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

IMSAI Score update/Spare BYTEs/Got an Altair too

by Watzman＠neo.rr.com

RE: > OK, I pulled the front panel appart tonight and I found out that whoever > owned this model colored the silkscreen with magic marker. Bogus! Todd Fischer sells new film masks. www.imsai.net, I believe.

21 years, 3 months

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Metric buttload of OS rants... again...

by ajp166＠bellatlantic.net

> >Subject: Metric buttload of OS rants... again... > From: Roger Merchberger <zmerch at 30below.com> > Date: Sat, 04 Jun 2005 09:26:15 -0400 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >Rumor has it that Vintage Computer Festival may have mentioned these words: >>On Fri, 3 Jun 2005, Randy McLaughlin wrote: >> >> > Yes windows today is completely equivalent to the different OS's I've used >> > on a variety of systems since I started in the mid 70's. The fact that >> > Micro$loth has created a bloated giant that self destructs with time is a >> > side issue. The open source equivalent Linux is also a bloated giant. >> >>Except that it rarely (if ever) self destructs with time. > >And it doesn't *have* to be a bloated giant; only the prepackaged versions >are. If you want your own, whip out LFS and recompile it *any way you >like.* Yes, there are still versions that can fit on a pair of floppies -- >no HD required! > >>BIG difference. > >Yup. > >=-=-=-=-=-=-= > >Speaking of whiny people whining about Closed-Source OSs and whining those >whiny computers/OSs won't open whiny PDFs... > >Who has a version of MicroWare's OS-9 68K that'll run on an Atari ST? > >;-) > >Laterz, >"Merch" > >-- >Roger "Merch" Merchberger -- SysAdmin, Iceberg Computers >zmerch at 30below.com The only thing I like about the linux/unix tree is that we can hang Billy G from it. I'm not a unix sort myself but, having used linux (also Ultrix, Freebsd and Openbsd) I can say it's solid, compact and latest distributions are fairly complete. It's biggest feature is it's totally configurable. It's clearly one of the few OSs out there for PCs that if you don't like a feature or it's size changing it is not only possible, there's a good chance someones done it for you. The down side is the world is so totally PC/wintel centric that you end up running msWord and Excel virii and all no matter what. You know it's a curse when you apply to a linix shop and they want a MSword Resume.. ;-p Allison

21 years, 3 months

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Question about PDF manipulation

by dwight.elvey＠amd.com

>From: "Jules Richardson" <julesrichardsonuk at yahoo.co.uk> > >On Thu, 2005-06-02 at 23:15 -0700, Eric Smith wrote: >> Does any TIFF file of the nature you describe actually exist? PDFs >> with both bitmaps and text are not uncommon. > >I'm not sure I've seen one, and I've dealt with a *lot* of TIFF files >over the years. > >Other metadata such as the app that created the image etc. is quite >common though, and I have a feeling that Photoshop puts in all sorts of >extra tags (I haven't got a copy here with which to check) > >Whether any such tags are useful to preserve is another matter. >Personally I like the accountability; I'd like to know who scanned a >document, when they scanned it, what software they used to do the scan. >Mainly because it may help at some future OCR stage in identifying ways >of improving the process or runs of documents that are likely to cause >trouble during the OCR phase. Plus of course it's nice to know who was >responsible for the hard work! > >cheers > >Jules Hi The biggest problem I think TIFF has is that it is really just a container and not truly a image format. From what I know, one can put just about any data stream into a TIFF. It need not be an image. When I said that I thought that a TIFF format was better for archiving I intended it to mean an non-compress scanned image thet is in a form that has little encoding. The TIFF allows all kinds of other things. I'm not saying they should be used. I astro imaging, one often uses TIFF's to contain several different color images to be processed later. Dwight

21 years, 3 months

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Screw Drivers and PDF Files

by pete＠dunnington.u-net.com

On Jun 3 2005, 19:49, Jim Leonard wrote: > Pete Turnbull wrote: > > What about a PDF that I need to use some distance from > > my computer, but is not printable? > > In what situation would a PDF not be printable? I don't get your point. When the creator locked it so that the standard Adobe reader can't print it. I've come across two or three that are protected in this way. -- Pete Peter Turnbull Network Manager University of York

21 years, 3 months

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WTB:Vesta Tech/Radio-Electronics 80188 robot brain

by chrism3667＠yahoo.com

or at least the firmware. Vesta e-mailed me the Forth interpreter rom image, but thats all I have. I have the article and the artwork otherwise. __________________________________ Discover Yahoo! Use Yahoo! to plan a weekend, have fun online and more. Check it out! http://discover.yahoo.com/

21 years, 3 months

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Screw Drivers and PDF Files

by pete＠dunnington.u-net.com

On Jun 3 2005, 14:28, der Mouse wrote: > >> Which of those "several open source packages" includes a scriptable > >> (ie, command-line) tool to extract the embedded images from a PDF? > > If you have a "need" for extracting images from PDF than you are > > missing the point of PDF. If you can view it and print it you have > > no need to extract images from it. > > That's a nice-sounding theory, but it is wrong. And incomplete. What about a PDF that I need to use some distance from my computer, but is not printable? What about the case where a PDF contains more than one document that you want to store and index separately? What about a badly-scanned document that needs some fixing? > You do not know better than I what I have need to do with PDFs. Agreed :-) It's all very easy to say it should have been created properly in the first place. Life's not like that; things are not perfect. -- Pete Peter Turnbull Network Manager University of York

21 years, 3 months

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IMSAI Score update/Spare BYTEs/Got an Altair too

by dwight.elvey＠AMD.com

>From: "Dave Dunfield" <dave04a at dunfield.com> > ---snip--- > >The "IMSAI 8080" does not light up and should appear clearly visible in white. >Sounds like the logo was removed for some reason ... hopefully it was covered >with a bit of black paper and not "backed out with a marker". > > Hi My IMSAI came with as piece of black paper over the logo. I was told that it was used for early development work. This is consistent with the fact that it had one of the early Digital Systems floppy controllers that transferred by DMA. The only problem I have is that the serial number is missing :( Dwight

21 years, 3 months

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Question about PDF manipulation

by Watzman＠neo.rr.com

Some of the attitudes here about PDF impress me as about the most ludditical (is there such a word?) as I've seen in a long time. Suppose you have a CompuPro memory card and no manual. The card is useless. I give you the PDF file of the manual. You can look at the manual on-screen, or you can print it and you HAVE the hard copy manual. In color, where the original was in color, and with quality that may be indistinguishable from (or in some cases actually better than) the original manual when it was new. Is that a benefit? Is it better than no manual at all? Is it, essentially, as good as being able to call CompuPro (which no longer exists) and order a new manual, FOR FREE, and have it delivered INSTANTLY? So what if it's not "searchable". Get a clue: THE ORIGINAL PAPER MANUAL WAS NOT "SEARCHABLE". But if you or anyone else wants it to be searchable they are certain welcome to OCR the document, a capability which Acrobat supports. (Note that if it was EITHER made from it's source document (e.g. Word or whatever) OR if it was "OCR'd" (which Acrobat itself can do), it WILL be searchable. The people who don't like PDFs either have not used Acrobat extensively or don't understand the real nature of the prouduct. Acrobat allows you to create an electronic document that can have as many features (or as few) as the creator wants: -Page images -Searchable, exportable, "copyable" text -Fonts and graphics -Printable -Fully "rearrangeable" (re-sequence, add, delete, replace pages) -Table of Contents (as hyperlink) -Index -Movies, photos, sound and other multimedia objects -Security control, passwords determining who can do what And it and the documents it creates are multi-platform: PC, Apple, Linux, Sun, IBM mainframe .... virtually every computer platform in existence. It's one of the best and most wonderful tools that the PC world has ever created. Sorry if it's proprietary, but sometimes quality tools are only created by people who want to be paid for their work.

21 years, 3 months

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Question about PDF manipulation

by dwight.elvey＠amd.com

>From: "Jim Leonard" <trixter at oldskool.org> > >Dwight K. Elvey wrote: >> The biggest problem I think TIFF has is that it is really just >> a container and not truly a image format. From what I know, >> one can put just about any data stream into a TIFF. It >> need not be an image. > >EVERY "image format" is a container. Hi True but what I meant by that was that it might be a stream of single dimensional data from a spectrograph or 3 dimensional data form a seismograph. Not necessarily a picture in the normal sense of what a jpg is but still an image. Dwight > >What does it matter what the container is if it is well documented and supported? >-- >Jim Leonard (trixter at oldskool.org) http://www.oldskool.org/ >Want to help an ambitious games project? http://www.mobygames.com/ >Or check out some trippy MindCandy at http://www.mindcandydvd.com/ >

21 years, 3 months

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Question about PDF manipulation

by msokolov＠ivan.Harhan.ORG

Jim Leonard <trixter at oldskool.org> wrote: > What is your proof that the PDF was created from PS? The Producer comment in the PDF. > Was the PS hand-edited by a person, or generated by a program? Doesn't matter. > If the latter, I doubt the original PS will have "more" than the PDF. It doesn't matter whether it has "more" or not. I just *want* the original PS. > Most PDFs I've created from PS source had that PS source generated by some > other program. PS was just the intermediate transport. Doesn't matter to me. Whether you wrote the PS by hand or generated it >from another source, you have the PS. I want it. But you don't give it to me and instead apply an irreversible transformation to it. Anyway, I'm done with this thread. MS

21 years, 3 months

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Simulated disk drive for RT-11?

by ajp166＠bellatlantic.net

> >Subject: Re: Simulated disk drive for RT-11? > From: Ethan Dicks <ethan.dicks at gmail.com> > Date: Fri, 03 Jun 2005 12:39:28 -0500 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On 6/3/05, David Betz <dbetz at xlisper.mv.com> wrote: >> Does the TU-58 use a standard RS-232 serial interface? > >Yes. The TU58 drive is strappable, but 38Kbps is a standard speed. > >> Is the protocol defined somewhere? > >Yes... I know it's written up in several DEC manuals, some of which >are probably on bitsavers. The basic protocol is called "Radial >Serial Protocol" (RSP), but, I think, for newer implementations, like >in the firmware of a VAX-11/750, there are some variations that, while >documented, aren't as easy to find as the base documentation. RSP and MRSP are stock firmware. But as you said it's poorly documented even in the EK-OTU58-TM-002 tech manual I have. >It's ordinary to hook a real TU58 on a port of a DLJ11J... one can >even use a straight-through 10-pin Berg cable - it's the same pinout >(one of DEC's standards). It's also possible to emulate a TU58 on a >modern PC, or to hook up a real TU58 to a modern machine to read >tapes. > >I don't have my tools with me, but googling for TU58 and emulator will >probably cough up something interesting. > >Media size is a bit of a problem - a real TU58 is kinda small, even >compared to an 8" floppy. Speed isn't great - at least an emulated >drive doesn't have seek delays, but transfer speed becomes the >bottleneck. At 256k per drive it's essentally an RX01 only slower. For RT11 thats a usable configuration. One trick to speed things up is if the CPU has enough ram (256k is enough and 1mb really works) is to run the RT11 VM: driver that's the virtual disk driver (ramdisk). Load it with a copy of everything then boot it then the tape/tu58 becomes seconday storage and you have more space. Makes using a TU58 much friendlier. The boot time for that is rather long. >OTOH, there are drivers for RT-11, and it _is_ a simple device to >emulate. If only it were a few megs in size, it would be adequate for >quite a few applications. There is a PC/DOS version that emulates a TU58 using the PC as a disk rather than tape. I think Bob at sparetime gizmos has the code but I could be wrong. Allison

