijacking a tanker off the coast of Somalia, holding it and the crew for millions in ransom, perhaps killing a few along the way, etc., or the older images of slashing cutlasses, raping and pillaging, etc. No doubt the same punishment will soon apply... m ****

17 years, 5 months

5
7
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is it possible to rebuild old c64 hardware enhancements?

by chrism3667＠yahoo.com

--- On Sun, 3/8/09, blstuart at bellsouth.net <blstuart at bellsouth.net> wrote:After all, it did immeasurable damage to western civilization to have unfettered access to the intellectual property of Shakespeare, Newton, Bach, Mozart, Beethoven, and Babbage. We ceratinly wouldn't want to make the same mistake with Mickey Mouse and Excel. (Said dripping with bitter sarcasm...) BLS ?But all that *code* is? immeasurably old. Which is ok in my book (in many instances 20+ year old code is also ok in my book). But you're not suggesting recently developed code should fall into the same category? Thou shalt not muzzle the oxe when it's treading out the alfalfa sprouts. Or something close.

17 years, 5 months

2
1
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Punched cards (Was: 1" paper tape buy ?

by dm561＠torfree.net

--------------Original Message: Date: Wed, 4 Mar 2009 14:39:41 -0800 (PST) From: Fred Cisin <cisin at xenosoft.com> Subject: Punched cards (Was: 1" paper tape buy ? Does anybody object to changing the subject line? My father used to claim that the only reason for existence of the round-hole, 90, 96 column cards was that IBM patented the particular rectangular shape of their holes. He also claimed that IBM patented the whole idea of using a brass roller for card reading, and that that ALMOST worked to cripple the rest of the industry, until somebody finally got photocell card reading working. --------------Reply: IBM did indeed patent the rectangular holes used in their 80 column cards. Whether the brass roller was a major factor is questionable; after all, their competitors also used punched cards. But there's no question that the general acceptance of IBM's card format and their locked-in customers were instrumental in IBM becoming the giant that they did; while their competitiors struggled during and after the depression, punch card sales helped IBM survive and grow. As late as the mid-fifties punch card sales represented 30% of IBM's bottom line; see: http://www.cbi.umn.edu/hostedpublications/pdf/IBMRochesterHistory.pdf mike

17 years, 5 months

8
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Wow! RP06 on Ebay

by bqt＠softjar.se

Pontus <pontus at update.uu.se> wrote: > Tobias Russell wrote: >> > Yep, but I would make the space. Alas though the logistics of getting it >> > across the Atlantic are too great so I'll have to keep dreaming of such >> > things. >> > >> > Out of interest any fellow DEC collectors got an RP series disk on any >> > of their machines? The last ones I saw was about 20 years ago on an >> > 11/40. >> > >> > Toby >> > > > The local computer club has RP06 and RP07 that was connected to a > DECsystem-20, but they have not been running for many years. Actually, two RP06 and one RP07 ran on Magica (one of our 11/70) a little more than 10 years ago. AIDA (2060) ran with one RP07 and three RP06 until 19 years ago. CARMEN (2060) ran with one RP07 and one RP06 until 15 years ago. All the hardware is still around, but only the 11/70 sees some action these days, and then with RA90 disks (as you know ;-) ). I would think that the disk drives and packs are still fine, but we should probably be a bit careful when/if starting them up. Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol

17 years, 5 months

1
0
0 0

low-capacity compact flash

by dgriffi＠cs.csubak.edu

Does anyone here have any low-capacity compact flash cards to get rid of? I'm talking around 256 megs or less. -- 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?

17 years, 5 months

4
4
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Wow! RP06 on Ebay

by toby＠coreware.co.uk

Just spotted this on comp.sys.dec: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=320347786935 Looks like an amazing item for some lucky soul. Just wish I wasn't in the UK, bit of a long drive to pick up. Toby -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

17 years, 5 months

7
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Fwd: VAX field maintenance print sets

by auringer＠tds.net

Hello, Some of you may recall this post I sent way back in November. I received a couple of responses to the original offer, but I failed to follow through (life intervened). I have been in communication with Guy Sotomayer, who was the original first offer. He is still willing to "rescue" these things, but already has copies of them. So, we decided to see if anyone else is interested in them. If you are interested in them, I will send them off for the cost of shipping. Otherwise I will let Guy rescue them from my evil lair. :) In addition to the list below, I have found the field maintenance print set for the RP07 drive. This pile of paper will increase the weight by about 13lbs. Point of origin is still Madison, WI 53714 USA I would really like to clear this stuff out as soon as I can. Thanks for listening, Jon > Date: Sun, 23 Nov 2008 13:19:12 -0600 > From: Jon Auringer <auringer at tds.net> > To: "cctalk at classiccmp.org" <cctalk at classiccmp.org> > Subject: VAX field maintenance print sets > > Hi all, > > While cleaning, I have come across the following field maintenance print sets. I am inclined to dump them in the recycle bin, unless someone _really_ wants them. The total weight is about 22lbs from Madison, WI. > > All are "B" size (11x17") - > > UNIT ASSEMBLY 11780 (3" worth) > KU780 > (2) 11780 MEMORY ASSY > TAPE DRIVE TU78 > TEE16 SYSTEM > MAGNETIC TAPE DRIVE TE16 > H9206-M EXPANDER CAB > > If interested, reply soon. > > Jon > > Jon Auringer > auringer at tds.net

17 years, 5 months

1
1
0 0

S-100 backplane board spacing

by lynchaj＠yahoo.com

S-100 backplane board spacing Hi, here is a rough draft of the PCB layout for a low cost S-100 prototyping PCB I am considering.? The primary goal is to make this PCB affordable yet still useful to S-100 hobbyists.? It is not intended to be a full blown S-100 system or a permanent backplane but rather a bench tool.? Keeping the costs low means a small number of connectors and?avoiding features such as termination, etc.???Having a small number of connectors minimizes the bus length and reduces the need for termination.? A benefit of this backplane is a hobbyist could use it to develop new boards and/or repair older ones without risking damage to a costly or rare vintage S-100 chassis. ? The builder would have to supply the necessary S-100 voltages from their own power supply.? The power supply interface is just PCB pads that could have a connector or just direct wired to the supply.? Possible power supply solutions would be off the shelf SMPSUs to supply +15VDC, -15VDC, and 9VDC to the rails or alternatively surplus laptop adapters could be modified to supply the necessary power.? A small number of boards reduces the need for large power supply capacity. ? The 13x2 dual row header connectors are optional for use as a stand alone S-100 backplane.? However, they are necessary for my own project which will use?this PCB.? PCB construction will be the usual double thickness PCB for rigidity and double weight traces for current capacity. ? http://n8vem-sbc.pbwiki.com/f/Printing%20S100-Backplane-full-brd.pdf ? If you would be interested in a PCB, please contact me off list.? My intent is to keep this consistent with the other N8VEM PCBs so the target price is $20 each for the PCB only plus shipping.? There is no estimate for arrival for the PCB as of now.? I am only trying to gauge what, if any, interest there might be in the S-100 hobbyist community. ? Constructive comments, suggestions, and questions appreciated.? Thanks and have a nice day! Andrew Lynch

17 years, 5 months

3
3
0 0

UNIX funny, classic computing relevant

by slawmaster＠gmail.com

I was just browsing around on UP and found http://up.update.uu.se/DSK%3AHUMOR1%3BUNIX%20TEST I took the test and got 0x72, "operator", not bad for being born after half the things mentioned were retired :) John -- "I've tried programming Ruby on Rails, following TechCrunch in my RSS reader, and drinking absinthe. It doesn't work. I'm going back to C, Hunter S. Thompson, and cheap whiskey." -- Ted Dziuba

17 years, 5 months

20
21
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surplus DEC power controllers

by jim＠g1jbg.co.uk

Hi, I have two spare DEC 877-F power controllers (the type used in the 11/84 and 11/94). These are configured for 240V, single phase. I'm happy to post them anywhere at cost, but would prefer them to be collected. They are free, but I'm always interested in DEC stuff - any one got any covers for a BA 23 box? Regards Jim.

17 years, 5 months

1
0
0 0

Edge punched cards

by FJGJR1＠aol.com

Hi! Don' forget about the edge punched cards of "McBee Keysort Cards" so popular in the 1960's, at least in the USA! I still have a box of them in our basement waiting for the dumpster. Sure brings back memories of how things have changed so much in managing data on a personal basis. They really helped me with my Ph.D. thesis in organic chemistry with respect to all the references for doing the research and also for writing the thesis. I think I saw someplace on the internet a few months ago that someone was interested in them. If I recall correctly, they were possibly thinking about some sort of automated system of accessing them so that the info could be put into a computer. The cards were from sort of past big project. So you may want to do a Google search and see what you come up with. Frank PA USA In a message dated 3/6/2009 5:11:57 P.M. Eastern Daylight Time, ard at p850ug1.demon.co.uk writes: Thining of edge-punched cards... The original membership cards for the Cambridge University Computer Preservation Society had 8-level paper-tape punchings along the bottom edge giving (IIRC) 'CUCPS' (im ASCII),. the member's computer userid (ditto) and the membership number (3 bytes, binary). I don;t think anyone ever tried to machine-read them though. -tony **************Need a job? Find employment help in your area. (http://yellowpages.aol.com/search?query=employment_agencies&ncid=emlcntusye…)

17 years, 5 months

1
0
0 0

S-100 backplane board spacing

by ajp166＠bellatlantic.net

Hi Andrew, Before you commit you may want to consider bus termination for the data/address/control lines. One area a troubles can s100 to host bridge grounding and signals. You really want the N8VEM and you S100 to ahve excellent grounds between them. Also since your using Z80 S100 spec is that a8-15 are an echo of A0-A7 during IO operations. Not all S100 Z80's did that but many did and some fo the older IO boards expected that as it allowed easier routing for the board. You may have to have bus timing issues as ALL Z80 baords had to bend the Z80 timing to S100 timing. I assume the bridge baord will do that. Beware, no matter how well you design due the variables and ages of some boards you will have boards that refuse to behave. It's a side effect of early 8080 S100 and later Z80 S100 and then finally IEEE696 and the subtle differnces that evolved. Allison > >Subject: RE: S-100 backplane board spacing > From: "Andrew Lynch" <lynchaj at yahoo.com> > Date: Sat, 07 Mar 2009 10:43:54 -0500 > To: <cctalk at classiccmp.org> > >S-100 backplane board spacing > >Hi, here is a rough draft of the PCB layout for a low cost S-100 prototyping >PCB I am considering.? The primary goal is to make this PCB affordable yet >still useful to S-100 hobbyists.? It is not intended to be a full blown >S-100 system or a permanent backplane but rather a bench tool.? Keeping the >costs low means a small number of connectors and?avoiding features such as >termination, etc.???Having a small number of connectors minimizes the bus >length and reduces the need for termination.? A benefit of this backplane is >a hobbyist could use it to develop new boards and/or repair older ones >without risking damage to a costly or rare vintage S-100 chassis. >? >The builder would have to supply the necessary S-100 voltages from their own >power supply.? The power supply interface is just PCB pads that could have a >connector or just direct wired to the supply.? Possible power supply >solutions would be off the shelf SMPSUs to supply +15VDC, -15VDC, and 9VDC >to the rails or alternatively surplus laptop adapters could be modified to >supply the necessary power.? A small number of boards reduces the need for >large power supply capacity. >? >The 13x2 dual row header connectors are optional for use as a stand alone >S-100 backplane.? However, they are necessary for my own project which will >use?this PCB.? PCB construction will be the usual double thickness PCB for >rigidity and double weight traces for current capacity. >? >http://n8vem-sbc.pbwiki.com/f/Printing%20S100-Backplane-full-brd.pdf >? >If you would be interested in a PCB, please contact me off list.? My intent >is to keep this consistent with the other N8VEM PCBs so the target price is >$20 each for the PCB only plus shipping.? There is no estimate for arrival >for the PCB as of now.? I am only trying to gauge what, if any, interest >there might be in the S-100 hobbyist community. >? >Constructive comments, suggestions, and questions appreciated.? Thanks and >have a nice day! > >Andrew Lynch >

