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

by jhfinepw4z＠compsys.to

I have not subscribed since before the change to cctalk. Can someone please point me to the current procedure? I want to change to a different e-mail address. Sincerely yours, Jerome Fine -- If you attempted to send a reply and the original e-mail address has been discontinued due a high volume of junk e-mail, then the semi-permanent e-mail address can be obtained by replacing the four characters preceding the 'at' with the four digits of the current year.

23 years, 1 month

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HP nixie tube module information needed

by dwightk.elvey＠amd.com

>From: "Tom Uban" <uban(a)ubanproductions.com> > >Hello, > >Probably my best find at the recent Hamvention in Dayton OH was a >stack of nixie tube modules made by HP. In retrospect, I wish that >I had purchased the whole box of them, but I hopefully have enough >to at least make a clock. > >I have two variations on the modules, the part numbers are: > HP 05212-6016 series 648 > HP 05212-6003 series 415 >They both use Borroughs B422 nixie tubes and look like they may have >an integrated HV supply of some sort. Hi I don't see anything that I'd call a power supply. The transistors look like they might be flops/latches or buffers to drive the nixies. If you don't find some schematics, you could hand draw some. I doubt that it would be too hard to follow. Dwight > >Here are a couple of pics for reference: > >http://www.ubanproductions.com/Images/nixie1.jpg >http://www.ubanproductions.com/Images/nixie2.jpg > >I would appreciate if anyone can tell me what HP (or other) instruments >may have used these modules. I would also like to find a schematic of >the module if possible. > >Thanks! > >--tom

23 years, 1 month

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Well, it amused me...

by avickers＠solutionengineers.com

This morning, a BT man was around to fix my fried ADSL router (BT model 5861 - apparently they have a known weakness in the PSU department). The question is, was he impressed by my bank of 5 servers, all humming contentedly away under a table? Nope. How about the impressive dual-processor workstation, laptop docking port, or 8-way KVM which allows me to control it all? Nope. Maybe the monstrous Laserjet 5siMX, or the sleek laser fax machine? Nope. What really took his breath away, and had him talking in hushed tones, is the ICL OPD I now use as my primary telephone! This (almost) 20 year old bit of kit, which has THE best dialling system I've ever happened across (1, 2 or 3-digit alphanumeric short-codes), and a very dodgy speech synthesizer, reduced BT Man to remeniscences of the like I've not heard since I was in the pub last... He suggested that BT do offer an exchange device (as in a telephone exchange, not a swap...) which allows similar short-code type dialling. However, it costs "a hell of a lot of money"... On a completely different amusement level, I happened to watch the film Swordfish tonight (and what an outrageous film it was too...); which made mention of "the only PDP-10 connected to the internet" (paraphrased). Unfortunately, the PDP itself didn't make the silver screen, but a reel-to-reel tape drive did. So, any ClassicCmp'ers seen said film, and is it a genuine Digital reel-to-reel tape drive they use? Answers on the back of an electron... -- Cheers, Ade. Be where it's at, B-Racing! http://b-racing.com

23 years, 1 month

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HP nixie tube module information needed

by aek＠spies.com

I would appreciate if anyone can tell me what HP (or other) instruments may have used these modules. --- HP 5245L Frequency counters

23 years, 1 month

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8008 treasure trove

by jim＠jkearney.com

Thanks to the kindness of Mr. Robert Baer, I've just received a fantastic set of 8008-related documents. As I'm able I'll be scanning them and putting them on my 8008 web page http://www.jkearney.com/8008/. The catch includes: - Hal Singer's _Mark-8 (later Micro-8) Newsletter_, vol 1 #1 - vol 2 #6 (1974-1976). All kinds of modifications, programming and war stories about the Mark-8, and later covering the 8080-based computers such as the MITS Altair. - Hal Chamberlin's _The Computer Hobbyist_, #1 - #10 (1974-1976). An 8008 vector CRT display interface design, cassette interface, and an S-100 floppy controller were big topics in these. - The Microsystems International 8008 data book (they were Intel's Canadian second source, in addition to Siemens in Germany), containing not only the data sheet but a complete design and monitor listing for the MOD8 computer. - A number of MOD8 add-on designs from various individuals, including parallel I/O, audio cassette interface, and interfaces to the Suding scientific calculator board from Mini Micro Mart (remember them? There are a couple of their catalogs here too) - (this is not 8008-related, but too good not to mention) An original copy of Tom Pittman's Tiny BASIC Experimenter's Kit with the 6800 addendum (printed on typewriter paper on a teletype, no less). Unfortunately the IL code interpreter source is no longer with the package. Dr. Pittman has put this on the web, by the way: http://www.sbuniv.edu/~tpittman/IttyBitty/; the copies I have here appear to be identical. Jim

23 years, 1 month

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DSSI vs DSSI... connectors

by allain＠panix.com

Hi, For few years everything i picked up with DSSI interface used mini-idc frmale connectors, leaving me with the impression that that was the connector for all DSSI. Later I found some that used mini"centronics" female connectors, so I was wrong, there are (at least) two types of connectors. Question is, are they compatible, and, where does one find an adaptor between the two (or a part number for one)? TIA John A.