21 years, 3 months

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Help collecting gear from west of Chicago

by drb＠msu.edu

> Wow you got a piece of a Teradyne test system! What a haul! > I programmed the L210 and the L300 models. This may be an older one. > Seems like you got the CPU and one of the peripherial cabinets. > You missed out one the bed-of-nails test bed wtih all the vacum hoses > and press down pull up etc mechanics. > The Peripherial cab had voltage supplys, current supplys, > digital multimeters, other test instruments, sig generators, etc. > All were programmed and read by the CPU via the cross matrix switch. > That bed-of-nails cabinet is larger than the old GSA iron desks from > the 40's. Probably weighed 2-3 k lbs by itself. Rich, Oh, nifty! I knew if I posted this, someone would recognize the non-PDP parts. I've never actually seen one of these systems in person, though I've known about them for years, and even met one or two guys who worked on them. I was wondering about the card in the Teradyne cage with all the driver transistors on it. The auction brochure (http://www.xlineassets.com/images/Xline%20Auction5_5_05.pdf) mentions a Teradyne Z1890VP ICT tester. I wonder if that's the part I didn't get? Thanks for speaking up. De

21 years, 3 months

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IMSAI Score update/Spare BYTEs/Got an Altair too

by Richard.Cini＠wachovia.com

I plan on trying to remove the marker from the back of the film with isoporpyl alcohol. My backup is that I can replace the film and I will store the old one in the packaging that the new one is sent in. The new film, although computer-generated, was derived from original photomask by Todd himself or by one of his team working with a local print shop. I'm pretty certain that it will be indistinguisnable from the original as it's being sold as a "new replacement part for the original IMSAI". For $20, it's worth it. I also plan on ordering the replacement 3/16" Plexiglas front for $8. The existing one is in great shape, but it can't hurt having a spare. The red filter looks to be in good shape. -----Original Message----- From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Dave Dunfield Sent: Friday, June 03, 2005 2:20 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: RE: IMSAI Score update/Spare BYTEs/Got an Altair too >> >OK, I pulled the front panel appart tonight and I found out that whoever >> >owned this model colored the silkscreen with magic marker. Bogus! >> > >> >Anyway, I can get a new photomask from Todd Fischer for $20. Well worth >> >it. >> >> I was afraid of that ... Although it's good that you can get a replacement, >> keeping it all original has merit as well - depending on the marker used, >> you might be able to carefully remove it. Try a Q-tip with some whiteboard >> cleaner and move up to stronger solutions as required. > >Oh for ****'s sake. > >How is cleaning off the ink any different from replacing the strip? You >just said, "keeping it all original has merit as well". I guess attacking >it with whiteboard cleaner is not considered a modification to the >original? I don't recall using the verb "attack" ... if he's lucky, the marker used was a soluable one, and it will clean up nicely with no damage to the original strip - if you can do that, then why not clean it up and keep it all original. As Rich noted in a later message, the replacement he can get is not identical to the original... Have you never cleaned up a computer that you really wanted to restore to original condition? >Like sane people do, note down the modification and keep the note with the >system (use a tagged string so you can tie the tag internally to keep Dave >happy). Put the original in a safe place (which is I'm sure what Rich >planned to do). Obviously any cleanup should be attempted with great care, and if it's not going to work, then by all means get the replacement, and keep the original in a safe place.... but that doesn't mean you shouldn't at least investigate restoring the original first. >Sheesh. Here we agree (although from different viewpoints :-) -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

21 years, 3 months

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Heathkit floppy drive (H17) available

by jwest＠classiccmp.org

I just acquired (another) Heathkit H-17 floppy drive, and lord knows I don't need any more of them. This appears to be a hard sector model with the older style drives in it. Pictures are available at: http://www.ezwind.net/jwest/hk17 It is untested, just as I got it. It is dusty, but in good condition and will clean up very nicely. Reasonable offers accepted, if there's no real interest I'll take it off to ebay. Jay

21 years, 3 months

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IMSAI Score update/Spare BYTEs/Got an Altair too

by Richard.Cini＠wachovia.com

Actually, the back of the acetate was colored. The white paper is intact. Looks like isopropyl alcohol is the way to go at first. Rich -----Original Message----- From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Randy McLaughlin Sent: Friday, June 03, 2005 1:58 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: IMSAI Score update/Spare BYTEs/Got an Altair too From: "Dwight K. Elvey" <dwight.elvey at amd.com> Sent: Friday, June 03, 2005 12:26 PM > Hi Rich > Try things like "goof off" as well. I've used rubbing > alcohol to remove marker from plastic in the past with > reasonable results. If it has soaked into the surface, > there is not much that will remove it. > Dwight <snip> As I understand it the marker was on the white paper not the plastic. If so it is unlikely to remove the writing without damaging the paper. If it can not easily be removed and you want to store it where is doesn't get lost I would check to see how well it lines up with a new one from Todd and try to place the new one in front of the original keeping everything togather, maybe with a little note explaining why there are two sheets for future reference. Randy www.s100-manuals.com

21 years, 3 months

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Simulated disk drive for RT-11?

by ajp166＠bellatlantic.net

> >Subject: Re: Simulated disk drive for RT-11? > >>>>>> "David" == David Betz <dbetz at xlisper.mv.com> writes: > > David> I have a device that plugs into a serial port on a PC and > David> looks like a disk drive to an Atari 800. Is there such a thing > David> for RT-11? It seems like it should be possible to write a disk > David> driver that uses a serial port and some sort of serial > David> protocol to communicate with a PC and make RT-11 think it is > David> accessing a local disk drive. > >You could make it look like a TU-58, which is a block structured >device. So RT11 should treat that like a disk. > Thats what the doctor ordered. I have one here, 11/23, 256k, 2serial in a BA11BV 4 slot box and a TU58 (the boxed version). Two drives 256k per drive and slower than slow (tape seeks take forever). A very compact PDP-11. I also have one, ba11 with 11/23, 32kW ram 2 serial and a RQDX3 that allows a hard disk and floppy. Thats fairly compact too. Allison

21 years, 3 months

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IMSAI Score update/Spare BYTEs/Got an Altair too

by dave04a＠dunfield.com

>As I understand it the marker was on the white paper not the plastic. >If so it is unlikely to remove the writing without damaging the paper. If this is the case, then the fix is very easy - cut a strip of white paper the size needed to fit behing "IMSAI 8080" and place it on top of the damaged portion of the existing white paper - Once the screws are firmly in place, it will not move. I recall Rich saying the marker was on "the silkscreen" which I took to mean the transparent/coated film that covers the white paper and blocks out "everywhere that shouldn't be white" ... if this is the case then the marker has to come off, or the film be replaced. Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

21 years, 3 months

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IMSAI Score update/Spare BYTEs/Got an Altair too

by dwight.elvey＠amd.com

Hi Rich Try things like "goof off" as well. I've used rubbing alcohol to remove marker from plastic in the past with reasonable results. If it has soaked into the surface, there is not much that will remove it. Dwight >From: "Cini, Richard" <Richard.Cini at wachovia.com> > >Dave: > > Interesting. I guess that I'll stop by Staples on the way home and >pick up a bottle of the whiteboard cleaner. I did ask the donator what the >story was with the blacked-out logo but I haven't heard from him yet. If he >used a Sharpie marker, I'm not sure that I can get that off without damaging >the plastic. Maybe WD40? > > Like I mentioned, Todd Fischer is selling new computer-generated >masks rather than the photomasks used originally. He claims that the >graphics are sharper and clearer than the original. I would keep the >original photomask in storage anyway. Seeing the logo is more important to >me than keeping the mask vintage. > >Rich > >============================= >Richard A. Cini, Jr. >Director >Wachovia Capital Finance >1133 Avenue of the Americas >New York, NY 10036 >W: 212-545-4402 >F: 212-545-4589 > > >-----Original Message----- >From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] >On Behalf Of Dave Dunfield >Sent: Friday, June 03, 2005 9:23 AM >To: General Discussion: On-Topic and Off-Topic Posts >Subject: RE: IMSAI Score update/Spare BYTEs/Got an Altair too > >>OK, I pulled the front panel appart tonight and I found out that whoever >>owned this model colored the silkscreen with magic marker. Bogus! >> >>Anyway, I can get a new photomask from Todd Fischer for $20. Well worth >>it. > >I was afraid of that ... Although it's good that you can get a replacement, >keeping it all original has merit as well - depending on the marker used, >you might be able to carefully remove it. Try a Q-tip with some whiteboard >cleaner and move up to stronger solutions as required. > >Regards, >Dave >-- >dave04a (at) Dave Dunfield >dunfield (dot) Firmware development services & tools: www.dunfield.com >com Collector of vintage computing equipment: > http://www.parse.com/~ddunfield/museum/index.html > >

21 years, 3 months

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Question about PDF manipulation

by Watzman＠neo.rr.com

Adobe Acrobat has almost unlimited manipulation capabilities. You can rearrange pages, add pages (from almost any format .... word documents, JPEGs, other PDFs, scanners, TIFF .... just about anything), rotate pages, delete pages, and export pages as graphic images (in just about any format). You can export pages, do "whatever" to them, and reimport them. Also, it may be possible to "re-image" the entire PDF file to shrink it's size, although I've not done that. If you drop any requirement for compatibility with versions of Acrobat versions 4 and earlier (the current version is 7), the files can be shrunk dramatically, although I'm not sure if there is an easy one-step way to do this in the "standard" version (there is a separate stand-alone PDF file optimizer in the "pro" version). In my own view, Acrobat versions 4 and earlier are now too old to be productively used. Of course, I'm talking about "full version" Adobe Acrobat, not simply the [free] "Acrobat Reader".

