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

Are the HP9100 and HP9810 calcualtors really RPN machines?

by ard＠p850ug1.demon.co.uk

Subjet: line says it really, but I think I should explain... Are the HP9100 and HP9810 calcualtors really RPN machines? I think not. You ahve 3 registers, called X(Keyboard), Y(Accumulator) and Z(Temporary) which appear to be a stack. But it;s not really as stack IMHO. Entereing a number form the keyboard puts it in X, leaving the other 2 registers unaltered. At no time is there an automatic stack lift (AFAIK). THere are functions to effectively push and drop the stack (if it is one:-)) and to roll it round. Arthmetic operations perfrome something like Y:=Y(OP)X. Again, there is no lift or drop, there is no change to any register other than Y. 1-number operations normally do X:=f(X), at least one does Y:=f(Y), though. Again nothing else is changed, no lift or drop. You can get the user manuals from the Austalian museum site if you want ot read up on this... My (considered?) opinion is that it's certainly a postfix machine in that you enter both numbers into Y and X before doing an arithmetic operation. But becuase of the lack of automatic stack operation, it's not an RPN machine? What about the other 'RPN' desktop machines (friden, etc) Any thoughts? -tony

14 years, 11 months

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DEC VT330 and LK250s on Ebay

by dave＠mitton.com

I have the following on eBay, ending this weekend VT330 Item # 330613186993 LK250 keyboards: # 330607337643, 330607337630 Hmmm... have to go fix the photos. I am cleaning the basement, I will have a bunch of DEC ephemera and random databooks from the late 1970s, for the cost of shipping. Will list a link some time when I can put together a list. Dave.

14 years, 11 months

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ASR 33 For Sale - Fully Restored

by billdeg＠degnanco.com

(I am passing this along for a friend who restores and sells teletypes) "..It has been serviced, tested in local and line mode and is in excellent operating condition. Only the motor gears, belt, oil pad and rubber hammer were replaced to bring it up to like new operating condition. It has an even parity keyboard. This is the nicest 33 I have seen in many years. The only thing that keeps it from being perfect is a few minor nicks on the cover and some scratches on the pedestal. No copyholder is included, but a source for them is available if one is desired. This 33 has a rare lighted lid w/window Teletype option. If this option is not desired, the lid will be replaced with another very nice one. .." Pictures: http://vintagecomputer.net/wayne/Description_and_pics_of_Sept_2001_33.pdf $1200 Please email teletypeparts-at-aol.com if you have any questions.

14 years, 11 months

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DEC Floppy drive DS-53A

by cclist＠sydex.com

Does anyone have the specs for the JPN DS-53A half-height 5.25" floppy drive? Apparently it was used on some Digital equipment, as units with DEC branding exist. The web is conflicted--either it's a 360K or a 1.2M drive. I'm wondering if it's just an RX50 clone in a half-height package and SS 96 tpi double-density. Does anyone know for certain? Thanks, Chuck

14 years, 11 months

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Model M screws

by dgriffi＠cs.csubak.edu

Does anyone know where I can find replacement case screws for an IBM Model M keyboard? -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

14 years, 11 months

2
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AT&T unix PC

by billdeg＠degnanco.com

> On 9/12/2011 10:42 PM, Dave McGuire wrote: > > The machine is in fantastic condition. -Dave > > Umh, it is badly yellowed, water damaged, and has a big crack in the > case. I guess I just have a different idea of 'fantastic'. The > original boxes is the only cool thing I see at all and they are messed > up from water damage. > > They all came with manual sets. They are super common with complete > systems. No other way to read the docs back then. All scanned online now > along with all the software. The extra packages too. All on bitsavers. > > $500 for this is nuts. People give them away all the time and the few > I've seen pass through ebay go for maybe $150 or so in much better shape. > I have to agree, the condition is not good enough to pay $500. Also there is no DOS card included. I am of course biased, I got my system for free. Bill

14 years, 11 months

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cleaning and maintenance for an ASR33

by starbase89＠gmail.com

Hello. I have an ASR 33 teletype that I am trying to clean up and make it run well. It does work. I plan to have it hooked up to a PC via a current loop to RS232 adapter and have HeavyMetal feeding it text. It is very dirty. I replaced the ribbon. Basically, here's what I'd like to know: What parts need to be cleaned and/or lubricated? How do I clean out the paper tape punch scrap container? Can I use compressed air to remove dust, or would that cause damage? Thanks much Joe

14 years, 11 months

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Interesting email addresses of old...

by tshoppa＠wmata.com

For my first 4 years with E-mail I was only on DECNET/HEPNET. So DECNET style E-mail addresses for me (TDS222 at IOWA and TSHOPPA at FNALF). Later on, some of my BITNET E-mail addresses from the 80's and early 90's are found when I google myself. Some of these were on the same VAXes via BITNET gateways, others were on PRIMOS machines on BITNET, a couple were genuinely on IBM hardware and then later Amdahl hardware. I really struggled with the IBM user interfaces :-). I did use UUCP forwarding on several occasions but I never thought of the bang-path as "my E-mail address". Amazingly enough several of the LISTSERV's that I subscribed to/posted to back in the 80's still exist today in one form or another. Some were surprisingly hard to find but they're still there.

14 years, 11 months

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Desoldering (Again)

by jonas＠otter.se

On Sun, 11 Sep 2011 17:49:50 +0100 (BST), ard at p850ug1.demon.co.uk (Tony Duell) wrote: >> I then put the pliers down and lift the IC with my fingers. >> >> If you can't lift the IC with your fingers you have not release all the >> legs, don't try prying - this only leads to tears and swearing... > I find that uyou can prise (pry) the IC looks after breaking the bond > between each pin and the CPB, but the trick is to know jsut how much > force you can safely apply without damaging either the IC (it is possible > to crack the DIL package and rip pins out) or the PCB. Prising can be > very useful to sdee which part of a large DIL pakacge seems ot be free > wnas whcih pios might still be holding it (and thus need resolderign and > desoldering again). Just take great care! > > I find that one needs to be very careful when prising, it is all too easy to rip out the through-hole plating. It may not be a disaster but sometimes it is very hard to solder the new IC on the component side. /Jonas

14 years, 11 months

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AT&T unix PC

by teoz＠neo.rr.com

http://www.ebay.com/itm/Vintage-AT-T-Unix-PC-keyboard-mouse-lots-software-W… check out all the UNIX software and manuals this thing comes with, is that what these old systems shipped with?

