January 2002 - test-drb@ccmp.vtda.org

by pat＠purdueriots.com

I just got a pair of SSDD 8" Control Data disk drives, and was wondering if anyone had any information about them. Here's the info I can figure out from the drive: 1) Spindle motor has a 3 pin molex connector, is rated 120V, 0.77A at 60Hz 2) 2pin next to a 4pin power connector 'J7' on the logic board 3) 50pin data connector (Can't be scsi, can it?) 4) empty 16pin DIP socket 5) 8 switch DIP switch "Magnetic Peripherals Inc. a subsidiary of CONTROL DATA CORPORATION" label with 120V ratings: Equip. Ident. No. BK8A2A (could be BR8A2A) Series Code 09 Part Number 75744025 Serial Number 127888 Label on opposite side: Flexible Diskette Driver Educational Computer Corp Orlando, Floriday MFG PART NO: 910024000-009 MFG SERIAL NO: 127888 There's a bunch more numbers stamped on the drive pieces, but I'm guessing that they won't be of much use unless I want to build a new drive >from scratch (after getting in a time machine to go back 20-25 years). Thanks for the help! -- Pat

23 years, 6 months

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Creating PDF's from scanned image files

by mranalog＠attbi.com

I'm getting closer to a real PDF file!!! <<<<GROUP 4 FAX TIFF>>>>>>> First, here is my notes on converting an JPG image to a G4 TIF image in Windows: ------ Converting to G4 TIF -------------- In Win95/98/NT, path to follow is: Start -> Programs -> Accessories -> Imaging In Win95, the program is called Wang Imaging and is usually found in c:\windows\wangimg.exe. In Win 98, the program is called Kodak Imaging and is usually found in c:\windows\kodakimg.exe. In Win NT, the program is called Wang Imaging and is usually found in c:\Program Files\Windows NT\Accessories\ImageVue\wangimg.exe. Now since I'm running Win98, the following is dealing with Kodak Imaging. After kodakimg.exe starts I load a .JPG file: File -> Open In my example the file is 8.5x11 300dpi 8bit(256 shades) grayscale. Then I copy the file to the scrapbook: Edit -> Copy Page Then I create a NEW image with G4 compression: File -> New *File Type tab - check "TIFF document(TIFF)" *Compression tab - Pull down "Compression" and select "CCITT Group 4 (2d) fax". (This changes the Color tab selection to "Black and White"). *Resolution tab - I set pull down "Resolution" to "300 x 300 dpi". *Size tab - Defaults to 8.5x11 Click "OK" Then I paste the scrapbook image into the NEW image: Edit -> Paste The 8bit gray image is now a bitmap. You can check the image's properties at any time: Page -> Properties Then just save the file: File -> Save As Set the filename and click "Save" --------------------------------------------------- This converted a 2,851KB 8bit JPEG to a 448KB bitmap TIFF file. I can also scan and create multi-page TIFF files with this program. <<<<PDF FILE>>>>>>> Hans turned me onto IMG2PDF for windows (demo version on the Web). But I must have screwed up the installation. It produced a 6 page PDF file but the pages were all blank and the file was 4K in size!! Now I downloaded the demo version of TIF2PDF from the same company (Excel Info Tech, Inc.). The program installed fine and it created a beautiful 6 page PDF file that is 1,669K (Much better that 15MB). The problem is that the demo version inserts "Copyright of Excel Info Tech, Inc." in red across each page of the PDF!!! And for some reason it insert the pages in the order 2,3,4,5,1,6. If I create a three page PDF, it inserts the pages in the order 2,1,3. Regards, --Doug ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://dcoward.best.vwh.net/analog Analogrechner, calculateur analogique, calcolatore analogico, analoogrekenaar, komputer analogowy, analog bilgisayar, kampiutere ghiyasi, analoge computer. =========================================

23 years, 6 months

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Apple disk -> MSDOS

by mark_k＠totalise.co.uk

Hi, On Tue, 8 Jan 2002 Fred Cisin wrote: > Apple Turnover, and it's even theoretically possible to do it with the > CopyII Option board (if you are willing to write a program comparable to > the Apple OS file system. Same with Catweasel - theoretical possibility, > but significant software needed but not available. See http://www.ece.nwu.edu/~cbachman/apple.html Using a Copy II Option Board (or Deluxe Option Board) and its supplied software you can create an image file of Apple II disks. Then use the program on that page convert to a plain disk image. [About the Option Board (earlier non-ASIC model): I'll volunteer to trace the PCB of one of these as part of an effort to figure out exactly how it works. But I only have Deluxe Option Board here at the moment, which uses an ASIC.] There are free programs (source available) for extracting files from and otherwise manipulating Apple disk images; one is AFID. > If you have an Amiga, and are willing to buy or write significant > software, it can (in theory) do both Apple and PC. Free software already exists on the Amiga for reading Apple disks, and transparently reading and writing MS-DOS disks. For reading Apple disks, use the disk2file program included in this archive (which also includes an Amiga executable of the AFID program): http://us.aminet.net/pub/aminet/misc/emu/Apple2000v13.readme http://us.aminet.net/pub/aminet/misc/emu/Apple2000v13.lha Versions 2.04 and later of the Amiga OS come with CrossDOS, which allows PC (and Atari ST) floppies to be accessed transparently. A comparable package which comes with source code is MSH: http://us.aminet.net/pub/aminet/misc/emu/msh_156.readme http://us.aminet.net/pub/aminet/misc/emu/msh_156.lha > > I have a CompatiCard I and Uniform, and I still have > > Those will be nice for doing MFM diskettes. No help at all for GCR > (Apple and Commodore). An Amiga with 5.25" drive can also read Commodore 1541-type disks. One free package (which from memory includes source code) requires that the disk motor be slowed down slightly, from 300rpm to about 280 (easy enough on Commodore A1020 5.25" drives, and non-Commodore disks are still readable at that speed). http://us.aminet.net/pub/aminet/misc/emu/1541.readme http://us.aminet.net/pub/aminet/misc/emu/1541.lha All in all, an old Amiga 500 or whatever costing about US$10 can be a good investment if you need to read "strange" disk formats. An Amiga 5.25" drive should cost about the same or a little more. -- Mark

23 years, 6 months

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OT? Apple Stylewriter problems (longish)

by CLeyson＠aol.com

www.rohm.com/products/databook/tr/pdf/2sb1184.pdf for 2SB1243 data sheet. Same device, different package.

23 years, 6 months

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Screeching monitor

by alex＠linuxhacker.org

Hi, I've just been having a go at fixing an old Acorn AKF40 monitor (a few months shy of ten years old I'm afraid), which makes a screeching sound and fails to provide any display when powered up. Not having done anything like this before (I generally stick to low voltage digital stuff) I could do with a little advice. I checked for bad connections and dry joints first, then started going around with a multimeter looking for open resistors, shorted caps etc. I soon located a fault- a power resistor with a discoloured area on it which is completely open circuit. It's located somewhere in the switch mode power supply. What do you think this resistor is likely to be for, and is its failure consistent with the symptoms I'm seeing, or should I be looking for other failed parts too? Also, it says on it: 4.7 [ohm symbol] K 7W Would I be right in thinking that that means 4K7 rated to 7W? -- ------------ Alex Holden - http://www.linuxhacker.org ------------ If it doesn't work, you're not hitting it with a big enough hammer

23 years, 6 months

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Free: 3B2 OS tapes

by csmith＠amdocs.com

> -----Original Message----- > From: Bill Bradford [mailto:mrbill@mrbill.net] > I've got two QIC tapes here: > Free for the cost of postage. Surely someone has a 3b2 and needs > an OS.. Yep, but my 3B2 has a floppy drive and no tape. :/ Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

23 years, 6 months

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Please unsubscribe; I can't

by doc＠mdrconsult.com

Please disregard my post. Apparently screaming loudly at upper-level RoadRunner reps works wonders. We now have a DNS record, and since I can get mail on the mdrconsult account from Yahoo, it looks like they got it done and propagated in less than an hour. Still, overall, inexcusable. Doc

23 years, 6 months

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What to do with an empty BA23

by csmith＠amdocs.com

> -----Original Message----- > From: Matt London [mailto:classiccmp@knm.yi.org] > Ahh - I fear I will have to do the same for my gf, but I plan on > emigrating to canada to be with her anyway, so I won't be able to take > most of my kit. When that time comes, I'm sure classiccmp > will be able to > find good homes, unless I have to resort to ePay to get some > money for the > move :&/ Have you tried the "cute, furry animal" trick from the FAQ? :) Regards, Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

23 years, 6 months

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Prophylactic replacement of electrolytic capacitors?

by pete＠dunnington.u-net.com

On Jan 14, 9:45, Jerome Fine wrote: > >Pete Turnbull wrote: > > > >On Jan 13, 21:27, Louis Schulman wrote: > > > Old computer power supplies generally have big old electrolytic > > > capacitors. When these go bad, they can > > > cause real problems, and damage other components. > > > The literature indicates that many of these only have a working life of > > > 2000 hrs., or a shelf life of ten years. > > > Obviously, this will be exceeded in old computers. > > I think you may have lost a digit off the working life, Louis, at least if > > you're referring to the sort of electrolytics found in PSUs :-) > > Jerome Fine replies: > > I was hoping you would answer this question. Thank you! Of all the > hobby users around here, it seems that you have the most experience > with repairs. Oh, I don't know about that, particularly for older equipment there are a few others here who can outdo me, I think . > Now, that lost digit for the working life, I presume you mean that 20,000 > hours is more reasonable? Would that vary if the usage was 24/7 (on all > the time for the whole 20,000 hours) as opposed to being on for 10 hours > continuous once a week on average, i.e. about 50 times a year or 500 > hours a year? 20,000 hours is the top end of the range, really. 2000 is very low, though. No, 24/7 versus several hours on different occasions won't make much difference. Temperature makes a difference, becasue high temperatures make a cap dry out faster, as does the ripple current, because of internal heating (high current or high ESR). > The other MUCH BIGGER question for the stuff most of us tend to work > with is shelf life. That was estimated at 10 years. What is a reasonable > estimate? Also, more specifically, I have a number of BA23/BA123 boxes > which are about the only PSU I am concerned about for the long term. > Most are probably more than ten years old already - as far as shelf life > is concerned. Is a PSU (in general an very specifically a BA23/BA123 > box) more likely to have a longer shelf life of used every so often - any > if so, how often - once a week, month, year, decade? That will make a difference, as electrolytics tend to degrade over time. The insulator is really a thin layer of oxide on the metal foil inside, and if left sitting unused, that may dissolve. Hence the low shelf life. That's why you run long-unused electrolytics at a low voltage for a while, to reform the oxide layer. Running the PSU every so often -- once or twice a year -- will prevent that happening. With a linear supply, running it at low voltage is not too difficult -- if there's no variac handy to reduce the voltage, a low wattage (but mains voltage!) light bulb in series is a good idea. That's not a good idea with switchers, because they just try to draw more current instead, which is often worse. The ideal solution is to remove the caps and run them on a current-limited bench supply, gradually winding it up from a low voltage to the rated voltage of the capacitor. The PSUs in BA23/123 (almost all QBus machines, in fact) are switchers, BTW. > Could shelf life of some PSU also be as long as 30 years? Yes, it could, if stored under optimum conditions (but I confess I'm not sure what "optimum" would mean -- probably not too hot and dry, but not damp either) and started up periodically to make sure the caps reform. However, a blown electrolytic is easy to replace and often not hard to spot, because there's often a bulge or even a hole in the end! Or in extreme cases, an empty can where the capacitor used to be. A few years ago, I needed a non-polar electrolytic to fix an Atari monitor. The nearest equivalent I could find was the same value and voltage but physically much smaller than the original. The ripple current rating wasn't very high, either, but I didn't know what the original was rated for, so I tried it anyway. The monitor ran fine with the case off for about ten minutes, then there was a loud BANG! and small pieces of fluff floated down from the ceiling. Apparently the ripple current rating wasn't high enough :-) I replaced that one with a polyester cap in the end. -- Pete Peter Turnbull Network Manager University of York

23 years, 6 months

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Free Stuff

by charlesleecourtney＠yahoo.com

Hi all, The following are free for local pickup only (Menlo Park CA) FCFS: HP150 (original touchscreen), w/2225 printer (HP-IB, that was a mistake on my part!). Las worked when powered up several years ago. 2xDEC Pro-350s with monitors. Unknown status. 2xHP9000 840s - one with CPU and video only, 2nd with couple I/O cards. Unknown status. Thanks! Lee Courtney __________________________________________________ Do You Yahoo!? Send FREE video emails in Yahoo! Mail! http://promo.yahoo.com/videomail/