17 years, 5 months

1
0
0 0

Looking for hp 10342B IA's

by benrgarza＠hotmail.com

FW: Glen Slick, Am looking for the IA's that went with the hp 10342b preprocessor. Noticed that you had it at one time. Any chance could zip me a copy and email it? Or do you know of a ftp site, web link, etc... Regards, Rick Garza

17 years, 5 months

1
0
0 0

8088 vs. 80c88

by trixter＠oldskool.org

I was always under the impression that when Intel moved to a CMOS manufacturing process for the 8088/8086, they fixed a bug regarding a repeated LODSB with a segment override -- that the REP prefix was ignored (bug) in the old 8088s, and was honored (correctly) in the newer chips. So a simple routine to try to identify the 8088 vs. the 80c88 would look something like: mov cx,2 ; test if following instruction will be ; repeated twice. db 0F3h,26h,0ACh ; rep es: lodsb jcxz Yes ; intel non-CMOS chips do not care of rep jmp Nope ; before segment prefix override, NEC and ; CMOS-tech ones does. If I run this on my 5150 with (C)1978 8088, I see the bug (cx does not update). If I run this on my 5160 with "80c88" printed on the chip, I do not see the bug (cx goes to 0). So all is well, right? Well, I use this routine in a detection library for a project I recently completed(*) and someone is claiming that the code is broken. It reports an 80c88 when the chip is *not* marked 80c88, but rather "8088 (C) 1983 Intel". So what's going on? Is the chip from 1983 actually an 80c88, since it doesn't have the bug? Or did Intel fix the bug before moving to a CMOS manufacturing process? (*) project is a CGA compatibility testing program; you can grab it from www.oldskool.org/pc/cgacomp -- Jim Leonard (trixter at oldskool.org) http://www.oldskool.org/ Help our electronic games project: http://www.mobygames.com/ Or check out some trippy MindCandy at http://www.mindcandydvd.com/ A child borne of the home computer wars: http://trixter.wordpress.com/

17 years, 5 months

2
2
0 0

books, free for cost of shipping from austin, tx

by frustum＠pacbell.net

I have box of books that I want to get rid of. The list starts with a bunch of Win32 API books. I collected them while I was writing my Sol-20 emulator. If I ever update the emulator again, I will rewrite it with wxWidgets, rather than messing with Win32 APIs again. If Win32 programming isn't of interest, keep scrolling down, as there are some other books that would be of more interest to the typical classiccmp'er. As usual, preference given to anyone who wants to pick it up, saving me the hassle of shipping. Preference to those willing to take more books. Windows 95 API How-To The Definitive Windwos API Problem-Solver Matthew Telles, Andrew Cook 750 pages + CD Windows Programming Annotated Archives Herb Shildt 520 pages + CD Windows 95 A Developer's Guide Jeffrey Richter Jonathan Locke 616 pages + CD Windows 95 A Programmer's Case Book Seven S. Chen 754 pages + CD Advanced Windows (Third Edition) Jeffrey Richter 1050 pages + CD Multithreading Applications in Win32 The Complete Guide to Threads Jim Beveridge Robert Wiener 368 pages + CD Windows 95 WIN32 Programming API Bible Book 1 Richard Simon 1378 pages + CD Windows NT File System Internals A Developer's Guide Building NT File System Drivers Rajeev Nagar (O'Reilly Press book) 774 pages + 3.5" floppy Programming Windows 95 The Definitive Developer's Guide to the Windows 95 API Charles Petzold, Paul Yao 1100 pages + CD Volumes 1-5 (that is all five volumes) of the Microsoft Win32 Developer's Reference Library Volume 1: User Interface Volume 2: Base Services Volume 3: Common Controls Volume 4: GDI Volume 5: Shell Each is around 750 pages Linux System Administration Vicki Stanfield, Roderick W. Smith 657 pages, (c) 2001 Elements of COBOL Programming Wilson T. Price, Jack L. Olson 375 pages, (c) 1977 Fortran IV (Second Edition) Organick/Meissner Standard Fortran WATFOR-WATFIV 293 pages, (c) 1974 BASIC (2nd Edition) Samuel L Marateck 475 pages, (c) 1982 York APL J. Morgan Smyth 100 pages?, (c) 1972 APL An Interactive Approach (Second Edition) Leonard Gilman and Allen J. Rose 378 pages, (c) 1976 Burroughs B 1000 Systems Interactive BASIC (IBASIC) Language Manual ~120 pages?, (c) 1974 Three ring binder holes, staples removed The Complete Rainbow Guide to OS-9 Dale L. Puckett, Peter Dibble 418 pages, (c) 1985

17 years, 5 months

2
3
0 0

12 hours for posts to appear

by aliensrcooluk＠yahoo.co.uk

According to Yahoo's timestamp I recieved this at "7 March, 2009 12:08 PM". I am replying at 9:40pm GMT 7 March. I haven't had any problem with my posts (though admittedly I don't post that often). Regards, Andrew B aliensrcooluk at yahoo.co.uk --- On Sat, 7/3/09, Robert Jarratt <robert.jarratt at ntlworld.com> wrote: From: Robert Jarratt <robert.jarratt at ntlworld.com> Subject: 12 hours for posts to appear To: cctalk at classiccmp.org Date: Saturday, 7 March, 2009, 12:08 PM I am not a frequent poster to this list, but I have noticed that any post I make seems to take 12 hours to appear. Am I doing something wrong or is this normal? I am posting this at 12:08 GMT. Regards Rob

17 years, 5 months

1
0
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6800/6820 Address decoding help...

by derschjo＠mail.msu.edu

So I've given myself yet another project to fill my ever-lessening free time with: to write a Tek 4051 emulator. I have the ROMs (thanks again, Axel) and I've coded up a nice quick 'n dirty 6800 emulation. Now I'm working on figuring out how the CPU talks to the hardware... I have at my disposal the service manuals and a disassembly of the aforementioned ROMs. I also have a physical Tek 4051, but I'm loathe to start poking the PIAs without knowing what I'm doing, given that the screen's electron beam is directly controlled by the software, it's more than possible to burn a nice hole in the phosphor if I screw up :). The CPU talks to a set of 6820 PIAs, and from there it's fairly easy to figure out what bits hook up to what devices, given the schematics (and only slightly harder to work out how they need to be manipulated, by reverse-engineering the disassembly) but I'm having a heck of a time working out what addresses the PIAs' inputs & outputs are mapped to in the CPU's address space. The Service Manual gives a tantalizingly small amount of information about this in Vol. 1 -- it actually has a table of addresses but is very vague -- for example, I now know that addresses $878C-$878F are "Y-AXIS DA/TAPE" but I don't know which ones are for which, nor do I know whether they're input/output/both, etc... looking at where these addresses show up in the disassembly makes a few things clearer, but is not enough. So it seems obvious that the actual schematics would come to my rescue here... but I'm unable to decipher them to the point where I can determine how the PIAs are actually addressed by the CPU. I chalk this up to my lack of experience in digital logic & schematic reading. I guess what I'm asking: can someone out there help me work this out (or give me some pointers on how to attack this?). I want to learn how to do this and I need a bit of assistance... The 4051 schematics are on bitsavers (yay) at: http://www.bitsavers.org/pdf/tektronix/405x/070-2286-00_4051_Service_Vol2_M… For now, I want to concentrate on working out the display controls... the related schematic pages for these are: 4_02-03 (cpu), 4_02-10 (x d/a) and 4_02-11 (y d/a). Thanks for any advice... Josh

17 years, 5 months

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Powering up a 20-year old MicroVAX II

by ard＠p850ug1.demon.co.uk

> In sending Roy the information on the markings I omitted what looks like a > "~" after the 250V marking (the casing fragment is damaged in that area), so Almost certainly the mains filter capacitors then... > the caps are probably rated for 250V AC. I can also see an X2 marking on one > of the caps (the other one is too damaged to see). As the damage is indeed > to two caps on the mains filter, I have purchased replacements which I will > be fitting this weekend. OK. If you replace like with like (same 'class', rated for 250V mains [1] and about the same capacitance value) you should have no problems. [1] Most filter capacitors sold in the UK are good for thsi, for ovious reasons. > > The rest of the PSU *appears* to be in good condition but I do not have > anything to test ESR with and I do not have a variac or the knowledge of how > to use one, so I am unsure whether I should attempt to connect the PSU to > the mains again or whether I should attempt to switch it on. If I do feel > brave I will only connect a load that I do not care too much about. Personally, I would connect it to the mains with dummy load (car bulbs or simuilar). I think it'll be OK. -tony

17 years, 5 months

1
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1" paper tape buy ?

by csquared3＠tx.rr.com

On Mon, 2 Mar 2009 11:41:14 -0800 Rich Alderson <RichA at vulcan.com> said: >> From: CSquared >> Sent: Friday, February 27, 2009 2:53 PM >> I also seem to recall that Univac or some other computer manufacturer >> actually used a 90 (?) column card for even better packing density. >> I'll leave that improved calculation to someone who actually remembers >> how many columns those cards were blessed with. > Univac 90-column cards are Hollerith cards just like the "IBM" cards. > They consist of upper and lower groups of 45 columns of 6 round punches > (instead of the rectangular punches favoured by IBM). Interesting. I don't know how I remembered the 90 columns as I never worked with a Univac computer - only IBM's and various minis which mostly didn't even have punched card readers at all. I'm not real sure I've ever even seen one of the Univac punched cards. Your description of the hole grouping sounds like maybe they encoded characters as 6-bit codes vs. the "12-1 is an A", "12-2 is a B" scheme used by IBM. I'm not real sure that's even correct either - it's been a right good while. Later, Charlie Carothers -- My email address is csquared3 at tx dot rr dot com

17 years, 5 months

13
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DSD-880 manual?