14 years, 11 months

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Seattle Retro-Computing Society's monthly meeting Saturday, September 17th, 2011

by glen.slick＠gmail.com

[forwarded on behalf of SRCS] Come one, come all, to the Seattle Retro-Computing Society's monthly meeting, on Saturday, September 17th, 2011! Do you do any of the following with old computers near Seattle? + Use, collect, and/or restore them + Play games on them + Write programs for them + Develop new hardware for them + Help other people do any of the above If your answer was "yes," as I expect it will be if you're reading this near Seattle, then the SRCS is for you! We exist so you can show off your awesome stuff, bounce ideas off of fellow enthusiasts, and be inspired by one another's achievements, plans and aspirations. No idea is too big or too small, and we're not picky about what flavor of vintage machine you prefer! Come on down and tell us about it! The meetings are graciously hosted by the Living Computer Museum, a relatively new organization which is building a computer museum in Seattle's SODO neighborhood. There will be refreshments, a Buy-Sell- Free-Trade table, and enough table space & power to set up anything you may want to show off! For further details, please see our newly improved web page at http://www.seattleretrocomputing.com/ and our mailing list at http://groups.google.com/group/seattle-retrocomp . Hope to see you there! (Please note, we usually meet on the fourth Saturday of each month; we had to move it up a week this month because of schedule conflicts with retrocomputing events in other cities.) Gordon "gsteemso" Steemson SRCS agitator-in-chief

14 years, 11 months

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What is DEC W9042 for

by pontus＠Update.UU.SE

Hi I was just offered two "extender boards" which looks to fit QBus. They look like this: http://www.update.uu.se/~pontus/slask/IMG_5090.JPG My own theory is that they fit the UNIBUS -> QBus converter I got with my GAMMA-11 from the same souce. Regards, Pontus

14 years, 11 months

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at&t 3b1, pc7300

by emu＠e-bbes.com

Hi all, acquired few boxes with 3b1 & pc7300 stuff. Anybody is looking for parts or complete units? Cheers, emanuel

14 years, 11 months

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Not usual Kaypro

by spedraja＠ono.com

Pretty, pretty... http://www.ebay.co.uk/itm/Insanely-Rare-SYNERGY-II-SYNTH-w-Kaypro-Computer-… Sergio

14 years, 11 months

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S-100 buffered prototyping board PCBs

by lynchaj＠yahoo.com

Hi, I have several S-100 buffered prototyping board PCBs available.? They are $20 each plus $3 shipping in the US and $6 elsewhere. Technical information available here http://s100computers.com/My%20System%20Pages/Prototype%20Board/Prototype%20… http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=S-100%20buffer… Please contact me if interested.? Thanks! Andrew Lynch

14 years, 11 months

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Desoldering (Again)

by robert.jarratt＠ntlworld.com

(resending from a different account, apologies if this is a duplicate) I have a 16-pin IC to desolder and I am struggling. Since I last asked about desoldering I have got a lot better with a de-soldering pump and can now clear the hole in the sense that I see a black hole rather than solder, and I can see daylight through all the holes (but for most of the holes this is only if I angle the board the right way). However, in this case the solder seems to be going all the way through and slightly onto the component side surface where I can't get at it with the pump. I have jiggled the pins to try to break any last bits of solder, but the chip is still very solidly attached. Any advice? Thanks Rob

14 years, 11 months

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printers was: DiscFerret disc analysers for sale!

by jonas＠otter.se

On Sat, 10 Sep 2011 20:42:42 +0100 (BST), ard at p850ug1.demon.co.uk (Tony Duell) wrote: > Sure, it;s the HP9866A > > ... Amazing what can be done in 32 bytes... >>> You know full well that financial value is not a reason for collecting >>> something. >> Unfortunately that is not the case for those transatlantic gentlemen who >> spend their time on eBay buying "rare gold computer chips" for insane >> amounts of money, driving up the prices for the rest of us :-( > Yes, you're right, there are some people who appear to collect as an > investment. Personally I think there arre safer things to invest your > money in, and I think that classic computer hardware is much more > interesting when it is put into operation. > Oh, absolutely, why can't they just collect gold or something and leave the old cameras, computers and so on to those who actually take an interest in the things. /Jonas

14 years, 11 months

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Anyone interested in an AT&T 6300?

by cclist＠sydex.com

Anyone interested in an AT&T 6300? Got one with monitor, keyboard and printer. Did have a full set of manuals, but someone bought those. If no response by tomorrow, I'll consider it e-junk. --Chuck

14 years, 11 months

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Nixdorf 8810 M15

by tiina＠finntrans.com

Hello, Before discarding my good ol' Nixdorf laptop I thought I would check if anyone would like to have it. I is pretty heavy (18 lb), so mailing it would not be cheap, but I live in the Dallas area should there be a collector nearby. Please let me know what you think. Thank you, Tiina Fallini, MA ATA Certified Translator and Interpreter English <> Finnish <mailto:tiina at finntrans.com> tiina at finntrans.com <http://www.finntrans.com/> www.FinnTrans.com 817.399.0246 (CST)

14 years, 11 months

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Soldering stations - OKi-Metcal, Pace or something else?

by geoffr＠zipcon.net

On 9/11/11 5:46 PM, "Bill Sudbrink" <wh.sudbrink at verizon.net> wrote: > Philip Pemberton wrote: >> - Pace ST50 + TD100. Seems about the same as the WJS100, but will >> run the tweezer handpiece and a wider variety of bits. Catch is, I'd >> have to special-order this from Pace UK if I wanted the ISB option >> (Farnell don't stock the ISB "cubby" / iron stand). > > Well, I can't say enough good things about the second hand Pace ST45 that > I use. A real joy. > > Bill I'm pleased with the Hakko 936 I use for most of my soldering. The temp control has been very accurate and I've been using the heck out of it for the last few years. It is better in some ways than the $500+ hot air and iron rework station that I have.

14 years, 11 months

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FS (MA-USA): DEC Y SCSI, Alpha book--the paper kind, Konexx acoustic coupler, HP 1630D LA, DAT DDS3

by jtp＠chinalake.com

Clearing out; a few items for sale. Remainders posted on ebay next week. Photos at: http://www.flickr.com/photos/31439100 at N05/sets/72157627525411857/ Location: Metro-west Boston, MA US, ship from 01888 Check/MO preferred, ppal if most convenient - DEC SCSI Y cable BN21V-0B Rev A02 No dings, dents, bent pins $25 + ship (~14 oz) - Book, new condition: Alpha Implementations and Architecture 1996 Digital Press ISBN: 1-55558-130-7 39.95 sticker on the back, probably from SoftPro MA if they weren't closed by then $15 + ship (~1.5 lb padded envelope or box, std or media mail--your call) - Konexx Koupler, Acoustic Coupler Works, great cosmetic shape: functional or for collector This is the early blue unit--"patent pending" Used to use this when traveling in odd spots, worked well at a speedy 2400 These are apparently still made by Konexx http://www.konexx.com/ $30 + ship (~14 oz) - Adaptec 1740A EISA SCSI card Worked when shelved long ago, manual may be around eisa descriptor files--on your own $0 + shipping costs (<1 lb) - HP 1630D Logic Analyzer Used (really), working, old critter so I won't guaranty a lifespan This was two different units--last of the spares. The power supply was repaired at some point--usual fuse holder wall bang among other things. The new fuse holder is mounted to the chassis rather than the power board, but is connected with insulated terminals allowing easy removal of the board. Has the most recent ROMs I had in stock. One set of flying leads, full row so you can use as either state or timing The leads are passive, thus you can make additional sets. I really am not interested in shipping this--getting larges boxes, etc. $20 local pickup, or possibly delivery for nominal $. - Sony SDT-S9000 External DAT DDS3 12/24 Tape unit Excellent shape. No spare media--shredder, have a cleaning tape or two. Same unit posted a few months ago that a few interested folks never followed up on. AMP ends, includes a terminator, let me know if you need a cable and what ends (nominal$) $25 + shipping (~6 lb) --Jim