23 years, 1 month

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Intel iPDS, IBM 5110 FA

by rigdonj＠cfl.rr.com

Supposed to be working and complete with SW and manuals but located in Belgium :-( <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2730583978&category=1247> He also has an IBM 5110 <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=8101&item=3416132054> Joe

23 years, 1 month

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No space for vinatge computers in australia (fwd)

by Robert_Feldman＠jdedwards.com

You've obvoiusly never been in a <insert type here> museum's storeroom. -----Original Message----- From: TeoZ [mailto:teoz@neo.rr.com] Sent: Tuesday, May 20, 2003 10:20 AM To: cctalk(a)classiccmp.org Subject: Re: No space for vinatge computers in australia (fwd) <snip> For a museium to have many multiples of the same item is a waste of space (which costs money). <snip>

23 years, 1 month

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Oldest computer still in current use

by cheri-post＠web.de

Nice to know, that the possibility is given to connect my PDP11/23 to the internet via TCPware. It uses RSX-11M. Thanx alot for the information ! Pierre cctech(a)classiccmp.org schrieb am 16.05.03 17:18:30: > > >On Sun, 2003-05-11 at 15:29, Zane H. Healy wrote: > >> For the person asking about connecting a PDP-11 to the net: > >> There is TCPware for RSX-11M, RSX-11M+, MicroRSX, and I believe RT-11, > > > >If you have more information about the availability of TCPware for > >RT-11, I would be very interested. > > I've no idea, I know the RSX-11M+ version is still available. I assume if you contacted them they'd sell you a license. I also assume you're a hobbyist, and even if you're not, Alan Baldwin's probably offers more features. > > Zane > > > -- > -- > | Zane H. Healy | UNIX Systems Administrator | > | healyzh(a)aracnet.com (primary) | OpenVMS Enthusiast | > | | 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/ | ____________________________________________________________________________ Jetzt bei WEB.DE FreeMail anmelden = 1qm Regenwald schuetzen! Helfen Sie mit! Nutzen Sie den Serien-Testsieger. http://user.web.de/Regenwald

23 years, 1 month

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Help this guy?

by vcf＠siconic.com

Can someone help this guy? See below. Please send any help messages to <obertlnordin(a)worldnet.att.net>. ----- Original Message ----- From: Vintage Computer Festival <vcf(a)siconic.com> To: OBERT L. NORDIN <obertlnordin(a)worldnet.att.net> Sent: Thursday, May 15, 2003 18:24 Subject: Re: SOFTWARE > > Hi Obert. > > I just realized I never responded to this message. I apologize for that. > > On Tue, 4 Feb 2003, OBERT L. NORDIN wrote: > > > Do you have any information on the software WPS-PC by EXCEPTIONAL > > BUSINESS SOLUTIONS no longer in existence? I emulates Digital Equipment > > Company's WPS-8 Word Processing Software on personal computers. > > I'm sorry I don't. Do you need to convert some word processor files in > that format? > > > Also, do you have any information on CompuAdd Computer Company's 325TX > > Notebook? I'm trying to find the location of the notebook's C-MOS > > Battery. > > Again, I don't. Have you opened it up yet to search inside? ---------- Forwarded message ---------- Date: Fri, 16 May 2003 03:04:47 -0500 From: OBERT L. NORDIN <obertlnordin(a)worldnet.att.net> To: Vintage Computer Festival <vcf(a)siconic.com> Subject: Re: SOFTWARE Thank you for your response. Answers to your questions in regard to my inquiry are:- #1) Concerning WPS-PC I was trying to locate a source for that software. As I recall it could be better than DEC's (Digital Equipment Company, now Compaq/HP) "WPS-PLUS PC". #2) I have opened the CompuAdd 325TX and can't find anything looking like a C-MOS battery! -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

23 years, 1 month

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Leaving the hobby

by loedman1＠juno.com

R. D. Davis provided this good advice (from experience ?) >And, let's not forget to insist that the judge address you as "your >royal holiness of technology preservation." Refuse to address the >court without being bowed to. Insist that the judge, and everyone >else, who doesn't collect computers, waits for the royal wave from you >before they speak. Lastly, when asked any computer-related questions, >insist that you be allowed to consult your followers and members of >your extended royal family, the classiccmp group. If they attempt to >charge you with contempt of court, plead permanent insanity (remember, >insanity is a good thing). When they try to cart you away to the >funny farm, claim that you're not mentally unstable, just eccentric, >but not crazy like everyone else who doesn't preserve vast quantities >of computers. Swear on the Weeks and James book "Eccentrics," and a >stack of holy 7th Edition UNIX source code, that it's the truth. ;-) To which Rich (who never learned when to remain silent) replied This could work as long as I was careful not to quote any CP/M commands, " Yes your Honor, pip pip findbad movcpm. And furthermore, alias sub and era", one way ticket to 72 hours observation. Rich

23 years, 1 month

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Writing single density disks on a PC?

by dwightk.elvey＠amd.com

>From: "Fred Cisin (XenoSoft)" <cisin(a)xenosoft.com> > >Try Hypercross/PC-Xzap from Hypersoft. >I'd like to hear from anybody who has SUCCESSFULLY used 22DISK for Hi Fred I tried 22DISK for my M20 but it didn't work. The tables were wrong, as well as that my computer didn't deal with single density. Since it had no way of ignoring track 0, easily, I gave up on it. I found that the single density, on track zero, was solved by using the M20 to pre-format the disk and then used my routines to write the double density stuff to the remaining tracks. If Geoff has the same issue, he might be able to deal with the single density the same way. I found that the first track being single density was just a boot compatability issue. The first track would just have enough code to switch to double density and then the main loader was on track 1. This meant that the code was basically the same on all of the track zero's. I'd forgotten that the BIOS wouldn't deal with the single density. I was thinking more in terms of number and size of sectors. Dwight >anything other than CP/M, or used ANY commercial product for SD. >Yes, Catweasel or Option board THEORETICALLY could do it. >Posters about any product that "can do it", but don't differentiate >between "CAN DO" and HYPOTHETICAL POSSIBILITY can go F themseves. >(During the life of my products, I constantly competed with rumored, >but non-existent, capabilities of some products)