by IanK＠vulcan.com

Does anyone have a scan of the DSD-880 manual? I finally picked up one that I intend to put on my MINC-11 (it even comes with the Qbus card and cable). I've searched the "usual" sites to no avail.... Thanks - Ian The use of COBOL cripples the mind; its teaching should, therefore, be regarded as a criminal offense. - E. Dijkstra Ian S. King, Vintage Systems Engineer Vulcan, Inc. http://www.pdpplanet.org

17 years, 5 months

2
1
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N8VEM topics, S-100 and Disk IO

by lynchaj＠yahoo.com

Hi! There are a couple of projects I am working in the N8VEM Z80 CP/M home brew computer project that may be of interest to the CCTALK community. First, I am working on an ECB to S-100 bridge device am designing a small low cost S-100 motherboard as part of the project. It has 4 slots and is intended for hobbyist use testing, prototyping, debugging on a bench. There is no case, power supply, or other advanced features. It is separate from the ECB to S-100 bridge board so it can be used by itself for related projects. I tried to send a message to CCTALK previously with a URL but it never gets posted to the list. So if you are interested in seeing the design just go to the N8VEM wiki page and the PDF file is in the "ECB to S-100 Bus Bridge" folder on the lower right hand side. The design is not yet final but main goal is low cost functionality so I will not be adding active/passive termination, more connectors, power supplies, or other things which will increase PCB area unless there is a compelling reason. Second, the N8VEM Disk IO board is finally available. It has an IDE interface and FDC based on the i8272. Initial testing seems pretty good although testing has uncovered some issues. There are several devices which are known to work with the IDE ranging from older hard drives to CF units. It is all documented on the wiki and in the mailing list. Several N8VEM builders are working with the Disk IO board and development is underway. If you are interested in either of the above, please join us on the N8VEM project. All the PCBs are available and all the information for hardware and software is freely and publicly available. In particular, I would especially ask those who have S-100 backplane and/or IDE and FDC design experience for help. Even if you don't build your own system we certainly could use some expert help in making this a better project. If you have any *constructive* comments, suggestions, questions, or would just like to discuss the subject you can reply here, on the N8VEM mailing list, or contact me by email. Thank and have a nice day! Andrew Lynch

17 years, 5 months

1
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is it possible to rebuild old c64 hardware enhancements?

by dgahling＠hotmail.com

I was thinking about things like the "super card" and other drive/ copier enhancements that were made back in the day. I even had something from (super card I think) called "IHS Nibbler" (Index Hole Sensor) nibbler. which was a hardware/software copier mix, one part went inside the drive. I remember the "super card" had many different things, like a "ram card" that went inside the 1541 drive. is it possible to recreate these things? (I dont have any hardware any more) I doubt anyone owns the copyrights now, or alternatively I bet a "generic" hardware device could be made... Dan. _________________________________________________________________ Experience all of the new features, and Reconnect with your life. http://go.microsoft.com/?linkid=9650730

17 years, 5 months

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12 hours for posts to appear

by robert.jarratt＠ntlworld.com

I am not a frequent poster to this list, but I have noticed that any post I make seems to take 12 hours to appear. Am I doing something wrong or is this normal? I am posting this at 12:08 GMT. Regards Rob

17 years, 5 months

1
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C.mmp

by aek＠bitsavers.org

> wondered if anybody knew the eventual > disposition of this machine. As of a year ago, it and cm* were in storage at CMU. CHM was approached about taking them, but we heard nothing more about it since then.

17 years, 5 months

1
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Powering up a 20-year old MicroVAX II

by gordonjcp＠gjcp.net

On Sat, 2009-02-28 at 14:23 +0000, Robert Jarratt wrote: > Some have suggested it blew because I had insufficient load. I had a TK50 > and an RD53 attached, would that no be sufficient. Furthermore I did not > actually switch the PSU on, just connected it to the mains, would the load > connected to the PSU matter when the PSU is not actually switched on? I'd use a "modern" old hard disk, not one that's likely to be useful. Or a couple of car indicator bulbs. If it was plugged in but not switched on and something popped, it'll be the mains filter cap. They *do* fail, and they're easy to replace. > There was also a suggestion that the PSU would have needed switching > separately for 50Hz operation as well. The hardware manual I have for the > machine tells me how to switch between 110 and 240, but does not say > anything about switching it for frequency, so I suspect this was not an > issue here. It won't have a 50/60Hz switch, just voltage. Gordon

17 years, 5 months

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C.mmp

by chd_1＠nktelco.net

I don't know anything about the PDP-11 MIMD machine at CMU other than seeing references to it while researching the PDP-11 in general. I saw a picture on wikipedia and wondered if anybody knew the eventual disposition of this machine. It seems like a recent picture. Hopefully it is a destined for preservation. The cage makes me think of a prisoner awaiting his last walk down the "green mile".... -chuck http://en.wikipedia.org/wiki/C.mmp

17 years, 5 months

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Edge punched cards

by ard＠p850ug1.demon.co.uk

Thining of edge-punched cards... The original membership cards for the Cambridge University Computer Preservation Society had 8-level paper-tape punchings along the bottom edge giving (IIRC) 'CUCPS' (im ASCII),. the member's computer userid (ditto) and the membership number (3 bytes, binary). I don;t think anyone ever tried to machine-read them though. -tony

17 years, 5 months

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Siliconix DG506AR

by dgriffi＠cs.csubak.edu

According to a datasheet[1] I found, a Siliconix DG506AR is an analogue switch in CMOS. What are some applications for this? I found a pair of them in white ceramic in my junk pile and I don't know where they came from. [1] http://www.datasheetarchive.com/pdf-datasheets/Databooks-4/Book-27459.pdf -- 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?

17 years, 5 months

2
1
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Emulex UC07s...

by lbickley＠bickleywest.com

I just sent a confirming email out to all of you who wanted to join the group purchase of Emulex UC07, Qbus/SCSI boards. NOTE: If you did NOT receive a confirming email - and you had previously sent me an email order by Thursday (3/5), please get back to me ASAP so I can include you in the purchase. Cheers, Lyle -- Lyle Bickley Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero"

17 years, 5 months

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S-100 power supply voltage ranges

by lynchaj＠yahoo.com

________________________________ There is/was an IEEE standard for the S-100 bus; why not hew to that, regarding supply voltages? If I were designing new "retro" boards today, however, I'd go with one of the switching regulators that can be had in TO-220 packages. Basically the same appearance as the veneered and generated 7805, but far more efficient. Cheers, Chuck -----REPLY----- Hi Chuck! Yes, the S-100 crates I have at home all use +8V and 18V/-16V rails from the linear power supplies. I understand where the power standard came from and agree the standard values would be the ideal solution. However I am working on a low cost small S-100 backplane project and I'd like to know what flexibility I have with regards to power supplies in order to keep costs low. 8V SMPSUs aren't exactly common these days and you'd need at least one of those and another 18/-18V SMPSU for a S-100 backplane to work properly. Practically speaking, the linear power supplies are unregulated and generate a range of voltages probably in the 8-10V range as Allison mentioned. I am thinking a 9V and a pair of 15V SMPSUs might be just good enough to work if not a long term solution. Since my goal is to keep costs low I am trying to find less expensive options and still have a useable system. The intent of the project is a small bench unit for testing and repair of S-100 boards but not a full blown system. I agree with Barry and Dwight to keep the voltage rails just about 3V above the 7805/7812 SCRs output for efficient regulation without excessive heat. However, 9V SMPSUs are really common and cheap on eBay and could be readily converted if not optimal, at least they'd be useable for a while without destroying anything. Add a pair of 15V SMPSUs and for less than $50 you'd have a usable S-100 PS system. I don't think you could make a S-100 linear PS for that low cost. Maybe I could put a high current silicon diode in line with the 9V SMPSU and drop it to like 8.4V? That'd be closer to the 8V standard. I posted a schematic and PCB layout on the N8VEM wiki but whenever I post the URL to CCTALK it never makes it to the list. I suspect it's being spam filtered or something. I believe the actual useable ranges of the S-100 unregulated power supply is about 8V to 10V, 15 to 20V, and -15 to -20V. For current capacity since the PCB is only 4 slots, I am thinking on the order of 1V per slot should be sufficient. There are some older S-100 boards that will exceed that limit like those massive 8K SRAM boards but if you are working on one of those probably not all the slots would be used. At any rate, I am swamped with my current N8VEM related projects and the S-100 backplane project is on slow simmer for a while. Thanks and have a nice day! Andrew Lynch

17 years, 5 months

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S-100 power supply voltage ranges

by dm561＠torfree.net

As a matter of fact Cromemco's later systems easily ran 68020s at 16.7 MHz on their S-100 / IEEE696 bus backplanes. mike ************************************* Date: Thu, 5 Mar 2009 19:21:53 -0800 (PST) From: Michael Hart <imsaicollector at yahoo.com> Subject: RE: S-100 power supply voltage ranges CompuPro and Cromenco were state of the ART IEEE 696. The back place was supposed to be able to handle higher than a wopping 10MHz Michael Hart Trader Kiosk 201-290-3796 michael at traderkiosk.com imsaicollector at yahoo.com I, the unwilling, was led by the unqualified, to do the unbelievable for so long with so little, that I attempted the impossible with nothing......" --- On Thu, 3/5/09, Chuck Guzis <cclist at sydex.com> wrote: From: Chuck Guzis <cclist at sydex.com> Subject: RE: S-100 power supply voltage ranges To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Date: Thursday, March 5, 2009, 10:11 PM On 5 Mar 2009 at 18:56, Fred Cisin wrote: > But, . . . > would the standard, even early versions, such as presented by George > Morrow and Howard Fullme at the West Coast Computer Faire, really embody > the SPIRIT of S100 without at least a few non-standard signals? Heh. Was it the SOL-20 that tied the Data In and Data Out lines together? Would you consider the late Godbout/Compupro boxes to be the height of S-100 development? Cheers, Chuck

17 years, 5 months

1
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Roland DG CC122 CGA monitor information

by jrr＠flippers.com

I have an old Roland DG CC122 (switchable IBM/Apple) CGA colour monitor and I was wondering if anyone here had any information on it. Trying to find out if it has a monochrome mode for a test fixture application... Thanks, John :-#)#

17 years, 5 months

2
1
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Manuals & books that need a new home

by auringer＠tds.net

Hi all, I have the following items that are looking for a new home. Tektronix 9100 DAS manual SCO Xenix manual set w/Excelan "The LAN Workplace" manual & disks Books on 1-2-3 & dBase Misc hardware manuals (PC) Pictures are available here: http://www.flickr.com/photos/jja572 Make me an offer above shipping cost to make it worth my time to box it up. Anything not claimed in the next week or so shall most likely end up in the recycle bin. More to items to come in the near future. Jon

17 years, 5 months

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Not abandoned, but...