14 years, 11 months

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Choosing a USB RS232 converter

by dgriffi＠cs.csubak.edu

Lately I've been wanting to do RS232 stuff with my laptop instead of desktop machine. Would someone please recommend a good USB-to-RS232 converter? -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

14 years, 11 months

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HP 7470A plotter -- repairing/replacing paper feed rollers

by classiccmp＠philpem.me.uk

Hi guys, I've just acquired a HP 7470A in a lot with some other gear, and it seems the rubber paper feed rollers have deteriorated somewhat. They've acquired a gummy consistency, and are covered in flat spots... Has anyone managed to find a source of replacement rollers, or a way to repair those installed in the plotter? Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

14 years, 11 months

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Clearing out '90s PC stuff (UK)

by ljw-cctech＠ljw.me.uk

I'm having a clear out, so before this goes to the recycling, does anyone want any of it? Free for collection! All in the UK (South Northants / North Oxon, nr Banbury OX17) or could get them to London in the next week, or York/Manchester next month. As far as I know everything worked, but it's been a long time since I used most things so no warranty. If you want to know anything more, just ask and I'll do my best. Serial I/O Advantech PCL841 Dual-port CAN card ISA16 Dual RS232 (DB25) ISA8 Dual RSRSR (DE9) ISA8 Analog-Digital Arcom PCAD12/17H ADC ISA8 (RS P/N 255610) NICs Intel PRO/100 NIC PCI Intel PRO/100S NIC PCI 3Com 3C900 NIC PCI 3Com 3C905 NIC PCI Sound Creative Soundblaster 128 PCI Soundblaster MIDI cable w/ Sequencer Plus software (5.25"+3.5") CPU ASUS P2B-S ATX Slot 1 motherboard w/ U2 SCSI + Slot 1 / Socket 370 adapter + Celeron 900MHz + fan + RAM Thermaltake fan for Socket 370 Celeron 366MHz Arctic Alpine64 fan for Socket 939 Video Matrox Millennium G200 8MB AGP Elephant EC-DS3-4 S3 Virge VGA PCI Newer gadgets BudgeTone-100 SIP phone iRiver H320 20GB player USB-to-IDE44 adapter incl power supply Software AutoCad R10 incl manuals, dongle & tablet overlay Autodesk Autosketch V1.02 (5.25") Drives IBM Ultrastar IC35L018UWPR15-0 U3SCSI 18GB 15krpm 2 x IBM DDRS-34560 U2SCSI 4.5GB 10krpm OS/2 OS/2 2.1 OS/2 Warp 3 OS/2 Warp 4 C/Set++ 2.1 KASE:Set Novaback -- Lawrence Wilkinson lawrence at ljw.me.uk The IBM 360/30 page http://www.ljw.me.uk/ibm360

14 years, 11 months

2
1
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Timeworks Desktop Publisher and Textcraft

by dgriffi＠cs.csubak.edu

I have Timeworks Desktop Publisher for Atari ST (docs and disks) and Amiga Textcraft (docs only) that I need to get rid of. Free for shipping from 93306. Weighs 5 pounds. -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

14 years, 11 months

1
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DECstation 5000/120 bad power supply...

by bdwheele＠indiana.edu

It looks like the power supply to my decstation 5000/120 is shot. The storage expansion, which is connected to the the switched C13 on the power supply, powered up as expected but nothing on the box itself. There was a bit of a smell, but no magic smoke :) So how hard is it to repair a power supply for this? My soldering skills are mediocre at best. Should I bite the bullet and turn it into this monstrosity: http://web.archive.org/web/20041210172801/http://www.xanthos.se/~joachim/DS… Its really not been my week with my DEC equipment. I almost hesitate to power up my vaxes! Brian

14 years, 11 months

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printers was: DiscFerret disc analysers for sale!

by jonas＠otter.se

On Thu, 8 Sep 2011 21:03:24 +0100 (BST), ard at p850ug1.demon.co.uk (Tony Duell) wrote: > That/'s why, incidentally, in a couple of days time I am demonstating > a printer that's almost 40 years old, taking it apart to show the > internals, nnd describing the intricacies of the control system (it's > beautiful, and to think the ROM is only 32 bytes long...) Please tell us which one :-) > You know full well that financial value is not a reason for collecting > something. Unfortunately that is not the case for those transatlantic gentlemen who spend their time on eBay buying "rare gold computer chips" for insane amounts of money, driving up the prices for the rest of us :-( /Jonas

14 years, 11 months

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Kilobaud Micro, October, November 1979?

by evan＠snarc.net

>>> I definitely have the Percom LFD-400, still working, in my SWTPC 6800. Nice to see another fan/user here. Chris Hi Chris. Sorry if this is redundant, but, are you new to our list? If so, then please introduce yourself. Interests, how you found out about us, location, etc. -- thanks.

14 years, 11 months

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Kilobaud Micro, October, November 1979?

by chrise＠pobox.com

On Friday (09/09/2011 at 02:00PM -0400), Bill Sudbrink wrote: > Hi, > > Does anybody have a copies of the October and November 1979 issues > of Kilobaud Microcomputing that they would be willing to scan an > article from? I can't seem to find on the net anywhere. I would > like to read: > > Thoughts on the SWTP computer system. Part 6. A close look at three > of the six disk systems that are available for the SWTP. They are: > LFD-400 from Percom, BFD-68 from Smoke Signal Broadcasting and MF-68 > from SWTP. > KILOBAUD MICROCOMPUTING #34 Oct 1979 pg. 30 > > Thoughts on the SWTP computer system. Part 6 (continued). An in-depth > look at the Percom LFD-400 disk system. > KILOBAUD MICROCOMPUTING #35 Nov 1979 pg. 86 > > Maybe also, this if you are feeling generous: > > Product review of Percom's LFD-400 floppy disk system for the SS-50 bus. > KILOBAUD MICROCOMPUTING #26 Feb 1979 pg. 80 I'm not sure if I have the KILOBAUD issues-- I will check-- but I definitely have the Percom LFD-400, still working, in my SWTPC 6800. Nice to see another fan/user here. Chris -- Chris Elmquist

14 years, 11 months

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DiscFerret disc analysers for sale!