23 years, 6 months

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Tallgrass Technologies TG-1140

by doc＠mdrconsult.com

Anybody know anything about a Tallgrass Technologies TG-1140 Tape Storage System? Apparently takes 40MB cartridge tapes. The guy who has it thinks it was built about 1988. I don't have access to it, so that's all the info I have. Yeah, I know. Tony Duell has all the manuals.... :^) Doc

23 years, 6 months

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Prophylactic replacement of electrolytic capacitors?

by pete＠dunnington.u-net.com

On Jan 14, 9:39, Gary Hildebrand wrote: > IMHO, it depends mostly on who made the electrolytics. I have large > "computer grade" electrolytics from the 60's, salvaged from Ampex VTR's > that are still 100%, and have never failed in over 30 years. Not unusual... > OTOH, the cheap electrolytics found in consumer grade electronics seem > to dry out and fail on a yeary or biannual basis. One of the worst > failure rates I've seen is the teeny tiny 160VDC electrolytics; I just > replace then no matter what and usually that cures the problems. ...and also not unusual. I've seen a batch of Pentium motherboards that had a stack of small cheap electrolytics right beside/under the Slot1 processor -- and all dried out and failed within a few months. > The best way to check those #$%#$%^# caps is to use an ESR meter. And > only then should yo buckshot them. And replace them with good grade > Spraggue or CDE if possible. I've had mixed to poor resutls with > Nichion, or other cheap Japanese caps sold by MCM Electronics. > > Gary Hildebrand > -- Pete Peter Turnbull Network Manager University of York

23 years, 6 months

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Compaq LTE 5000 series, slightly OT (was: Re: Xircom NICs (wa s RE: OT: DELL SUCKS! Re: .... ))

by DAW＠yalepress3.unipress.yale.edu

! > While not quite yet a classic, one of my more favorite ! > series of laptops is the Compaq LTE 5000. It supported ! > a total of 4 pcmcia cards when it was used with a ! > docking station. These were truly unique machines IMHO, ! > and set the standards for removable cdrom and floppy ! > drives in future laptop systems. I don't know of any ! > other manufacturer at the time who offered a ! > machine with similar features. Sounds like my DockStation II for IBM Think Pads. That sucker was big, and at least half made of metal. It added 2 more PCMCIA slots, 2 ISA (or PCI) slots, included a special SCSI CD-ROM (Kodak Pkoto-CD compatible!), a full size SCSI expansion bay, an high density 50-pin SCSI connector on the back, stereo speakers, PS/2 mouse & KB connectors, printer, serial, video, audio in/out, external floppy connector... Works great with my 760EL... --- David A Woyciesjes --- C & IS Support Specialist --- Yale University Press --- mailto:david.woyciesjes@yale.edu --- (203) 432-0953 --- ICQ # - 905818

23 years, 6 months

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Free VAX 11/750 (Dallas)

by mrbill＠mrbill.net

Free 11/750 for pickup near Dallas. Please contact Alan directly if interested. Bill ----- Forwarded message from Alan Andrews <alan(a)tieless.com> ----- Subject: Re: VAX 11/750 From: Alan Andrews <alan(a)tieless.com> To: Bill Bradford <mrbill(a)mrbill.net> Date: 13 Jan 2002 13:59:55 -0600 On Sun, Jan 13, 2002 at 06:25:48AM -0600, Alan Andrews wrote: > > I know it's not a PDP 11, but I have a VAX 11/750 that's looking for a > > good home. If you know anyone interested, please pass on my email > > address. I'm in Frisco, about 20 minutes north of downtown Dallas. The 11/750 has System Industries hard drives (2 450meg and 1 350meg), disk pack, tape drive, and a DEC remote diagnostic card. I got it from the company that used it for their accounting system before switching to a client/server system in the early 90's. It's been stored in my garage for about five years. I know some of it's history, and it's in good shape, although it hasn't been turned on in ten years. It's free to a good home. ----- End forwarded message ----- -- Bill Bradford mrbill(a)mrbill.net Austin, TX

23 years, 6 months

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The STC ZEBRA and CPU meters

by dpeschel＠eskimo.com

Thread crossing alert... Since the ZEBRA used a drum for storage, most instructions had to wait for the drum to rotate into position, so one instruction takes a variable amount of time. And so the computer had a moving-needle efficiency meter on the front panel, which presumably integrated a series of pulses (similar to the circuit Tony described earlier). Or I suppose it could have divided the rate of instruction execution by the rate of drum rotation (since there was a timing track on the drum anyway). 100% efficiency was attainable but only by simple programs such as a parity check of the drum. It also had a telephone dial, sense switches, the usual memory-tweaking switches, and a register display. In the second-generation (transistor) machine, the register display was a CRT. In the first-generation (tube) machine the register display was a bunch of Magic Eye units IIRC. -- Derek

23 years, 6 months

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Prophylactic replacement of electrolytic capacitors?

by pete＠dunnington.u-net.com

On Jan 13, 21:27, Louis Schulman wrote: > Old computer power supplies generally have big old electrolytic capacitors. When these go bad, they can > cause real problems, and damage other components. > > The literature indicates that many of these only have a working life of 2000 hrs., or a shelf life of ten years. > Obviously, this will be exceeded in old computers. I think you may have lost a digit off the working life, Louis, at least if you're referring to the sort of electrolytics found in PSUs :-) > So, should these be replaced if they exceed a certain age? If it ain't broke, don't fix it. As always, there's an exception to prove the rule. If one of a pair goes, it may be worth replacing both to get the values to match. Or in some PSUs, if one or more fails, they may all have got too hot or dried out, and at least for small ones (relatively inexpensive), I tend to replace the lot. In any case, check the others, they may be on their way to join it. The working life is an estimate based on mean time between failures (MTBF). All this says is that for a large sample, it is statistically likely that a certain proprtion will fail in a certain time. Variation can be enormous. > For the screw terminal type, is it necessary to > use "computer grade" capacitors, which can be fairly expensive? Depends. The more expensive ones may differ in a few ways: -- lower ESR and/or higher ripple current tolerance. This means they won't waste so much energy (and heat up) if used in a PSU delivering a high current. -- higher temperature rating. PSUs often get rather warm, and the higher temperature rating makes them less prone to drying out. -- longer working life (related to temperature and other factors). If one can't find the right value in the right > size package, how much extra capacitance is acceptable? Electrolytics often have a wide manufacturing tolerance. -20%+50% is still not unusual. If it's just a filter capacitor I'd say up to 2x is acceptable. The real issue is likely to be cost. Also bear in mind that a capacitor of the same size but a higher capacitance may have other differences, like ripple current rating. I recently replaced a pair of 7700mfd caps in a DEC PSU; I could only get 10000mfd in the right size. In capacitor terms, that's close enough to be considered a match. > And any higher working voltage rating is OK? Yes. -- Pete Peter Turnbull Network Manager University of York

23 years, 6 months

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Atari games in limestone cavern

by Adrian.Graham＠corporatemicrosystems.com

Thanks folks :) > -----Original Message----- > From: Michael Nadeau [mailto:menadeau@mediaone.net] > Sent: 11 January 2002 23:54 > To: classiccmp(a)classiccmp.org > Subject: Re: Atari games in limestone cavern > > > It's O'Shea Ltd. at www.oshealtd.com. > > --Mike > > Michael Nadeau > Editor/Publisher > Classic Tech, the Vintage Computing Resource > www.classictechpub.com > 603-893-2379 > ----- Original Message ----- > From: "Adrian Graham" <witchy(a)binarydinosaurs.co.uk> > To: <classiccmp(a)classiccmp.org> > Sent: Friday, January 11, 2002 6:45 PM > Subject: Atari games in limestone cavern > > > > Odd subject I know, but sometime last year there was a > story of a guy in > > California (ish) who had 2 million Atari 2600/7800 games in a cavern > > somewhere and he was selling them for $2 a pop..... > > > > Anyone got a link to him? > > > > also, anyone got a spare boxed Magnavox Oddysey they'd like > to pass on > > to a UK computer museum? :) I'm talking money > here....though donations > > are always welcome! > > > > -- > > witchy/adrian > > www.binarydinosaurs.co.uk - the online computer museum > > www.snakebiteandblack.co.uk - monthly gothic shenanigans > > Linux Powered! > > > > >

23 years, 6 months

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AIM65 RAM - Help?

by mhstein＠canada.com

Does anybody have a schematic or at least the DIP switch settings for a late model AIM65 with the two 28-pin RAM/EPROM sockets (not 8 x 2114)? Help would be greatly appreciated; thanks. mike

23 years, 6 months

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Mac IIci

by Huw.Davies＠kerberos.davies.net.au

At 01:24 AM 14/01/2002 -0500, Boatman on the River of Suck wrote: >But A/UX sucks humongous hairy sweaty donkey balls. Them's fighting words :-) My first Unix workstation was a Mac IIcx running A/UX version 1.something. Given what Apple was trying to achieve this wasn't a bad first effort. Version 2 was more than usable, if you wanted you could hide most of Unix behind a Mac interface (sounds a lot like OS X to me :-). I never upgraded to A/UX version 3 (by this stage I'd moved the Mac home and had upgraded to a Personal DECstation). In all the years of hacking with the Mac I don't recall ever crashing A/UX and after a while there were lots of standard Unix applications ported across. I must admit I stopped using the finder and just started X11 but that was a personal preference. Huw Davies | e-mail: Huw.Davies(a)kerberos.davies.net.au | "If God had wanted soccer played in the | air, the sky would be painted green"

23 years, 6 months

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Mac IIci

by mythtech＠Mac.com

>Can I use my 9 pin parity simms from my old 386? The parity bits are >just ignored right? If so, then I can drop 32megs into it. I just scanned apple's TIL, and it looks as though Parity chips are ok on the IIci. I base this off an article discussing the fact that it needs FPM memory 80ns or faster (the article indicates that pretty much all 30 pin chips 80ns or faster will be FPM). It lists a few part numbers for ram upgrades offered by apple... two of them are Parity chip packages. So if apple is telling you that those are available as upgrades for the IIci, I have to assume parity memory will be just fine. And the IIci will handle a max of 128mb (8 - 16mb chips). You must install RAM in groups of 4 however (and I am fairly sure all ram in a grouped bank must be the same type, so either all parity, or all non parity) -chris <http://www.mythtech.net>

23 years, 6 months

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Mac IIci

by mythtech＠Mac.com

>It should be happy with parity. Note that some unlucky people have ended >up with a less common variant of the IIci that *requires* parity RAM. To >check if you have one of these units, look for the 'parity' label on the >motherboard and see if there is a chip there. If it is, hope you have >parity RAM on hand, because that unit will not work without it. Fortunately, >the vast preponderance of IIcis don't care what type of RAM they get. There is a similar build of the IIfx... I saw a tech note on it while perusing the TIL earlier... it seemed to imply that it was done for some government spec reason, and was only issued to government sales... but that was just implied, not actually stated, so who knows if they were released to the public as well (or if some of those government ones made it into the private sector) -chris <http://www.mythtech.net>

23 years, 6 months

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Mac IIci

by mythtech＠Mac.com

>It is also worth noting that with a full 128MB installed, the on-boot >RAM test takes a considerable amount of time, something like over two >minutes YIKES! Is the disable startup ram test option in the memory control panel as early as 7.6? or did it first appear in 8.0? (7.6.1 is the latest the IIci can handle... to check for the disable feature, open the memory control panel while holding down option, an extra choice will appear at the bottom allowing you to disable the startup ram test) -chris <http://www.mythtech.net>

23 years, 6 months

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Mac IIci

by mythtech＠Mac.com

>Does anyone know what the maximum memory you can put in a IIcx (I suspect >that >the answer is the same as a IIci). I've got a IIcx that I paid far too >much for >when it was new (say $10K) and it's only got 8Mb. If I could upgrade to >more memory >it might be worthwhile turning it on again and running A/UX (this >corresponded to >about $3K of the cost with another $2.5K being the 300Mb SCSI disk drive). 128mb For this and other bits of Mac hardware info, go to the souce and check Apple's spec list at <http://www.info.apple.com/applespec/applespec.taf>. -chris <http://www.mythtech.net>

23 years, 6 months

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Ugly Computers (Was: RE: Appropritate comic strip....)

by mythtech＠Mac.com

>It's a pity that Apple didn't decide to have wireless keyboard and mouse >for the new iMAC. That was my personal only complaint with the new iMac. If they had a wireless keyboard with built in track pad... I would have considered it perfect. (Despite that ommision, I still want one) But I figured I was just being too picky... but while sitting at my parents house this evening, I was talking about the new iMac, and my Mother of all people piped up and said they should have given it a wireless keyboard. Her only look at it was the Time magazine article, her complaint was, it was perfect for the end table, except for the "tangle of wires" needed for the keyboard and mouse. So if my mother could see this as a problem, why couldn't Jobs? -chris <http://www.mythtech.net>