by rtellason＠verizon.net

One of the things that I'd have liked to do with my Osborne Executive is to put double-sided drives into it. That single-sided nonsense was always an irritation. :-) The problem with this is that I don't know if there is a "standard" format for this. Maybe what the O-3 (Vixen?) used, perhaps? I know that had DS drives in it. One thing I'd need even if I dropped a couple of DS drives in there is to be able to format DS disks. Which means I'd need source code for their formatting utility. Does anybody know what happened to this stuff when Osborne went under? Who bought that stuff up? Where such source might be found? Or if it even exists? -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, a critter that can be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin

17 years, 5 months

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Last Call: Emulex SCSI Controllers available...

by lbickley＠bickleywest.com

Requests have been "straggling" in just about every day since I made this offer, most for one but some for a number of these boards. In fairness to those who signed up right away (including myself), I am setting a deadline of Thursday, March 5 to get your order in. On Friday, March 6, I will send out an email to all who tentatively said they wanted a/some board(s) on what should be our next step in making this bulk purchase happen. Regards, Lyle ---------- Forwarded Message ---------- Subject: More Info RE: Emulex SCSI Controllers available... Date: Thursday 26 February 2009 From: Lyle Bickley <lbickley at bickleywest.com> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> I've received a number of responses from folks - and a few questions. Here's answers to the most common questions: 1) Is there a warranty? Yes the boards are guaranteed by the dealer to not be DOA. I just re-checked - and he's agreeable to a 15 day warranty. My guess is that if you went a few more days, he'd cover it - but he would like whoever gets the boards to check them out right away. ALL boards will be pre-tested by the dealer on a QBUS system using RT before shipping. All will have the latest EPROMS. 2) Is it standard QBUS (i.e., not "S") Yes. 3) Is the SCSI port standard 50-pin? Yes. Lyle ---------- Forwarded Message ---------- Subject: Emulex SCSI Controllers available... Date: Thursday 26 February 2009 From: Lyle Bickley <lbickley at bickleywest.com> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> I was chatting with a DEC broker recently regarding SCSI controllers for DEC gear - when he mentioned that he had a quantity of Emulex UC07's available. UC07's are QBUS cards which have a single SCSI port and support either MSCP or TMSCP (in RT land, that would be either DU or MU devices). The manual states that the UC07 is compatible with RT, RSX, RSTS/E and Ultrix versions which support MSCP or TMSCP. The dealers initial price was high (as expected). However, he then added - "I'd be willing to do better for hobbyists - as long as they commit that the boards will only be used for hobby purposes - and not for commercial use". So here's the "deal": $235 per UC07 plus shipping from Mountain View, CA (FedEx Ground). I've paid MUCH more for SCSI interfaces for my DEC QBUS and UNIBUS systems - so IMHO, this is a great deal. The broker said he did not want to deal "individually with a bunch of hobbyists" - so he asked if I would be willing to consolodate a single order of UC07's to him. I reluctantly said "yes", as this is not my business and I'm not interested in making money on this deal - only covering costs. To get a sense of interest, please reply to me privately if you'd like one or more if these "critters". The manual for the UC07 is available on bitsavers. A link to a bitsavers mirror is below: http://bitsavers.vt100.net/pdf/emulex/UC0751001-F_UC07_Feb90.pdf Regards, Lyle -- Lyle Bickley Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero" ------------------------------------------------------- -- Lyle Bickley Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero" ------------------------------------------------------- -- Lyle Bickley Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero"

17 years, 5 months

2
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is it possible to rebuild old c64 hardware enhancements?

by chrism3667＠yahoo.com

I'll need an explanation of how simply viewing 25 year old code is tantamount to "stealing". Utilizing it w/o modification could be. Much much code is found in textbooks, internet, etc. There's generally not too much that's *original* (i.e worthy of protection) that was written 25 years ago. I personally don't want to even look at code that is *original* or *owned* in any sense. In other words I don't want to be influenced by any code that, if emulated to whatever extent, and found_it's_way into a creation of mine, could cause a problem if you know what I mean. But I find it awfully hard to believe that there's much that's 25 years old that would fall into that category. Looking at something is simply that. If some printouts were mistakenly tossed out and I happened to find them, am I a "thief" for picking them up and checking them out??? If code was posted on the internet, and happened to actually *belong* to someone in whatever sense, am I breaking the law by viewing or even downloading and studying that code? --- On Thu, 3/5/09, Fred Cisin <cisin at xenosoft.com> wrote: From: Fred Cisin <cisin at xenosoft.com> Subject: RE: is it possible to rebuild old c64 hardware enhancements? To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Date: Thursday, March 5, 2009, 8:37 PM On Thu, 5 Mar 2009, Dan Gahlinger wrote: > you're wrong. there is true abandonware. WRONG. > if a company dies and no one picks up the parts, the copyrights (owned by the company) lapse. > and when you work for a company, any code you write is typically owned by the company (you lose all rights to it). > "typically". And the company is legally, a "sole proprietorship", a "opartnership", or a corporation. > you could say theres a provision of 25 years, but when the entity ceases > to exist, and no holders remain, this is not the case. Did you kill ALL of them? > unless the author had special provisions in their contract or worked > something out before the company died, or someone picked it up, it's > free game. WRONG The assets of the company may revert to its creditors, and the creditors might not WANT IP assets, and give them up, but never "free game" > maybe it doesn't happen a lot, but there were literally HUNDREDS of > companies that disappeared without a trace, registered only to a PO box, > and not to a person. "Without a trace", meaning that YOU don't know where to find them, is NOT legally the same as "non-existent". Your best possibility might be ot DECLARE yourself to be a creditor.? THEN "not being findable" could be legally converted into default, permitting you to acquire assets. > I will gladly "make available" code by a c64 software company called > "MMI" (Magnetic Manipulations Inc.) if anyone wants it... go ahead, sue > me... Did you kill ALL of them? I'm not affiliated with Magnetic Manipulations, Inc. Whoever currently owns the assets might not CARE, but that is NOT the same as not owning. The closest in USA law to your fantasy of "abandonware" would be if the "rightful owner" (legal term) can be coerced or cajoled into explicitly signing rights into public domain, OR sufficiently after the end of lifetime of the owner. Why are you so intent on STEALING from anybody that you can't easily find?

17 years, 5 months

1
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VAX 11/780 on eBay

by derschjo＠msu.edu

Item 150330289821.? A bit expensive for my tastes.? Makes me wish I was independently wealthy and also had the space/power requirements for such a beast :).

17 years, 5 months

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offlist - RE: is it possible to rebuild old c64 hardware enhancements?

by chrism3667＠yahoo.com

ok, I'm interested. Incidentally what does the code do LOL. --- On Thu, 3/5/09, Dan Gahlinger <dgahling at hotmail.com> wrote: From: Dan Gahlinger <dgahling at hotmail.com> Subject: RE: is it possible to rebuild old c64 hardware enhancements? To: cctalk at classiccmp.org Date: Thursday, March 5, 2009, 8:19 PM you're wrong. there is true abandonware. if a company dies and no one picks up the parts, the copyrights (owned by the company) lapse. and when you work for a company, any code you write is typically owned by the company (you lose all rights to it). "typically". you could say theres a provision of 25 years, but when the entity ceases to exist, and no holders remain, this is not the case. unless the author had special provisions in their contract or worked something out before the company died, or someone picked it up, it's free game. maybe it doesn't happen a lot, but there were literally HUNDREDS of companies that disappeared without a trace, registered only to a PO box, and not to a person. I will gladly "make available" code by a c64 software company called "MMI" (Magnetic Manipulations Inc.) if anyone wants it... go ahead, sue me... Dan. > Date: Thu, 5 Mar 2009 16:48:21 -0800 > From: cisin at xenosoft.com > To: cctalk at classiccmp.org > Subject: Re: is it possible to rebuild old c64 hardware enhancements? > > On Thu, 5 Mar 2009, Dan Gahlinger wrote: > > I doubt anyone owns the copyrights now, > > Unless you killed them, > AND waited out the statute of limitations plus a bunch more time, > it doesn't work that way. > > We've told you before. > > > _________________________________________________________________ Share photos with friends on Windows Live Messenger http://go.microsoft.com/?linkid=9650734

17 years, 5 months

1
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1" paper tape buy ?

by dm561＠torfree.net

-------------Original Message: Date: Wed, 04 Mar 2009 17:47:06 -0800 From: "Chuck Guzis" <cclist at sydex.com> Subject: Re: 1" paper tape buy ? On 4 Mar 2009 at 19:32, Roy J. Tellason wrote: > > I haven't been following this thread very closely, but I trust > > someone has mentioned the 96 column System/3 mini-card: > > > > http://homepages.cwi.nl/~dik/english/codes/96col.html > > > > Holds more characters, but less data than a standard 80 column card. > > That was the one roughly the size of a 3.5" floppy, wasn't it? I worked at a > place once that used those... Yep, about that size. What made no sense to me is that each column is BA8421 - 6 bits. This long after IBM had settled on 8-bit EBCDIC. Most installations had standardized on the 80 column card, so it didn't make much of a splash unless you were a System/3 installation. Cheers, Chuck ---------------Reply: Well, it may not have been a big splash relatively speaking, but they were certainly used a fair bit by Burroughs, especially in the era of the B1700. And to get back to the original topic, I don't see any mention of edge- punched cards, sort of like fanfold paper tape but card stock, wider, and with prepunched feed holes; many readers and perfs could handle both PPT and EPCs. FWIW, the ones I have here are 3"x11". mike

17 years, 5 months

1
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Beautiful Digital Group Z80 system on eBay

by wmaddox＠pacbell.net

Any Digital Group fans here? It's being offered for a $2000 buy-it-now, item # 310126675985. No relation to the seller. --Bill

17 years, 5 months

5
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is it possible to rebuild old c64 hardware enhancements?

by dgahling＠hotmail.com

its just a disclaimer for the a/r... now that you mention it there is a usb type interface abd 1541 on flash usb (so to speak) ---------- Sent via Telus My Email 2.0 -----Original Message----- From: Zane H. Healy Sent: 3/5/2009 3:39:34 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: is it possible to rebuild old c64 hardware enhancements? At 9:36 AM -0500 3/5/09, Dan Gahlinger wrote: >I was thinking about things like the "super card" >and other drive/ copier enhancements that were made back in the day. > >I even had something from (super card I think) called "IHS Nibbler" >(Index Hole Sensor) nibbler. >which was a hardware/software copier mix, one part went inside the drive. > >I remember the "super card" had many different things, like a "ram >card" that went inside the 1541 drive. > >is it possible to recreate these things? (I dont have any hardware any more) > >I doubt anyone owns the copyrights now, or alternatively I bet a >"generic" hardware device could be made... You really like making claims about copyrights don't you? Even I am noticing a trend here, and I don't spend much time reading the list anymore. Or are you simply a Troll? Personally I'm more interested in new hardware that incorporates aspects of old hardware for my C-64, and have purchased three new items in the past year. So maybe this does answer your question, yes, it is possible to recreate some of these old upgrades, but I'm not of anyone making specifically what you're talking about as I've not had any reason to look for them. For all I know it's already built into the one device I have, or can be added to it. Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh at aracnet.com (primary) | OpenVMS Enthusiast | | MONK::HEALYZH (DECnet) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | PDP-10 Emulation and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |

17 years, 5 months

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Intersil Intercept Jr

by jeflittl＠cisco.com

To Whom it may Concern: What is all this stuff about the Intercept Jr? I was the designer of that little demo computer way back in the 1970s when I was working for Intersil. If anyone get's this message, are there some specific questions you might have? I still have several of the early proto units in my garage along with a lot of the original documentation. I see that someone is asking about getting replacements for the little micro-interpreter chip used in this design. Unfortunately it is not really possible to get new chips because the original was really a mask-programmed CMOS ROM that Intersil was using the Intercept Jr as a demo vehicle for (in addition to the 6100, the CMOS RAMs, and the support chips). There was also a larger version called the Intercept that I designed and we built first which was a full-blown PDP-8/E equivalent with 4K of 12-bit RAM, a full front panel, and a current-loop async serial interface that could be connected to an ASR-33 teletype and would run a full set of Digital diags and 4K-version software. After I left Intersil I believe they continued to develop additional peripherals for the Intercept and the Intercept Jr. including a memory extension controller based on the Digital version, a floppy disk controller, some special Intercept Jr. demo plug-in cards used in various educational settings such as the 6100 training courses that Intersil offered to their customers. I believe eventually the Intercept was capable of running OS/8. That required a 2-bank memory of 8K of 12-bit RAM as I recall. Regards, Jeff Little Menlo Park, Calif. PS: don't forget that the PDP-8 was basically organized around 12-bit words, not bytes.