21 years, 3 months

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Question about PDF manipulation

by r_a_feldman＠hotmail.com

There is an ISO standard for PDF/X. An ISO standard for PDF/A has just been (or will soon be adopted). Message: 8 Date: Fri, 03 Jun 2005 11:42:21 +0000 From: Jules Richardson <julesrichardsonuk at yahoo.co.uk> Subject: Re: Question about PDF manipulation To: cctalk at classiccmp.org <snip> But there is a question of whether conversion to PDF throws important data away, or whether Adobe might suddenly change the tools, or whether they'll carry on getting ever more bloated, or whether PDF's going to be a viable format in ten years time... <snip>

21 years, 3 months

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Help collecting gear from west of Chicago

by drb＠msu.edu

> The CPU is a PDP-11/44 with additional labels indicating it was a > Teradyne Teranet ATE Networking System, whatever that is. In addition > to the CPU, the tall cabinet (purple and orange DEC banner across the Whoa, dain bramage. That should read "purple and magenta". De

21 years, 3 months

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IMSAI Score update/Spare BYTEs/Got an Altair too

by Richard.Cini＠wachovia.com

Dave: Interesting. I guess that I'll stop by Staples on the way home and pick up a bottle of the whiteboard cleaner. I did ask the donator what the story was with the blacked-out logo but I haven't heard from him yet. If he used a Sharpie marker, I'm not sure that I can get that off without damaging the plastic. Maybe WD40? Like I mentioned, Todd Fischer is selling new computer-generated masks rather than the photomasks used originally. He claims that the graphics are sharper and clearer than the original. I would keep the original photomask in storage anyway. Seeing the logo is more important to me than keeping the mask vintage. Rich ============================= Richard A. Cini, Jr. Director Wachovia Capital Finance 1133 Avenue of the Americas New York, NY 10036 W: 212-545-4402 F: 212-545-4589 -----Original Message----- From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Dave Dunfield Sent: Friday, June 03, 2005 9:23 AM To: General Discussion: On-Topic and Off-Topic Posts Subject: RE: IMSAI Score update/Spare BYTEs/Got an Altair too >OK, I pulled the front panel appart tonight and I found out that whoever >owned this model colored the silkscreen with magic marker. Bogus! > >Anyway, I can get a new photomask from Todd Fischer for $20. Well worth >it. I was afraid of that ... Although it's good that you can get a replacement, keeping it all original has merit as well - depending on the marker used, you might be able to carefully remove it. Try a Q-tip with some whiteboard cleaner and move up to stronger solutions as required. Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

21 years, 3 months

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IMSAI Score update/Spare BYTEs/Got an Altair too

by dave04a＠dunfield.com

>OK, I pulled the front panel appart tonight and I found out that whoever >owned this model colored the silkscreen with magic marker. Bogus! > >Anyway, I can get a new photomask from Todd Fischer for $20. Well worth >it. I was afraid of that ... Although it's good that you can get a replacement, keeping it all original has merit as well - depending on the marker used, you might be able to carefully remove it. Try a Q-tip with some whiteboard cleaner and move up to stronger solutions as required. Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

21 years, 3 months

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IMSAI Score update/Spare BYTEs/Got an Altair too

by dave04a＠dunfield.com

> Yes, you're right...I guess now I can cross it off the list (Austin >Powers is one of my favorite movies BTW. Yeah, baby!). However, if you >already have an [insert rare machine name here] and someone offered you a >second one of the same for the cost of shipping, would you (or anyone on >this list) turn it down unless they were seriously out of space? Besides, the next Altair might be an original 8800 or an 8800-A ... I have two 8800's, but I would love to get a -A and a -B as well (and I wouldn't turn down another 8800 either :-) > Time to watch War Games... Yeah, when I finally got my IMSAI a couple of months ago, I actually bought the Wargames DVD just so I could show my kids that the computer was in the movie (and I wanted to see it again as well). regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

21 years, 3 months

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OT, but funny

by news＠computercollector.com

I got an HP brochure in the snail mail today, the kind of insert they put into Sunday newspapers... I flipped through it and noticed in the PocketPC section that the sample screen image showed the standard "today" listing... The list said "Owner: Peter Gibbons" and the task item was "Review TPS reports." Gotta love nerd humor. It was a fairly tiny font, so I wonder how many people will notice the joke. ----------------------------------------- Evan Koblentz's personal homepage: http://www.snarc.net Also see http://groups.yahoo.com/group/midatlanticretro/ *** Tell your friends about the (free!) Computer Collector Newsletter - 735 readers and no spam / Publishes every Monday / Write for us! - Mainframes to videogames, hardware and software, we cover it all - W: http://news.computercollector.com E: news at computercollector.com

21 years, 3 months

8
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IMSAI Score update/Spare BYTEs/Got an Altair too

by Richard.Cini＠wachovia.com

Mike: Yes, you're right...I guess now I can cross it off the list (Austin Powers is one of my favorite movies BTW. Yeah, baby!). However, if you already have an [insert rare machine name here] and someone offered you a second one of the same for the cost of shipping, would you (or anyone on this list) turn it down unless they were seriously out of space? Time to watch War Games... Rich -----Original Message----- From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Michael Holley Sent: Thursday, June 02, 2005 11:56 PM To: cctalk at classiccmp.org Subject: IMSAI Score update/Spare BYTEs/Got an Altair too Rich, I checked out your web site and you have an IMSAI and an Altair on your wanted list. You can be like Austin Powers and scratch those off the list. Michael Holley > Date: Wed, 01 Jun 2005 21:55:36 -0400 > From: "Richard A. Cini" <rcini at optonline.net> > Subject: IMSAI Score update/Spare BYTEs/Got an Altair too > To: CCTalk <cctalk at classiccmp.org> > Rich Cini > Collector of classic computers > Build Master for the Altair32 Emulation Project > Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/

21 years, 3 months

1
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HP9000 Flexible Disk Subsystem

by technobug＠comcast.net

I spotted an 8" floppy disk subsystem (2 + controller board) for an HP 9??? system (was in a rush and didn't have time to get the particulars). If anyone is interested, ring my bell and I'll follow up with the details. CRC

21 years, 3 months

1
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IMSAI Score update/Spare BYTEs/Got an Altair too

by swtpc6800＠comcast.net

Rich, I checked out your web site and you have an IMSAI and an Altair on your wanted list. You can be like Austin Powers and scratch those off the list. Michael Holley > Date: Wed, 01 Jun 2005 21:55:36 -0400 > From: "Richard A. Cini" <rcini at optonline.net> > Subject: IMSAI Score update/Spare BYTEs/Got an Altair too > To: CCTalk <cctalk at classiccmp.org> > Rich Cini > Collector of classic computers > Build Master for the Altair32 Emulation Project > Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/

21 years, 3 months

1
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2004 VCF East Pictures...

by wh.sudbrink＠verizon.net

I just noticed somebody from Austin, Texas trying to access my pictures >from last year's VCF East. I had a drive on my server crash a couple of weeks ago and hadn't gotten around to restoring them. They are available now: http://wsudbrink.dyndns.org:8080/vcfe2004/ Bill

21 years, 3 months

5
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IBM 8513 monitors

by SUPRDAVE＠aol.com

>In a message dated 6/2/2005 11:17:51 AM Eastern Standard Time, lproven at gmail.com >writes: >This is the original IBM VGA monitor from 1987. >I'm still using one of these alongside my classic Model M keyboards. >I'm keeping it to go with my original (but now heavily tricked-out) >PS/2 Model 80-A21 (16MB RAM! 1.3GB of SCSI disk! CD! NIC! Windows NT >Server 3.51 SP5! (All right, it does also have PC DOS 7 and OS/2 Warp >Server 4, but I can't get Warp to talk to the NIC, so that's just a >curiosity, whereas NT runs like a dream on it. Rock solid, just >sluggish.) I'm surprised you cannot get a NIC to work in OS/2. If it's a 3com or Cabletron, it should be dead easy, as long as you've got the NDIS drivers. Sometimes you have to monkey around with ibmlan.ini I think.

21 years, 3 months

2
1
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HP2000

by jwest＠classiccmp.org

Just scored (and received in the mail today) something off ebay I've been wanting for some time. There was a nice 8 page foldout color brochure with intact "more info" mail-in card for the HP2000 (TSB) computer system there, mint condition. I halfheartedly bid, because I couldn't tell for sure if the brochure was for the general HP2000 stuff or if it was specific to TSB. Turns out it was quite specific to TSB and it's simply gorgeous. Am I the only collector that actually ponders sending in warranty cards or sales response cards (as a joke) for a product that was discontinued 30 years ago? I always giggle about the look on the recipients face. But I'd never write on an original card :) Now I need to see if Kinkos can blow the cover up into a nice marketing poster to frame and hang on the wall next to the old girl - since I can't seem to find any real HP2000 posters. On another note... the brochure reminded me that there are a few bits and pieces of HP2000/TSB software that I've never found. They aren't terribly critical, but I want to be complete. Would anyone have copies of any of the following HP software on mag tape? SDE/2000 (source data entry) EDITOR/2000 (duh) TSP/2000-HASP (telecommunications supervisory package) FCOPY/2000 (file utility) I think FCOPY I already have on the MCP tape, but I think the others were separate tapes. In addition, it would be rather neat to have a copy of the CAI (computer assisted instruction), IDF (instructional dialogue facility), and CWF (course writing facility) software load tapes. I actually used IDF on the HP2K at my high school, but it'd be nice to find all these optional software modules. Regards, Jay West

21 years, 3 months

1
1
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Nascom 2 keyboard connector

by pete＠dunnington.u-net.com

On Jun 2 2005, 13:16, Jules Richardson wrote: > > Does anyone have the pinouts of the Nascom 2 keyboard connector handy? > > I'm wondering if there are any duplicated ground lines such that I can > get away with running a cable via DA15 connectors (the connectors on the > '2 and keyboard PCBs are 16 pin headers) Mine's not handy, but it does in fact have a DA15 plug on the keyboard and a DA15 socket on the Nascom chassis. So although I can't tell you which line to drop, it would seem it is possible to do so. -- Pete Peter Turnbull Network Manager University of York