23 years, 1 month

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Preserving ancient media

by Paul.HILLS＠landisgyr.com

That's sort of what I was thinking of. Of course, as you say, it is ZX81 specific. Were these home computer tape format's standardised in any way, or at least based on an older standard? I seem to remember a format called "Cottis-Blandford" from years ago. Am I right in saying that most home computer's tape data format was 1200Hz and 2400Hz for logic 0 and 1 (maybe the other way round). How many stop/start & parity bits (and possibly more control bits) are sent may be computer-specific I guess. Sampling the audio stream and decoding the 0s and 1s would not be too hard a task if a sound card with easy access to the sampling hardware was available. It would then be relatively simple to write an application would allow the number of start, stop, data (probably 8!) and parity bits to be selected, world decode the string of 0s and 1s into a byte-file. The format of this file, again, would be computer-specific of course. If I get time I may have a go at this. paul -----Original Message----- From: David Holland [mailto:dholland@woh.rr.com] Sent: 17 May 2003 02:36 To: Classic Computer Talk Subject: RE: Preserving ancient media The following MIGHT be a good place to start: http://www.geocities.com/SiliconValley/Ridge/9965/ ZXTAPE 3.0 Its directed towards the zx81, but it could be applicable to your application. Dunno. I've a feeling every computers tape format is different, though. David On Tue, 2003-05-13 at 03:25, Hills, Paul wrote: > I have quite a bit of software on cassette tapes for 1980s home computers. > Does anyone know of a simple method (without having to design and build > myself a dual-tone decoder circuit + write suitable PC software) of getting > this information onto a PC? I guess the home computer emulator pages on the > web must have done this. > > Maybe I could record it as a WAV file then write a program to decode the > WAV? Or would MP3 encoding be capable of compressing and reliable expanding > the audio data (MP3 is of course designed to compress music which these > squeaks and whistles clearly are not, even if they lie within the audio > spectrum!). > > paul

23 years, 1 month

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PERQ 1

by purpletwilight3000＠yahoo.co.uk

Hi I recently acquired a Three Rivers Computer PERQ 1, together with PNX - a unix style OS. Unfortunately in the previous move the PERQ HD was not locked - so the HD needs reformatting. Does anyone have the formatter software (on 8" disk) for this machine - I understand it wasnt distributed with the OS. I have a PNX boot disk - but no POS so would need a bootable POS disk with the formatter on to get the system up and running. Any help appreciated. Thanks Ian.

23 years, 1 month

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Sage-II

by pete＠dunnington.u-net.com

On May 18, 23:55, Tony Duell wrote: > Do you have the complete p-System that was distributed for these machines > (with the Pasacal compiler and the 68000 assembler) or just the OS (and > filer?) that's needed to run ready-written software? I don't remember exactly what's on the disks, but essentialy the two dsks differ only in the VDU setup, and I suspect they're not a complete p-System with all the extras. Probably the editor and compiler, etc but not much more. It's probably possible to copy the non-system-specific parts from another system, though. -- Pete Peter Turnbull Network Manager University of York

23 years, 1 month

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Seeking Surplus Places, Portland area

by kyrrin＠bluefeathertech.com

Fellow listmembers, I'm making a run to Portland and vicinity later this week (Thursday, so I can at least see if the rumors about Tektronix's company store are true). I'm going to be looking for electronic surplus places to add to the listings on my web site, and I would appreciate input as to any I may have missed from this list: Da Lode Surplus Electronics, 8221 N. Denver R5-D3 Electronic Surplus, 9770 SE Stanley Ave. Wacky Willy's (both stores, NW Vaughn and Hillsboro). Tektronix Company Surplus (I already have directions). I'll also be doing some shopping of my own, but please bear in mind that my interests have swung hard away from computer hardware and back into the RF and test equipment realm. That's not to say I wouldn't like to find, say, Data I/O programming stuff, it's just not my primary focus when I'm shopping any more. So... Have I missed anyone? I came across a phone book entry for 'Norvac Electronics' that sounded vaguely familiar, but I figure Portland area folk will know best. Thanks much. -=-=-=-=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner & Head Hardware Heavy, Blue Feather Technologies -- http://www.bluefeathertech.com ARS KC7GR (Formerly WD6EOS) since 12-77 -- kyrrin(a)bluefeathertech.com "I'll get a life when someone demonstrates that it would be superior to what I have now..." (Taki Kogoma, aka Gym Z. Quirk)

23 years, 1 month

4
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Data transfer from Apple ][ to PC

by cb＠mythtech.net

>Meep! I can do all of that apart from the LocalTalk bridge and the >Workstation card, The localtalk bridge isn't needed if you are going to a mac that supports Localtalk directly Basically, anything after the 128 and before the iMac. The 128 doesn't have built in localtalk support IIRC, and the iMac and later don't have serial ports to the bridge is needed to connect to their Ethernet ports for Ethertalk. If you don't have a workstation card for the II, it will probably be cheaper/easier to get a Rom 3 IIgs and use the built in localtalk on that. -chris <http://www.mythtech.net>