17 years, 5 months

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Looking for a half height cab (DEC if possible)

by silvercreekvalley＠yahoo.com

Anyone in the UK got a half height cab (DEC would be great) for sale/trade. Will collect. Contact me off list if anything available. Cheers. Ian.

17 years, 5 months

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Eastbound hauling

by wdonzelli＠gmail.com

I will be on the West Coast (San Diego thru the Bay Area) in early May, driving with my trailer and van (I do this every year). In order to fund the trip, I offer moving services basically across the country, back to New York and points between. I can move rather large machines - two caccooned six foot racks can ride on my trailer, plus maybe a rack in the back of my van. I can also move terminals, drives, whatever. My trip westbound is pretty full from New York to Boulder, CO. There is a possibility of westbound movement from Boulder to California. Please contact me off list. Sooner is better than later. -- Will

17 years, 5 months

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1" paper tape buy ?

by csquared3＠tx.rr.com

> Date: Wed, 04 Mar 2009 00:41:07 -0800 > From: Brent Hilpert <hilpert at cs.ubc.ca> > CSquared wrote: >> >> On Mon, 2 Mar 2009 11:41:14 -0800 Rich Alderson <RichA at vulcan.com> said: >> >> >> From: CSquared >> >> Sent: Friday, February 27, 2009 2:53 PM >> >> >> I also seem to recall that Univac or some other computer manufacturer >> >> actually used a 90 (?) column card for even better packing density. >> >> I'll leave that improved calculation to someone who actually remembers >> >> how many columns those cards were blessed with. >> >> > Univac 90-column cards are Hollerith cards just like the "IBM" cards. >> > They consist of upper and lower groups of 45 columns of 6 round punches >> > (instead of the rectangular punches favoured by IBM). >> >> Interesting. I don't know how I remembered the 90 columns as I never >> worked with a Univac computer - only IBM's and various minis which mostly >> didn't even have punched card readers at all. I'm not real sure I've >> ever even seen one of the Univac punched cards. Your description >> of the hole grouping sounds like maybe they encoded characters as >> 6-bit codes vs. the "12-1 is an A", "12-2 is a B" scheme used by IBM. >> I'm not real sure that's even correct either - it's been a right good while. > > It doesn't present the full encoding but there is a picture and some more info here: > http://www.fourmilab.ch/documents/univac/cards.html > > The labelling on the card suggests the numeric digits were punched in biquinary > format. I'm going to guess that that goes back to the origins of that card type > when only numeric data where utilised, and that alpha & punctuation were added > later, using the remaining 6-bit binary patterns. I was just about to say I had never seen one of those, but then I seem to recall the Dallas-Ft. Worth turnpike also used Univac punched cards as tickets now that I think about it. That former turnpike has been a freeway (just another segment of I30) for quite a few years now. Perhaps that is the source of my hazy memories of those cards. If the coding is bi-quinary as the web site suggests, that brings back other unrelated memories of the adder in the IBM 1401. Of course I'm sure those show up in other machines as well, but that was my first encounter with them in about 1962 or so. That looks to be a very interesting web site for many reasons, though those cards were not what I visualized. I have another vague memory of a card with oval holes (longer in the vertical dimension) with the 90 holes all in 1 row rather than in 2 rows as the web site shows. Now I'm going to have to do a bit of searching to see if I can find something that matches that memory.

17 years, 5 months

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Emulex UC17 UNIBUS SCSI boards

by erikb＠digischool.nl

Hi folks, With all this talk about QBUS SCSI boards I thought I'd mention that I have three Emulex UC17 UNIBUS SCSI boards available waiting for the right deal. They came from a professional outfit and were tested (and found working) two weeks ago. These are simply awesome. Contact me off list for details, I won't bite. Greetings, Erik

17 years, 5 months

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Stardent - Kubota Pacfic - Tektronix

by mikelee＠tdh.com

Hi, I recently picked up in a lot of other stuff four DC600 tapes which is an interesting mix. I have no idea what systems they are for, maybe you do or have a need for such? Stardent 2.2 Diagnostics 1989-Part #125-0023-06 Kubota Pacific Computer 2.5 Diagnostics 1992-Part #125-0023-11 An unlabeled Tektronics tape, and another unlabeled 3M one. Mike

17 years, 5 months

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rsts/e 7.2 tape images?

by brad＠heeltoe.com

I see someone is selling physical 9-track backups of rsts/e v7.2 RL02's on ebay. that's cool. Does anyone have tape images of RSTS/E 7.2? I've seen 7.0 and 9+ but I'd like 7.2 for uda50 support. I've seen one on the web but it says the tape had read errors. -brad

17 years, 5 months

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Can I use a M9302 with a PDP 11/35?

by silvercreekvalley＠yahoo.com

Hi, Before I do it - I thought I should ask :) Can I use a M9302 as a UNIBUS terminator in a PDP 11/35 or 11/40. The manual mentions a M930 which I don't have, but I do have the M9302 which looks a bit more involved (has some ICs. The M9302 was from a 11/34 which is a later generation. Having said that, the 11/35 does work without the terminator - although I cant see a terminator on the system. Thanks Ian.

17 years, 5 months

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Cleaning Cases

by steve＠radiorobots.com

Hi, Any comments on use of peroxide to freshen cases? http://retr0bright.wikispaces.com/ I thought many cases were RIM and were something other than ABS as mentioned in link. Steve

17 years, 5 months

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S-100 power supply voltage ranges

by ajp166＠bellatlantic.net

Some S100 chassis had multiple primary taps, CVT or a in the case of Inetgrand {and a few others} boxes regulators. The problem is the early machines had to have really robust transformers as the +8V bus could easily be 25A using early boards. By 1980s with 64k ram cards (64k on one card) and multi serial IOs on one board a typical system might take from 3-5 board at far lower current than the earlier 4k ot 8k based memory systems. The side effect fo that was the bus voltages being upregulated would float higher and regulators would run really hot. Near the latter days typcail systems were system on a card (z80, 64k or even 128k, 2 serial, FDC and printer port) making the whole load typically under 3-4A at +8V and the need for more boards unlikely. Allison > >Subject: Re: S-100 power supply voltage ranges > From: "Barry Watzman" <Watzman at neo.rr.com> > Date: Mon, 02 Mar 2009 10:42:55 -0500 > To: <cctech at classiccmp.org> > >Actually, the factory fix was a "bucking transformer", a whole second power >transformer installed out of phase in series with the primary power >transformer so that the voltages were subtractive. There is a factory ECN >on this topic. But the bridge regulator solution was common among the user >base (I myself have used it) as a lot simpler and cheaper, and almost as >effective. > > >------------------------------ > >Message: 3 >Date: Sat, 28 Feb 2009 11:07:56 -0600 >From: Jim Battle <frustum at pacbell.net> >Subject: Re: S-100 power supply voltage ranges >To: General Discussion: On-Topic and Off-Topic Posts > <cctalk at classiccmp.org> >Message-ID: <49A96F6C.6060602 at pacbell.net> >Content-Type: text/plain; charset=ISO-8859-1; format=flowed > >Chuck Guzis wrote: >> All of the S100 boards I've seen use simple linear regulators, so you >> >> need some headroom--but not too much. A lot of S100 7805s and LM323- >> 5s were operated within an inch of their maximum current ratings (some >> had bypass resistors installed) and generated a lot of heat. I >> >> wouldn't run the supply rails any higher than I had to. >> >> Cheers, >> Chuck >> >> > >The Sol-20 had an app note about this problem. Apparently they shipped them >for a while with transformers that were out of spec with the end result that >the unregulated power ran high. The recommended fix was to take a power >bridge, mount it to the case, and wire it in series with the positive >voltage run in order to get a ~1.4V drop. > >