21 years, 3 months

2
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OT, but funny

by pete＠dunnington.u-net.com

On Jun 2 2005, 16:01, Vintage Computer Festival wrote: > On Thu, 2 Jun 2005, Computer Collector Newsletter wrote: > > The list said "Owner: Peter Gibbons" and the task item was "Review TPS > > reports." > > > > Gotta love nerd humor. It was a fairly tiny font, so I wonder how many > > people will notice the joke. > > I don't get it. >From the film "Office Space". See http://www.answers.com/topic/office-space -- Pete Peter Turnbull Network Manager University of York

21 years, 3 months

1
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HP 9133/9134/9135 service manual

by rigdonj＠cfl.rr.com

David Bryan just scanned and sent me a copy of "HP's 5 1/4-Inch Winchester Disc Drive Service Documentation" (HP 09134-90032, August 1983) for the old style HP 9133/9134 and 9135 disk drives. Besides the always useful service information, it includes explainations of which drives can be made to look like 4 1.15Mb floppy drives for use on the HP-85 and other small systems that don't normally use the HP hard drives. I've posted it at "http://www.classiccmp.org/hp/HP%20Docs/". Thanks David! Joe

21 years, 3 months

2
3
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collector in Arizona/Nevada?

by jwest＠classiccmp.org

A collector in Arizona or Nevada (can't remember which) emailed me yesterday or today, and when I was accessing my mailbox remotely I accidentally deleted the email :\ Can whoever it was please re-email me? I know I wanted to respond to that email. Jay West

21 years, 3 months

4
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Test

by mamegrrl＠ll.net

Going back to 2003 and a post you made about the Radio Shack Science Fair 10 in 1... :) I have a manual for the 28-225 if you would like a scanned copy. Just let me know. -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.322 / Virus Database: 267.5.0 - Release Date: 6/2/2005

21 years, 3 months

1
0
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collector in Arizona/Nevada?

by dwight.elvey＠amd.com

>From: "John Lawson" <jpl15 at panix.com> > >I'm the only collector in NV (that I know of) - and t'weren't moi.... > > >Cheerz > >John Hi I was in Nevada, just this weekend! Dwight

21 years, 3 months

1
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IBM 5155 analogue display fault

by dwight.elvey＠amd.com

>From: jpero at sympatico.ca >> > > But PCB tracks can be easily un-cut -- just solder a piece of wire >> > > over the break. Wire-wrap wire (stripped, of course) is ideal for >> > > this. >> > > >> > >> > Yikes! >> > >> > I am the guy who in the past has had to figure out what the HECK is >> > wrong with a board, where somebody 'just tacked a piece of wire along >> > the track.' Such forms of modification/repair often _disguise_ a wiring >> >> I have _never_ had a problem doing this (read : I've never had such a >> repair fail, even after <n> years). Now a blob of solder across a break >> will _not_ hold, you must put the wire there. >> >> I typically put at least 1/2" of wire on each side of the break and >> solder it down. >> >> -tony > >Yikes? I do this for TV/Projector, PC boards all the times on >tracks that comes off for any reason, bridge cracked PCB etc. I >scrape off mask and polish it with eraser rod and lay sized and cut >to length if needed pre-shaped to follow the bends in the trace and >solder. > >This repair method is stronger. > >Cheers, Wizard > Hi Medical equipment standards are a little different than what we do. I also do this type of repair and consider it more than adequate. There are several problems though. First is that if one scrapes the plating off to bare copper, a solder to copper joint ages to form a high resistance connection. This is increased by temperature ( mostly a problem in high power locations and old tube circuits ). The other reason is that such joints are sometime difficult to verify if the solder was properly done, especially when the wire is large compared to the trace. Dwight

21 years, 3 months

2
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Idiot Alert

by vcf＠siconic.com

Will someone please talk to this guy before he single-handedly renders this hobby utterly ridiculous!?!? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5201588973&rd=1&sspagena… -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

21 years, 3 months

6
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"Pozidriv" [was Re: Tools (was: IBM 5155 analogue display fault]

by dwight.elvey＠amd.com

>From: "Paul Koning" <pkoning at equallogic.com> > >>>>>> "Joe" == Joe R <rigdonj at cfl.rr.com> writes: > > Joe> You mean $napOn! Checkout the ads in NutsNVolts, you can buy a > Joe> whole set of interchangeable bits for about $5. That's a > Joe> fraction of what SnapOn or the TechTool suppliers will charge > Joe> you for a single bit. > >Yes. The difference is that stuff that cheap typically doesn't fit >and doesn't stand up to use. > >I once bought a cheap drillbit set. What I got was a box full of >pieces of drillrod. They pretty much all had a spiral groove cut in >the sides, though often only just barely. And there usually was at >least a trace of a bevel at the tip. Cutting edge? Dream on... > >Fortunately, the seller honored his money-back guarantee. > >That's not to say I now buy my drill bits from SnapOn. But it does >mean that I avoid Harbor Freight and all their clones for stuff like >this. I only buy cheap tools when I understand the limitations. Cheap socket sets are only good for making spacers and tools to drive out seals and bearings. Dwight > > paul > >

21 years, 3 months

1
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Question about PDF manipulation

by dwight.elvey＠amd.com

>From: "Jules Richardson" <julesrichardsonuk at yahoo.co.uk> > ---snip-- > >If it's proprietary then the less use it is for a long-term archival >format though, surely? Same goes for complexity; increased complexity of >the format makes it harder to extract the data without the relevant >tool, which of course might be difficult to find in years to come... > >cheers > >Jules Hi The distinction between a distribution tool and an archival tool. For images, the best archival format that I know of is the tiff. Not so much that there are copious tools for it but because it is about as simple a formatting for images as one can get. When down loading I prefer pdf's. It doesn't mean that I think that an archive should use pdf's to store the images. Dwight

21 years, 3 months

1
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C128 CPM Boot Disk

by jrice54＠vzavenue.net

Anyone have a CPM+ boot disk for a Commodore 128D?

21 years, 3 months

2
1
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Inland ProBackup 500 sought (pinouts or software)

by ERBOTxMa＠aol.com

Did you ever get an intelligent response to your inquiry noted below?? Am now looking for a replacement battery for the same. >From a previous life, I have a perfectly fine working UPS. The brand says "Inland - by ABI International". Model is "Probackup5000", part number is 19500. It has a DB9 serial port on the back for interfacing with a host to notify it of loss of ac, impending shutdown, etc. However, I don't have the software (for Windoze) that came with it. I've googled for hours, and can't come up with anything on this exact unit. Would anyone happen to have windows software for it? As a last resort, how standard is the DB9 pinout (IF I can find the pinout, no luck there either)... I'm wondering if I can use just about any UPS software for it. Any advice?

21 years, 3 months

1
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IMSAI Score update/Spare BYTEs/Got an Altair too

by dave04a＠dunfield.com

>There are four "layers" to the IMSAI panel. More accurately, there are five layers, the four I just described, with the 5th one being the circuit board with LEDs and switches mounted etc. Regards. Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

21 years, 3 months

1
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IMSAI Score update/Spare BYTEs/Got an Altair too

by dave04a＠dunfield.com

>>If I recall correctly, the "logo" is composed of two parts, one is a >>clear plastic sheet with black printing that gives the shape of all >>of the letters, switch and light legends, etc. Behind that, there >>should be a sheet of foil backed white paper. Those two sheets are >>sandwiched between a sheet of clear and red Plexiglas. Sounds like >>you are missing the white sheet. >I'll have to separate that part of the panel. What is the "white sheet" made >of? Would glossy white card stock work? Maybe it slipped down out of view of >the mask. There are four "layers" to the IMSAI panel. At the very front is a layer of clear plexiglass - for protection, and the outer layer of the "sandwich". Behind that is a thin layer of mylar, which is entirely coated in black, except for the panel lettering which is clear (ie: "reverse video"), and clear rectangles where the LED's show through. Behind that is a piece of material which is white on the front, and foil coated on the back. In the rectangles where the LEDs show through, there is nothing. The rearmost layer is a sheet of red plexiglass. The LEDs show through the red plexiglas, though the holes in the white/foil piece, though the clear rectangles in the mylar and through the clear front piece - the red plexiglas in the read give them a nice obscured/deep-red background. The panel lettering is the white side of the white/foil piece which is visible through the clear lettering in the mylar, and the clear front panel. This piece would not "Drop" or shift because it has 8 screw holes through it and is held in place by the other pieces and the screws, and also because if it could, it would hit the panel switches. It would not make sense (although possible) to remove the white/foil piece, since this would render ALL front panel lettering invisible, and would also allow the LEDs to be visible at angles when they should not (when looking through the lettering for example). I think it more likely that the white part behind the IMSAI 8080 has been removed or covered. It may be as simple as removing a piece of black paper >from behind the IMSAI 8080 logo - If necessary, you may have to cut a piece of white paper to fit in this space. The worse case scenario would be if the former owner used a black marker to color the IMSAI 8080 clear letters from the rear of the panel... This might also be repairable, but be very careful not to remove the intentionally black parts. Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

21 years, 3 months

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IMSAI Score update/Spare BYTEs/Got an Altair too

by Richard.Cini＠wachovia.com

I'll have to separate that part of the panel. What is the "white sheet" made of? Would glossy white card stock work? Maybe it slipped down out of view of the mask. -----Original Message----- From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Bill Sudbrink Sent: Thursday, June 02, 2005 11:34 AM To: General Discussion: On-Topic and Off-Topic Posts Subject: RE: IMSAI Score update/Spare BYTEs/Got an Altair too > I've never seen an IMSAI before in-person. The front panel does > not have the white "IMSAI 8080" logo. You can see a silhouette > of it under the Plexiglas mask. Does the logo light-up when turned > on? Maybe this is a replacement mask (although the screws do not > appear to be disturbed)? If I recall correctly, the "logo" is composed of two parts, one is a clear plastic sheet with black printing that gives the shape of all of the letters, switch and light legends, etc. Behind that, there should be a sheet of foil backed white paper. Those two sheets are sandwiched between a sheet of clear and red Plexiglas. Sounds like you are missing the white sheet. Bill

21 years, 3 months

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IMSAI Score update/Spare BYTEs/Got an Altair too

by Richard.Cini＠wachovia.com

Yes, I think I heard this before :-) I'm excited. I opened the IMSAI last night and it's immaculate inside. There's only a slight layer of dust on the power supply section. The buss connectors look like they're in great shape and the switches appear only gently used with a nice "snap" action. I spoke to Todd Fischer and he places the serial number (#3526) in either the second or third quarters of 1976. A Bicentennial IMSAI! I've never seen an IMSAI before in-person. The front panel does not have the white "IMSAI 8080" logo. You can see a silhouette of it under the Plexiglas mask. Does the logo light-up when turned on? Maybe this is a replacement mask (although the screws do not appear to be disturbed)? It hasn't been used in 15 years. I'm going to load the supply this weekend and hook it up to a variac. Does anyone have any recommendations for appropriate supply loading for testing purposes? Rich -----Original Message----- From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of James Fogg Sent: Thursday, June 02, 2005 9:17 AM To: General Discussion: On-Topic and Off-Topic Posts Subject: RE: IMSAI Score update/Spare BYTEs/Got an Altair too > I received a second set of boxes from my IMSAI donator. > Today, I received the IMSAI itself, a copy box of BYTEs and a > box of S100 cards. This adds to two copy boxes of 8" disks > and another box of S100 boards I got a few weeks ago. Did I mention you suck :-) ---- There are only 10 types of people in the world, those who understand binary and those who don't.