by classiccmp＠philpem.me.uk

I'm sure most of you are probably aware of my DiscFerret disc analyser project: http://www.discferret.com The Cliff Notes: it's an enhanced, ground-up-re-engineered Catweasel-type disc analyser, with a USB interface, more accurate data sampling, and ST-506 disc support (with an adapter board). All the design files and source code can be downloaded freely from the website above, and are licensed under OSI-Compliant open-source licenses. I'm doing another hardware production run in the next week or so. I have 25 blank PCBs ready to assemble, and parts arriving on Monday to assemble them. For extra bonus points, I managed to get a good deal on the power supplies -- these are now ?5 cheaper while stocks last! Prices are: - Fully assembled and tested unit, no cables or PSU: ?139 - Cable kit -- supports up to two drives, 3.5 or 5.25-inch, PC- or Shugart-style (34 pin edge connector or pin header). Power is supplied >from the DiscFerret. Add ?10 - Power supply - add ?22.50 - Shipping -- fully tracked and insured! UK mainland -- ?7.50 Europe -- ?15 USA -- ?17.50 Unfortunately there's not a lot I can do about the international shipping charges... I'm looking into alternatives... To order -- email me at philpem at philpem.me.uk, and I'll send you an invoice for the total. Payment is via PayPal, or BACS / Faster Payments transfer (the latter for UK customers only). Thanks! -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

14 years, 11 months

11
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Kilobaud Micro, October, November 1979?

by shumaker＠att.net

On 9/9/2011 11:00 AM, Bill Sudbrink wrote: > Hi, > > Does anybody have a copies of the October and November 1979 issues > of Kilobaud Microcomputing that they would be willing to scan an > article from? I can't seem to find on the net anywhere. I would > like to read: > > Thoughts on the SWTP computer system. Part 6. A close look at three > of the six disk systems that are available for the SWTP. They are: > LFD-400 from Percom, BFD-68 from Smoke Signal Broadcasting and MF-68 > from SWTP. > KILOBAUD MICROCOMPUTING #34 Oct 1979 pg. 30 > > Thoughts on the SWTP computer system. Part 6 (continued). An in-depth > look at the Percom LFD-400 disk system. > KILOBAUD MICROCOMPUTING #35 Nov 1979 pg. 86 > > Maybe also, this if you are feeling generous: > > Product review of Percom's LFD-400 floppy disk system for the SS-50 bus. > KILOBAUD MICROCOMPUTING #26 Feb 1979 pg. 80 > > Thanks, > Bill > > > scanning now. I'll send direct when done. steve

14 years, 11 months

1
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Kilobaud Micro, October, November 1979?

by wh.sudbrink＠verizon.net

Hi, Does anybody have a copies of the October and November 1979 issues of Kilobaud Microcomputing that they would be willing to scan an article from? I can't seem to find on the net anywhere. I would like to read: Thoughts on the SWTP computer system. Part 6. A close look at three of the six disk systems that are available for the SWTP. They are: LFD-400 from Percom, BFD-68 from Smoke Signal Broadcasting and MF-68 >from SWTP. KILOBAUD MICROCOMPUTING #34 Oct 1979 pg. 30 Thoughts on the SWTP computer system. Part 6 (continued). An in-depth look at the Percom LFD-400 disk system. KILOBAUD MICROCOMPUTING #35 Nov 1979 pg. 86 Maybe also, this if you are feeling generous: Product review of Percom's LFD-400 floppy disk system for the SS-50 bus. KILOBAUD MICROCOMPUTING #26 Feb 1979 pg. 80 Thanks, Bill

14 years, 11 months

1
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Looking asr33 interfacing AND NEMA crypto machine help in Ojai, California

by billdeg＠degnanco.com

I AM FORWARDING A MESSAGE FROM A GUY WHO HAS SOME PROJECT WORK. I BELIEVE HE WILL BE WILLING TO PAY FOR SERVICE. IF INTERESTED CONTACT ME DIRECTLY AND I WILL FORWARD REPLIES TO JOHN "..I have a TELEX from the 70s (it was used when I bought it) that I last used in business in 1993. The motor runs but I can't get it to work. So, I need someone who can get it back into working order; although I won't be hooking it up to a Western Union line (if that is even possible today). I also want to be able to use it as a printer for my laptop. In addition, I have a Swiss NEMA machine (the Swiss update of the German Enigma crypto machine). It has output to a teletypewriter and I would love to see if my TELEX could be hooked up to it. I live in Ojai, CA, which is 36 miles South of Santa Barbara. Thanks, John Fickewirth .." END FORWARDED MESSAGE thanks Bill

14 years, 11 months

1
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via LisaList - Fwd: Original Lisa 1 for sale

by toby＠telegraphics.com.au

I'll just leave this here. --Toby -------- Original Message -------- Subject: Original Lisa 1 for sale Date: Tue, 6 Sep 2011 15:23:12 -0700 (PDT) From: Eric Shapiro <eric at shapiro.org> Reply-To: lisalist at googlegroups.com To: LisaList <lisalist at googlegroups.com> Just finished restoring my Lisa 1. Comes with original software... most still shrink wrapped! Boots, runs, works. Updated with refurbished power supply, logic board, hard drive (X/Profile in addition, so it will run from flash drive, if desired). Twiggy drives, of course. Just trying to gauge if this is of interest to anyone. Last one sold on eBay in January for $15,000. -- ----- You received this message because you are a member of the LisaList group. The group FAQ is at http://lowendmac.com/lists/lisa.html To post to this group, send email to lisalist at googlegroups.com To leave this group, send email to lisalist+unsubscribe at googlegroups.com For more options, visit this group at http://groups.google.com/group/lisalist

14 years, 11 months

1
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DEC PWS 500au boot failure

by CCTECH＠beyondthepale.ie

> >I went to fire up my DEC Personal Workstation 500au the other day and it >doesn't boot up any more :( > >I don't get anything out of video or the serial console and the >diagnostic lights all go out (00) rather than displaying an error or >booting message. The battery in it was dead and I replaced it but to no >avail. > >Anybody come across this before and know how to fix it? > I don't know much about the DEC Personal Workstation 500au but... Did the battery leak? I have a VAXStation 2000 which had a leaky battery which did some damage on the system board. (Fortunately, it was not severe and it is now repaired.) Check around the battery and near where the battery is connected to the system board as electrolyte can wick along the leads. Does it beep? I'm not sure about this one but some alphas will emit beep codes, if they fail before being able to access the console and some of the codes may be explained in the manual. Presumably there are some signs of life such as fans running and/or lights lighting? The next step is probably to check that the power supply is producing all the required voltages. Maybe there is a label specifying what they should be :-) Maybe not :-( Regards, Peter Coghlan.