23 years, 1 month

2
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Leaving the hobby

by pete＠dunnington.u-net.com

On May 18, 9:27, Merle K. Peirce wrote: > I was going over some old cables, and found a strange card in them. > > It is marked C.A.V.I. interface and has a sticker that reads Cavri Systems. > There is a 1980 date etched on the board, and under the sticker it looks > like it says BCD Associates. There are seven chips on board, 2 > DM7416N's a DM74LS14N, 2 Magnecraft W107DIP-5's, a Magnecraft W118DIP-5, > and a rockwell 6520-11. There are 6 outputs: Monitor V, Monitor A, Audio > Ch1 and 2, Player V and Computer V, and a nasty HRS rectangular locking plug. > I suspect it might be for an Apple II, but everything else was Wang or > System36, so it could be anything. Does anyone recognise this? Sounds like some kind of interface to connect a computer, a monitor, and a LaserVision player (or some similar device). Such systems were used for training systems using video clips and stills. I remember Jaguar using such a system in the mid-eighties; they shipped one to each Jaguar dealer in the UK, with training disks for the vehicle technicians -- but those were PC-based, with Pioneer LaserVision players and fancy Sony monitors. CAV probably means Constant Angular Velocity; which is what is used on LaserVision disks designed for random access, especially picking out individual frames. The Magnecraft devices are DIL reed relays, possibly for video switching. If it doesn't have much else on it, I'd guess it doen't do any genlocking. Sorry, no idea what computer it fits. -- Pete Peter Turnbull Network Manager University of York

23 years, 1 month

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New additions

by SUPRDAVE＠aol.com

Found a few things today which is surprising these days. Got a RS6000 model 250. It had the key in the switch which I understand is a good thing. Is this computer worth keeping? Got a CD labeled upgrading and repairing PCs 8th edition. Also has 6 and 4th editions on it as well as a mac upgrade section. Looks to be all .pdf files. found 3 full length ISA cards called EVERGREEN SYSTEMS CAPCARD 9500. Looks like a computer on one board with a Pentium overdrive in a socket 3. Any info on this?

23 years, 1 month

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A little OT:Interesting case for a PowerBook 5300...

by dwoyciesjes＠comcast.net

Yeah, this is kinda OT, but still interesting... http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=171&item=2729209921 -- --- Dave Woyciesjes --- ICQ# 905818

23 years, 1 month

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MEK

by pete＠dunnington.u-net.com

On May 18, 10:58, vance(a)neurotica.com wrote: > Isn't MEK a carcinogen? (Unlike HCl or Acetone...) Not that I know of. See, for example, http://ptcl.chem.ox.ac.uk/MSDS/BU/2-butanone.html Lots of other common (or once-common) solvents are, though. Compare 111-TCE, toluene, carbon tetrachloride, ... http://ptcl.chem.ox.ac.uk/MSDS/TR/1,1,1-trichloroethane.html http://physchem.ox.ac.uk/MSDS/TO/toluene.html http://ptcl.chem.ox.ac.uk/MSDS/CA/carbon_tetrachloride.html On May 18, 15:51, Jon Titus wrote: > To remove the residue from non-water-soluble adhesives left behind by > masking tape, labels, duct tape, electrical tape, etc., I've used xylene or > xylol with good results. Not a good choice. It used to be a constituent of thinners for cellulose paints, but now it's not allowed to be sold in normal hardware stores over here, for a variety of reasons (and most cellulose paints have been replaced by safer alternatives). http://physchem.ox.ac.uk/MSDS/XY/o-xylene.html Anyway, it's more drastic than you need. Turpentine substitute is slower, but works on much the same things, and won't harm plastics. -- Pete Peter Turnbull Network Manager University of York

23 years, 1 month

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Writing single density disks on a PC?

by dwightk.elvey＠amd.com

>To: cctalk(a)classiccmp.org > >Ok, I want ot generate some disks for my Model 4 on my PC, BUT some of the >disks I want to regenerate are mixed single and double density ... any >suggestions? > Hi Geoff If it is done a track at a time, you can deal with it by using the low level disk access functions of the BIOS. You do have to have a disk controller that supports single density ( not all do ). There are a few articles around that describe setting up the DMA ( needed for floppies ) and the disk controller, as another option. I've found this method to sometimes be machine dependent so if you can get by with the standard BIOS calls, that is a better way. If you can read Forth, I can send you some code I wrote to write tracks for my Olivetti M20 ( Z8000 machine ). I don't have a controller that does track 0 that is single density but you can get the idea of how to handle the controller and DMA. The other tracks are double density ( 360K drives ). You also need a compatible drive. You can't use a 1.2M drive to write single density at all and double density is not properly done so it will most likely fail to read reliably( a track width issue ). It may also be that your machine is supported by things like 22DISK. Have you tried this? Dwight

23 years, 1 month

2
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STAG Electronics Ganged Programmer

by dwightk.elvey＠amd.com

Hi When they change to newer models, they drop all support for the older ones. Even DataI/O supports some of the older ones for a while. But then, you pay for that support( a bit steep for hobiest but in reason for a company ). I have a Stag that I've always meant to play with but I've just been to lazy. I have other programmers that I can use. Dwight >From: Joe <rigdonj(a)cfl.rr.com> > > I have a Stag 39M100 with one plug-in for programming EPROMs and another >for programming embedded micro-processors. I found the docs for it on a >site in France. Stag is utterly worthless when it comes to support. I'll >never buy or recommend anything from them. Glen G has a bigger gang >programmer and I think he has a real manual for it. > > Joe > >At 07:29 PM 5/16/03 +0100, you wrote: >>At 09:50 15/05/2003 +0100, Witchy wrote: >> >>>Made by STAG in 1984, it's got a model number of PP16A and features a socket >>>for a cartridge containing the master EPROM and a module containing 16 EPROM >>>sockets for new EPROMS, so obviously you feed it a master and it makes up to >>>16 copies. >>> >>>Under the hood it's actually a 6809 based micro with 2K RAM and the board >>>has holes ready for 2 COMM sockets, so does anyone remember these beasts? >>>It'd be great if I could add on the serial ports and talk to it using a >>>PeeCee for making ROM backups >> >> >>I remember these being in use at Ferranti, when I was an apprentice there >>about 20 years ago .. (so age fits!) AFAICR we only ever used them in >>stand-alone mode as a bulk copier. They were also RENTED, from Livingston >>Hire, if I recall correctly, (certainly we used them a lot) so there may be >>a chance you can find some old docs from them. >> >>Rob