21 years, 3 months

3
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IBM 8513 monitors

by lproven＠gmail.com

This is the original IBM VGA monitor from 1987. I'm still using one of these alongside my classic Model M keyboards. I'm keeping it to go with my original (but now heavily tricked-out) PS/2 Model 80-A21 (16MB RAM! 1.3GB of SCSI disk! CD! NIC! Windows NT Server 3.51 SP5! (All right, it does also have PC DOS 7 and OS/2 Warp Server 4, but I can't get Warp to talk to the NIC, so that's just a curiosity, whereas NT runs like a dream on it. Rock solid, just sluggish.) However, of the 2 8513s I have, one no longer shows an image. It's just silently died. The power LED comes on but the screen is blank. I have another 8513 in very occasional service at a client of mine's but I plan to rescue it if they ever bin it. Does the list think anyone would want a dead 8513, for repair or whatever, or should I just bin this venerable VDU after 18yr of loyal service? -- Liam Proven Home: http://welcome.to/liamsweb * Blog: http://lproven.livejournal.com AOL, Yahoo UK: liamproven * ICQ: 73187508 * MSN: lproven at hotmail.com

21 years, 3 months

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IMSAI Score update/Spare BYTEs/Got an Altair too

by dave04a＠dunfield.com

Hi Rich, >I've never seen an IMSAI before in-person. The front panel does not have the >white "IMSAI 8080" logo. You can see a silhouette of it under the Plexiglas >mask. Does the logo light-up when turned on? Maybe this is a replacement >mask (although the screws do not appear to be disturbed)? The "IMSAI 8080" does not light up and should appear clearly visible in white. Sounds like the logo was removed for some reason ... hopefully it was covered with a bit of black paper and not "backed out with a marker". I have a decent picture of an IMSAI front panel by itself on my website. For now, the easiest way to get to it is to click on "Vector 1+" which will take you to my general S-100 section, and scroll up ... the photo just before the Vector is an IMSAI panel. (at the time I did the last update I only had the panel which is why there is no listing for a machine - I have since acquired a complete IMSAI which will have it's own section at my next major update which should be within the next couple of weeks). The panel is quite easy to take off/apart. First remove the power switch connections from the upper corner of the panel in front of the power supply (live AC - do this unplugged obviously) and umbilical cable from the CPU board. There are 8 small hex screws in the front of the panel - when you remove them, be careful as the spacers from the rear and center boards will drop out (Took me 1/2 hour of searching the floor of my workshop the first time I "discovered" this. After that, the panel should just unplug from the S-100 bus and come out. The various pieces will separate, you should be able to remove the plexiglass front and get at the insert which has the labels and logo - Be VERY careful as the layers can stick together, take them apart slowly to avoid damage. Behind the insert is a "foil" paper which blocks light to all but the desired places. At this point you should be able to determine what was done to the logo, and if it is recoverable. Putting it together is the reverse - Assemble the layers and internal spacers, and insert the hex screws far enough to just stick out the back, then carefully plug the panel into the S-100 bus, making sure not to pull the screws out and' drop the internal spaces. I found it easiest to install the two middle/bottom spaces first, using thin long nose pliers to slide them in place while extracting the screws just enough to let them pass - then put the screws in enough to catch in the threads but leave them out far enough that you can still rock the panel back and forth. After that, it's easy to put in the remaining spaces around the edges, and once all is in place and looking good, you can snug them in. I've had both of my panels apart without too much difficulty. >It hasn't been used in 15 years. I'm going to load the supply this weekend >and hook it up to a variac. > >Does anyone have any recommendations for appropriate supply loading for >testing purposes? As it's a linear supply, you don't really nead to load it initially. I highly recommend powering it through a series light bulb and bring up the line voltage slowly. Monitor the DC levels and you should see +8, +/-16 coming up as the line voltage rises. With something this old, it's a good idea to bring it up in steps allowing plenty of time for the capacitors to reform at each step. With no load on the supply, the light bulb should not glow at all, except briefly during initial charging of the capactors (which you won't see if you are bringing it up slowly). If the light glows as you bring up the supplies, you likely have a shorted filter capactor or failed rectifier diodes. (sometimes the chassis fan draws enough power to cause the lamp to glow dimmly buy it should not glow brightly with an unloaded supply). Once you have it running at operational voltages, it's a good idea to test it under a load and observe the waveform at the filter capacitors with a scope. A 20-40 watt 12v bulb works pretty good for this. Get it up and running and delivering a few amps of power and look for excessive ripple - this would indicate dried out capactiors. Btw, be sure to remove the series light bulb before attempting load tests. Always be careful when working on the IMSAI as it has AC line voltage to the front panel which is unprotected when the cover is off. Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

21 years, 3 months

1
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IBM 5155 analogue display fault

by julesrichardsonuk＠yahoo.co.uk

Just picked up an IBM 5155 luggable which was working up until the point the chap switched it on to show me it working, when it promptly broke :-) On switch on it gives a narrow horizontal band of amber about 1.5" high; after a couple of seconds the whole screen changes to flickering amber with brighter zig-zag flyback lines visible. Just thought I'd quickly ask in case there's component foo that's a common failure in these machines (I haven't even pulled the case to look for an obvious failure yet, let alone do anything else) ta Jules

21 years, 3 months

24
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IMSAI Score update/Spare BYTEs/Got an Altair too

by James＠jdfogg.com

> I received a second set of boxes from my IMSAI donator. > Today, I received the IMSAI itself, a copy box of BYTEs and a > box of S100 cards. This adds to two copy boxes of 8" disks > and another box of S100 boards I got a few weeks ago. Did I mention you suck :-) ---- There are only 10 types of people in the world, those who understand binary and those who don't.

21 years, 3 months

1
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SGI Indigo2 IMPACT questions...

by julesrichardsonuk＠yahoo.co.uk

Dan Williams chucked us an Indigo2 the other week amongst a load of DEC stuff - I've only just had chance to take a look at it, although I've brought it home for the week to fiddle with :) Initial questions: How to I tell what IMPACT video board it has? (Other than powering it up I suppose, but I'm going to be giving it a good clean inside first...) Anyone have the SCSI connector pinouts? The machine has no drive sleds, so I need to improvise something (I gather it's not compatible with SCA, despite being the same physical connectors). Worst case I could run it >from an external disk I suppose. Any special flavour of memory the machine needs? I've got a bucket of 72 pin SIMMs of various types kicking around, so I'm sure I'll have something that'll work... ... that'll do for now :) Once I've checked the machine over and made sure it looks like it'll work I'll worry about install media (I've got IRIX CDs - just a question whether they support the R8k / R10k CPU in this machine) cheers Jules

21 years, 3 months

7
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HP 9915 system Development Manual wanted

by john.vc＠btinternet.com

Hi, I am looking for a complete copy of the following, if anyone has seen this please get in touch or send a message to cctalk at classiccmp.org: HP 9915 System Development manual 9915 Tape Duplication and EPROM Programming Software I once had these (over 20 years ago), I noted one program included was called SHRINK, which removed all the comments from a Basic program. There is an incomplete copy of the manual here: http://www.series80.org/HP-9915A/HP9915-SysDev.pdf (site or DNS currently down) this should help identify it. Thanks, John

21 years, 3 months

1
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classiccmp question

by jwest＠classiccmp.org

Ok, I noticed that yet another of the password reminder emails went out - just got mine anyways. I was going to apologize about this - because I did get one complaint about a password being sent via email - so I went in months ago and turned off the 'email password reminder' function. I'm at a loss to explain why it went out again. I've checked it twice, once each of the past two months when the email went out. Before I did into this in detail, I thought I'd ask the rest of the list. Who all thinks password reminders should not be sent monthly? On the one hand, I'm not keen about sending passwords in plain text (but I assume people here don't use the same password for all their accounts, right?). On the other hand, the reminders also include information about how to unsubscribe, maintain your settings, etc. Those probably save me some time answering questions. Thoughts? Jay West

21 years, 3 months

5
4
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C64 ROMs

by dm561＠torfree.net

I seem to recall someone on this list looking for a C64 ROM; I've got a number of scrapped C64s, so if he/she reads this and is still looking, write me off-list and I'll see what I can find. mike

21 years, 3 months

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Update on HHC Basics

by dm561＠torfree.net

----------Original Message: Date: Tue, 31 May 2005 22:45:48 -0400 From: David Betz <dbetz at xlisper.mv.com> Subject: Re: Update on HHC Basics Has anyone who ordered one of these ROMs received it yet? I haven't received mine and I've tried to send Roger email on a number of occasions and have gotten no reply. Has anyone else heard from him? Thanks, David ----------Reply: I have no use for the programmed EPROMs but Roger was kind enough to send me some blank ones from that pile, no problem. mike

21 years, 3 months

1
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IMSAI Score update/Spare BYTEs/Got an Altair too

by rcini＠optonline.net

All: I received a second set of boxes from my IMSAI donator. Today, I received the IMSAI itself, a copy box of BYTEs and a box of S100 cards. This adds to two copy boxes of 8" disks and another box of S100 boards I got a few weeks ago. The IMSAI is immaculate. Not a shread of dirt anywhere...even on the switches. Serial# 3526. I'm going to email Todd Fischer and see where this unit was in the production. I also received more BYTEs, so now I have a lot of spares. I'll have a list together over the weekend of what's spare, but IIRC they will mostly be in the 1977-1980 range. Now, on to the Altair. In a momentary bout of weakness, I put a Hail Mary bid on an 8800b on eBay last night and I won it. It'll be here next week. It's going to be a fun summer! Rich Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/