17 years, 5 months

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Xerox 8010 disks

by dgriffi＠cs.csubak.edu

Here's a list of the Xerox 8010 disks I have. I'm offering them first to the Computer History Museum by way of Al Kossow whereupon they should be imaged and made available to all. And now, the list. 8010 Xerox ViewPoint 1.1.2 BP Help Documents 1Q87 120K17651 VP Spreadsheet 1.1 2Q86 130K02312 8010 Xerox ViewPoint 1.1.2 Installer 4Q86 130K01773 8010 Xerox ViewPoint 1.1 VM Checker 4Q86 130K19480 8000 Series Rigid Disk Diagnostics (10, 29, and 42MB) 7.1 4Q85 130K01831 8010 Xerox ViewPoint 1.1.2 Local RS232C Communication Access 4Q86 130K24940 8010 Xerox ViewPoint 1.1.2 Local RS232C Communication Access 4Q86 130K24940 8010 VP NetCom 1.1.2 (Common Software) 1Q87 130K02033 VP Data-Driven Graphics (Bar, Pie, Line) 1.1 2Q86 130K02201 8010 Xerox ViewPoint 1.1.2 Remote System Administration 1Q87 130K02803 8010 Xerox ViewPoint 1.1.2 Remote System Administration 1Q87 130K02803 8010 Xerox ViewPoint 1.1.2 Remote System Administration 1Q87 130K02803 8010 Xerox ViewPoint 1.1.2 Remote System Administration 1Q87 130K02803 8010 Xerox ViewPoint 1.1.2 Remote System Administration 4Q86 130K02803 8010 Xerox ViewPoint 1.1.2 Remote System Administration 4Q86 130K02803 VP File Conversion of 860 Documents 1.1 2Q86 130K06912 8010 Xerox ViewPoint 1.1 (Essential Applications) 2Q86 130K01812 8010 Xerox ViewPoint 1.1 (Essential Applications) 2Q86 130K01812 8010 VP NetCom 1.1 Network Installation Scripts 2Q86 130K02042 VP List Manager 1.1 2Q86 130K02261 8010 Xerox ViewPoint 1.1 (File Check) 2Q86 130K01851 8010 Xerox ViewPoint 1.1 (File Check) 2Q86 130K01851 8010 Xerox ViewPoint 1.1.6 (Common Software) #4 of 5 1Q87 130K01804 8010 Xerox ViewPoint 1.1.6 (Common Software) #4 of 5 1Q87 130K01804 8010 Xerox ViewPoint 1.1 Basic Workstation #1 4Q86 130K01783 8010 Xerox ViewPoint 1.1 (Basic Workstation #2) #3 of 5 1Q87 130K01793 8010 Xerox ViewPoint 1.1 (Basic Workstation #1) #2 of 5 1Q87 130K01783 8010 Xerox ViewPoint 1.1 VP Object Conversion Utility 2Q86 130K01822 8010 Xerox ViewPoint 1.1 VP Object Conversion Utility 2Q86 130K01822 VP Document Editor 1.1.2 1Q87 130K02123 VP Document Editor 1.1.2 1Q87 130K02123 VP Training Exercises #1 2Q86 130K01842 VP Training Exercises #2 2Q86 130K17071 8010 Xerox ViewPoint 1.1 Basic Workstation #2 4Q86 130K01793 8010 Xerox ViewPoint 1.1 Basic Workstation #2 4Q86 130K01793 8010 Xerox ViewPoint 1.1 Basic Workstation #2 4Q86 130K01793 8010 Xerox ViewPoint 1.1 Basic Workstation #2 4Q86 130K01793 8010 Xerox ViewPoint 1.1 Basic Workstation #2 4Q86 130K01793 8010 Xerox ViewPoint 1.1 Basic Workstation #2 4Q86 130K01793 8010 Xerox ViewPoint 1.1 Basic Workstation #2 4Q86 130K01793 -- 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?

17 years, 5 months

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Recommendations for AIM-65 power supply?

by dm561＠torfree.net

-----------Original Message: Date: Fri, 27 Feb 2009 01:04:49 -0500 From: Ethan Dicks <ethan.dicks at gmail.com> Subject: Re: Recommendations for AIM-65 power supply? On Fri, Feb 27, 2009 at 12:49 AM, Josh Dersch <derschjo at mail.msu.edu> wrote: > Title basically says it all -- anyone have any recommendations for a decent > power supply for an AIM-65? ?I have it running right now on just 5V, but I > need something that puts out 24V so I can run the little printer, too :). > ?It'd be nice nice to something small enough to fit inside the enclosure > this thing came in but I'm not that picky. ?My searches on the 'net reveal a > lot of choices, so I'm looking for advice on what to look out for. > > For those playing along at home, the AIM-65 wants 5V at ~2A, and 24V at > ~2.5A. I don't know where to get one now, but my AIM came packaged with a steel bottom, a plastic top, and a PSU that has "AIM65" in the part number and that provides +24V. It looks like many other 1970s open-frame switchers with a large 1/8" or 3/16" aluminum baseplate and one or two power transistors, but unlike the others, it has more than just +5, and +/-12V. So at one point, someone was making 3"x4"x2" PSUs just for the AIM-65. Unless you happened to run across some that someone has as a stash of spares, I don't know where you'd find that exact model now, but it does exist. -ethan ---------------Reply: Well, I do have a 'stash' of about 6 or so but unfortunately (for you) I also have a stash of AIM-65s. As a matter of fact I'm looking at several right now to see just how many are worth saving; I might end up with one or two without working printers, in which case I might have a spare supply. I'll keep you in mind, but meanwhile it shouldn't be a big problem finding 24V somewhere; the required current is nowhere near what the 8" drives used. As Dwight suggests, it oughta be fairly simple to adapt the +/-12V on a PC PS. FWIW, there were at least two suppliers: initially Condor Inc. supplied one (part no. AA524-AIM65), and later Rockwell also supplied a fancier one made by Lestronics (Part no. A65-004-03). The Condor 24V supply looks like just a half-wave diode, cap and Zener. mike

17 years, 5 months

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S-100 power supply voltage ranges

by lynchaj＠yahoo.com

Hi! What are acceptable voltage supply ranges for an S-100 power supply? I am assuming 115VAC input. My intended application is a small home brew S-100 backplane. I have seen the S-100 voltage rails vary but I believe +15VDC, -15VDC, and +9VDC would be sufficient. Herb's S-100 page lists the voltages as +18VDC, -16VDC, and +8VDC but I have seen other voltages used. Thanks and have a nice day! Andrew Lynch

17 years, 5 months

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Interesting mix...

by geneb＠deltasoft.com

This gent scratch built a Z-80 based CP/M machine and then attached an INMOS transputer chip to it: http://www.yakyak.org/viewtopic.php?f=32&t=71349&start=0> &t=71349&start=0 g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind.

17 years, 5 months

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CueCat wanted!?!

by dm561＠torfree.net

--------------------------Original Message: Date: Tue, 3 Mar 2009 10:21:15 -0700 From: Star Master <starmaster at gmail.com> Subject: CueCat wanted!?! With the recent talk of CueCat's being used for BarCode scanners, I would love to get my hands on some of them. I had one about a year ago, and it worked awesome! Could scan about any type of BarCode...books, dvd's, cd's. And if you have a database program, such as DVD Profiler, it works great with it! Unfortunately my dear beloved granddaughter decided to 'play' with the CueCat and, sadly, it is no more.... So if anyone has one (or two or three!) either USB or PS2, I would gladly take it off their hands! Email me and we'll work something out! Thanks! --------------------------Reply: $5.95 too much for ya? http://www.weirdstuff.com/cgi-bin/category/POS000 Also often seen on eBay... mike

17 years, 5 months

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Recommendations for AIM-65 power supply?

by dm561＠torfree.net

------------Original Message: Date: Tue, 3 Mar 2009 08:13:37 -0800 From: dwight elvey <dkelvey at hotmail.com> Subject: RE: Recommendations for AIM-65 power supply? > On Sat, Feb 28, 2009 at 8:24 PM, M H Stein <dm561 at torfree.net> wrote: > > FWIW, there were at least two suppliers: initially Condor Inc. supplied one > > (part no. AA524-AIM65)... The Condor 24V supply looks > > like just a half-wave diode, cap and Zener. > Hi Not sure who posted this part. I doubt they are using a single zener to regulate 2.5A. Maybe a zener resistor and transistor but it would be a large zener for that type of current. Dwight -------------Reply: Guilty as charged; I can't trace the circuit or read the diode number, but on closer perusal it is probably a reverse voltage protection diode across the output, and the 24V is completely unregulated. And that same closer perusal reveals a few more diodes, so it looks like a full-wave rectified supply after all. My point was that it's a really basic linear supply; transformer, 4 diodes and a 2200/35 cap (and that diode and a bleeder resistor). Incidentally, these printers were also used in a small National printing calculator, in case you run across one somewhere. mike

17 years, 5 months

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Facit 4070 paper tape punch

by tsw-cc＠johana.com

A while ago, I obtained one of these, and have successfully hooked it up to the printer port on (one of) my Linux boxen. It works quite well, and I didn't need to change any software to get it functional. The adapter is housed in a small DB-25 to DB-25 patch box goodie (with the help of a 7400 gate). No problems here (if you desire details, please contact me off list). My problem is that I don't have a proper chad box for this nice punch. It is a clear plastic box that clips over the front of the punch and holds the chad. My temporary solution is to have a plastic bag with some cable ties to the "exit port". While this "works" it isn't ideal. So, I'm looking for a chad box for one of these. Any leads would be helpful. Thanks.

17 years, 5 months

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YouTube video to repair screen rot

by legalize＠xmission.com

This demonstrates a technique to repair screen rot on a vintage television set. <http://www.youtube.com/watch?v=5l1EoMmmOcQ> Nekochan.net's blog reports that he used the technique on an ADM-3A: <http://www.nekochan.net/weblog/archives/2008/10/adm-3a-screen-r.html> I hadn't seen this mentioned here before and screen rot problems have come up often in discussions of vintage terminals. He uses a heat gun to separate the layers instead of a nichrome wire as has been discussed here previously. I would feel much more comfortable with a heat gun than with a heated wire! -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

17 years, 5 months

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CueCat wanted!?!

by starmaster＠gmail.com

With the recent talk of CueCat's being used for BarCode scanners, I would love to get my hands on some of them. I had one about a year ago, and it worked awesome! Could scan about any type of BarCode...books, dvd's, cd's. And if you have a database program, such as DVD Profiler, it works great with it! Unfortunately my dear beloved granddaughter decided to 'play' with the CueCat and, sadly, it is no more.... So if anyone has one (or two or three!) either USB or PS2, I would gladly take it off their hands! Email me and we'll work something out! Thanks!

17 years, 5 months

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Anyone have this article from Creative Computing?

by RMeenaks＠olf.com

@article{Stineman, author = "Russell W. Stineman ", title = "A Consistently Well Behaved Method of Interpolation", journal = "Creative Computing", year = 1980, volume = 6, number = 7, pages = "54-57" }

17 years, 5 months

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Ibm 2970

by spedraja＠ono.com

Hi everybody. I am searching for photos or some information related with the IBM 2970. We used these devices in the beginning of the 70's but actually there is nothing available about them here. Could someone help me with this please ? I would agree it a lot Kind Regards Sergio

17 years, 5 months

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Recommendations for AIM-65 power supply?

by dm561＠torfree.net

-----------Original Message: Date: Fri, 27 Feb 2009 01:04:49 -0500 From: Ethan Dicks <ethan.dicks at gmail.com> Subject: Re: Recommendations for AIM-65 power supply? On Fri, Feb 27, 2009 at 12:49 AM, Josh Dersch <derschjo at mail.msu.edu> wrote: > Title basically says it all -- anyone have any recommendations for a decent > power supply for an AIM-65? ?I have it running right now on just 5V, but I > need something that puts out 24V so I can run the little printer, too :). > ?It'd be nice nice to something small enough to fit inside the enclosure > this thing came in but I'm not that picky. ?My searches on the 'net reveal a > lot of choices, so I'm looking for advice on what to look out for. > > For those playing along at home, the AIM-65 wants 5V at ~2A, and 24V at > ~2.5A. I don't know where to get one now, but my AIM came packaged with a steel bottom, a plastic top, and a PSU that has "AIM65" in the part number and that provides +24V. It looks like many other 1970s open-frame switchers with a large 1/8" or 3/16" aluminum baseplate and one or two power transistors, but unlike the others, it has more than just +5, and +/-12V. So at one point, someone was making 3"x4"x2" PSUs just for the AIM-65. Unless you happened to run across some that someone has as a stash of spares, I don't know where you'd find that exact model now, but it does exist. -ethan ---------------Reply: A lot of the old dot matrix printers had +5V and ~+24V supplies that would work with minor adjustments (also good for 8" floppy drives); they usually just end up being scrapped anyway. mike