14 years, 11 months

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hp 9000/382

by emu＠e-bbes.com

Hi all, where could I find media for Pascal and basic for them? Preferably .iso images? Any chance, to find HP-UX for them? Cheers & Thanks

14 years, 11 months

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Adding machine repair

by alexeyt＠freeshell.org

I have a pair of Olivetti Underwood 288s (10-key 7 digit input, 8 digit output adding machines), one of which I got from list member Patrick Finnegan a couple of years ago, and one which I found in a local thrift store this summer. Finding the second one inspired me to try to get them working... and I am rather out of my depth. The only electrical part (the AC induction motor that powers the mechanism) works fine in both, but both have other, mechanical issues. I've run them some under electrical power and spent a lot more time slowly turning the mechanism by hand, trying to work out what it's doing. Both have 'sticky digits', i.e. the mechanism that both rotates the type wheels into the correct position during the print part of the cycle and then is added to the accumulator in the accumulate part of the cycle doesn't move freely and thus doesn't print and doesn't accumulate the correct totals. One also has sticky pins in the input register and the other doesn't seem to carry at all and has a sticky 'leading zero suppression' mechanism. First and foremost, the oil in both machines has congealed into a sticky mess. I clearly need to replace it, but I have no idea what to replace it with. I suspect that it's something similar to what's used to lube typewriters, given that they were built by typewriter companies using typewriter-inspired mechanisms? Second, I have no idea how to take them apart correctly. I've successfully gotten the covers off, but I can't even get the ribbon holder/winding assembly off since it's linked to a mechanism that's supposed to lift it to switch from black to red ink, and I can't find a way to safely disengage them... I've also tried to remove the platen cylinder, but the ribbon holder is in the way of the retaining screws. The only other things I can obviously remove at this point are return springs that hold various levers/cams in place, but I can't see how that would help me remove anything behind them, and all of the cams seem to be maually aligned on their axles, held in the correct position by the same screws that would need to be removed to take the axles out. Ease of service does not seem to have been a design goal in these machines :-/ My inability to disassemble them is doubly problematic since parts of the mechanism are buried behind so much other stuff that I can't see what they're doing, and there are parts that I can't seem to get to move using any combination of front panel inputs... there's one bit that I've found a way to reset (subtracting) but not a way to set using normal inputs... and I don't see any way of actuating the ink-color-swithcing mechanism. Does anyone have experience with anything similar that would be able to offer advice? I'd be glad to make photos and my reverse-engineering notes available... They are fascinating machines (the whole accumulator rotates around backwards to subtract!), but I am afraid of damaging them with my clumsy attempts at repair. Since I have two, I guess I can muddle along by trial and error, but I would really love to hear from someone that's worked on a similar device before. Alexey

14 years, 11 months

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Old Memorex Terminals

by thomas.gardner＠sbcglobal.net

For the Memorex at 50 events next month we are looking for a few old Memorex or Memorex-Telex terminals from the middle 1980s; in particular, the Model 1377 and/or any Model in the 2000 series. We can pay for packaging and shipping. We would then like to offer them to the Computer History Museum for its permanent collection or we can return them after the events Tom +1 650.941.5324

14 years, 11 months

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9762 Cray pack recovery

by aek＠bitsavers.org

someone just pointed this out to me http://www.archive.org/details/2011-cdc-disk-archaeology-fenton Chris Fenton's report on recovering data from an 80mb disk pack.

14 years, 11 months

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Train shipping ( was Re: VT fixums )

by jonas＠otter.se

On Wed, 7 Sep 2011 18:55:44 +0100 (BST), ard at p850ug1.demon.co.uk (Tony Duell) wrote: >> >> > An AR88 (RCA communcations receiver) >> >> You *carried* an AR88 on a train??? They weigh, what, 45 kgs? You >> >> must >> > >> > Well, I didn't hold it for the netire journey, if that's what you >> > mean. >> > It sat on the luggage rack between Bristol and London... >> >> I hope not the overhead rack? I certainly wouldn't like to take an > > No, fortuanely not. It was one of those '125' trains, with the > luggage > racks at the ends of the carriages. it went there, on a shelf of a > suitable height. > *Phew* >> AR-88 down from an overhead luggage rack, let alone putting it up >> there, >> and certainly not having it fall out if something happened... >> Brrr... > > Knowing the cosntruction of modern trains, an AR88 would prboably go > straight through the flooe :-) > I bet. There is interesting reading at www.raib.gov.uk >> > I am insulted! I have spent my entire life avoiding exercise, and >> I >> > don't >> > intend changing that. I have never done any uncnessary exercise. >> > >> >> No offence meant! :-) > > Actually, I assuemd you'd seen at last one photo of me on the web > (thre's > one on the HPCC wrbsite in last year's confernce photos [1]), which > should indicate that I am truely a high mass hobbyist :-) > Yes, I have seen your photo, which is why I wondered about the "carrying" bit... ;-) However I might have done something as crazy as actually carry an AR88 onto a train myself, even though I have never worked out myself either previously (I have to now, my back is too painful otherwise owing to many years of working at a computer in badly conceived workplaces. A herniated disc and a doctor finally convinced me exercise was the only way to not be in constant severe pain). 45 kg is really heavy... /Jonas

14 years, 11 months

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B-29 targeting computer

by brianlanning＠gmail.com

:-) http://www.ebay.com/itm/B-29-Bomber-Superfortress-Rare-Vintage-Analog-Compu…

14 years, 11 months

4
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Documentation for Clearpoint SNXRAM/12 VME board?

by earl＠baugh.org

Howdy, Anybody happen to have (or know where) I can find documentation on a Clearpoint SNXRAM VME board? I've tried Googling for it, but no luck. I've got one and would like to add it to my Sun 3/110. (which I finally got booting after a lot of work finding all of the bad ram on the motherboard) Wondered if anybody happened to have info, esp. for the configuration jumpers (I can get it to "add" 6MB, but suspect it might be overlapped with the motherboard ram... that, or it has a bad chip or two... [which are sadly soldered on...] ) Want to make sure I've got it set up right before I EVEN BEGIN to think about attempting to debug the chips on it... :-) Earl

14 years, 11 months

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VAX 11/730 - free to good home - via comp.sys.dec

by toby＠telegraphics.com.au

Incredible opportunity here for someone. Wish I could take it. --T > Hello All, > > I have an 11/730 with the following bits: > > Out by themselves: > * H7140 (power supply?) > * RL02 > * a faceplate with two tape/cart drives > > In the cabinet: > * RL02 > * CPU (it also says "DMF32 distribution panel" on the back) > * R80 > > I also have a VT220 terminal. > > I don't know anything about VAXes but it was running when last powered > down about 15 years ago. I was given it by a friend I helped with > some IT consulting. > > I have pictures I can make available. The system is in Greenville SC > and will be given away to the first person who can come pick it all > up. > > It has to go ASAP so don't waste time thinking I will still have it in > a month. It will be scrapped. :-( > > Thanks! > > -- Peter. https://groups.google.com/d/topic/comp.sys.dec/YhM5idkpF9U/discussion

14 years, 11 months

1
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What's 6 Feet Tall and Weighs 1,500 Pounds? A Minicomputer

by jblaser＠sisna.com

From today's (August 24) Wall Street Journal front page: http://online.wsj.com/article/SB10001424053111903596904576516552161014410.h… Written as a bit of a puff piece, but interesting nonetheless, given the national reach of the WSJ. It might (though I doubt it) spur a few Wall Street types to take a keener interest in retro gear, making things dearer and harder for us homie hobbyists to acquire. :) Kudo's to Ian (King) and Rich (Alderson), et al. -- Jared