23 years, 6 months

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Mac IIci

by mythtech＠Mac.com

>It is uses a 25mhz Motorola 68030 processor. What would be the >approximate Intel/PC equivalent? The 386DX-25? The 486DX-25? faster, >slower, what? I don't have much Mac experience at all. I own a Plus, >but after cleaning it, I haven't done anything with it but let it sit, >mainly because of the silly 800K drives. The 68030 and 68040 were roughly equivelent to 80386 and 80486 (respectively). Clock speed to Clock speed. There didn't start to be major differences until the PPC chip line. But frankly, that is just "rough analogy" as what you run will make huge differences in performance. The only thing that can be tough about the IIci is that is uses 30pin non parity simms, which are starting to be harder and harder to find inexpensively. The IIci *might* be able to work with parity simms, not sure (early macs could NOT, but some of the later ones IIRC could use parity or non parity) >It has a Radius video card, but unfortunately, the Radius monitor got >sold separately. It was a "Pivot" monitor. I pulled the monitor of the >nonfunctioning IIcx and the ci boots fine, and is running System 7.1. >How much should I offer? The IIci has a built in video card as well. You can use a standard Apple RGB monitor with it, or get an RGB to VGA adaptor (or I can send you the pinouts for making a good one), and use any VGA or SVGA monitor. As far as what to offer... as little as you can get away with. The machine is decent, but at this point, low end PPCs are winding up in dumpsters. So unless you WANT the IIci compared to you just want A useable mac... I wouldn't pay much more than about $10. -chris <http://www.mythtech.net>

23 years, 6 months

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Does anyone have details about the STC ZEBRA? Tony?

by mythtech＠Mac.com

>The Zebra >systems that ran Pick were produced by General Automation, not STC. Unless >of course, they were rebadged somehow. I have NO idea who made the Zebras I had. I just always remembered the name of the machine was Zebra (that and for the last month or so, I have been tripping over the manuals since they migrated from their storage shelf to the floor next to my desk for lack of room elsewhere) I DO know that they ran Pick, so if STC didn't make a Pick version of the Zebra but General Automation did, then I would have to say they were probably General Automation machines. >Well the '59 version is 6' high by 9' by 2', plus >a desk for the operator console and i/o equipment. WOA... definitely NOT the machines I had. I don't remember the exact size, but they were luggable size (large desktop PCish). Probably about 8 or 10 inches high, 18 inches or so wide, and about 36 inches long. Don't remember the weight, but I carried them to the trash, so they were manageable. Both of mine had been stacked on top of each other, and sat on a metal desk. -chris <http://www.mythtech.net>

23 years, 6 months

1
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WTB: TMS 4060 RAM or Equivalent

by CLeyson＠aol.com

Try Dial Electronics http://www.dialelec.com. They have TMS4060 in stock TMS4060JDL 3-4 WEEKS CALL TMS4060JL STOCK ?8.4999 $12.74985 TMS4060NL 3-4 WEEKS ?1.1199 $1.67985 Note: J suffix is ceramic package, N for plastic. Best Regards Chris Leyson

23 years, 6 months

1
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test - ignore

by pne.chomko＠verizon.net

>from Mac.

23 years, 6 months

1
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H744 regulator whistle

by pete＠dunnington.u-net.com

On Jan 13, 20:27, Tony Duell wrote: > Yes, it's certainly a switching regulator, and the inductor (the large > block with screw-post terminals) is needed for it to work. Don't try > shorting it out -- I am not sure what happens if you do, but I would hope > the crowbar would fire as soon as the chopper turned on and supplied > 30V-ish to the output (with no inductor, the output voltage would rise > essentially intantaneously). > > These supplies will whistle if : > > The capacitors -- particularly the output one -- have high ESR. Check or > replace them. Done. > The load is just 'wrong' (these, AFAIK, are not constant-frequency > supplies). Try adding or removing load (!). Tried that. At very light loads, the whistle almost disappears. It gets louder and the pitch changes as the load increases. The most load I've tried is a full backplane, though I'm not exactly sure what the current drawn would be. > The Inductor potting compount is breaking up. Swapping the inductors between 4 x H744 and 2 x H745 makes no apparent difference, and I expect it's unlikely they've all suffered the same fate. They came from two different machines. > Loose fixing screws can cause odd noises -- try tightening everything in > the PSU chassis. One of the first things I checked :-) I suspect, as Allison wrote, that it's just the normal noise from that type of regulator, and I'm just a bit oversensitive to it :-( Thanks for the various suggestions, everyone. I'll try putting covers on a couple of them (one already has one, and some of the other regulators do as well) and mounting them on a sheet of damping material, and learn to live with the residual noise. -- Pete Peter Turnbull Network Manager University of York

23 years, 6 months

1
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H744 regulator whistle

by pete＠dunnington.u-net.com

On Jan 13, 20:28, Tony Duell wrote: > > On Jan 12, 20:14, jpero(a)sympatico.ca wrote: > > > > > Sounds like PSU is reacting to overloading or medium shorts > > > downstream of that PSU outputs. Also can happen with dried > > > up capacitors (too high ESR). > > > > I don't think it's any of those. The regulators all make a similar noise > > when I put them on a dummy load drawing 5A, on the bench. And I'm sure > > Have you tried a lighter _or heavier_ load? It can make quite a > difference. Yes, it changes the pitch somewhat (as I would expect) and it gets slightly louder with a heavier load. > > it's not bad caps, as two of them are ones I repaired recently. > > Which, if any, capacitors did you replace? In one H744, all the electrolytics (the output one had gone, so I figured I might as well do the lot). -- Pete Peter Turnbull Network Manager University of York

23 years, 6 months

1
0
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H744 regulator whistle

by pete＠dunnington.u-net.com

On Jan 13, 17:03, ajp166 wrote: > From: Pete Turnbull <pete(a)dunnington.u-net.com> > >On Jan 12, 20:14, jpero(a)sympatico.ca wrote: > > > >> Sounds like PSU is reacting to overloading or medium shorts > >> downstream of that PSU outputs. Also can happen with dried > >> up capacitors (too high ESR). > > > >I don't think it's any of those. The regulators all make a similar > noise > >when I put them on a dummy load drawing 5A, on the bench. And I'm sure > >it's not bad caps, as two of them are ones I repaired recently. > > This is normal for them as well as the older H780. They are very loud > and the pitch varies with load as well. That is a side effect of older > low voltage, low frequency switch mode PS designs of some 20+ years ago. I suppose so, I just didn't think it ought to be so irritating! -- Pete Peter Turnbull Network Manager University of York

23 years, 6 months

1
0
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Mac IIci

by SUPRDAVE＠aol.com

In a message dated 1/13/2002 3:07:42 PM Eastern Standard Time, fernande(a)internet1.net writes: > The Local GoodWill has a fairly nice Mac IIci. I've done some research > on the Low End Mac web site, but am still undecided if I should buy it. > i'd say get it if you dont have one. ci model is much better than si and unlike the cx, has builtin video. I have one complete with video capture card and came with and still setup for videoconferencing.

23 years, 6 months

1
0
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Creating PDF's from scanned image files

by djg＠drs-esg.com

> I think I have cracked the issue of converting scanned images into PDF > using only freeware! > > First off get the imagemagick toolset from www.imagemagick.org > You will also need c42pdf available at http://c42pdf.ffii.org/ > > c42pdf will create pdf files from group 4 encoded tiff images (only). To > get to those images use imagemagick convert : > > convert -compress group4 <any image file> image.tif > c42pdf image.tif > > will create image.pdf. Read the docs to see how to build multi page PDFs. > I convert tiff to g4 tiff with the following tiffcp -L -c g4 -r 10000 infile1 [infile2...] outfile This tool takes much less memory to convert. This is >from libtiff-3.5.5-2. http://www.libtiff.org/ (part of the tifftools) I have a version that I fixed some problems in c42pdf at ftp://ftp.pdp8.net/software/c42pdf/ If somebody wants a windows binary I can try building a command line one with cygwin, email me. Command line I use c42pdf -q -o outfile -p o --nostretch --noflip infile.tif It also has a --pages flag to only convert some pages. This is done on the fly to convert the tiff's on my site to pdf. This doesn't create optimized PDF's so acrobat can't fetch them a page at the time (for good or bad, frequently that delay on each page annoys me) http://www.pdp8.net/pdp8cgi/query_docs/query.pl David Gesswein http://www.pdp8.net/ -- Run an old computer with blinkenlights.

23 years, 6 months

1
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Any interest in a Sord IS-11?

by nerdware＠ctgonline.org

I've recently come across a Sord IS-11 (I think that was the model number....) with a 64k ram expander, the microcassette drive, and a full set of Eproms. It has all the manuals, but no power supply. Since I haven't heard of one before, and haven't seen on listed on ebay, anyone hear interested? Let me know or it goes in the recycling pile, since I've completely run out of collecting room. Thanks. Paul Braun WD9GCO Cygnus Productions nerdware_nospam(a)laidbak.com "A computer without a Microsoft operating system is like a dog without a bunch of bricks tied to its head."

23 years, 6 months

4
4
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WTB: TMS 4060 RAM or Equivalent

by robotron＠ntlworld.com

Hi ... I'm new to this list and I'm not sure if you trade/buy/sell here but I'm looking for some TMS 4060 RAM or Equivalent. Anyone have any or know where I can get some? I need it to repair some 8080 based computers. Thanks in advance .... Dave Langley www.robotron-2084.co.uk

23 years, 6 months

3
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Does anyone have details about the STC ZEBRA? Tony?

by mythtech＠Mac.com

>STC = Stantec = Standard Telephone and Cable. They sold a truly strange >computer called the ZEBRA. It was designed to be cheap (it used a drum >for storage and did arithmetic serially). I used to have two of them... if you are talking about the same Zebra systems I had. I don't know much about them. One of my first duties at this company was to replace them with PCs. They were used to run the "PICK" OS, and in that run an interviewing system called "Oscar". As far as the use I saw them doing, they really were nothing more than a terminal server. They were replaced within weeks with 386 PCs with DigiBoards, and an intel build of PICK and Oscar. IIRC, the Zebra's were based around a Motorola 68000 processor (I think at 16mhz, not sure... this is totally off memory). I do have 2 fairly large manuals for them still (3" binders with an assortment of smaller manuals or "chapters" clipped in them). I might also have a tape backup drive for it, but I think they had tape drives built in, so the external drive I am thinking of may go to my AT&T unix machines. I think I also still have the modem that was used on the Zebras (although, I would guess it is probably nothing more than an fairly standard 300 or 1200 baud modem). -chris <http://www.mythtech.net>

23 years, 6 months

4
5
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IBM RT Megapel boards F4COS

by zaft＠azstarnet.com

I have three Megapel video boards for the IBM RT, free for cost of shipping. Preference given to people in the US as it is so much less hassle. I believe them to work but I have no way to test 'em. Contact me offlist if you want one! GZ

23 years, 6 months

1
0
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Creating PDF's from scanned image files

by hansp＠aconit.org

I think I have cracked the issue of converting scanned images into PDF using only freeware! First off get the imagemagick toolset from www.imagemagick.org You will also need c42pdf available at http://c42pdf.ffii.org/ c42pdf will create pdf files from group 4 encoded tiff images (only). To get to those images use imagemagick convert : convert -compress group4 <any image file> image.tif c42pdf image.tif will create image.pdf. Read the docs to see how to build multi page PDFs. This has worked for a bunch of files for me so far. -- hbp

23 years, 6 months

4
4
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H744 regulator whistle

by ajp166＠bellatlantic.net

From: Pete Turnbull <pete(a)dunnington.u-net.com> >On Jan 12, 20:14, jpero(a)sympatico.ca wrote: > >> Sounds like PSU is reacting to overloading or medium shorts >> downstream of that PSU outputs. Also can happen with dried >> up capacitors (too high ESR). > >I don't think it's any of those. The regulators all make a similar noise >when I put them on a dummy load drawing 5A, on the bench. And I'm sure >it's not bad caps, as two of them are ones I repaired recently. This is normal for them as well as the older H780. They are very loud and the pitch varies with load as well. That is a side effect of older low voltage, low frequency switch mode PS designs of some 20+ years ago. Allison