23 years, 1 month

1
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Oldest computer still in current use

by cheri-post＠web.de

Additional question: Can the PDP-11 be connected to the internet ? What about TCP/IP ? Pierre cctech(a)classiccmp.org schrieb am 10.05.03 21:41:39: > > Even better, how about the Digital PDP-11. > > > On Sat, 2003-05-10 at 14:14, UnRooster wrote: > > What about Commodore 64? > > > > http://dunkels.com/adam/tfe/index.html > > > > > > >1: What is the oldest computer or comptuer system still in normal > > >operational use > > > > > >2: What is the oldest that is connected to the internet > > > > > >3: What is the oldest connected to the internet AND hosting web pages > > >that can be visited (I know of an Atari that is acting as a web server, > > >don't remember the URL, but it shouldn't be tough to find... didn't know > > >if there was something older) > -- > Barry Skidmore | Hobbyist Systems: > skidmore(a)worldvenue.org | C64/128 > Red Hat Linux 8.0 | MicroVAX 3100-40, OpenVMS > Postfix 1.1.11 | Mac SE/30's > -- ____________________________________________________________________________ Fur 92 EUR mit Lufthansa quer durch Deutschland fliegen. Jetzt online den Fruhbucher-Tarif buchen unter http://img.web.de/lh/lhspecial2.html

23 years, 1 month

12
16
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VAX 6000 H405-E outputs

by kempfj2＠rpi.edu

Hey, I'm trying to diagnose and fix my VAX 6000, which seems to have rather nasty power-supply problems. Specifically, I need to know what voltages come out of the H405-E. I know about the 208VAC phase-to-phase from the circular plug on the back. I need to know what the other jacks output, specifically the mate-n-lock ones. I'd appreciate it if anyone could probe around a 6000 with a multimeter and get back to me. Cheers, Jesse Kempf Tender, Ye Olde Foo Bar, and Grill. Tamer of Unices and VAXen. Electrical Engineering Major Rensselaer Polytechnic Institute Microsoft programmers are the stormtroopers of the Lord of Entropy

23 years, 1 month

1
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Running PCs on 12v

by dwightk.elvey＠amd.com

>From: "John Allain" <allain(a)panix.com> > >Here's a pretty damn dumb question. > Can 5v regulators just be stacked up to get > more than 100mA? > One possibility is that the weakest one would > go first, then the rest after it's dead. > >John A. > Hi John There are ways to parallel these but most cause either loss of voltage regulation or current hogging. The the TO-220 packages are designed to handle 1 amp but for any of these, you need to consider heat sinking and total power drop. You may find that power drop will over load before current is reached. Most newer regulators are designed to both thermal and current shutdown safely. Like anything that is being stressed, running like this for a long time tends to shorten their life. Also, paralleling can cause oscillations. Especially if not all the regulators are running near their maximum levels. Proper bypassing is more critical when doing this. Dwight

23 years, 1 month

1
0
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Sage-II

by paul＠grumpy.co.uk

Hi guys, Anyone got one of these beasties? I picked it up last year or the year before, in one of those daft runaway auctions, obviously ending up paying way more than it was worth. Unfortunately there was no OS with it, so it's currently a small, oblong shaped doorstop. Can anyone help me? Cheers, Paul.

23 years, 1 month

5
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Removing duct tape residue.

by rigdonj＠cfl.rr.com

At 05:06 AM 1/29/03 -0600, Toth wrote: > >> For cleaning computer plastics, the absolute best product I've found (in >> the US) is Hoppe's No. 9 Powder Solvent. Found at your local sporting >> goods store. Even removes PERMANENT Sharpie. > >Has anyone tried removing Sharpie from a chassis with textured paint? I >have a couple of items that were marked up with a Sharpie, and short of >paint thinner (which seems to dilute and bury the ink in the paint while >damaging the texture), I've found nothing that seems to work. I've used alcohol on that stuff and it seems to remove some but not all of it. I've never found anything that would remove it completely. Joe

23 years, 1 month

13
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Can anyone tellme why a Name plate goes for over $135

by jrkeys＠concentric.net

This Apple II name plate sold for over $135 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2729182422

23 years, 1 month

3
2
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Data transfer from Apple ][ to PC

by cb＠mythtech.net

>I've got 2 IIgs' here, a ROM 00 one signed by the man himself and a ROM 03 >one. This means I only need a Shiva bridge....:) *hint to Mike Ford :o))* Do you not have access to a Mac built before the switch to USB? If you do, just use the serial localtalk port on it and skip using a bridge entirely, unless you have some reason that you need to go to Ethernet with the IIgs. -chris <http://www.mythtech.net>

23 years, 1 month

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Did you guys ever find a source for any TIL306's?