14 years, 11 months

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Train shipping ( was Re: VT fixums )

by jonas＠otter.se

On Mon, 5 Sep 2011 21:21:32 +0100 (BST), ard at p850ug1.demon.co.uk (Tony Duell) wrote: >> > An AR88 (RCA communcations receiver) >> You *carried* an AR88 on a train??? They weigh, what, 45 kgs? You >> must > > Well, I didn't hold it for the netire journey, if that's what you > mean. > It sat on the luggage rack between Bristol and London... I hope not the overhead rack? I certainly wouldn't like to take an AR-88 down from an overhead luggage rack, let alone putting it up there, and certainly not having it fall out if something happened... Brrr... But even carrying it *to* the train wouldn't be particularly fun, with a cart or trolley I might consider it. > >> work out a lot... > > I am insulted! I have spent my entire life avoiding exercise, and I > don't > intend changing that. I have never done any uncnessary exercise. > No offence meant! :-) > The only 'working out' I do is how to fix classic computers (etc), > how to > design bits of electronics, and so on. > > >> I used to have a BC-312M. I really regret having got rid of it. That >> was >> a nice piece of equipment.Not quite as heavy as the AR88 but quite >> heavy >> enough to break your foot if you dropped it on one of them. The foot >> would be severely damaged but not the BC-312M... > > And that's the way it should be. You foot will mend itself, the > receiver > will not > Hmm, I'm not sure there would be a lot left of my foot to mend if a BC-312 fell on it from any height... /Jonas

14 years, 11 months

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Free: Big CRTs in Chicago

by silent700＠gmail.com

I am moving (locally) in a few weeks. I've just started packing and, with much less success, trying to figure out what doesn't need to move with me. First off the pile are two large, old CRTs: Sun GDM1962B (http://www.monitorworld.com/Monitors/sun/gdm1962b.html) SGI CM2086A3SG The Sun has a 13W3 connector and is probably contemporary to the first Sparcstation line. The SGI has 3 BNCs and the *old* logo, which probably means it went with the Personal Iris era of SGI. That almost makes it collectable to me but...no. No CRTs for me. At least not for machines that can me made to work with an LCD. They're free for pickup if you happen to be in the area (60074.) No way I will ship these. -- jht

14 years, 11 months

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Wall Street Journal has an article about Paul Allen's Computer Museum

by christian_liendo＠yahoo.com

Just interesting that that WSJ picked this up http://online.wsj.com/article/SB10001424053111903596904576516552161014410.h…

14 years, 11 months

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eBay... Yikes! (PDP-1 Handbook)

by healyzh＠aracnet.com

14 years, 11 months

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More house cleaning...

by useddec＠gmail.com

Still trying to unpack and thin the herd. Any interest? Shipping from zip 61853, Illinois Thanks, Paul 1 BA350-KA in pedestal with doors 1 BA350-KB 5 BA350-LA 1 BA350-MA WITH HSZ50,HSX CACHE, ETC 1 BA350-SA 1 BA350-SB 1 BA356-JC 1 BA356-KC 2 BA356-RA 1 DS-BA356-RC blue 2 BA356-SC 3 HS35X-BA 7 BA35X-HA 4 BA35X-HB 15 BA35X-HF 5 BA35X-HG 2 BA35X-HH 6+ BA35X-MD fans 1 BA35X-MG 1 70-32155-01 1 70-31490-01 3 DS BA35X-DA 5 DS-RZ1CB-VW blue 2 DWZZA-VW 11 DWZZB-VW 4 RZ24-E 12 RZ25-E 3 RZ26-E 5 RZ28-VA 19 RZ29-VW 3 SHD3-ZZ 4 SHG23-NF netframe 1 SHX37-NF 1 SHZH1-BH

14 years, 11 months

2
2
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TRS-80 Model II Digging

by nathan＠nathanpralle.com

Finally pulled out the TRS-80 Model II tonight with the intention of actually working on it for once (shocker!) and trying to get it operational. It powers up, drive spins, screen comes on, lights glow, etc. Insert any one of about 20 8" floppies that I have that are specifically for the Model Ii and..... Nothing. Well. BOOT ERROR RS, which is translated as, "Disk not in RadioShack format." I'd believe it for one or two, but all of them? It seems unlikely, although I could blame bit-rot perhaps. I'm hoping it has something to do with the hardware instead. Popping it open, the unit powers on and the drive head is dropped to the spinning disk, then lifted, then dropped, then lifted, and the error occurs. I cannot see if the head is close enough to the disk or not (and I have *no* idea of the tolerances anyway) and am not sure how I'd adjust it -- or drive speed, etc. if that's an issue. So, anyone got ideas? There *is* a remote possibility that all the disks I got were wiped either by the previous owner or in some sort of magnetic disaster, but they're well-labeled and came from a working haul, so I have to imagine that they're still good. Or at least, I'm hoping they are. (The bits are damned near visible on these things, after all.) Your ideas and good guesses welcome and very much appreciated. Nathan -- *Nathan E. Pralle* Computer Geek www.nathanpralle.com www.philosyphia.com www.twitter.com/NPralle

14 years, 11 months

5
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RQDX3 DEVOFFLINE Problems

by robert.jarratt＠ntlworld.com

I have a MicroVAX II in a BA123 enclosure and I am experiencing some problems getting it to see the RD53. Whenever I try to boot I just get the error DEVOFFLINE and the Ready light on the front panel goes out when this happens (you can't get it to switch on again if you press the button a few times). The RD53 is known to work as it will boot in a MicroVAX 2000. The RQDX3 also works as I have tested it in a working MicroVAX II (BA23). I have tested the cable from the RQDX3 to the M9058 distribution board. I have also tested the cable from the M9058 to the front panel. I have tested the front panel button and it seems to be right (it shorts two terminals when depressed, leaving the Open Circuit when it is out). I have swapped the cables from the distribution board to the drive with another set. I am starting to suspect that the M9058 is at fault, I don't have a spare to eliminate this component, but I was wondering if anyone else has seen this problem and has any suggestions. Thanks Rob

14 years, 11 months

8
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DEC GIGI (again)

by jws＠jwsss.com

I dug my GIGI out of the pile this weekend, during a visit to my stuff in Kansas City. I notice it is running out 4 bnc's and recall that the Dec monitor I had at one time had that sort of feed. Is it as easy as 4 of 5 wires (sync on green maybe) to get it going? I also have an aging cranky 24" Viewsonic which has BNC inputs, but when it goes poof, I'd love to have this as someething I can still run with an LED display. I know there is a GIGI discussion in the archive somewhere and will look for it to see if it had a monitor discussion associated with it. thanks Jim

14 years, 11 months

5
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Early 3D rendition

by pontus＠update.uu.se

Hi I was sent this link with a film of an early 3D computer rendered animation by Ed Catmull and Fred Parke: http://nerdplusart.com/first-3d-rendered-film-from-1972-and-my-visit-to-pix… I'd love to know more technical details and also if it really is the first 3D film. Henri Gouraud published his techniques in 1971, this must be a very early application at least. Kind Regards, Pontus.