23 years, 6 months

1
0
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Mac IIci

by tlindner＠ix.netcom.com

> Pat Finnegan wrote: >> I would say about a 386DX, and it'll do about 6MIPS max (one instruction >> per four clock cycles on the 68030 IIRC from my Mac IIsi). (If desired) >> you can put an older verions of MkLinux or linux-m68k on it (I used the >> m68k Debian port). > > How about BSD? I'll probably use the Mac OS, but I wonder about other > options. I remember using BSD on my IIcx. Forget which one though. -- tim lindner tlindner(a)ix.netcom.com "Life. Don't talk to me about life." - Marvin, the android

23 years, 6 months

1
0
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H744 regulator whistle

by pete＠dunnington.u-net.com

On Jan 12, 20:14, jpero(a)sympatico.ca wrote: > Sounds like PSU is reacting to overloading or medium shorts > downstream of that PSU outputs. Also can happen with dried > up capacitors (too high ESR). I don't think it's any of those. The regulators all make a similar noise when I put them on a dummy load drawing 5A, on the bench. And I'm sure it's not bad caps, as two of them are ones I repaired recently. Maybe I'm just sensitive to that frequency range :-( -- Pete Peter Turnbull Network Manager University of York

23 years, 6 months

2
1
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H744 regulator whistle

by pete＠dunnington.u-net.com

I have two H744 regulators in my PDP-11/40, along with an H7441, H745, and H754. I also have two spare H744s and one each H745 and H754. All the H744s emit a fairly loud whistle, and it's driving me nuts. I've seen a note somewhere that a loud whistle is caused by the coil de-laminating, but I don't think that's the case. I tried swapping the two original H744s for spares, no difference. I also tried swapping the coil from the spare H745, which runs almost silently, and that made no difference either. I don't think I can just remove (short out) the coil either, as this is a switching regulator and the coil is needed to make it work properly. Any suggestions? -- Pete Peter Turnbull Network Manager University of York

23 years, 6 months

4
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Does anyone have details about the STC ZEBRA? Tony?

by dpeschel＠eskimo.com

STC = Stantec = Standard Telephone and Cable. They sold a truly strange computer called the ZEBRA. It was designed to be cheap (it used a drum for storage and did arithmetic serially). The instruction format is unusual -- 15 function bits (I think each affects a gate) and a 12-bit address of a drum location and a 5-bit address of a "fast store" location (basically a small number of registers). The amount of logic in the machine is small, so the instruction decoding is simple in a sense. But the logic is connected in very subtle ways -- two things can happen independently, or an instruction can set a whole sequence of events in motion. There is an emulator for this machine; I have some of the literature about it too. But I don't have the manual or the schematics, and the literature I have just doesn't make the design "click" into place in my head. The emulator code is not very intuitive either. So that's why I'm hoping someone else has heard of this machine. -- Derek P.S. Tony, I think you would enjoy this design (if you don't already know about it).

23 years, 6 months

2
2
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KA655 boot PROM errors

by Antonio.Carlini＠riverstonenet.com

> jkunz(a)unixag-kl.fh-kl.de wrote: >t 9e lists this codes as: >42 20051269 Check_for_intrs *** >C6 2004D2F0 SSC_powerup ********* >53 2004E8C0 TOY clock repeat_test_250ms_ea Tolerance *** > >TOY clock is OK, as I expect the NiCd akku to be ded. But >"Check_for_intrs" and "SSC_powerup" are not that explanative to me. SSC is the System Support Chip and it sounds as though the diags are finding something wrong with it. I have no docs that detail much about the SSC and nothing that details exactly what the diags are doing. It does sound as though the chip has some sort of serious failure. I *thought* that the SSC provided the console support too - if that's right then it's clearly not completely dead. Did these errors only start when you swapped cards around? Do thigns work when you put things back as they were? Antonio

23 years, 6 months

3
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H744 regulator whistle

by pete＠dunnington.u-net.com

On Jan 13, 2:54, Sipke de Wal wrote: > Sometimes it helps to fasten coils a bit with siliconekit > or araldite, or if a bit of heat is not a problem thermal-glue > Silicone kit has the added benefit of dampening high freq. > vibrations cause it has a somewhat rubbery constitution.... The coils in H7xx regulators are already encapsulated. Sorry, I should have mentioned that. -- Pete Peter Turnbull Network Manager University of York

23 years, 6 months

1
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KA655 boot PROM errors

by jkunz＠unixag-kl.fh-kl.de

Hi. Every time I switch my MicroVAX 3900 on it says: ----- ?42 2 0C FF 00 0000 P1=2004CBA6 P2=FFFFFF0C P3=00000001 P4=00000000 P5=00000000 P6=00000000 P7=00000000 P8=00000000 P9=00000000 P10=00000000 r0=0000000C r1=00000000 r2=00000042 r3=2014078C r4=20051269 r5=20051096 r6=200550A7 r7=00000000 r8=00000000 ERF=80000000 ?C6 2 01 FF 00 0001 P1=00000000 P2=00000000 P3=00000000 P4=00000000 P5=00000000 P6=00000000 P7=00000000 P8=00000000 P9=00000000 P10=00000000 r0=00000000 r1=00000022 r2=00000080 r3=201407A4 r4=2004D2F0 r5=2004D310 r6=2004D316 r7=00000000 r8=00000000 ERF=80000000 KA655-A V5.3, VMB 2.7 Performing normal system tests. 40..39..38..37..36..35..34..33..32..31.. ?53 2 05 FF 00 0002 P1=00000002 P2=00000028 P3=00000000 P4=00D45577 P5=00000000 P6=FFFFFFFF P7=00000000 P8=00000000 P9=20051BD2 P10=20051CE0 r0=00000001 r1=00000001 r2=00000053 r3=00000000 r4=00000002 r5=2004E8F9 r6=200551A9 r7=00000000 r8=00000000 ERF=82000180 30..29..28..27..26..25.. 24..23..22..21..20..19..18..17..16..15..14..13..12..11..10..09.. 08..07..06..05..04..03.. Normal operation not possible. >>> ----- What does it want to tell me? I get the same if I restart it via the reset button after power up. If it was running for a wile I don't get an error on reset. If I switch the power off for a few secounds I get the error again. NiCd akku? -- tschuess, Jochen Homepage: http://www.unixag-kl.fh-kl.de/~jkunz

23 years, 6 months

7
11
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3com 3station

by jeff.kaneko＠juno.com

On Fri, 11 Jan 2002 10:21:25 -0500 (EST) Pat Finnegan <pat(a)purdueriots.com> writes: > By looking at mine, I can tell it uses a VGA monitor, and has 1M of > RAM (upgradable to 5M with SIMMs I have laying around here). Oh yeah, > it looks to be a 20MHz 80286 also. Yeah, that's the later version. I seem to recall that they didn't make too many of those. . . . > > I still have a copy of 3+Share (and 3+Start) around here > > someplace . . . > > That would be nice if you could find it. However, I won't hold my > breath for it. After attempting to hook an old floppy drive up to it's > 34pin connector, I realized it was definately designed for something else > (one orientation froze the box, the other shorted out the power supply > :-( ) Yow! DOes the thing still light up? I never did fighre out what that connector was for. > I'll take that into consideration. Thanks for the help! Sure. Mebbe I'll have to dredge up my copy of 3+Share . . . Jeff ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/.

23 years, 6 months

3
4
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OT: DELL SUCKS! Re: PC Gamer, best 50 classic games issue?

by mythtech＠Mac.com

>But if you pick the cheapest, you may find they underestimated >what it took to run a profitable company that will survive, and >6 months later are out of business. > >I've seen it. People that bought from cheap local vendors that >offered 5 year, even lifetime, warranties, gone, gone, gone. > >They come and go like sand on the beach. > >If they want a cheap PC, they have probably doomed themselves >to failure from the outset. I agree, but still, my attitude has become (due to years of dealing with windows and the declining quality of PC hardware), that you can spend $3000 on a PC, or you can spend $300 on a PC, and they are both going to work (quality/stability wise) about the same. Either way, you will wind up with problems keeping windows running. Granted 99% of this is due to windows sucking so bad (if you aren't planning on running windows, then this is a totally different situation, but I am only dealing with advise I give to prospective Wintel buyers). As for if a company will be here in 5 years to support the PC, there are no bets that ANY computer company that is here today will still be here 5 years from now. (perfect example of this. A few years ago, my fire department decided to switch from a Mac to a PC since we need to upgrade the computer anyway. The PC people argued that Apple wouldn't be here in 5 years, so don't get a Mac. Us Mac people pointed out that it doesn't matter, because in 5 years the computer will be ready to upgrade anyway. Well, the vote went to get a PC... and to buy a Packard Bell. Well... Apple is still selling Macs... and Packard Bell... well... they are the ones that are gone... so the computer was replaced AGAIN, this time with a Gateway... who now looks to be dying) But I would still support people going to a fly by night, and risk them going under. I don't advise getting long term support contracts anymore, simply because I am so unimpressed with the support you can get. Phone support tends to be luck of the draw. 90% of the time you get a brainless bonehead. On site tends to be just as bad (I might be in one of those "bad contract support" areas for the local "on site" support options... don't know). So why pay 5 times the price to get a "brand name", when it is going to give you the same headaches as the cheaper CompUSA sold, or mom & pop sold PC. At least if you buy from a local vendor (CompUSA, or a mom&pop), you can carry the computer in to them and bitch to a person... you aren't stuck with phone support. And buy going with a cheap mom&pop... you are more likely to get them to fix it. CompUSA will tell you to contact the computer maker. Although, I do hear good things about the local Gateway Country store in doing on the fly repairs on a carry in. But honestly, I just don't recommend Wintel machines AT ALL anymore. I really tell people to look around and find another option. If you want if for games get a console system, if you want it for internet access, get a used PC (I recommend used Win systems over used Macs for an internet only machine, simply because, like it or not, many web sites cater to windows and IE... that and many of the people that ask me about an internet only machine want AOL, and the windows AOL client is much better than the Mac one), and if you want it for general computing, get a Macintosh. Windows blows, and is no longer worth the money and heartache for new machines unless you NEED it for some reason. But that is just my opinion. -chris <http://www.mythtech.net>

23 years, 6 months

4
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Stan Veit's History of the PC Books - Blow Out - $4 Shipped!

by MTPro＠aol.com

I have a number of brand new copies I'd like to move out. This is a super deal just for classiccmp subscribers. Please e-mail me! For more info on the book, see: http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1289515294 Best, David David Greelish Classic Computing www.classiccomputing.com "classiccomputing" on eBay

23 years, 6 months

3
2
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Free: 3B2 OS tapes

by mrbill＠mrbill.net

I've got two QIC tapes here: - AT&T 3B2 Operating System Utilities Release 3.2.1 V3 120Mb Tape - Operating System Utilities Rel 3.2.1 V3 Issue 2 (1Q93) Free for the cost of postage. Surely someone has a 3b2 and needs an OS.. Bill -- Bill Bradford mrbill(a)mrbill.net Austin, TX

23 years, 6 months

1
0
0 0

Available: GXT500 video card from RS/6000

by mrbill＠mrbill.net

I've got a GXT500 video card, pulled (or, will be soon) from an IBM RS/6000 42T for sale or trade. Preferrably trade for more RAM for this machine (it currently has 128meg). Mail me if interested - I dont need the card, as I'm going to run the machine headless. Bill -- Bill Bradford mrbill(a)mrbill.net Austin, TX

23 years, 6 months

1
0
0 0

Looking for Software/Documentation for a Definicon 68020 board (and / or another Definicon baord)

by Bernd.Kopriva＠t-online.de

Hi, some months ago, i got a Definicon 68020 co-processor board without any software and documentation. Paul Santa-Maria send me some software, but i did not manage to get the board working ... ... maybe the software was not the correct one or the board is defect. As i'm really interested in getting the board running, i'm asking again for any software / documentation. Maybe someone can offer me another board (i'm especially interested in the NS32032 board as well) at a reasonable price. Thanks Bernd Bernd Kopriva Phone: ++49-7195-179452 Weilerstr. 24 E-Mail: bernd(a)kopriva.de D-71397 Leutenbach Germany

23 years, 6 months

1
0
0 0

Looking for Software/Documentation for a Definicon 68020 board (and / or another Definicon baord)

by Bernd.Kopriva＠t-online.de

Hi, some months ago, i got a Definicon 68020 co-processor board without any software and documentation. Paul Santa-Maria send me some software, but i did not manage to get the board working ... ... maybe the software was not the correct one or the board is defect. As i'm really interested in getting the board running, i'm asking again for any software / documentation. Maybe someone can offer me another board (i'm especially interested in the NS32032 board as well) at a reasonable price. Thanks Bernd Bernd Kopriva Phone: ++49-7195-179452 Weilerstr. 24 E-Mail: bernd(a)kopriva.de D-71397 Leutenbach Germany