21 years, 3 months

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Intel UPP103 Cable

by dwight.elvey＠amd.com

>From: "xyz" <rsnats at bellsouth.net> > >I have a Intel MDS-800 and a UPP-103. I don't have the cable that connects the two units. Both units have DB-25 D-type connectors. Does anyone have a wiring diagram of this cable. > Hi I think I have it someplace. There are about 3 or 4 lines that need to be twisted pairs with a ground lead. The original used a bundle of twisted pairs that had black leads for the one twisted lead. I many cases, the black leads carried data signals and not ground. The cable manufacture only checked that the cable had continuity and not that the right pairs were twisted. When I worked at Intel, I made a checker that would display the number of incorrect twisted pairs by doing a transformer coupling of the wires. It may take me a while to look for the programmer cable drawings. Hopefully, Joe or Dave can find one quicker. Dwight

21 years, 3 months

2
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IBM 5155 analogue display fault

by dwight.elvey＠amd.com

>From: ard at p850ug1.demon.co.uk > ---snip--- >However, I make those modifications as reversable as possible (I would >rather not cut a PCB track, but sometimes there is no other way, for >example). And I don't make them if I don't have to (which is what this >darn thread started off about). > >-tony > > Hi I guess I'm like you. I have a Olivetti M20 and wanted to get the CPM-8000 running on it. The original memory cards had 16K DRAMs that gave the system 224K. To run CPM-8000 I needed to have 64K DRAMs. It required that I unsolder the DRAMs, some capacitors and cut a power line to configure for the larger DRAMs. While I would have prefered to get the larger memory boards from the manufacture, this was not all that practical. I felt that getting working images of the CPM-8000 was more important. A computer that doesn't work is an interesting pile of hazardous waste. One that works is a window into what was. Dwight

21 years, 3 months

2
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Oops! I meant HP 64000 LDS Manual! WAS: HP 9133/9134/9135 service manual

by rigdonj＠cfl.rr.com

This afternoon David send me a PDF copy of the HP 64000 Logic Developement System Configuration manual. I've posted it in the same directory with the HP disk drive manual. <http://www.classiccmp.org/hp/HP%20Docs/> Joe David Bryan just scanned and sent me a copy of "HP's 5 1/4-Inch Winchester Disc Drive Service Documentation" (HP 09134-90032, August 1983) for the old style HP 9133/9134 and 9135 disk drives. Besides the always useful service information, it includes explainations of which drives can be made to look like 4 1.15Mb floppy drives for use on the HP-85 and other small systems that don't normally use the HP hard drives. I've posted it at "http://www.classiccmp.org/hp/HP%20Docs/". Thanks David! Joe

21 years, 3 months

1
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"Pozidriv" [was Re: Tools (was: IBM 5155 analogue display fault]

by pete＠dunnington.u-net.com

On Jun 1 2005, 18:14, der Mouse wrote: > >>> My first repair job was when I used a butter knife on the toaster > >> a good start, and hopefully you have better tools now :-) > > Personally I still find myself places I have to check the cutlery to > > repair something (when I'm at someone elses house). > > There's a reason I always carry my Swiss Army knife. :-) (It's not a > very elaborate one, and not nearly up to comparison with, say, a > Leatherman, but it's pretty versatile given a little imagination.) I always carry one, too. I do actually own a fairly elaborate one, but the one I carry is quite simple. I carefully ground the end of one blade so it fits (approximately, but "well enough") many Philips/Pozidriv screws, and is useful if they're not too tight. The real challenge wa geting it to also fit the rather odd slotted Torx screws used on HP equipment :-) -- Pete Peter Turnbull Network Manager University of York

21 years, 3 months

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VR201s free-ish, and more.

by leeedavison＠yahoo.co.uk

Uncovered a couiple of these and no longer need them. As they were stored I guess they work but don't have cables to test them. Ed, they may work with the HP-86s. 8^)= Located in the UK, pickup or delivery costs. Mac powerbook 145. This genuinely fell off the back of a lorry hence the condition, which can only be described as "jigsaw". Good for parts, including the screen which is intact. Lee. . ___________________________________________________________ How much free photo storage do you get? Store your holiday snaps for FREE with Yahoo! Photos http://uk.photos.yahoo.com

21 years, 3 months

2
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HP 9133/9134/9135 service manual

by rigdonj＠cfl.rr.com

This afternoon David send me a PDF copy of the HP 64000 Logic Developement System Configuration manual. I've posted it in the same directory with the HP disk drive manual. Joe David Bryan just scanned and sent me a copy of "HP's 5 1/4-Inch Winchester Disc Drive Service Documentation" (HP 09134-90032, August 1983) for the old style HP 9133/9134 and 9135 disk drives. Besides the always useful service information, it includes explainations of which drives can be made to look like 4 1.15Mb floppy drives for use on the HP-85 and other small systems that don't normally use the HP hard drives. I've posted it at "http://www.classiccmp.org/hp/HP%20Docs/". Thanks David! Joe

21 years, 3 months

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"Pozidriv" [was Re: Tools (was: IBM 5155 analogue display fault]

by pete＠dunnington.u-net.com

On Jun 1 2005, 13:14, Fred Cisin wrote: > > A Phillips bit will work moderately well on a Pozidriv screw, but the > > about as well as a butter knife works on slotted screws My mother keeps a particular potato peeler because it fits Philips screws. -- Pete Peter Turnbull Network Manager University of York

21 years, 3 months

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Intel application notes archive was Re: AN1127 application note

by dave04a＠dunfield.com

>Does anyone know of an archive for Intel Application notes? > >I'd like to find the application notes on building a CRT using the 8275 (one >was for the 8080 the other for the 8085). The closest I could find was one >using 8276 & 8051. Randy, On semi-random picking of my library, I hit one on the first try, this is in Intel 1986 "Microsystem Components Handbook - Peripherals Volume II", there is an application note entitled AP-62 "A Low Cost CRT Terminal using the 8275". It describes the contruction of a small terminal using the 8275 and an 8085. It is about 40 pages long ... if you "really really" need me to, I can scan it for you. Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

21 years, 3 months

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AN1127 application note

by leeedavison＠yahoo.co.uk

Anyone have a copy of this Motorola app note? It seems my 'fax back' paper copy has faded beyond readability over the years and I can't locate an electronic copy. The full title is .. "High Speed DRAM Design for the 40MHz MC68EC030" Cheers, Lee. . ___________________________________________________________ Yahoo! Messenger - NEW crystal clear PC to PC calling worldwide with voicemail http://uk.messenger.yahoo.com

21 years, 3 months

3
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Paging Jules Richardson

by jim＠g1jbg.co.uk

Jules, I've tried to send you a couple of messages off list re ASR33, but I'm not sure if you are receiving them. Jim Beacon Please see our website the " Vintage Communication Pages" at WWW.G1JBG.CO.UK

21 years, 3 months

2
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system 36 on eBay

by mbbrutman＠brutman.com

Michael wrote: >> I have code in that thing .. (Specifically the low level OS that the 36 emulator is running on top of.) > Is that one of the machines that uses System/38 CISC hardware? Eric It's actually an early version of the RISC processor used in the more modern AS/400/iSeries machines. The memory is fuzzy now, so I may have some details incorrect. It was around 1994 and the System 36 was long since gone, and we were deep in product development of the new RISC based AS/400s. One use of the partially developed machine was as a System 36 replacement - with an emulator running on top of the partial OS of the new machine we could make the appearance of a System 36, and at a much better speed at that. Remember that for the port to RISC IBM had to rewrite a good portion of the OS to accomodate the new processor and hardware architecture. The older CISC based AS/400s used a 48 bit processor. The new ones were using a 64 bit variant of the Power PC. I don't think that most of the customers for the Advanced 36 (as this box was called) were aware that they were running on a pretty advanced PowerPC based machine. It was a nice trick. Mike

21 years, 3 months

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Stuff I grabbed, stuff I missed...

by Arno_1983＠gmx.de

I think I have to pay a lot more attention to what I dig up... University cleaned out a lot of computer stuff, mainly Sun, some HP 9000. I was allowed to raid the junk box yesterday and got a good drive tray for my HP9000 (the SCSI cable was missing from the installed one). Also got quite a lot of sBus boards (FDDI, CDDI, Ethernet, ATM, framegrabbers, framebuffers), even some Creator UPA FBs, drive mounting brackets and cable kits for SS1/1+/2 enclosures. AUI adaptor cables for SS20 and Classic, AUI/Audio Splitters for SS10 / LX, TTY adaptor cables for IPC/IPX. Please enquire if you're interested in something (for pickup or S&H), I likely won't be needing the whole lot! There are also two SPARCclassics, about seven Ultra1-140 and one each SPARCstation 1, 1+ and 2 available; the SS1 comes with mg1 framebuffer and matching ECL monitor (which is a bit dim after all, sadly). I'll keep them locally (Erlangen/Nuremberg, Germany) so they are not threatened by trashing. Then again, I grabbed a MAGMA Serial 16 Breakout unit (connection box for a sBus card providing 16 serial ports), but couldn't find the actual card for it, even when I went through the box for the second time this morning. If anybody needs this unit or wants to get rid of the corresponding card, please let's get in touch! Max. idiocy factor was obviously reached when I bagged the two HP9000 EISA PSI cards (Dual-port Programmable Serial Interface J2815A, can do RS-232C/V24 or X.21/V11) but left all the proprietary cables in their sealed poly bags lying right next to them behind! Of course the whole pile was already gone when I realized what they were for. *repeatedly slaps forehead* If something can be done about this (by someone either having too much cables or too few cards) then I'm all ears as well. So long, yours sincerely -- Arno Kletzander Stud. Hilfskraft Informatik Sammlung Erlangen www.iser.uni-erlangen.de Geschenkt: 3 Monate GMX ProMail gratis + 3 Ausgaben stern gratis ++ Jetzt anmelden & testen ++ http://www.gmx.net/de/go/promail ++

21 years, 3 months

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OFFER: Industrial monitors

by richlist＠sias.us

I have two FIXED frequency monitors that I have been unable to service. Mostly due to lack of schematics. 1. 1989 version "MaxPC" brand built by Toshiba 21". Remove the plastic cover and it is encased in metal all around. EMI protection? Weighs a ton. One day many years ago I backed up monitor stand until the vert adjust screwdrive left in back crushed the vert adj pot to smithereens. I got a horz bright white line. I took the pieces and took a guess at value and discovered somthing else died also. Freq is about 48KHz. 2. SUN 20D10 monitor. has a daughter card with a bunch of ittty bitty caps on it that are reputed to have bad ESR that is causing the bad UNadjustable pincoushion. Daughtercard seems to be one of those parts hung in midair and the mother board assembled around it, THEN the montor assembled around THAT! Freq is about 70-110 Khz I have boxes still if you want them shipped. Location is Warminster PA (near Philly) Assume 80lbs and they might be less at weigh in. Rich