14 years, 11 months

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TI CD 1400 Drive [for sale / offers]

by michael.99.thompson＠gmail.com

> On Tue, Aug 30, 2011 at 7:11 PM, Robert Borsuk <rborsuk at gmail.com> wrote: >> I need to get rid of this drive. ?I don't have the TI990 computer for it anymore. >> If I don't get any offers in the next couple of days I'm going to scrap it out (that said - this is not free). >> It's a TI CD 1400 branded drive. ?Magnetic Peripherals 944B drive. >> The unit weighs 175 pounds so it puts out of the standard shipping range. >> Please send any offers off list. ?Drive is located in Port Huron, Michigan. >> >> Rob Too bad you don't live further northeast. That drive would go nicely on either the 990/10 or the 990/12 at the RICM. -- Michael Thompson

14 years, 11 months

2
1
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P112 boot rom 5.1

by dgriffi＠cs.csubak.edu

Are there any P112 users who have updated their P112 boot roms to version 5.1? I just got a batch of 5.1 roms from Terry Gulczynski and I find that they won't boot CP/M 2.2 as downloaded from p112.sourceforge.net. I have only a very crude understanding of what's going on under the hood, so I'd appreciate some help in figuring out what's wrong. -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

14 years, 11 months

1
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DEC PWS 500au boot failure

by bdwheele＠indiana.edu

Hey all! I went to fire up my DEC Personal Workstation 500au the other day and it doesn't boot up any more :( I don't get anything out of video or the serial console and the diagnostic lights all go out (00) rather than displaying an error or booting message. The battery in it was dead and I replaced it but to no avail. Anybody come across this before and know how to fix it? Thanks! Brian

14 years, 11 months

2
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Looking for SunOS 4.1.* (sun3) cd image

by derschjo＠mail.msu.edu

I'm in the process of getting a mongrel Sun 3/400 machine running as a host for my Symbolics UX400. The UX400 support software requires SunOS 4.1 which I used to have on CD, but I now appear to have misplaced. (I have a copy of 4.1.4, but it only supports Sun4 machines ) Anyone have a copy they could make an image of? (and yes, I've confirmed that this machine will boot from CD.) Thanks! Josh

14 years, 11 months

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Original Prices of DEC Equipment

by robert.jarratt＠ntlworld.com

I would like to find out the original prices of some of the DEC equipment I have when it first came out, preferably the UK prices. I only have a couple of catalogues but they don't cover all the things I am interested in. If anyone has catalogues and could scan the pages with prices and options etc that would be great. The equipment I am interested in are: MicroVAX II MicroVAX 2000 MicroVAX 3100 (Models 30, 40, 80, 95) VAXstation 4000 VLC VAXstation 4000 Model 60 MicroVAX 3400 PDP11/24 VT220 VT420 LA50 Alpha 433au DEC 2000 Model 300 AXP DEC Professional 350 Thanks Rob

14 years, 11 months

8
14
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HP Moseley Plotter

by wdonzelli＠gmail.com

I have a small Hewlett Packard / Moseley plotter here, probably from the mid/late 1960s? available. I was going to scrap it, but maybe an HP fan might want this, as it comes from a not well known division of the company. It looks like it can do 11 by 17, and seems to have digital and analog inputs. Untested, a bit dusty and grungy. I figure there is about 15 bucks of scrap in it, so if anyone wants it for 10 bucks, please speak up now. Of course, feel free to offer more. Off list, please. Maybe 30 pounds, from 10512. -- Will

14 years, 11 months

1
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Train shipping ( was Re: VT fixums )

by jonas＠otter.se

On Tue, 30 Aug 2011 20:36:58 +0100 (BST), ard at p850ug1.demon.co.uk (Tony Duell) wrote: > I havre no idea waht the official restrictuions are, but I've carried the > following on British trains (on serparate occasions) : > > An IBM PC/AT (got the comment from a fellow traveller 'That's some > laptop' ;-)) > > A DEC RS02 + 2 large bags of UNibus boards and printsets > > A complete GT40 > > An AR88 (RCA communcations receiver) You *carried* an AR88 on a train??? They weigh, what, 45 kgs? You must work out a lot... I used to have a BC-312M. I really regret having got rid of it. That was a nice piece of equipment.Not quite as heavy as the AR88 but quite heavy enough to break your foot if you dropped it on one of them. The foot would be severely damaged but not the BC-312M... /Jonas

14 years, 11 months

2
1
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Need switch settings for...

by wh.sudbrink＠verizon.net

the Gimix 16K memory board for the SS-50 bus. Unlike the 32K card, there doesn't seem to be a lot of rhyme or reason to this one. Thanks, Bill Sudbrink

14 years, 11 months

1
0
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RT-11 v2C Fortran

by iamvirtual＠gmail.com

Does anyone have an image of the Fortran DECtape which is compatible with RT-11 v2C? I have a copy which is labeled as being suitable for RT-11 v2C, but it does not have the 'fortra.sav' file. There is a 'forgen.com' file. Since RT-11 v2C doesn't support command files, I don't think the tape is for RT-11 v2C. Thanks! --barrym

14 years, 11 months

1
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Can anyone ID this machine?

by alexeyt＠freeshell.org

A coworker of mine showed me this link. Whatever it is looks pretty sweet, but I don't think I've ever seen a similar machine. Anyone know what it is? Is it even a computer, or some sort of teletype switching office? http://i.imgur.com/tDA3X.jpg Alexey

14 years, 11 months

5
5
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WANTED: More regional collectors

by tosteve＠yahoo.com

Hi, I run the website http://oldcomputers.net I get a lot of old computer systems offered to me for cheap or free, but most I don't want - too big, or too far away to pay shipping. A while back I asked for other collectors who would be receptive to these orphaned systems, and over 60 people have signed-up so far! But entire parts of the US are still open - the East coast is covered pretty well, but west of the Mississippi River these is almost no one until the coast. I've got Nathan in Iowa, Richard in SLC, but that's about it. Send me your name, email, and what you collect, and I'll try to get you some good stuff (some people got some REALLY good stuff). Thanks- Steven Stengel http://oldcomputers.net

14 years, 11 months

16
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Macintosh Programmers' Workshop - Fwd: MPW turns 25!

by toby＠telegraphics.com.au

Some ccmp listers will have fond memories of MPW. I know I do. Still runnable on my PPC G4! (OS X 10.4) & I still occasionally need to build with it. --Toby -------- Original Message -------- Subject: MPW turns 25! Date: Sun, 04 Sep 2011 21:55:05 -0600 From: Dan Allen <danallen46 at airwired.net> To: development MPW <mpw-dev at lists.apple.com> Today, September 4th, in 1986, we completed MPW 1.0, 25 years ago! I just thought we should note the occasion. Dan Allen _______________________________________________ Do not post admin requests to the list. They will be ignored. MPW-Dev mailing list (MPW-Dev at lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/mpw-dev/toby%40telegraphics.com.au This email sent to toby at telegraphics.com.au