23 years, 6 months

1
0
0 0

Ugly Computers (Was: RE: Appropritate comic strip....)

by mythtech＠Mac.com

>maybe the anti-NeXT. The "Before"? >I think it's a moderately ugly design, but I asked my employer to get >me one as I'm curious (though I'm not curious enough to get one for >home). They're happy to oblige, so I'll get a chance to see how durably >the critter is constructed. It does seem like it'd be likely to get >broken. I don't think it will be any more prone to breakage than any other LCD display. The base should be just as durable as any other computer, and the swing arm should be no less fragile than the thousands of lamps that have a similar arm on them. If anything, I would think it is MORE durable than many computers, being that apple has done a good job making very durable iBooks. BUT... like all LCD display's, that portion will be prone to cracking if abused. That shouldn't be much of a problem for the standard home user, but for the K-12 market... I have never thought an LCD display (of any kind, from any maker) was a smart idea. Good old heavy glass CRTs take a much better licking than LCD could ever hope to (in testing, it took me a number of swings with the base of a rolling chair to break thru the glass of a VGA monitor, but my laptop LCD cracked with only mild weight placed on it when I stepped on it) In the long run, it is probably unlikely that too many people from this list will "get it" with the new iMac. The reason being is, the new design is going after the market of people that want a computer to fit around their life style. So they are trying to go after the "its furniture" market. The nature of most of the people on THIS list are ones that like a computer to BE a computer... a nice traditional, boxy, blinking light, noisy COMPUTER. Apple has been moving farther and farther away from that kind of market. This list is full of people who's life works around the computer, and apple wants the market where the computer works around life. I mean really, the target market for the new iMac is certainly not a group of people that tend to rent storage garages just to store their extra PDPs (You aren't going to get a new iMac user group where the people discuss staying warm in their storage shed by sitting on top of a mini while writing code on an old portable and its 5" screen!) -chris <http://www.mythtech.net>

23 years, 6 months

6
7
0 0

Atari games in limestone cavern

by SUPRDAVE＠aol.com

In a message dated 1/11/2002 9:47:36 PM Eastern Standard Time, rhblakeman(a)kih.net writes: << When I got rid of the last of my 2600/7800 carts I sold 25 of them for 10 bucks - we were totally bored with them after playing for many years. It's all in how bad the seller wants to get rid of them. >> depends. carts like combat and football and all those boring atari ones are pennies a dozen. the better ones from activision are more of course, river raid was the best. now, where did i put my atari 2600 power supply..... -- Antique Computer Virtual Museum www.nothingtodo.org

23 years, 6 months

3
3
0 0

Continuing PDP11 saga

by pete＠dunnington.u-net.com

On Jan 9, 18:19, Tom Leffingwell wrote: > > I think I finally get the picture on the addressing...However, > that raises two more questions. If my program is trying to talk to a > 22-bit address, and I have 18-bit addressing, will it not work, or will it > be converted? It will be converted. When the CPU is running a program, it only uses 16-bit addresses in the program. The MMU treats anything above 160000 as an access to the I/O page, and remaps it. > Also, if my backplane becomes 22-bit (by replacing it or > adding the jumpers for the other 4 bits) does everything automagically > change to 22-bit, or do you change a jumper on the M8186, or on the MSV11, > or both? It automagically works, except for a very few cases (and I can't even think of an example at the moment). The reason is that most I/O devices actually decode a signal called BBS7 (Bus Bank Select 7) instead of the highest address bits. The signal gets its name from the fact that the original LSI-11 used 16-bit addressing, and bank 7 was the I/O page. It's still only activated for I/O page access, regardless of whether your processor uses 16- 18- or 22-bit addressing. -- Pete Peter Turnbull Network Manager University of York

23 years, 6 months

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OT: Hate to belabour the point...

by mcguire＠neurotica.com

On January 11, Sellam Ismail wrote: > ...but today's San Jose Mercury News has a very timely article on how > Dell's customer support sucks big elephant testicles. Are there such things as *small* elephant testicles? -Dave -- Dave McGuire St. Petersburg, FL "Less talk. More synthohol." --Lt. Worf

23 years, 6 months

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Atari games in limestone cavern

by witchy＠binarydinosaurs.co.uk

Odd subject I know, but sometime last year there was a story of a guy in California (ish) who had 2 million Atari 2600/7800 games in a cavern somewhere and he was selling them for $2 a pop..... Anyone got a link to him? also, anyone got a spare boxed Magnavox Oddysey they'd like to pass on to a UK computer museum? :) I'm talking money here....though donations are always welcome! -- witchy/adrian www.binarydinosaurs.co.uk - the online computer museum www.snakebiteandblack.co.uk - monthly gothic shenanigans Linux Powered!

23 years, 6 months

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Ugly Computers (Was: RE: Appropritate comic strip....)

by vaxzilla＠jarai.org

On Fri, 11 Jan 2002, Douglas Quebbeman wrote: > It's looking pretty certain that the Twentieth > Anniversary Mac will be youngest Macintosh that > will *ever* be in my collection... > > Lampintosh? > > Easily-Broken-In-Two-In-Tosh? > > Smackintosh? (what I want to do to it) Well, first we had MacOS X, the revamp of NeXTstep. Then we had the G4 Cube, an obvious though modernized callback to the NeXT Cube design. Now it's like they've tried to create something that's entirely non-NeXT, at least asthetically. Basing the design on a white sphere places it completely opposite the black cube of the NeXT. So I'd call it the notaNeXTintosh, or maybe the anti-NeXT. I think it's a moderately ugly design, but I asked my employer to get me one as I'm curious (though I'm not curious enough to get one for home). They're happy to oblige, so I'll get a chance to see how durably the critter is constructed. It does seem like it'd be likely to get broken. -brian.

23 years, 6 months

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VAX 11/780s - Masscomp - Valid equipment available

by auringer＠tds.net

Mark Tapley wrote: > You are probably way ahead of me on this, but tapes of the O/S's and other > hardware, where available, might be well appreciated by the machines' > ultimate owners - or owners of similar machines. All of the system software is being preserved. The tapes I was referring to are the hundreds of backup tapes that line the walls of the computer rooms (and elsewhere!). > Good luck and thanks very much for all your work! Thanks for the thought. It has been a bit of a headache. > Are there any NeXT or Digital Group (not DEC) or Balcones Microcomputer > systems there? Long shots, I know, but thought I'd ask. None of those, sorry. Later, Jon

23 years, 6 months

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Looking for VMS 5.5-1 CDROM

by vaxman＠earthlink.net

Anybody got one? TK50 would work too, but I'd prefer CDROM.... Contact me off-list, and we can discuss what I'll trade for it... Clint

23 years, 6 months

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What exactly is a MINC-11, and does anyone need one?

by auringer＠tds.net

Hello all, Another item I keep forgetting about is a digital MINC-11. This appears to be a data acquisition system of some sort. The MINC chassis contains only a clock card and an AD card. The chassis is on a cart that also contains a digital RX02 dual 8" floppy drive enclosure. The most curious thing is that there is a label stuck to the front warning that the unit "220VAC/50Hz only". I don't know if this is the only voltage it will run at, or if it is simply set for this voltage. I don't believe we ever used this equipment. I think we acquired it when we purchased some other surplus equipment back in the 1980s. Can anyone use this thing? Later, Jon Jon Auringer auringer(a)tds.net Astronautics Technology Center Madison, WI

23 years, 6 months

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Atari games in limestone cavern

by mythtech＠Mac.com

>Odd subject I know, but sometime last year there was a story of a guy in >California (ish) who had 2 million Atari 2600/7800 games in a cavern >somewhere and he was selling them for $2 a pop..... > >Anyone got a link to him? I just threw that link out yesterday! I will try to remember when I get back to work on monday to check my web history and pull it back up (that is, if someone else doesn't offer the link before then) -chris <http://www.mythtech.net>

23 years, 6 months

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IBM System/34...

by SUPRDAVE＠aol.com

In a message dated 1/11/2002 9:24:15 PM Eastern Standard Time, out2sea00(a)yahoo.com writes: << >:-0 What a horror story. If I can be of help please let me know. I have no idea about the operating condition of the 5362 arriving next week. If it runs maybe I will be able to do a bit of data recovery through a 5152 emulation. But I don't have any docs at all so I haven't a clue how to hack the login and recover any OS still extant on the system. If you have docs or suggestions to that end, please share them. >> someone in alt.folklore.computers emailed me the instructions on how to crack the login passwoid. i'll see where I put that document. -- Antique Computer Virtual Museum www.nothingtodo.org

23 years, 6 months

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5 inch CRT available

by SUPRDAVE＠aol.com

clearing more goodies out. such much faster and easier than epay, that's for sure. motorola 5inch display in a small cage with electronics like flyback, etc. has connector on back for interfacing. from a xeroxed paper that's in the box, it says standard CGA resolution and gives pinouts. label sez mod #MD1000-390a. from 1986 and is unused. make an offer which will allow me serveral steak burritos at taco bell and its yours. -- Antique Computer Virtual Museum www.nothingtodo.org

23 years, 6 months

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Musicians (and computer music)

by mranalog＠attbi.com

M H Stein <mhstein(a)usa.net> > Don't I recall correctly that someone (Jay?) tracked him down > in Korea, but that he was going to be back soon? I said that when I talked to Hal Chamberlin in 1999 he was in Korea. When I talked to him last weekend he did not mention where he was, but I don't think he's still in Korea. Someone on the list is currently working on getting more information on the HAL-4096. That information should available soon. > Maybe he's got something to contribute to posterity when he gets > back from Korea. I thought he already had. Regards, --Doug ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://dcoward.best.vwh.net/analog Analogrechner, calculateur analogique, calcolatore analogico, analoogrekenaar, komputer analogowy, analog bilgisayar, kampiutere ghiyasi, analoge computer. =========================================

23 years, 6 months

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IBM System/34...

by out2sea00＠yahoo.com

< ... I need to get my hands on disk images of the microcode, SSP, and RPG II diskettes for an IBM S/34.... > Daniel -- >:-0 What a horror story. If I can be of help please let me know. I have no idea about the operating condition of the 5362 arriving next week. If it runs maybe I will be able to do a bit of data recovery through a 5152 emulation. But I don't have any docs at all so I haven't a clue how to hack the login and recover any OS still extant on the system. If you have docs or suggestions to that end, please share them. Thanks, Colin Eby Senior Consultant CSC Consulting __________________________________________________ Do You Yahoo!? Send FREE video emails in Yahoo! Mail! http://promo.yahoo.com/videomail/

23 years, 6 months

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Ugly Computers (Was: RE: Appropritate comic strip....)

by dhquebbeman＠theestopinalgroup.com

> Have a look at this comic strip... (Wednesday's strip) It's looking pretty certain that the Twentieth Anniversary Mac will be youngest Macintosh that will *ever* be in my collection... Lampintosh? Easily-Broken-In-Two-In-Tosh? Smackintosh? (what I want to do to it) <shudder> -dq

23 years, 6 months

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VAX 6000-460 booting saga continues ...