21 years, 3 months

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Two tubes

by leeedavison＠yahoo.co.uk

That should have read QQV03/20A. Lee. . ___________________________________________________________ Yahoo! Messenger - NEW crystal clear PC to PC calling worldwide with voicemail http://uk.messenger.yahoo.com

21 years, 3 months

1
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Two tubes

by leeedavison＠yahoo.co.uk

A pair of QQV02/20A dual anode beam tetrode valves. Suitable for VHF PA stage. Unused. Collect or postage from UK. Lee. . ___________________________________________________________ How much free photo storage do you get? Store your holiday snaps for FREE with Yahoo! Photos http://uk.photos.yahoo.com

21 years, 3 months

1
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"Pozidriv" [was Re: Tools (was: IBM 5155 analogue display fault]

by pete＠dunnington.u-net.com

On May 31 2005, 21:15, der Mouse wrote: > > I have a minimal tookit (flat blade, Phillips, Pozidriv, Torx, Allen > > keys) upstairs, [...] > > Which reminds me - I've seen this "Pozidriv" screw drive mentioned > elsewhere in this thread, as if it were a common type. Since there is > no screw drive type I know by that name, this leads me to wonder, what > is it? (It may be another name for one I know, or it may be one I > don't know but which is common in circles I've never moved in, or > perhaps I misread the references and it's not actually that common.) The URL Randy posted has a good picture. Pozidriv/Supadriv are similar to Philips, but the angles on the point of the driver are slightly different and the facets are ground flat in both directions, unlike Philips which are conical, which means that the driver grips the screw slightly better and both are less prone to wear. The intent is that when high turning force is applied, the driver won't ride out of the screw head, which happens with Philips screws. Another design feature is that the driver, if it's the correct size, is guaranteed to grip the screw, so you can pick up a screw with the driver and know it won't fall off while you're trying to insert it into a hole in an awkward place. Assuming the driver isn't excessively worn from being misused on Philips screws, of course :-) In practice, Pozidriv sizes are also slightly different from Philips so the screwdrivers are not interchangeable. They are widely used in Europe, almost to the exclusion of Philips screw heads. -- Pete Peter Turnbull Network Manager University of York

21 years, 3 months

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Intel UPP103 Cable

by rsnats＠bellsouth.net

I have a Intel MDS-800 and a UPP-103. I don't have the cable that connects the two units. Both units have DB-25 D-type connectors. Does anyone have a wiring diagram of this cable.

21 years, 3 months

1
0
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need a source of 7501 micros

by chrism3667＠yahoo.com

...as used in the Commodore Plus 4. Preferably new *lol*. Hey...you never know... __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

21 years, 3 months

1
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Tools

by dwight.elvey＠amd.com

>From: ard at p850ug1.demon.co.uk > >The Citroen BX Diesel (XUD engine) is even easier. Turn the engine to the >timing position and put 1 M8 bolt through a hole in the camshaft sprocket >(it screws into the cylinder head) and 2 through holes in the injection >pump sprocket (they screw into the block IIRC). Put a timing pin (an >Allen key will do) into the hole behind the starter motor so that it >slips into the hole in the flywheel. Remove the belt, fit a new one, >remove the pin and bolts, turn the engine 2 full turns by hand, then >check you can fit the bolts and pin back again. If so, it's correctly timed. > >-tony > Hi The Rover 2000 had two pins bolted to the engine. One pin held the flywheel while the other held the cam shaft. But then it was a chain and required a lot of disassembly to replace the chain. The main purpose was to hold things while one removed the cam shaft to install adjuster shims for the valve clearance. To make things a little more tricky, the same bolts that held the cam shaft bearings were also the head bolts :( Dwight

21 years, 3 months

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system 36 on eBay

by mbbrutman＠brutman.com

I have code in that thing .. (Specifically the low level OS that the 36 emulator is running on top of.) Mike

21 years, 3 months

2
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The Don Maslin Sofware Archive

by dwight.elvey＠amd.com

>From: "Randy McLaughlin" <cctalk at randy482.com> ---snip--- > >I've never considered "Don's archive" as personal property. Don always >listed it as the DynaSig archive and it was made up of public contributions. > Hi It isn't a legal question, it is a physical question. She has the archives and may do anything she wishes. Not much one can do. Dwight

21 years, 3 months

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fwd: Offer of DEC LQP-02 in Waltham, Mass.

by oldbear＠arctos.com

Forwarded to cctech list... > Date: Mon, 30 May 2005 14:26:09 -0700 (PDT) > From: LOIS PETERSON <deadeyed2 at yahoo.com> > Subject: OFFER: DEC printer model LQP02 Waltham > > We again OFFER a rare Digital Equpment Corporation > LQP02 wide-carriage daisy-wheel printer. > > If interested, please send your telephone number or > other quick-contact information. > > Lois & Roland Peterson > Waltham, Massachusetts

21 years, 3 months

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The Don Maslin Sofware Archive

by Watzman＠neo.rr.com

There are some aspects of your post which bother me. In particular: "Her manner with me was unsupportable; I made an agreement which kept her free from annoyance, and she will not honor her part." There was a "request", but not really an "agreement"; and she owes no one anything, nor do we have any right to expect any consideration from her. In approaching her, I think that the view that must be taken has to be based on: 1. This was Don's legacy 2. This was what Don would have wanted I think that any other approach is likely to come off as self-serving, and is unlikely to produce any positive outcome. I also think that "deluging her with requests" is likely to "piss her off", and risk creating a situation in which she says, ultimately, "I called a trash collector and had it all hauled away so that none of you would have any further reason to contact me about this". I don't feel that there is any way of getting through to her other than by a close personal friend. I don't think that anyone who she doesn't know personally is likely to be able to induce her to take any action whatsoever.

21 years, 3 months

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I-Bus SBC and Floppy drives

by doc＠mdrconsult.com

I have an I-Bus "Shark" model PICMG[0] processor board. This board takes a Pentium 90 or 100MHz processor, has 4 SIMM slots, and has IDE and floppy controller on the card. May or may not be ten years old, and is definitely not unique enough to be on-topic. However, I also noticed something in the BIOS I've *never* seen on an x86 system, including the rest of my PICMG processors. This board supports four floppy drives, 360K 5.25" to 2.88MB 3.5". My question is, does anyone know of any other post-286 PeeCee systems that support 4 drives without a CompatiCard or CatWeasel? Doc [0] PICMG is almost unknown in the desktop world, but it's a backplane setup used in industrial and telco environments. As far as I know, it's strictly x86.

21 years, 3 months

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Chicago: Cipher M990 9-track Pertec 1600/3200/6250

by Tim＠rikers.org

eBay find, not the seller or anything: <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5202187970> listed at $20 for pickup only in Chicago area. I'd recommend you ask him for the PC Pertec controller and cables which he should have if it was used on a win95 pc. I emailed him and confirmed that it does not have the scsi interface option. I'd sure like one if someone has one. ;-) CSC100 is the part number. Again, he does *not* have one on this drive. -- Tim Riker - http://rikers.org/ - TimR at Debian.org Embedded Linux Technologist BZFlag maintainer - http://BZFlag.org/ - for fun!

21 years, 3 months

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BYTE Magazines available

by dbetz＠xlisper.mv.com

I have the following issues of BYTE Magazine available: 1976: 3-12 1977: 2-12 1978: 1-12 1979: 1-2,4-7,9-12 1980: 1-7,9-12 1981: 1-7,9-12 1982: 1-7,9-12 1983: 1-12 1984: 1-12 1985: 1-2,5-11 1986: 1-12 1987: 1-4,6-12 1988: 1,3-10,12 1989: 1-9 1991: 2-9 In addition, I have a number of special issues like the IBM special issues. I have no idea what if anything these are worth. Mostly, I'm just trying to avoid throwing them in the trash. Of course, I'd love to trade them for interesting stuff. What would I like? I'm mostly interested in a working SBC6120 system (front panel not necessary). Another thing I've been looking for is a copy of the Bliss-32 reference manual. I used Bliss when I worked for DEC and liked some aspects of it but haven't been able to find a manual. They are located in southern New Hampshire.

21 years, 3 months

2
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Olivetti M-20 PCOS or other OS

by dwight.elvey＠amd.com

>From: "SP" <spedraja at ono.com> > >Hello. I own one Olivetti M-20 that I'm cleaning and checking. All appears >to go well but the diskette with the PCOS system is damaged. Someone dispose >of one operative copy of PCOS or another OS for this machine ? I would be >agreed for the eternity (uh... perhaps less time, but a lot sure). > >Thanks >Sergio Hi Sergio What type of disk drives does it have? We have the ability to create disk for the 320K drive but haven't had enough experience to do this for the 640K disk. If you have an AT level PC with a 360K drive, you may be able to create the boot disk your self. The PC does need to have a controller that writes FM format. Many of the newer PC didn't support FM since most PC's were only using MFM 360K or newer. The first track on the 340K disk is done in FM ( single density ) while all the rest are done in MFM ( double density ). Most M20's were shipped with memory cards that had 16K DRAMs. The motherboards usually had 128K of 64K chips. With the three memory cards, at 32K each, the normal configuration would be 224K. To run the CPM8000, you'd need to have a minimum of 256K. This would require having a memory card with 64K chips. I've modified my memory cards to use the 64K chips. To bring up CP/M-8000. Still, to make CP/M-8000 disks still requires writing the first track with FM data. PCOS runs fine on the 224K unless you want to run some of the developement tools like PASCAL that requires 384K as a minimum. Their BASIC runs fine in the 224K machines. Look at: ftp://ftp.groessler.org/pub/chris/olivetti_m20/ There you'll find some images for PCOS and tools to create disks. You can try the tool wrm20.com, that I wrote. If the controller you have is compatable with FM, you should be able to create the boot disk. I'm also told that the images are compatable with tools like 22disk but I've not confirmed this. Look at: http://www.cpm.z80.de/binary.html For the CP/M-8000 stuff. Worst case, I can send a floppy to you in the snail-mail. Anyway, let me know what kind of machine you have, like B&W or color, disk drives and RAM? Later Dwight

21 years, 3 months

2
1
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looking for early (interesting) PCs

by chrism3667＠yahoo.com

to name a few: Mindset PC, HP Vectra (8086 or 286), Televideo Personal-Mini and PM/286, Canon AS-100 and AS-200, Xerox 8/16, NEC APC, Victor 9000, etc. I concentrate on the semi-compatibles. Also looking for SOFTWARE, IBM compatible and semi-compatible versions alike. I have been looking for an early version of Microsoft Fortran for as long as I can remember. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