by wa7duy＠charter.net

Hello Joe. I ran across your message at http://www.classiccmp.org/pipermail/cctech/2003-January/007306.html about the TIL306. Did you or Toth ever find any TIL306's? I am also looking for some (8 of them to be exact) and like you and Toth have been able to find several TIL311's but no TIL306's. Thank you. Jim Pruitt http://www.classiccmp.org/pipermail/cctech/2003-January/007306.html and http://www.classiccmp.org/pipermail/cctech/2003-January/007252.html substitute for TI TIL306/307 Display? Joe cctech(a)classiccmp.org Mon Jan 6 01:37:30 2003 a.. Previous message: substitute for TI TIL306/307 Display? b.. Next message: Pinout for EECO Tape Reader? c.. Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] ----------------------------------------------------------------------------- --- At 01:18 AM 1/4/03 -0600, you wrote: > >I have the datasheet for the 311 in pdf format if you'd like me to email >it to you. The 311 has a built-in BCD decoder, but not a counter, like the >306/307. I need the counter function but I'd like a copy of the PDF anyway. > >> > I'll make a note to check a couple of my local surplus dealers over >> > the next few weeks. If I find any TIL306 displays, I'll pick them up. >> > Should I also hunt for any 307s? >> >> 306's or 307s will work equally well. The one difference between them is >> that one has the decimal point to the left of the digit and the other >> has the dp on the right. My unit doesn't use the decimal points so >> either display will work fine. > >Ok, thats what I wanted to be sure of. Often devices didn't use the >decimal points, but I didn't want to assume that was the case. > >> > If all else fails, would it be possible to salvage your displays? I've >> > carefully ground back ceramic and plastic on other dip components to >> > attach replacement leads in the past, but it isn't a fun task... >> >> It's possible but all the leads on them are weak and I'd probably have >> to eventually replace ALL the leads. > >Been there, done that. I have a pile of early 74244s and other 7400 series >logic chips that have nearly nothing left of their leads due to the foam >that were stored in for roughly 15-20 years. Same here. I squirreled away a lot of parts over the years but found that many of them were damaged due to the foam. Fortunately I've get some pretty good scrap sources and I've been finding lots of military grade cards with socketed ICs in the last couple of years so I've been picking them up and pulling the ICs and storing them in parts cabinets. I've amassed a huge stock in just the last year. I was also lucky last year and picked up a good number of parts cabinets that have all the drawers made out of anti-static material. I had been keeping the parts in anti-static foam for AS protestion but now I don't have to. .Thankfully, the TIL311s and >most of the other chips that came in the same batch of parts didn't have >the same problem, though their leads had to be cleaned. I have a fair number of 308 and 311 displays that I've pulled from cards and the local surplus place has plenty of them but the 306/307s seem to be scarce. Joe > >-Toth > ----------------------------------------------------------------------------- --- a.. Previous message: substitute for TI TIL306/307 Display? b.. Next message: Pinout for EECO Tape Reader? c.. Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

23 years, 1 month

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Removing duct tape residue.

by dwightk.elvey＠amd.com

>From: "Peter Turnbull" <pete(a)dunnington.u-net.com> > >On May 16, 15:28, Joe wrote: >> MEK has all but been banned in the US and is just about impossible >for an >> individual to obtain. Besides it EATS plastic! > >I believe it's still commonly used for certain industrial processes. > Yes, it does attack plastic -- that's it's principal use :-) Ditto >for actone. > >-- >Pete Peter Turnbull > Network Manager > University of York > Hi I used to use it to remove conformal(sp?) coating. It didn't dissolve it but softened it enough to be peeled off. It would have to soak for about ten minutes to even do that. Dwight

23 years, 1 month

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Duct-tape residue

by jontitus＠attbi.com

To remove the residue from non-water-soluble adhesives left behind by masking tape, labels, duct tape, electrical tape, etc., I've used xylene or xylol with good results. You can find this fluid sold under the brand names "Goof Off," or "Oops!" in the paint sections of hardware stores. (It removed latex-based paint drips or "slop" from trim, baseboards, floors, etc.) Some hardware stores may sell plain xylene, too. Use outdoors, and try it on any material before going all out. It will dissolve some plastics such as polystyrene. As a fallback, you can use denatured ethyl alcohol (ethanol). Rubbing alcohol (isopropyl alcohol, a.k.a. isopropanol) as sold in pharmacies contains a lot of water and it doesn't do a good job. Jon Jon Titus 36 Sunset Drive Milford, MA 01757-1362 USA Phone: +1-508-478-8040 E-mail: jontitus(a)attbi.com Member, National Association of Science Writers

23 years, 1 month

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Leaving the hobby

by charlesmorris＠direcway.com

> I am leaving the hobby/lifestyle of classic computing. There's a classic computing LIFESTYLE??? No one told me! How do I get one? > I will not participate in any discussion of the reason. OK, so we will just speculate wildly and discuss it without you ;) > The decision has been made. Sounds like someone decided for you. Best of luck, anyway. When I'm tired of my PDP-8, Sinclair ZX-81, VIC-20, Apple //e, etc. I just put them back in the closet for a while. -Charles

23 years, 1 month

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Mac Classic

by tferkle＠comcast.net

I have two, fully funtional, Mac Classic's that I want to sell. Anyone interested? thomas.m.ferkle(a)lmco.com

23 years, 1 month

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Preserving ancient media

by Paul.HILLS＠landisgyr.com

Answering my own question, (and if anyone else is interested), there is a utility here: http://www.alphalink.com.au/~edsa/#kcs that will make WAV files ine Kansas City Standard, or CUTS standard, from any input file, that can be recorded to a tape. It can also decode audio WAV files into data. Comes with documentation too, and looks pretty good. paul -----Original Message----- From: David Holland [mailto:dholland@woh.rr.com] Sent: 17 May 2003 02:36 To: Classic Computer Talk Subject: RE: Preserving ancient media The following MIGHT be a good place to start: http://www.geocities.com/SiliconValley/Ridge/9965/ ZXTAPE 3.0 Its directed towards the zx81, but it could be applicable to your application. Dunno. I've a feeling every computers tape format is different, though. David On Tue, 2003-05-13 at 03:25, Hills, Paul wrote: > I have quite a bit of software on cassette tapes for 1980s home computers. > Does anyone know of a simple method (without having to design and build > myself a dual-tone decoder circuit + write suitable PC software) of getting > this information onto a PC? I guess the home computer emulator pages on the > web must have done this. > > Maybe I could record it as a WAV file then write a program to decode the > WAV? Or would MP3 encoding be capable of compressing and reliable expanding > the audio data (MP3 is of course designed to compress music which these > squeaks and whistles clearly are not, even if they lie within the audio > spectrum!). > > paul