by gunther＠aurora.regenstrief.org

Hi, after a quick excursion in getting a PDP8/A up and running (as far as that gets without any peripherals other than the programmers console :-), I'm now back to the big toy. The 6460 is still waiting to boot Ultrix. Recap: it's up and running from VMS 7.2 or VMX 5.6 from RA90 disks through KDB50 and KDM70. I don't have any working IP communication because the VMS 5.6 just doesn't have anything and 7.2 has MULTINET which just refuses to run with the old license key, nor with a cheat hack, nor with a hobbyist license key. So I'm now down to transferring files through modemspeed. (I could write a TK70 or 9-track tape at my workplace, but that's a hassle by itself, so I keep that as a last restort.) Luckily I have kermit on the VMS 7.2 so I have a convenient yet slow way of transferring files. I also have a boot tape from Isildur. That's Ultrix 4.1. That version seems to not support the 6400, it boots up until a certain point and then simply halts. I'm very sure it is *not* a tape read error and that the boot process fails somewhere after the VMB is loaded and probably at the point where vmunix is started. I assume it just can't get a hold of the console at that time to put out an error message and just dies. Even the primary ultrixload will dump an error message before it halts. The more recent developments: I also have an Ultrix-4.5 CD. But no CD ROM hooked to the VAX and no other VAX (InfoServer) with CD ROM and so I cannot boot that. I could possibly just write the CD ROM image onto a disk verbatim and fingers crossed boot from it. However, I cannot pump the 178 MB through the 9600 b/s line, or else I have to have that thing up for 2 days and two nights only for something that might just plain not work. Interestingly this CD is not an ISO file system but a simple UFS written to the CD in 10 kB blocks. FreeBSD's mount unfortunately cannot mount that. However, I just dd'ed an image onto disk and vnconfig - mount form there. It's read-only and disklabel doesn't make any sense out of it, but I can read everything just fine. Today's news: So, I decided I make myself a bootable tape from the reverse engineered Ultrix 4.1 boot tape and the new 4.5 files from the CD. The Ultrix boot tape comes with a vmunix that apparently has some sort of standalone memory root file system. Then it supposedly is able to set up a disk and install a dump backup onto that disk. That dump backup contains mkfs, disklabel, ifconfig, rcp, uncompress, and tar, so I have everything to set myself up even if the autoinstaller cannot deal with my hack. The boot tape I could read from VMS. $ MOUNT/FOREIGN/BLOCKSIZE=512/RECORD=512 MUC6 $ COPY MUC6: FILE.00 $ COPY MUC6: FILE.01 $ COPY MUC6: FILE.02 --> ERROR $ DISMOUNT MUC6: $ MOUNT/FOREIGN/BLOCK=10240/RECORD=10240 MUC6 $ SET MAGTAPE /SKIP=FILE:2 $ COPY MUC6: FILE.02 $ COPY MUC6: FILE.03 $ COPY MUC6: FILE.04 $ COPY MUC6: FILE.05 ... and so on. It's got some 40 or so files on it. What there files are we are being told from the ultrixload.c source code. FILE.00 is the ultrixload image, about 18 kB in size. Ultrixload is said to load either vmb.exe or a standalone kernel from a non-file structured device. The layout of the boot device is descibed as: FILE.00 - ultrixload FILE.01 - a combo consisting of - descriptor block 1 512 byte block - vmb.exe (optional) - vmunix (compressed if not a TK50) This magic descriptor block is described as: struct desc { union { char pad[512]; struct { struct exec x; /* a.out image header */ int nblks; /* num of 512 byte blocks on medium */ int vmbblks; /* size of VMB in 512 byte blocks */ int compressed; /* 1 = compressed, 0 = not compressed */ } d } un }; By loading the initial portions of the other files down to my BSD system and using file and stuff, I figured the other files: FILE.02 - the ROOT file system dump FILE.03 - an uncompressed tar of the instctl files (on the CD) FILE.04 - a compressed tar that is called ULTBASE450 on the CD FILE.05 - a compressed tar that is called ULTBIN450 on the CD ... and so on. The instctl tar begins with a file called ULT.image and that is just a list of files beginning with ROOT, ULTBASE, ULTBIN, that apparently correspond with the files on the tape in that order. So, my plan is to fiddle with files 0 and 1 only and keep the rest, as it should be compatible with the 4.5 kernel. That reduces the amount of data to transfer tremendously. Quickly I found that I have no ultrixload on the CD, so the old version will have to do. As I have strong indication that that works, I can leave it at that. Remains to work on file 1, that funny combo of descriptor, vmb.exe and vmunix. The tar file 4 (ULTBASE) contains a vmb.exe as well and so I could compare the two files that came with ultrix 4.1 and 4.5 respectively. They were both the same size and actually both the same. I successfully extracted another exact copy of vmb.exe using dd if=file.01 bs=512 of=vmb.exe skip=1 count=86 So, whatever VMB.EXE is for (sounds like a VMS boot block), I can reuse the old one. Given that I have a standalone vmunix, all I'd need to do is cut and paste that somewhere after block 86 to the end of file 1 with a few cat and dd operations. But here the problem starts. I cannot interpret the descriptor block very well. It tells me that the VMB.EXE is 86 blocks in size and that is exactly 44032 bytes, that corresponds with the actual size of the vmb.exe file from the tar archives. Good, but apparently the vmunix is not a complete piece. Apparently that descriptor block's a.out header slot actually holds the a.out header from the vmunix file and the vmunix file is right after the vmb.exe without it's a.out header. I also see a lot of 0 data in that region. So apparently I will have to fiddle with that a.out header and need to know just where to cut vmunix. That is a problem. I will try to figure that out somehow. My hunch is that the a.out block (which I haven't been fiddling with since I ported Kyoto Common Lisp to 386/BSD 0.1) allows for the executable to actually have some other stuff like that vmb.exe before the actual start of the executable image. I have no idea though what the purpose of this stupid vmb.exe is. All in all I'm optimistic. I'd love to make a boot tape with 4.5 Ultrix that I could then share with my friends (that is you) who also want to get their 6400s converted to Unix. As always I'd be thankful for any helpful ideas you might have. regards, -Gunther -- Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org Medical Information Scientist Regenstrief Institute for Health Care Adjunct Assistant Professor Indiana University School of Medicine tel:1(317)630-7960 http://aurora.regenstrief.org

23 years, 6 months

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Ugly Computers (Was: RE: Appropritate comic strip....)

by mcguire＠neurotica.com

On January 11, Brian Chase wrote: > I think it's a moderately ugly design, but I asked my employer to get > me one as I'm curious (though I'm not curious enough to get one for > home). They're happy to oblige, so I'll get a chance to see how durably > the critter is constructed. It does seem like it'd be likely to get > broken. I'm all for quality construction, but this makes me want to ask...just how rough ARE you with your computers? 8| -Dave -- Dave McGuire St. Petersburg, FL "Less talk. More synthohol." --Lt. Worf

23 years, 6 months

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DPC Interface Inquiry

by tarsi＠binhost.com

Got a good one, folks. A friend of mine is trying to use a Spur U.S.A.-1/DPC(7U) box. Spur U.S.A being the model and DPC being sub-model. I guess he knows that U.S.A. stands for Universal Subsystem Adaptor and DPC stands for Data Products C????. It takes input from a 50-pin amp connector and outputs to an IBM Channel Bus & Tag. He knows what the box does and has a Bus & Tag box to use it with, but can't figure out what DPC is or where to find the 50-pin amp connector or the pinouts for it. Anyone help out? Thanks! Tarsi 210 -- ---------------------------------------------- Homepage: http://tarsi.binhost.com binHOST.com: http://www.binhost.com Forever Beyond: http://www.foreverbeyond.org ----------------------------------------------

23 years, 6 months

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eMag Solutions LLC announces end of life plan for open reel ( 9-track) tape

by dhquebbeman＠theestopinalgroup.com

> Aw Geeze.... is this really the end? I would go nuts if I couldn't get 9 > track mag tapes anymore. Pretty much everything in my collection depends on > it. The note says emag is the last manufacturer. Is that in the US, or in > the world? I'm wondering if they will still be available for purchase, but > will originate from overseas manufacturers. I had posted disbelief about this in alt.sys.pdp10... I'd not heard of eMag, but if eMag is EMTEC Magnetics GmbH, then that's BASF! They didn't quite invent magnetic tape, but they claim to have been the first to have commercial success with it. If BASF is abandoning 9-track magtape, then I fear it's true, the end is near... Don Lancaster (yes, *the* Don lancaster) is selling new reels on E-Bay on a regular basis... bought two reels last year. So, I'll be stocking up on new and used tapes, for sure... -dq

23 years, 6 months

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pinging Brian Hechinger...

by DAW＠yalepress3.unipress.yale.edu

Is he just off on another trip? I sent him a private message the other day, about some goods for him, and haven't heard a reply yet... --- David A Woyciesjes --- C & IS Support Specialist --- Yale University Press --- mailto:david.woyciesjes@yale.edu --- (203) 432-0953 --- ICQ # - 905818

23 years, 6 months

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(fwd) Free Radio Shack Model 100 computers (fwd)

by jpl15＠panix.com

Forwarded from a newsgroup for possible interest: ---------- Forwarded message ---------- Date: Fri, 11 Jan 2002 13:51:37 -0500 (EST) Subject: (fwd) Free Radio Shack Model 100 computers -- forwarded message -- From: test2(a)pactec.net (Dave) Newsgroups: rec.radio.amateur.equipment,rec.radio.amateur.swap,rec.radio.swap Subject: Free Radio Shack Model 100 computers Date: 11 Jan 2002 09:28:49 -0800 Organization: http://groups.google.com/ I have 11 Radio Shack Model 100 laptop PCs and 5 associated Chipmunk 3.5" floppy drives sitting in the radio shop at work. We no longer need them and I wanted to offer them free to anyone who might want them before we throw them out. Only one manual. You pay only the shipping. Dave N7BHC (909) 389-1122 -- end of forwarded message --

23 years, 6 months

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Compukit UK101

by Adrian.Graham＠corporatemicrosystems.com

> -----Original Message----- > From: ard(a)p850ug1.demon.co.uk [mailto:ard@p850ug1.demon.co.uk] > Sent: 10 January 2002 19:43 > To: classiccmp(a)classiccmp.org > Subject: Re: Compukit UK101 > > Well, FWIW, the articles I have say time and again that if > the machine > ever fails to respond to the keyboard, the first thing to > check is that > Shift Lock is down :-) > And guess what! Working system.....grr....:) Now to attempt repair on the other one and maybe try and work out what all the spare boards I've got do! One is supposed to be a colour display, there's one with a Big Speaker on (hmm :) plus half a dozen others. l8r a

23 years, 6 months

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Reading PET tapes (was Re: Apple disk -> MSDOS)

by mhstein＠usa.net

Some questions for the CBM experts: CBM->PC seems pretty trivial through a Parallel or Serial adapter (although ML might be tricky 'cause you can't just list it), but how do you get it back to a CBM? If you're just archiving, couldn't you just connect the CBM cassette port to the PC sound card line in&out, with _maybe_ a little padding and/or shaping since I think CBM, unlike most folks of that era, squared up the audio a little in the datasette (although ISTR that it usually worked OK with a normal recorder, and presumably you could set the levels with the PC volume controls)? Especially if there's an app that can decode the .wav files, what else do ya need? Reminds me of the days when I "networked" my PETs with a 40' cassette "Null modem" cable. Where could I find that cassette reader & .wav decoder, BTW? Tell us more! F'rinstance, I see someone elsewhere on the list looking for Phuzzy-Wuzzy; I remember it well and probably have it somewhere (although I didn't find it either in the Cursor tape index). So, if I do find it and this person wants it, how, specifically, could I email it to him/her in a format that he/she could load into the PET without having to build anything complicated (or mailing the actual tape)? Seems to me this goes on all the time in the amazingly active CBM community, I'm just not sure of the exact details (cable pinouts, required software, etc.) BTW, need a chiclet keyboard? Just recently tossed my small KB 2001 (yes, working - I can hear the curses...) but I think I've got at least two almost new chiclet keyboards (no worn-off legends, protective plastic still on most keys) left >from the days when we were replacing them with the full-size ones (that's me, toss the good stuff & keep the junk). Mind you, you might have to take the case with it, along with the funky chopped-up datasette. Also have a 2001 motherboard, maybe 2. BTW, speaking of CBM, I recall a recent discussion abt using a US 8032 in the UK and problems with a wavy screen (not to mention learning a lot about magnetic shielding); I wasn't positive at the time, but from what I've read there definitely (as definite as the printed word gets) was a different ROM for 50Hz operation to avoid that problem. mike ---------------------Original Message----------------------- From: Ethan Dicks <erd_6502(a)yahoo.com> Subject: Reading PET tapes (was Re: Apple disk -> MSDOS) - --- Sellam Ismail <foo(a)siconic.com> wrote: > On Wed, 9 Jan 2002, Ethan Dicks wrote: > > > My X1541 cable also has a 6-pin C= cassette port on it. I have read > > many PET tapes directly from DOS with a real C2N tape recorder. > > How is the cassette data read by the PC? Does it decode the audio? Not audio (though there is an app that will decode .WAV files of PET tapes). Someone wrote a DOS app that reads the parallel port bits and converts them into a .T64 file directly. For alignment/phase, there's a graphical mode that scrolls the data up the screen along with "guard bands" that show where the app thinks a 0 and a 1 are. You use the cursor keys to align the data from the tape drive and the guard bands for optimal data parsing. Once you have an offset >from this process, you can use it as a command-line parameter for bulk reading. It works well enough, but I really wish the source were available (it never seems to be for DOS programs, unlike Unix and Amiga software). I have a small pile of PET Rabbit-format tapes that I want to extract from. My BASIC 2.0 PET needs repair (keyboard problems), so I can't just read the data and save it to disk. I have plenty of 8032s, but only one 2001 (got the 80-col PETs from university surplus for $10 a few years ago; we got the 40-col, 32K PET when I was grade-school for $1175). - -ethan

23 years, 6 months

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pinging Brian Hechinger...

by DAW＠yalepress3.unipress.yale.edu

Okay, thanks. Well, if anyone has another way to gat ahold of him, the VAX 4000 he's buying from us will be ready for pickup next week. Also wondering if the 2 4d/35's he offered are still available... He can call my work phone number... --- David A Woyciesjes --- C & IS Support Specialist --- Yale University Press --- mailto:david.woyciesjes@yale.edu --- (203) 432-0953 --- ICQ # - 905818 ! -----Original Message----- ! From: Matt London [mailto:classiccmp@knm.yi.org] ! ! ! Hi, ! ! On Fri, 11 Jan 2002, David Woyciesjes wrote: ! ! > Is he just off on another trip? I sent him a private message the ! > other day, about some goods for him, and haven't heard a ! reply yet... ! ! He's waiting for his frame relay line to be installed and is ! without email ! for the moment. ! ! Hopefully not for long :&) ! ! -- Matt ! ! --- ! Web Page: ! http://knm.org.uk/ ! http://pkl.net/~matt/ !