21 years, 3 months

2
1
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Need specs for IBM PC Convertible power supply

by dwight.elvey＠amd.com

>From: "Vintage Computer Festival" <vcf at siconic.com> > >On Fri, 27 May 2005, tom ponsford wrote: > >> >Urg! Thanks for the voltage specs but what about polarity? ;) >> > >> Well looking high and low over the adapter. I could not find ANY >> markings that would show the tip polarity. it might be on the jack inlet >> on the computer itself, which I don't have in front of me. For some >> reason I always though the tip polarity was on the inlet itself or was >> indicated by the color of the tip (or was that the size indicator?) . > >Didn't see any markings on the computer itself. > >> It's too late and past my bedtime for me to give cognizant answers :-) > >Can you just put a voltmeter to it in the morning and let me know? >Thanks! > Hi Sellam Finding the polarity is usually easy. Most setups connect the ground directly to the power leads. The positive lead would go through regulators and parts to the ground. So, unless your machine has a direct short, an ohmmeter should be all that is needed to determine the negative lead. Later Dwight

21 years, 3 months

2
1
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BYTE Magazines available

by Richard.Cini＠wachovia.com

I appreciate it. Thanks. ============================= Richard A. Cini, Jr. Director Wachovia Capital Finance 1133 Avenue of the Americas New York, NY 10036 W: 212-545-4402 F: 212-545-4589 -----Original Message----- From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of David Betz Sent: Tuesday, May 31, 2005 1:44 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: BYTE Magazines available The magazines are gone. Thanks for all of the interest! On May 31, 2005, at 11:13 AM, David Betz wrote: > I have the following issues of BYTE Magazine available: > > 1976: 3-12 > 1977: 2-12 > 1978: 1-12 > 1979: 1-2,4-7,9-12 > 1980: 1-7,9-12 > 1981: 1-7,9-12 > 1982: 1-7,9-12 > 1983: 1-12 > 1984: 1-12 > 1985: 1-2,5-11 > 1986: 1-12 > 1987: 1-4,6-12 > 1988: 1,3-10,12 > 1989: 1-9 > 1991: 2-9 > > In addition, I have a number of special issues like the IBM special > issues. > > I have no idea what if anything these are worth. Mostly, I'm just > trying to avoid throwing them in the trash. Of course, I'd love to > trade them for interesting stuff. What would I like? I'm mostly > interested in a working SBC6120 system (front panel not necessary). > Another thing I've been looking for is a copy of the Bliss-32 > reference manual. I used Bliss when I worked for DEC and liked some > aspects of it but haven't been able to find a manual. > > They are located in southern New Hampshire. >

21 years, 3 months

1
0
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Need NS MM5740AAE/N keyboard encoder

by vcf＠siconic.com

I tried replacing the dead National Semoconductor MM5740AAE/N keyboard encoder chip on this Datanetics keyboard with an MM5740AAC/N thinking the C might just be some minor revision or whatnot and shouldn't make a difference. Well, I'm not sure if there is some greater thing wrong with this computer, but the keys don't map properly: Key => 1 2 3 4 5 6 7 8 9 0 : - Chr -> R F ^ A I U Y M C O S K D'oh! I can't find any data for this chip. Does anyone know if in fact the AAC is different from the AAN? Anyone got data? Anyone got a spare MM5740AAE/N? -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

21 years, 3 months

5
5
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Remembering RAMAC

by aek＠bitsavers.org

a few choice quotes from the article: "disks were coated with magnetic iron oxide paint, similar to that on the Golden Gate Bridge." Ah.. now I know where to get the stuff to fix the head crashes on my 2315 packs. "Before the advent of magnetic disk storage, computers stored their information on rolls of magnetic tape or coded punch cards. Retrieving information could take hours or days." Or magnetic drums, which did NOT have the access time problems of tape or cards (but, unfortunately weren't an IBM invention) " he has been pushing to create a museum at 99 Notre Dame Ave. He may get his wish. The San Jose City Council recently passed a resolution promising to begin discussions around the idea." You can look at the success and speed the "little city that could" has had with doing anything with the PERHAM and CHAC collections for what is going to happen with this idea.

21 years, 3 months

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Need Digital VT102 and Hewlett-Packard A1099B Keyboards

by david_comley＠yahoo.com

I am looking out for a couple of keyboards for project systems I am assembling. I need a VT102 keyboard (the original DEC one), plus an HPIL keyboard for a 9000/300. I think the HP keyboard carries the designation A1099B. If anyone has either of these items they'd be willing to part with please let me know. Regards, Dave david_comley at yahoo.com __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

21 years, 3 months

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11/23 9trk RM03 in Huntsville

by aek＠bitsavers.org

I noticed an RM03 in a ebay posting, so I asked if it was for sale. Here's the reply. Obviously this will only be of interest in pickup range. If someone is serious about this, I'll forward you his email adr. === You asked: "are you going to be selling the CDC 9762 that the generator is sitting on?" Boy... you've opened a can of worms. If you will send me your email address then I will send pictures of my 1st home computer... PDP-11/23 with 9 track tape.. Qbus to Unibus converter to drive the disk as an RM-03 etc... My daughter has it posted on the local BB at her company and I've given them until next Friday to respond. Then the whole ball-of-PDP wax is going to go on ebay.. If you are interested in all or just the disk drive we can discuss it by private email since its not been comitted to ebay yet... Best regards

21 years, 3 months

2
1
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Don Maslin's archive

by aek＠bitsavers.org

> These items can be duplicated without any destruction of the originals. This may or may not be true depending on the condition of the media. Floppies suffer the same 'sticky shed' problems that magnetic tape does. Depending on the condition of the binder, I have seen floppies stripped to the clear mylar in little concentric rings when they were tried.

21 years, 3 months

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OT: Couple of google groups questions

by julesrichardsonuk＠yahoo.co.uk

Now that those of us in the UK are forced to use the new google groups interface to their archive... 1) How do I see how active a group is or what groups exist in a particular hierarchy? (e.g. I used to be able to stick "comp.sys.sun" into the search field and it'd show me both that hierarchy and group activity, which was handy when deciding where to post) 2) Are full email addresses available to view by registered users? It used to handy being able to try and contact someone from x years ago who had knowledge of something I wanted details on. Now Google seem to be masking them all though... I'll send these two to Google themselves of course, but as you US guys have been stuck with the new interface for months maybe you already have answers... 3) Is anyone else archiving usenet or do Google have sole control? cheers Jules

21 years, 3 months

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Neon bulb logic elements

by leeedavison＠yahoo.co.uk

I'm (far too) slowly clearing through umpteen years of accumulated quality second user parts getting ready to move house. While sorting through one box I found one of my first completed projects, a neon heads/tails unit. I don't remember where I got the circuit from, I do remember building and testing it on my bed before I re-built it into it's box. Sometimes I'm suprised I survived those early experiments. For anyone interested it's written up here .. http://www.themotionstore.com/leeedavison/misc/first/index.html http://members.lycos.co.uk/leeedavison/misc/first/index.html .. remember, don't try this at home. Lee. . ___________________________________________________________ Yahoo! Messenger - NEW crystal clear PC to PC calling worldwide with voicemail http://uk.messenger.yahoo.com

21 years, 3 months

1
0
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Dayton report, anyone?

by news＠computercollector.com

Would like to hear it was this year, vintage-computer-wise.... ----------------------------------------- Evan Koblentz's personal homepage: http://www.snarc.net Also see http://groups.yahoo.com/group/midatlanticretro/ *** Tell your friends about the (free!) Computer Collector Newsletter - 730 readers and no spam / Publishes every Monday / Write for us! - Mainframes to videogames, hardware and software, we cover it all - W: http://news.computercollector.com E: news at computercollector.com

21 years, 3 months

2
2
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Northstar Advantage - Demo Diagnostic Disk found

by john_a_s2004＠hotmail.com

Hi, I have now found and successfully copied the 'Demo/Diagnostic' disk for the NorthStar Advantage. This is a hard sector floppy, so consequentially I don't know how to back it up to a PC and e-mail it. If anyone wants a copy and can provide a blank hard sector floppy (5.25" 10 sector) please e-mail for address details. Regards, John UK _________________________________________________________________ It's fast, it's easy and it's free. Get MSN Messenger 7.0 today! http://messenger.msn.co.uk

21 years, 3 months

2
1
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ROM Adapter Board

by swtpc6800＠comcast.net

I have made several ROM replacement sockets for the masked programmed Motorola 6800 MIKBUG ROM used in the SWTPC 6800 system. The MCM6830 ROM does not have a EPROM equivalent. The replacement board has a 74LS20 (to map the 4 enables) and a 2716 EPROM. The challenge was to find pins that could be soldered into the ROM board that would plug into the existing socket on the CPU board. I bought several types of pins and headers from surplus stores and Digi-Key. I have determined that capacitor leads are the best solution. Many capacitor lead are made of steel and are much stiffer than resistor leads. The ones I get >from 0.1 uf bypass caps are just the right size for machine tooled sockets. I can make a lower profile adapter then if I use header pins. I describe the process (with pictures) in the Users Guide on this page. http://www.swtpc.com/mholley/ROM_Emulator/ROM_Index.htm Michael Holley

21 years, 3 months

1
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Looking for Comart CRAM-64 switch settings...

by james＠attfield.co.uk

... or manual for same (or CRAM-48) to get my Cromemco Z2 back on line. All information gratefully appreciated. Jim Attfield

21 years, 3 months

1
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31 volumes VMS documentation "Gray wall" available for shipping in Kansas City

by cmcfadden5＠comcast.net

31 volumes VMS 5.0 and release 5.2 documentation in Gray DEC loosleaf binders also System managers guide and Guide to VAX C You pay shipping I'll provide the boxes. Currently in 3 boxes. I can ship without the binders if you want smaller boxes. Pretty heavy. Mike c m c f a d d e n 5 a t c o m c a s t d o t n e t

21 years, 3 months

1
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VCM Stuff for Sale

by marvin＠rain.org

I've posted (and will continue to post) a number of things I don't need on VCM rather than EBay. Some other people have also posted some interesting items. Some of the latest include plastic ready light covers numbered 0 - 7 and 1 - 5 for (I think) the DEC RLO2 disk drive. http://www.vintagecomputermarketplace.com/

21 years, 3 months

1
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test-drb