23 years, 1 month

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In search of Christopher Willis

by a.cranston＠selwaymoore.com

And you can reverse your vehicle up steep sand dunes too (see Ice Cold in Alex :-) -----Original Message----- From: Feldman, Robert [mailto:Robert_Feldman@jdedwards.com] Sent: 19 May 2003 15:08 To: cctalk(a)classiccmp.org Subject: RE: In search of Christopher Willis My '73 Toyota Land Cruiser Station Wagon had a starting crank. -----Original Message----- From: Tony Duell [mailto:ard@p850ug1.demon.co.uk] Sent: Saturday, May 17, 2003 6:01 PM To: cctalk(a)classiccmp.org Subject: Re: In search of Christopher Willis > The newest car that I've had that had a crank was a 1958 VW pickup, > although the U.S. models stopped in the early 50s. But the parts were I am pretty sure that UK Land Rovers had the starting handle at least until the late 1970s... The series 3 workshop manual shows the special dog bolt anyway. The starting handle makes some maintenance jobs (setting the valve clearances and the static ignition timing, for example) a lot easier too... -tony _____________________________________________________________________ This message has been checked for all known viruses by the Selway Moore Ltd (www.selwaymoore.com) scanning service, powered by MessageLabs. For further information visit http://www.messagelabs.com/stats.asp ________________________________________________________________________ ** Please note our new address for all correspondence and deliveries: ** Selway Moore House 169 Basingstoke Road Reading RG2 0DY Selway Moore Solutions t +44(0)118 903 7907 f +44(0)118 903 7908 Selway Moore Limited Recycle division sales t +44(0)118 903 7903 f +44(0)118 903 7904 Corporate and admin t +44(0)118 903 7900 f +44(0)118 903 7901 For our latest news http://www.selwaymoore.com/modules/news/index.cfm ________________________________________________________________________ This message has been checked for all known viruses by the Selway Moore scanning service powered by MessageLabs. For further information and statistics on current viruses visit http://www.messagelabs.com/stats.asp

23 years, 1 month

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MEK

by vance＠neurotica.com

I checked... I can't seem to find any government controls on MEK in the U.S. anywhere. And the MSDS reads essentially identically to the one for Acetone. Peace... Sridhar

23 years, 1 month

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MEK

by vance＠neurotica.com

I'm wrong. That was MEK-P. Methyl Ethyl Ketone Peroxide. Peace... Sridhar

23 years, 1 month

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MEK

by charlesmorris＠direcway.com

On Sun, 18 May 2003 02:22:02 -0500, you wrote: >MEK has all but been banned in the US and is just about impossible for an >individual to obtain. Besides it EATS plastic! > > Joe I bought a gallon can of it at Home Depot last fall. They also sell acetone, muriatic acid, and plenty of other "nasty" chemicals. -Charles

23 years, 1 month

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In search of Christopher Willis

by Robert_Feldman＠jdedwards.com

My '73 Toyota Land Cruiser Station Wagon had a starting crank. -----Original Message----- From: Tony Duell [mailto:ard@p850ug1.demon.co.uk] Sent: Saturday, May 17, 2003 6:01 PM To: cctalk(a)classiccmp.org Subject: Re: In search of Christopher Willis > The newest car that I've had that had a crank was a 1958 VW pickup, > although the U.S. models stopped in the early 50s. But the parts were I am pretty sure that UK Land Rovers had the starting handle at least until the late 1970s... The series 3 workshop manual shows the special dog bolt anyway. The starting handle makes some maintenance jobs (setting the valve clearances and the static ignition timing, for example) a lot easier too... -tony

23 years, 1 month

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anybody here have a HP 8752 or 8753 Network Analyzer?

by rigdonj＠cfl.rr.com

Just what the title says. Joe

23 years, 1 month

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Can anyone tellme why a Name plate goes for over $135

by cb＠mythtech.net

>This Apple II name plate sold for over $135 >http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2729182422 Didn't you read the auction... it sold for that high because it is "Super Rare". Now, if it was a name plate with the case still attached, that isn't so rare... but to find just the name place sans case in the wild... wow! I hope my sarcasm isn't too strong. I'd maybe do a better job of making it clear, but I'm a little busy with my pocket knife trying to pry the name plates off some of my Apple II gear! -chris <http://www.mythtech.net>

23 years, 1 month

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Leaving the hobby

by loedman1＠juno.com

On Sat, 17 May 2003 Rich wrote: >> my collection at over $10,000, including my Kaypro 10 at $2,500, a PS2 at >> $1,500 and a 9 pin Epson at $160. The current wife is an electrician To which Sellam added, >Don't you know you're only supposed to brag about what your collection is >worth to other geeks? And Rich responded, I know, but sometimes it is necessary to grossly inflate the value in order to be allowed to enter the house with the latest "find". Oh and the word she used was most definitely not "geek", but then again I suppose that I should not have called her the C word in open court, but the more chins than a Chinese phone book comment did make the judge laugh. Rich