23 years, 6 months

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Old TV show

by mhstein＠usa.net

Just curious: anybody here ever see a TV show back in the 80's called Bits and Bytes, exploring the PETs, Apples, TI99's etc. of the day and starring Billy Van (Laugh-In) and Luba Goy (Cdn Air Farce)? mike

23 years, 6 months

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(fwd) FS: Dauphin DTR-1 computer (fwd)

by jpl15＠panix.com

Forwarded from a newsgroup for any possible interest: ---------- Forwarded message ---------- Date: Fri, 11 Jan 2002 13:52:06 -0500 (EST) From: John Lawson <jpl15(a)panix.com> Subject: (fwd) FS: Dauphin DTR-1 computer -- forwarded message -- From: test2(a)pactec.net (Dave) Newsgroups: rec.radio.amateur.equipment,rec.radio.amateur.swap,rec.radio.swap Subject: FS: Dauphin DTR-1 computer Date: 11 Jan 2002 09:32:23 -0800 Organization: http://groups.google.com/ FS: Dauphin DTR-1 pen/tablet computer. 486SLC processor. $50. Dave N7BHC (909) 389-1122 -- end of forwarded message --

23 years, 6 months

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VAX 6400 booting saga: barred from using MULTINET (sigh!)

by mrfusion＠uranium.club.cc.cmu.edu

you could also try to install CMU-IP. what version of VMS is this? it was once a popular free tcpip for VMS.. it should still be findable around here somewhere in some dusty directory on an ftp server.. On Sat, 8 Dec 2001, Gunther Schadow wrote: > - Screw multinet and find some DECnet implementation for FreeBSD. > Heck, obviously Linux has a DECnet support, so why don't we? > The serial port is just not an option to move the several > hundred MB of ULTRIX data over. Also, an ultrix box has decnet support as well. Isildur

23 years, 6 months

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HP-125 CPM computer for sale

by rigdonj＠intellistar.net

I spotted this on E-bay and thought some of you might be interested. Don Maslin has SW for this. I own a 125 and I can tell anything that you need to know about them. E-mail directly since I'm not on the list any more. <http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1318084983> Joe

23 years, 6 months

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Wyse WY-50

by pat＠purdueriots.com

I went to university salvage today, and along with a bunch of WY-60's they had one lone WY-50. If anyone is interested, I'm willing to ship it for what ever it costs me plut $5. Best guess, it'll cost $5 to purchase, but I have no clue how much to ship. I should be able to find packing material and a box around here for free, though. It it's wanted, I'll go Tuesday to pick it up. -- Pat West Lafayette, IN 47906

23 years, 6 months

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3com 3station

by jeff.kaneko＠juno.com

The 3Station was an early IBM compatible diskless workstation. They used a 12Mhz 80286 IIRC. The network boot protocol was proprietary to 3COM, but once you were linked to a disk image on a Server running 3+Share (and 3+Start) you could use any protocol that had drivers for the NIC on the 3Station. There were two version of the 3Station; the main differences being Video and maximum memory size. It seems like there were ROM's available that allowed you to use it on a Novell network, but I don't remember the details. I don't think using it as an X-Station is a good idea-- I strongly suspect you'll need a bit more muscle to do X. Besides, if it's the earlier model 3c1100 (very likely) it can only do EGA, MDA or (yeek) CGA. I still have a copy of 3+Share (and 3+Start) around here someplace . . . That remark about the 3Server needing constant attention was right on the mark. I lost quite a few nights sleep maintaining one of these beasties (my first SYSADMIN job). I could almost run the diags in my sleep after awhile. The backup system almost never worked. Jeff On Thu, 10 Jan 2002 18:06:55 -0600 Jon Auringer <auringer(a)tds.net> writes: > Hey Pat, > > Pat Finnegan wrote: > > > I just picked up a 3com 3station for a few $$ at university > salvage today. > > It seems to be a rather neat little system. Inside it has a > header (J9) > > that appears to be a floppy disk connector (34pin header). Does > anyone > > know anymore about these things or have software for it (it'd be > nice to > > use it as an Xterminal, but who knows if that'll ever work...) > > I don't have direct information on the 3station, but I do have a > 3server. The 3server is based on a 80186 processor. Luckily it was > pulled from service here before I took over. I recall that is was in > need of almost constant attention. I will see if the documentation I > have includes the 3station or any other pertinent information. Time > permitting, of course. :) > > Later, > Jon > > Jon Auringer > auringer(a)tds.net ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/.

23 years, 6 months

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More transputer auctions...

by rmeenaks＠olf.com

Hi, Check out the following transputer-based auctions running on Yahoo! I am NOT associated with this auction, contact the buyer for any details: Inmos B404 processing TRAM, this is a T800 transputer, 2MB dram with some static ram. http://page.auctions.shopping.yahoo.com/uk/auction/59758007 Processing TRAM, single size, with T425 transputer and 1MB DRAM, http://page.auctions.shopping.yahoo.com/uk/auction/59758028 Inmos B008 10 TRAM 16 bit ISA transputer motherboard for PC http://page.auctions.shopping.yahoo.com/uk/auction/59758052 Transtech TMB16 10 TRAM 16 bit ISA transputer motherboard for PC http://page.auctions.shopping.yahoo.com/uk/auction/59758161 Cheers, Ram -- ,,,, /'^'\ ( o o ) -oOOO--(_)--OOOo------------------------------------- | Ram Meenakshisundaram | | Senior Software Engineer | | OpenLink Financial Inc | | .oooO Phone: (516) 227-6600 x267 | | ( ) Oooo. Email: rmeenaks(a)olf.com | ---\ (----( )-------------------------------------- \_) ) / (_/

23 years, 6 months

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Reading PET tapes (was Re: Apple disk -> MSDOS)

by mhstein＠usa.net

As asked elsewhere: If I find it & Sellam doesn't, how would I get it to ya in a useful format? mike ------------------Original Message---------------- From: Bryan Pope <bpope(a)wordstock.com> Subject: Re: Reading PET tapes (was Re: Apple disk -> MSDOS) Ok then... Do you have "Phuzzy and Wuzzy go to the Moon"? It was a short "movie" for the PET. Bryan

23 years, 6 months

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IBM System/34...

by dhquebbeman＠theestopinalgroup.com

> my DEC Rainbow, miscellaneous PDP-10,PDP-11 and IBM manuals, and miscellaneous > office equipment. Then, after depositing the remains in the dumpster, they > called us out to observe their handiwork and ridicule us.) I don't know what I'd have done had this happened to me. But I recently saw the following .sig line that expresses an almost appropriate opinion: > W > . | ,. w , "Some people are alive only because > \|/ \|/ it is illegal to kill them." Perna condita delenda est > ---^----^--------------------------------------------------------------- Grrr.... -dq

23 years, 6 months

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What to do with an empty BA23

by classiccmp＠knm.yi.org

Hi guys, I'm sat here wondering what I should do with this empty BA23 I've got. I'd like to get another machine up and running, either VAX or PDP, but I don't have the bits :&) If anyone in the UK has any spare bits kicking about, I'd be intrested, if not, I might be able to arrange shipping from the US. If all else fails, anyone think of an alternative use for a BA23? :&) Otherwise it's just going to carry on what it's been doing so far - sat on the side gathering dust :&/ On another note - anyone in the UK with a spare QBus ethernet card (DELQA or such) they're willing to part with? I'd love to get my MVII on the network here :&) -- Matt --- Web Page: http://knm.org.uk/ http://pkl.net/~matt/

23 years, 6 months

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Apple disk -> MSDOS

by mhstein＠usa.net

Very useful indeed, although I do prefer an external P-S converter; cheap, nothing to build, and plugs into anything with a serial port. Also love those KB converters for an easy way to get contact closures or serial data into unfriendly PC apps. On a semi-related note, does anyone know of a program that can read a text file and send it to a Windows app as keyboard input like the DOS keyboard emulators of old? Or can I do that with the Win Scripting Host? mike -----------------Original Message-------------------- From: ard(a)p850ug1.demon.co.uk (Tony Duell) Subject: Re: Apple disk -> MSDOS A fairly useful thing to have/build is a computer with a parallel 'printer' input. <snip>

23 years, 6 months

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Musicians (and computer music)

by mhstein＠usa.net

Don't I recall correctly that someone (Jay?) tracked him down in Korea, but that he was going to be back soon? mike -----------------Original Message-------------------- From: Ethan Dicks <erd_6502(a)yahoo.com> Subject: Re: Musicians (and computer music) <snip> >>Hal Chamberlin <snip> >> Maybe he's got something to contribute to posterity when he gets >> back from Korea. >Korea?

23 years, 6 months

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Continuing PDP11 saga

by pete＠dunnington.u-net.com

On Jan 9, 20:54, Tom Leffingwell wrote: > Besides being able to map memory up to 2MW, is there any advantage > to being 22-bit over 18-bit? Not that I can think of. > Also, can you think of any cheaply available Q-bus module that I > could set the address of to match the ADV11? I called 3 surplus places, > all of whom wanted $750 - $1,000 for their ADV11's! I talked one guy down > to $350 for one with a bad A-D converter, but was still addressable. > That's still a lot, especially for a broken board. Ouch! Sorry, I can't think of anything else offhand. Besides, if the software is checking for the presence of the board, it might write some initialisation value to it and try to read its status back. That would most likely fail if you had the wrong device at that address. -- Pete Peter Turnbull Network Manager University of York

23 years, 6 months

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What to do with an empty BA23

by spedraja＠ono.com

Somebidy has one unused rackable BA23 for sale/trade/donate ? (Whispering) Greetings Sergio -----Mensaje original----- De: Matt London <classiccmp(a)knm.yi.org> Para: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org> Fecha: viernes, 11 de enero de 2002 0:07 Asunto: Re: What to do with an empty BA23 >Hi, > >> > If all else fails, anyone think of >> > an alternative use for a BA23? :&) >> According to: http://world.std.com/~bdc/projects/vaxen/vaxgeektop10.html >> Is it the blank rackmountable case, or do you have the plastic revetment >> with foor stand? If yes put a pillow on it and you have a nice seat. >> That was what I used my BA23 for at the LinuxTag 2000. I had a MV II in >> it running 4.3BSD-Tahoe. Quite funny. Especially as it attracted other >> geeks. (Including a bearded man with a RedHat... :-) ) > >Nah - it's rackmount :&) > >I met / chatted to a bearded man with a RedHat after Linux Expo 2000 in a >pub - it was Alan Cox :&) > >-- Matt > >--- >Web Page: > http://knm.org.uk/ > http://pkl.net/~matt/ >

23 years, 6 months

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"Locking Connector Kits" for LocalTalk

by spectre＠stockholm.ptloma.edu

Today, I received my neat-o thing for the week, an ISA card for LocalTalk, the software, and an Apple LocalTalk Locking Connector Kit for DB-9 (don't beat on me for calling DB-9, that's what the package sez, 'k? :-). Elation rapidly turned to consternation when I realised the connector box doesn't take the PhoneNET wiring, of which I have scads, but rather the annoying Apple four-conductor locking-style cables. Anyone out there have some converter box that will allow me to plug my existing PhoneNET wiring into this? I'd like to get the PC speaking LocalTalk to the apartment LocalTalk segment, and if possible, I'd like to get the Commodore on it also with this (being ignorant of the major differences, the Commodore's SwiftLink has a regular RS-232 9-pin DE-9 on the end ... could the Apple "DB-9" kit plug directly into that?). -- ----------------------------- personal page: http://www.armory.com/~spectre/ -- Cameron Kaiser, Point Loma Nazarene University * ckaiser(a)stockholm.ptloma.edu -- FORTUNE: Don't abandon hope: your Tom Mix decoder ring arrives tomorrow. ---