17 years, 6 months

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Combined Retro Tech and Vintage Computer Fair

by gilcarrick＠gmail.com

The Arlington Museum of Information Technology (AMIT) is sponsoring the first annual Vintage Computer Fair Light - South to be held in conjunction with The 15th annual Antique Science & Retro-Tech Show And Swap Meet. The combined event will be held Saturday, March 14, 2009 at the Ramada Hotel, Irving, Texas, 4440 W. Airport Freeway. from 10:00 am to 4:00 pm. Admission is $5. AMIT Director Gil Carrick said that this combined event should attract many visitors who are interested in displaying their vintage computing artifacts or in buying, selling, swapping or just seeing these artifacts. Vintage Computer Fairs have been held in other parts of the country, but this will be the first one in the South. Since this is the first of these events in the region, it will not feature any speakers and will only last one day - hence the term "lite." Antique Science & Retro-Tech Show And Swap Meet organizer Skip Solberg said that for a decade and a half the event has been a favorite spot for fans of this antique gear to show, sell and swap their stuff. Visitors interested in displaying or selling should contact Skip Solberg at 817-467-0368 or email solberg2 at airmail.net for pricing and availability of table space. If you'd like more information about the Retro Tech Meet, or to talk with Skip Solberg, please call 817-467-0368, email solberg2 at airmail.net or see the web site at http://www.slideruleguy.com/tx-1q09.htm. If you'd like more information about the Vintage Computer Fair, or to talk with Gil Carrick, please call 817-994-9213, email amit at tx.rr.com or see the web site at http://amit-tx.org/. -- A. G. (Gil) Carrick, Director Arlington Museum of Information Technology 1012 Portofino Drive Arlington, TX 76012

17 years, 6 months

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Powering up a 20-year old MicroVAX II

by ard＠p850ug1.demon.co.uk

> The harness I have is not the same as either of the two that someone sent me > pictures of. It is not a ribbon cable, it has discrete wires, of different > lengths, its part number is 70-20450-01, rev C1 and there is a date of 9th > Dec 1985 on it. The actual connectors though look like the connectors on the > bad ribbon cable harness, I think they are MTA-156. AFAIK this is a side issue. While the older pawer harness can overheat _in use_, it will not cause the PSU to fail at switch-on. In other words, if you have the older harness, you should reuild/replace it, but this is not the cause of your problem/ > > Some have suggested it blew because I had insufficient load. I had a TK50 > and an RD53 attached, would that no be sufficient. Furthermore I did not As I said earlier, I'd not use thos 2 devices as dummy loads, they are simply too valuale for that. Get soem 6V and 12V car bulbs... While I beleive there are SMPSUs that fail if turned on with no/insufficient load, I've yet to meet one. I've seen supplies that trip repeatedly if given no load. I've seen supplies (including ones from DEC) where some of the outputs give far too _low_ a voltage if the main output is not suffiiently loaded. But not one that fails. > actually switch the PSU on, just connected it to the mains, would the load > connected to the PSU matter when the PSU is not actually switched on? Hang on Are you saying the rocker switch on the front was not turned on? In which case most of the PSU electronis was not powered. About the only thing that could have failed in the way you descrie are the mains input filter capacitors. Have you opened up the PSU case yet? Can you see anything obviously burnet or exploded? If so, what? > > There was also a suggestion that the PSU would have needed switching > separately for 50Hz operation as well. The hardware manual I have for the > machine tells me how to switch between 110 and 240, but does not say > anything about switching it for frequency, so I suspect this was not an > issue here. It isn;t. There is no frequency adjsutment on the BA23 PSU. > > >From the various responses I think it would be unwise for me to attempt a > repair. Is there anyone on this list who is in the UK who would be willing > and able to fix this PSU, or who knows someone who might be? Where are you in the UK? -tony

17 years, 6 months

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Zilog suicide

by dgriffi＠cs.csubak.edu

Since it seems like Zilog is intent on committing suicide by getting rid of its engineers, does anyone have any ideas on who will acquire the ruins when it's all over? -- 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?

17 years, 6 months

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seeking barcode scanner

by dgriffi＠cs.csubak.edu

I was wondering if anyone here has an unloved USB laser barcode scanner. -- David Griffith dgriffi at cs.csubak.edu

17 years, 6 months

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S-100 power supply voltage ranges

by Watzman＠neo.rr.com

8 volts and 16 volts is correct. Frankly, I would stay on LOW side (but not below 7.5 volts). MANY systems burn up boards because they are towards the high side (it was a huge issue for early SOL-20's). S-100 boards use linear regulators, and many of them pushed those WAY too hard, to the point that they got so hot they charred the board. Some notable candidates includes the Tarbell double density controller card, the IMSAI SIO2-2 card and a number of memory cards. At 9 volts, the linear regulator has to dissipate 4 volts x {whatever current}. A board like the Tarbell double density board has one regulator for the entire board, about 60 ICs including some big LSI chips (179x FDC & Intel 8257 DMA) and ONE linear regulator that gets ridiculously hot at even 8 volts. The difference between 8 volts and 9 volts is 25% and makes a HUGE difference. Barry Watzman ------------------------------ Message: 25 Date: Sat, 28 Feb 2009 10:03:10 -0500 From: "Andrew Lynch" <lynchaj at yahoo.com> Subject: S-100 power supply voltage ranges To: <cctalk at classiccmp.org> Message-ID: <6FB56B9FDD5B49A78CDD0BB4DD3B4BF5 at andrewdesktop> Content-Type: text/plain; charset="us-ascii" Hi! What are acceptable voltage supply ranges for an S-100 power supply? I am assuming 115VAC input. My intended application is a small home brew S-100 backplane. I have seen the S-100 voltage rails vary but I believe +15VDC, -15VDC, and +9VDC would be sufficient. Herb's S-100 page lists the voltages as +18VDC, -16VDC, and +8VDC but I have seen other voltages used. Thanks and have a nice day! Andrew Lynch

17 years, 6 months

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1" paper tape buy ?

by csquared3＠tx.rr.com

On Thu, 26 Feb 2009 14:18:59 -0700 Mike Loewen wrote: > On Thu, 26 Feb 2009, Gordon JC Pearce wrote: > >> Didn't someone once work out that to store a single MP3 you'd need a >> stack of 80-column cards ten miles high? > > Assuming a 6MB MP3 file and 40 bytes per card: > > 6 * 1048576 = 6291456 bytes > / 40 bytes per card = 157286.4 (157285) cards > * .178mm card thickness = 27996.73 mm high > / 25.4mm per inch = 1102.233465 inches > / 12 = 91.85278871 (91.85) feet > > > Mike Loewen mloewen at cpumagic.scol.pa.us > Old Technology http://sturgeon.css.psu.edu/~mloewen/Oldtech/ Umm if you store binary ... that is 80 bytes per card .. 46 feet per file. Now how many dec tapes is that? Errr, ISTR that a standard IBM, etc. punched card was 0.0065" thick rather than the 0.007" implied by the 0.178mm, BICBW. Also, since there are 12 rows per column, the most efficient packing technique could store 120 bytes in the up to 960 "bits" (hole positions) in the card. Using those numbers, I came up with the following: 6,291,456 bytes / 120 = 52,428.8 cards (OK, 52,429) 52,429 * 0.0065 = 340.7885 inches or about 28.4 feet per file. What an improvement. ;) (Is anyone else bored today?) I also seem to recall that Univac or some other computer manufacturer actually used a 90 (?) column card for even better packing density. I'll leave that improved calculation to someone who actually remembers how many columns those cards were blessed with. Later, Charlie Carothers -- My email address is csquared3 at tx dot rr dot com

17 years, 6 months

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compact pdp11 and front panel

by ajp166＠bellatlantic.net

Qbus -11s are poor candidates as they are hard to stall. That said you can display the dynamic address and data. This does meand latching the multiplexed address and data and providing led drivers for that. Also note as Chuck has said very little of the CPU state is brought to the bus so you cannot see 11/34 or 11/70 style info. To be able to write to memory or incrementially display a location is far harder as the CPU is continiously active and hard to stop and restart without some code. A switch flipping blinkin lights front pannel for an 11 is not simething I've missed and I"ve run 11/34s and 11/70s. In both those cases they were never used or needed. Allison > >Subject: Re: compact pdp11 and front panel > From: Dave McGuire <mcguire at neurotica.com> > Date: Mon, 02 Mar 2009 12:11:44 -0500 > To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> > Cc: cctalk at classiccmp.org > >On Mar 2, 2009, at 4:33 AM, David Griffith wrote: >> Does anyone know anything about shoehorning a front panel with lots >> of lights and switches onto a compact pdp11 (say, a /73 or /83)? > > I don't know anything about it specifically, but just from >thinking about it...I think the best you'd probably be able to do is >address and data LEDs, plus RUN, and maybe a few others...not much >more (i.e., no address spaces, processor states, etc) because the >signals aren't brought out to the pins on the J11 chip. > > But if that'd be enough, you could probably do it by using some >buffers to drive the LEDs, and doing DMA cycles onto the bus for the >switches. I'd probably take a whack at it if I had some time. > > -Dave > >-- >Dave McGuire >Port Charlotte, FL

17 years, 6 months

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compact pdp11 and front panel

by dgriffi＠cs.csubak.edu

Does anyone know anything about shoehorning a front panel with lots of lights and switches onto a compact pdp11 (say, a /73 or /83)? -- 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?

17 years, 6 months

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SGI 4D/220s

by legalize＠xmission.com

[Oops, hit send too quick] Just scored a couple SGI 4D/220s from a government auction site. Anyone have any familiarity with these? Anything I should look out for besides what's listed on various SGI web sites? (sgistuff, obsolyte, etc.) Crappy auction pics: <http://www.xmission.com/~legalize/vintage/images/4D-220-1.jpg> <http://www.xmission.com/~legalize/vintage/images/4D-220-2.jpg> -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

17 years, 6 months

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Emulex SCSI Controllers available...

by mcguire＠neurotica.com

On Thu, February 26, 2009 8:42 pm, Pete Turnbull wrote: >>> UC07's are QBUS cards which have a single SCSI port and support >> >> Uh, UC07s are UNIBUS, not QBUS. I've got a UC08, the dual-SCSI port >> version of that. > > No, they're definitely QBus, as is UC08. They're both quad-height > cards, at least the ones I've come across, but I believe there was a > later dual-height version with the same designation. I don't have one > but they're listed in lots of places and I know they work in microVaxen > as well as PDP-11s. UC17 and UC18 are Unibus, I believe. This is correct; the UC17/UC18 are Unibus. I've got a UC17 here. I've never seen a UC07, but docs say it is Qbus. -Dave -- Dave McGuire Port Charlotte, FL

17 years, 6 months

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cctalk Digest, Vol 67, Issue 1

by mtapley＠swri.edu

At 8:46 AM -0600 3/1/09, Dan wrote: >0x105 here, damn you guys make me feel old, I'm 41 >and grew up with the old systems and move to unix later too... 0x8A, 46 years old. Sigh. Wasted years....at least I understand the scoring. -- - 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.