23 years, 1 month

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Leaving the hobby

by cb＠mythtech.net

>I know, but sometimes it is necessary to grossly inflate the value in >order to be allowed to enter the house with the latest "find". Oh and the >word she used was most definitely not "geek", but then again I suppose >that I should not have called her the C word in open court, but the more >chins than a Chinese phone book comment did make the judge laugh. Lesson to be learned (besides being civil in court), always claim the most worthless item in the collection is the most valuable. That way she runs off with easily replaced junk and leaves all the real good stuff behind. -chris <http://www.mythtech.net>

23 years, 1 month

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Removing duct tape residue.

by pete＠dunnington.u-net.com

On May 17, 9:20, Chad Fernandez wrote: > I don't know if it's full strength or not..... what would it be thinned > with? I'll look too. I'm curiuos now. I need to go to Lowes any way > to buy a dust pan and broom for the basement. I wouldn't expect it would be "thinned" with anything. For use as a plastic cement, it's usually thickened by dissolving ABS or PVC in it. Pure MEK is a very light colourless liquid. -- Pete Peter Turnbull Network Manager University of York

23 years, 1 month

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Infotek Info RE: HP 9000 300 data acquisition card - Infotek AD200

by rigdonj＠cfl.rr.com

Peter, Did you ever find out anything about this card, other than the technical description that someone posted? I THOUGHT I might have a manual for it and I went looking for it today but didn't find it. (I'm still looking). However I did find an Infotek manual for a 2Mb memory board for the 9000 200s. It says that Infotek is a division of ALS Corporation and their address was 1400 N Baxter St, Anaheim, California. This manual is dated 1985 so they may or may not still be around but it might help in your search. I think there are several list members in that area, maybe you can get one of them to search locally. I have several Infotech devices including ROMs for the 9825, 9845, a memory card for the HP IPC and a couple of these 2Mb cards for the 9000 200 computers so I'd like to try and track them down too. One thing that prompted me to look for the manual is that I'm working with Bob Shannon on HP 1000s and he has a card for the 1000 that sounds like it's exactly the same thing in a different form factor. Even the specs look the same. We're trying to figure out how to program, trigger and read it and I'm guessing that that will be the same for both HP cards and your Infotek card. Joe > >Peter, > > What kind of terminal(s) does it have? It sounds like it might be a A/D or perhaps a D/A card. HP made some A/Ds I think I have some docs on it somewhere. I used to have one the cards I never got around doing anything with it. I never even pulled it out of the machine so I don't know if it was made by HP or if it was made by someone else. IIRC it had a row of screw terminal on the back side of it. I looked through the manual for the HP A/D card at one time and I don't think it took any special software. The system treated it somewhat like a GPIO card but the digital value that was input was converted from the analog input. If you output a digital value to the card it selected the channel number (12 channels as I recall) and range. If you think your card may be a A/D, I'll try to find the docs that I have. > > I forgot to ask, is this a DIO card? > > Joe > >At 09:47 PM 5/3/03 +0000, you wrote: >>Hi All, >> >>I've just acquired an HP 9000 series R332. In the back of it amongst the >>usual HPIB / GPIB cards there is a card marked Infotek Systems AD200 >>Converter, \ Assy 900-13992 rev E - I assume that this is some sort of data >>acquisition card. >> >>Does anyone have details of the card specification / the software required >>to drive it? >> >>Cheers >> >>Peter Brown >> >>_________________________________________________________________ >>It's fast, it's easy and it's free. Get MSN Messenger today! >>http://www.msn.co.uk/messenger

23 years, 1 month

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Sage-II

by pete＠dunnington.u-net.com

On May 18, 22:51, Tony Duell wrote: > I have the same problem. I also have a Sage II but no OS. I think it can > run the UCSD P-system or CP/M-68K, but I've not found either for it yet. As I said earlier, I have UCSD p-System disks. I just realised I also have Teledisk images of CP/M-68K for it, which I think Don Maslin sent me the last time this came up on the list. -- Pete Peter Turnbull Network Manager University of York

23 years, 1 month

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Leaving the hobby

by loedman1＠juno.com

"R. D. Davis" <rdd(a)rddavis.org> observed, >Incorrect response to such a wife: "Yes dear." [wimpily spoken] >Correct response to such a wife: "You're right, we're not taking it >with us, I'm taking it with me. Either you're coming with me, or you >aren't. Make up your mind." [spoken very matter of factly and calmly, >then just let any arguments, shouting, screeching, etc. go in one ear >and out the other] My first wife called this bluff and left, leaving me with the son and all the bills. She filed property settlement papers that placed the value of my collection at over $10,000, including my Kaypro 10 at $2,500, a PS2 at $1,500 and a 9 pin Epson at $160. The current wife is an electrician with a case of "Pack rat syndrome" equal to mine. The only classic related disagreements we have are over whose turn it is to use the ancient ones and how nice it would be to get 1/2 of the spare room for her stuff, I tell her that she can have the bottom 1/2. Rich

23 years, 1 month

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Running PCs on 12v

by rcini＠optonline.net

Joe: >> >> Any chance of using 48VDC? There's plenty of surplus industrial PCs (and >>PSUs) that run off of that. I've often wondered if you couldn't run a PC >>directly off of 12VDC (with a regulator to drop one line to 5VDC). I saw a lot of these in my usual surplus catalogs but producing 48v from batteries of a sufficient amperage is a bulky proposition. I envision a small cordura camera bag filled with two surplus 12v 7ah lead acid batteries (in parallel) and some switching gear for the scope and the PC. I also looked at some of the mobile MP3 projects but the most suitable solution was $150 and didn't have the right amperage ratings. I don't know...maybe I'm looking for something that really doesn't exist. I really wanted to avoid building my own supply, though. Rich Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/

23 years, 1 month

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