23 years, 6 months

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test

by uban＠ubanproductions.com

please ignore

23 years, 6 months

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Convergent Technologies Workstation password recovery/reset

by celt＠chisp.net

Picked up this beast at thrift store this morning. It's a Convergent Technologies Workstation made by Unisys. Powering it up produces the following (my added comments in parentheses): T *************** L (hard disk activity begins here, LED '1' lights up) ................................... ................................... ................................... ................................... ..... (screen clears) a240MstrpMP-9.1/00 (screen clears) SysInit 9.15 There will be a momentary delay as the system now begins loading $JOB Sysinit,, Execution begun: Sat Mar 1, 1952 12:00M $RUN [d0]<sys>InstallQMgr.run Termination status code: 0 $RUN [d0]<sys>InstallSPL.run Termination status code: 0 $Run [Sys]<Sys>SPrint.run (4 beeps here) Termination status code: 0 $END Execution ended: Sat Mar 1, 1952 12:00M (screen clears) SysInit 9.15 LUTHERAN SOCIAL SERVICES OF CO System Signon User Name Password Date/Time ----- There's a reference to a company in Minnesota called Service Information Systems, but their number has been disconnected. Probably dead or bought out and absorbed years ago. A Unisys Service Identification tag on the back of the CRT has: Service Number TP-191050 Style Number OM-1001 ZZ and a tag at the base of the unit has: Convergent Technologies Workstation Product Number 99-01640 Serial Number A-26671 This is mounted next to a tag stating 'No User Servicable Parts' (along with dire warnings about voiding your warranty, burning your extended family at the stake, and having your knees broken with baseball bats by guys with crooked noses named 'Vinny', should you dare to open the case.) I'd like to be able to clear the original owners' information off the drive and start over, but I'm unfamiliar with the OS and haven't had any luck getting past the login. Unisys has remade itself as an e-Business Solutions Provider, and their website has no useful information; a call to their tech support produced responses of 'Uhhh...' and 'You have a what?' along with muffled laughter. I think the 'a240MstrpMP-9.1/00' means that it's running CTOS 9.1, but I haven't been able to dig up any useful info on the unit itself, or the OS. Any ideas? Mike http://tarnover.org The Apple II Repository

23 years, 6 months

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OT: DELL SUCKS! Re: PC Gamer, best 50 classic games issue?

by mythtech＠Mac.com

>We have a local computer shop that (last week) had as-is 3c589 NICs >for $5, but no dongle. I bought a couple spares, and a Xircom PS-CEM-28 >(also no dongles). Hopefully the 10BaseT dongle I have for another >Xircom card will work (the 100BaseT dongles _are_ different). I saw some generic dongles down at the CompUSA a little while back. They were $25. The blister pack said it worked with 3com and other PCMCIA cards. I used it successfully with a XIRCOM 10bt/56k modem card (only with the Ethernet half... modem used a different connection, but that looked similar to the one that fit in my old ActionTec modem, I just never got around to trying it). The dongle also said it worked with 10/100 ethernet. There are no markings on the dongle of value (it is here in front of me) so I can't tell you the brand, but I do know for sure I bought it at CompUSA -chris <http://www.mythtech.net>

23 years, 6 months

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ENIAC [Was: Re: Appropritate comic strip....]

by msell＠ontimesupport.com

Has anyone ever attempted to recreate all or part of the ENIAC? Maybe as part of a CS project or museum? Just curious..... - Matt At 11:45 AM 1/10/2002 -0500, you wrote: >Have a look at this comic strip... (Wednesday's strip) > >http://www.rockwoodcomic.com/ > >--- David A Woyciesjes >--- C & IS Support Specialist >--- Yale University Press >--- mailto:david.woyciesjes@yale.edu >--- (203) 432-0953 >--- ICQ # - 905818 Matthew Sell Programmer On Time Support, Inc. www.ontimesupport.com (281) 296-6066 Join the Metrology Software discussion group METLIST! http://www.ontimesupport.com/cgi-bin/mojo/mojo.cgi "One World, One Web, One Program" - Microsoft Promotional Ad "Ein Volk, Ein Reich, Ein Fuhrer" - Adolf Hitler Many thanks for this tagline to a fellow RGVAC'er...

23 years, 6 months

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OT: DELL SUCKS! Re: PC Gamer, best 50 classic games issue?

by mythtech＠Mac.com

>I really think the cheaper the hardware is, statistically >speaking, the more problematic it will be. Lower selling >cost goes hand in hand with less competent and lower paid >designers, programmers ( for device drivers ), smaller >support staff, less design and testing time alloted, minimalized >QC, etc. Agreed 100%, but when you factor in that 99% of the problems with a windows PC is caused by windows, then the lower quality hardware starts to not matter. If I was building an "intel" PC for use with something other than windows (or with something that quality makes a difference, like a mission critical server), then I would advise quality parts. I also take a totally different stance when it comes to buying a "business grade" PC. My advice points are strictly geared towards the consumer level, home PC, running the latest home user version of windows. For the average joe consumer, that can't understand what right-click means... then the cost invested in higher quality parts is a waste of money in my book. The only parts that I avoid like the plague are motherboards made by PC Chips. I have found them to be highly unreliable. But even with those, almost always, the problems occur out of the box, so the problems will appear within days of buying the machine, so since it was bought local (one of my stipulations for the average joe consumer), they can take it back and usually get it worked out. Also, when it comes to MY windows PCs, I use certain brands that I have had good luck with. I pay a bit more for certain things, to eliminate some possible headaches. But I know enough to build my own (something I recommend others do if they want a windows PC... right after I tell them to buy a Macintosh). By learning how to build it themselves... then they can track down better parts, and when things go wrong, won't be so helpless to getting them fixed. It will also translate to more stable systems as they have a better idea of what to do and what not to do. (my home PC cost me next to nothing, has decent quality parts, with money spent where it matters, and is rock solid running windows ME, which is almost an amazing thing in its own right) >I've often said, windows is a pretty good operating system, >until you put some programs on it. Is it the fault of windows >itself, or is it less than perfect programming on the part >of the third party companies that write the additional programs, >the device drivers, etc that we use, to write their software >to be rock solid running over windows? Ok, you are right, I think most of the windows problems are due to the applications and not the actual OS. But again, to the average consumer, there is no difference between it being an OS problem and an application problem. It just isn't working. >I have a feeling that if one >were to set up a windows machine with the best quality hardware >they could get, and use primarily only microsoft operating >systems and applications, they won't have near as many problems >with it. I have computers built with high quality hardware and ones with the cheapest crap I could find (including in many cases things I pulled from someone's trash). For the machines that run only windows, and MS applications... I have seen no noticable difference in stability. And actually, I find MS applications to be one of the LARGER offenders of crashing windows. It is not unusual for me to see MS Office being the only app installed on one of my Windows boxes, and see it crash all by itself. I have also had many problems with exchange crashing right after a default install... and problems with other MS software screwing up windows. I just chalk that up to painful irony (but at least you can't say MS is withholding info so that other apps crash, forcing everyone to use MS apps as the only stable apps... since theirs are just as, or more so, unstable than many 3rd party apps). >I find the motherboard is the heart of the system. I only >consider a mainboard from a company that has a web site >with docs, bios updates, etc online. Usually better quality >productions. I used to see the booklets that came with a mobo >that didn't even say what company produced them. We called >them ROCs, as in made in Taiwan, Republic of China. But >actually they started producing some very good quality stuff >in Taiwan, but then when we got more friendly with China, >some manufacturing moved there, to again lower the costs. >I avoid computer components made in China like the plague. I have found an amazing number of these cheap unlabeled mobos to be tracked back to PC Chips. I think at my last count, they were selling under something like 16 different names. And all of them were the same, crappy ass motherboard. I personally have found ASUS to be decent for the price, and so far have had fairly good luck with them (now that I said it, they are all going to blow up tomorrow... I just know it!). Alas, crappy MBs are a risk in cheap PCs... but at least in my experience, all the bad cheap ones I have dealt with, died very early on... so again, it is something that can get ironed out with the dealer. I think my point boils down to this: if you are going to buy a Windows PC, you are in for a long run of headaches and problems. So do you want them to be $2000 headaches, or $500 headaches? -chris <http://www.mythtech.net>

23 years, 6 months

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IBM System/34...

by DSEAGRAV＠toad.xkl.com

I need to get my hands on disk images of the microcode, SSP, and RPG II diskettes for an IBM S/34. I have the diskettes and a running PDP-11 with an RX02, but the S/34 uses a funny sector size and so the RX02 cannot read them. SSP version 8 would be nice but any version will work. My intentions are to write a software emulator to replace the System/34 that was maliciously destroyed in December by SSI Inc. (Long story there, short version: Hostile corporate takeover, hostile management forces old management out, uses building maintenance to gain access to a private storage area used by the old management and myself, and destroyed all equipment and data stored there, which included a S/36 and S/34, both in perfect running condition, my DEC Rainbow, miscellaneous PDP-10,PDP-11 and IBM manuals, and miscellaneous office equipment. Then, after depositing the remains in the dumpster, they called us out to observe their handiwork and ridicule us.) If anyone can either generate disk images on their own, or somehow read the disks I have (Or even better, tell me how to read them with my RX02) I would be very grateful. I am well-armed with documentation for the emulation project, I have system logic diagrams, descriptions of the micromachine, circuit prints, and all sorts of IBM manuals that I am probably not supposed to have. ^_^ Please mail dseagrav(a)lunar-tokyo.net with responses as I am not able to check this email address very often. Also, I will say now that I am unemployed and cannot pay for commerical data-conversion services. -------

23 years, 6 months

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Bought an IBM 5362 -- so now what do I do with this thing?

by out2sea00＠yahoo.com

Dave, Charles and Folks -- Let me share what little I do know in case you haven't seen this yet. IBM makes very little reference to these systems. System/36 is mentioned on their corporate history page. It's a direct ancestor of the AS/400 series. The only specific information they have comes from their sales manual. * Search: http://www.ibmlink.ibm.com/ussman&parms= Our models are described this way (cribbed from above) : 5360 Multiple workstation system with multiprogramming capability. o 30 - 1432MB HDD o 128K - 7Mb RAM o 8 inch 1.2MB diskette o 36 - 72 local workstations 5362 System unit o 256K - 2MB RAM o 30 - 660MB HDD o 8 inch 1.2MB diskette o 28 local workstations o 64 remote workstations 5363 System/36 and Application Systems/Entry System Unit Compact, low-cost, floor-standing system that runs existing System/36 application programs without recompilation. o 1.0 - 2.0Mb RAM o 5.25 1.2Mb diskette o 65 - 1256Mb HDD o 28 local worstations o 64 remote worstations 5364 S/36 PC is a combination of the 5364 System Unit and a directly-attached IBM PC. The 5364 System Unit is a smaller, lower cost, floor standing or desk-top system that will run existing S/36 application programs without recompilation. The personal computer can run personal computer programs as well as act as the first S/36 workstation. o 256K - 1.0MB RAM o 5.25 inch 1.2Mb diskette o 40, 65, 80 or 130MB HDD o 6-9 local workstations (later upgraded to 16) The 5360 family has a multiple processor architecture. The main storage processor is an enhanced S/34 instruction processor. A control storage processor operates in parallel with the main storage processor, and provides microcoded control function for the I/O processors and interfaces. The processors use LSI (Large Scale Integration) for the logic circuitry. Storage technology is MOSFET (Metal Oxide semiconductor Field Effect Transistor). Data and instructions are stored as EBCDIC characters. Each EBCDIC character is stored in an 8-bit byte. ECC (Error Correction Code) is maintained in main storage. Single-bit error correction and double-bit error detection is performed on every two bytes. Parity is added for all data transfers to and from main storage. Now you know all I know. Help! Anything else would be greatly appreciated. Thanks, Colin Eby Senior Consultant CSC Consulting __________________________________________________ Do You Yahoo!? Send FREE video emails in Yahoo! Mail! http://promo.yahoo.com/videomail/

23 years, 6 months

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PS/2 Model 70 Portable

by out2sea00＠yahoo.com

>...Okay, I've decided that I'm not going to fool around with this PS/2 any more, as it really isn't the type of thing I collect. Is anyone interested in it for $20+shipping? - -- Eric Dittman ...< Eric -- Abso-blinking-lutely. I've been watching out for one of those. I have this perverse fantasy about using one for a 5250 emulator. Email me off list and I'll make whatever arrangement you need. Thanks, Colin Eby Senior Consultant CSC Consulting __________________________________________________ Do You Yahoo!? Send FREE video emails in Yahoo! Mail! http://promo.yahoo.com/videomail/

23 years, 6 months

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test-drb January 2002