17 years, 6 months

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FS: joystick

by charlesmorris800＠centurytel.net

I am pretty sure it's for an Apple II or Franklin clone. says "CH" as the manufacturer and has a DIP plug on the end of the cable. $8.00 shipped in the US. http://tinypic.com/view.php?pic=25ssvue&s=5 thanks Charles

17 years, 6 months

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Antikythera fans

by evan＠snarc.net

>>> Incorrect I can see, but how can you be "unethical" with a gearbox? Marchant contends (with a bunch of evidence, not speculation) that Price made some important technical decisions that were easy and emotional, rather than professional and scientific. Price's "Gears from the Greeks" is still the most * popular * article about the device, because for a very long time it was the only article. But a large amount of new research in the past few years uses much more advanced technical imaging and includes analysis of forgotten pieces of the device to which Price never had access -- pieces that severely change the device's story.

17 years, 6 months

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S-100 power supply voltage ranges

by Watzman＠neo.rr.com

Actually, the factory fix was a "bucking transformer", a whole second power transformer installed out of phase in series with the primary power transformer so that the voltages were subtractive. There is a factory ECN on this topic. But the bridge regulator solution was common among the user base (I myself have used it) as a lot simpler and cheaper, and almost as effective. ------------------------------ Message: 3 Date: Sat, 28 Feb 2009 11:07:56 -0600 From: Jim Battle <frustum at pacbell.net> Subject: Re: S-100 power supply voltage ranges To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> Message-ID: <49A96F6C.6060602 at pacbell.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Chuck Guzis wrote: > All of the S100 boards I've seen use simple linear regulators, so you > > need some headroom--but not too much. A lot of S100 7805s and LM323- > 5s were operated within an inch of their maximum current ratings (some > had bypass resistors installed) and generated a lot of heat. I > > wouldn't run the supply rails any higher than I had to. > > Cheers, > Chuck > > The Sol-20 had an app note about this problem. Apparently they shipped them for a while with transformers that were out of spec with the end result that the unregulated power ran high. The recommended fix was to take a power bridge, mount it to the case, and wire it in series with the positive voltage run in order to get a ~1.4V drop.

17 years, 6 months

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Dumping MCM6832 PROMs

by aek＠bitsavers.org

> Please mail me, if you are interested in the data i was reading from the ROMs. > It is in Binary format. Sorry to post this here, but email to the address you used appears to be bouncing. I'm interested.

17 years, 6 months

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S-100 power supply voltage ranges

by ajp166＠bellatlantic.net

> >Subject: S-100 power supply voltage ranges > From: "Andrew Lynch" <lynchaj at yahoo.com> > Date: Sat, 28 Feb 2009 10:03:10 -0500 > To: <cctalk at classiccmp.org> > >Hi! What are acceptable voltage supply ranges for an S-100 power supply? I >am assuming 115VAC input. My intended application is a small home brew >S-100 backplane. > >I have seen the S-100 voltage rails vary but I believe +15VDC, -15VDC, and >+9VDC would be sufficient. Herb's S-100 page lists the voltages as +18VDC, >-16VDC, and +8VDC but I have seen other voltages used. > >Thanks and have a nice day! > >Andrew Lynch The minimim voltages are +8, +15 and -15 or otherwise said at least 3V greater than the on card regulator. The maximum is generally +10, +18, -18v the caveat here is while most of the regulators used will accept up to 25-30V excessive voltages leads to overheating especially on the +8 buss where the highest current users are. Ideally well filterd voltages at the minimum on the +8V, +15V busses are desired and there were a few S100 boxes that did exactly that. Allison

17 years, 6 months

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8088 vs. 80c88

by les＠hildenbrandt.com

> > >> I am assuming the problem relates to following a lxi sp instruction >> immediatly with a call instruction, I can see how pipelining >> instructions could cause this failure. I cant immagine how calling >> the address which happens to match the sp would be an issue. > > >As far as we could determine, it was precisely the issue. >> My thought was that most cp/m programs either left the sp alone, and used >> the stack provided by cp/m, or set up a local stack early on in the >> program. In either case this bug could be completly avoided. Am I wrong >> here? Is the bug related to calling the address which happens to be in >> the sp? > > >Again, yes. I am sorry I am so slow here. Which is the problem? The value or the sequence? >Probably not a bug, but definitely a factor in determining if I >should have bothered to use the V20/30 for emulation at all. >Certainly, I wondered if the lack of Z80 instruction set support >would have been an issue. It was--and I supplied a software emulator >for that. Fortunately, I also included an software 8080 emulator, so >even users of JRT Pascal weren't left hanging. The Z80 thing is an interesting point. Before I started running CP/M on a V20, I allways ran on a 8085. I would get annoyed when cp/m software required a z80, because it was not a z80 operating system. I later did build a few z80 systems, a laptop and a 20mhz sbc system, but all of the coding I did for them was 8080, except for using the 16 bit io address features of the z80. >To clarify my point, would you try to run CP/M on a Rabbit uC with >all of its "we're just like a Z80 except when we're not" instruction >set? I've never tried, as the compatibility issues are just too >severe. I assumed the rabbit was a z180, you learn something new every day. I have done a few designes with z180's, but I cant even rememer what language tools I used at this point. Les --------------------------

17 years, 6 months

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Antikythera fans

by gstreet＠indy.net

Hi Vern and Randy, I'm also interested in the Antikythera project. I _think_ I ordered the book, "Decoding the Heavens," but I won't know until it actually arrives. Ordered it indirectly via Amazon.com, but my money was soon quickly and unceremoniously refunded. I think and hope I then found another copy via bookfinder.com. I recently received an email claiming that it has been sent. Making something like this must be pretty prohibitively expensive wouldn't it? Still, I am interested. Thanks, Robert Greenstreet Message: 1 Date: Sat, 28 Feb 2009 10:39:50 -0800 (PST) From: Vernon Wright <vern4wright at yahoo.com> Subject: Re: Antikythera fans To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Message-ID: <278829.9301.qm at web65503.mail.ac4.yahoo.com> Content-Type: text/plain; charset=us-ascii Hi Randy, I responded quite favorably to your proposal. I'm wondering whether you got any other people really interested in the Antikythera device, and whether you are going to go on with the project. It'll probably be a couple of months before my shop is workable again; moving and all that. But I am interested. Regards, Vern Wright --- On Sat, 2/21/09, Randy Dawson <rdawson16 at hotmail.com> wrote: > From: Randy Dawson <rdawson16 at hotmail.com> > Subject: Antikythera fans > To: "classic computers" <cctalk at classiccmp.org> > Date: Saturday, February 21, 2009, 7:30 PM > wondering if you guys love this as much as I do. > > I would like to make a user group/club for it if there is > enough interest > > For myself, I am fully equipped here with machine > capability and stage one is to make the model (2005) as > currently known. > > Stage 2 is heck make these in volume, its a marvelous thing > and may be profitable. > > You cannot find a better classic computer than this. > > Randy Dawson

17 years, 6 months

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N8VEM JUHA SD interface

by Volker.Pohlers＠gmx.net

Hello Mr. Lynch, I found your N8VEM project on web. I'm interested in JUHA SD interface for my own computer (http://homecomputer-ddr.de.vu/z9001/z9001_sdcard.htm) It is possible to get contact to Mr. Juha for some special questions? Sincerely yours, Volker (I send this email once again, now with header) -- Mit freundlichen 8 Bit Volker Pohlers homecomputer-ddr.de.vu - Z9001, Z1013, LC80, ... - Computer Bild Tarifsieger! GMX FreeDSL - Telefonanschluss + DSL f?r nur 17,95 ?/mtl.!* http://dsl.gmx.de/?ac=OM.AD.PD003K11308T4569a

17 years, 6 months

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UNIX for the VAXstation or AlphaStation

by slawmaster＠gmail.com

Hi all; I realize that this sorta overlaps with a previous thread or two, but I thought I'd start a new one rather than practice necromancy. So, I've got both a VAXstation 4000-60 and an AlphaStation 250 here and after playing with it for a bit I've decided I don't really care for VMS so much that I want it on both of them. I'd like to find an interesting, preferably AT&T-style UNIX to run on one of them, so I'm hoping some of you can help me figure out my options. So far, I know I can run: -NetBSD -Probably some DEC/HP UNIXes (Tru64 on the Alpha?). I'd really appreciate perspectives on these different systems, user/admin experience, etc. I'm not looking to accomplish anything in particular here, I just want something to play around with on my DEC hardware while I wait for the PDP-11 :) Thanks John Floren -- "I've tried programming Ruby on Rails, following TechCrunch in my RSS reader, and drinking absinthe. It doesn't work. I'm going back to C, Hunter S. Thompson, and cheap whiskey." -- Ted Dziuba

17 years, 6 months

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Heat Failures

by ohh＠panix.com

Hey, all: I'm hoping for some info about older micros and heat failure. We have an archaic system at work which is going stupid on us, and we're looking at repair-or-replace options. Let's say you have a system which is locking up due to heat problems. I suspect we've all seen that from time to time. We're talking failures where you can cool things down and reboot and the system comes back and works again, not failures where things are visibly melting and/or burning. :) Is there a "typical" mechanism by which heat causes a system to go south? If you get a system which is knocked out by heat, does it make it more prone to being knocked out by heat in the future? In other words, do heat failures make a system physically more susceptible to more such failures - is the damage cumulative? Any relevant info appreciated. Thanks! -O.-

17 years, 6 months

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Lame

by evan＠snarc.net

I saw the following ad on Yahoo's homepage just now: http://www.snarc.net/falsealarm.jpg But as you can guess by the file name that I gave to the screen capture, it turned out to be lame -- just an advertisement for Yahoo Mail. Oh well.

17 years, 6 months

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Whatever happened to MENTEC and the PDP-11?

by RodSmallwood＠mail.ediconsulting.co.uk

The last I heard of them was a takeover by Calyx. in 2006 I can't see any reference to PDP-11 on the Calyx Website. So what happened ? Rod (Renovates Old Dec)

17 years, 6 months

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1" paper tape buy ?

by aek＠bitsavers.org

Fanfold would be of more interest than rolls. You can still buy rolls. There hasn't been a source for fanfold in a while. Western Numerical Controls had some interest in brokering with the paper company for fanfold if the quantity was high enough.

17 years, 6 months

2
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Another classic-computer 'test'

by charlesmorris800＠centurytel.net

On Sun, 1 Mar 2009 18:56:56 -0600 (CST), you wrote: >This one did the rounds of a system I was on aout 20 years ago. Some of >the questions are certainly classic-cmputer related... > >Enjoy.. I scored 000115 octal. Don't feel like a "Sage" though :) -Charles

17 years, 6 months

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