14 years, 11 months

1
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VT fixums

by wdonzelli＠gmail.com

Just a reminder - this Saturday, just a few days away, RCS will be doing triage on our big pile of VT100s and VT100oids. We need the space! Incoming Cray! Failed VTs will be available for pickup at our open house in Providence, RI (see rcsri.org for directions). I may be able to move a few to the MIT Flea on Sunday. And of course, cash donations are very much appreciated, but not required. But appreciated. Really appreciated... -- Will

14 years, 11 months

39
166
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TRS-80 Model II Digging

by nathan＠nathanpralle.com

Finally pulled out the TRS-80 Model II tonight with the intention of actually working on it for once (shocker!) and trying to get it operational. It powers up, drive spins, screen comes on, lights glow, etc. Insert any one of about 20 8" floppies that I have that are specifically for the Model Ii and..... Nothing. Well. BOOT ERROR RS, which is translated as, "Disk not in RadioShack format." I'd believe it for one or two, but all of them? It seems unlikely, although I could blame bit-rot perhaps. I'm hoping it has something to do with the hardware instead. Popping it open, the unit powers on and the drive head is dropped to the spinning disk, then lifted, then dropped, then lifted, and the error occurs. I cannot see if the head is close enough to the disk or not (and I have *no* idea of the tolerances anyway) and am not sure how I'd adjust it -- or drive speed, etc. if that's an issue. So, anyone got ideas? There *is* a remote possibility that all the disks I got were wiped either by the previous owner or in some sort of magnetic disaster, but they're well-labeled and came from a working haul, so I have to imagine that they're still good. Or at least, I'm hoping they are. (The bits are damned near visible on these things, after all.) Your ideas and good guesses welcome and very much appreciated. Nathan -- *Nathan E. Pralle* Computer Geek www.nathanpralle.com www.philosyphia.com www.twitter.com/NPralle

14 years, 11 months

3
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TI CD 1400 Drive [for sale / offers]

by rborsuk＠gmail.com

I need to get rid of this drive. I don't have the TI990 computer for it anymore. If I don't get any offers in the next couple of days I'm going to scrap it out (that said - this is not free). It's a TI CD 1400 branded drive. Magnetic Peripherals 944B drive. The unit weighs 175 pounds so it puts out of the standard shipping range. Please send any offers off list. Drive is located in Port Huron, Michigan. Rob pics at http://tinyurl.com/3hdv62b

14 years, 11 months

2
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cctalk Digest, Vol 97, Issue 5

by ceby2＠csc.com

Rich, >> You could force an 8 bit boundary on the resulting data, but things >> like sector headers are sometimes deliberately encoded in >> fluctuation sequences that don't conform to rest the data encoding. >That's hardly deterministic, and would certainly not work on, for >example, a disk written by a PDP-10 (36 bit words represented as pairs >of 18 bits + parity), to take a popular example. There *are* no >deterministic outcomes, especially in archival work. There is only >interpretation. Precisely, yes. But even with byte encoding of bitstreams you have an endian problem. At some point the capture system imposes its personality on the process and you simply have document what you've done so the upstream ('viewer'/'accessor') toolset can take it into account in post processing. The adding of metadata context is what contributes to the deterministic outcome, rather than attempting to force raw capture into a rigid format. >http://www.boogles.com/local/papers/tcfs-thesis/thesis.html >This is Brian Zuzga's 1995 undergraduate thesis at MIT on a project to >archive the backups done at the MIT AI Lab using what they named "the >Time Capsule File System". Nihil novi sub sole (Ecc. 1:9-10). Thanks for the reference. I must have come across it before at some point as it seems very familiar. But it wasn't a work I was referencing yet in preparation. I'm studying it closely, along with things like the UPF. What strikes me is how there are several originating documents around effort followed by long silences and lack of back references. It may be down to the relatively cursory nature of my work so far, but it seems adoption of these formats and processes has been either quiet or limited. Is that a misapprehension on my part? Any other efforts you think I should investigate? -- Colin

14 years, 11 months

1
0
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Old printer tricks, HP LaserJet 6P

by vintagecoder＠aol.com

Thanks! ------Original Message------ From: Charles E. Fox Sender: cctalk-bounces at classiccmp.org To: General Discussion: On-Topic and Off-Topic Posts ReplyTo: General Discussion: On-Topic and Off-Topic Posts Subject: Re: Old printer tricks, HP LaserJet 6P Sent: 4 Sep 2011 10:43 At 05:16 AM 04/09/2011, you wrote: >I received an old HP LaserJet 6P. According to the doc it has an IEEE-1284 >interface (B and C ports). The PCs I have don't have parallel ports. Will a >USB to parallel converter cable "just work" or how should I hook this up to >a Windows XP box? Also, any comments on this unit? I remember seeing >some threads with people praising/damnning various HP models. Thanks. My HP Laserjet 4050 works fine with a USB to Parallel cable. Charlie Fox Charles E. Fox 793 Argyle Rd. Windsor Ont. 519-254-4991 N8Y3j8 www.chasfoxvideo.com

14 years, 11 months

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Old printer tricks, HP LaserJet 6P

by vintagecoder＠aol.com

I received an old HP LaserJet 6P. According to the doc it has an IEEE-1284 interface (B and C ports). The PCs I have don't have parallel ports. Will a USB to parallel converter cable "just work" or how should I hook this up to a Windows XP box? Also, any comments on this unit? I remember seeing some threads with people praising/damnning various HP models. Thanks.

14 years, 11 months

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scarcity of digital preservation efforts - was Re: eBay... Yikes! (Adrian Stoness)

by ceby2＠csc.com

Toby, >One thing to consider is how the format deals with damage.... Good thought. I wonder if that integrity functional role could be delegated to the container format rather than the payload element. The payload doesn't get internally marked up with checksum blocks, but we rely on LZW/LZW2/other as the guarantor of file integrity. The rest of the scavenging is done by the metadata/descriptor element (like card 1 = byte [xxx]-byte[yyy]). Any damage or ambiguity is noted in this external metadata rather than the actual capture blob. The container ensures that the integrity of the contents are the same as when they were created. The descriptor describes what was known at creation time. Workable? Regards, Colin Eby

14 years, 11 months

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mess.org

by dm561＠torfree.net

> Date: Thu, 1 Sep 2011 13:00:24 -0400 > From: Dave McGuire <mcguire at neurotica.com> > > On Sep 1, 2011, at 12:52 PM, Glen Slick <glen.slick at gmail.com> wrote: >> I haven't noticed many "rabid Microsoft fanboys" on this list, > > Oh, there are definitely one or two. I'll be nice today, though. ;) > Hello? <wiping froth from chin...>

14 years, 11 months

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scarcity of digital preservation efforts - was Re: eBay... Yikes! (Adrian Stoness)

by ceby2＠csc.com

All - Thought I'd de-cloak from lurk mode long enough to canvas opinion or archival formats (again). I'm considering this from a digital media (not paper to digital) at the moment. Considerations for paper and software are similar though. There are many dozen image formats for diskettes and disk drives, just as there are for photographic and paper images. My thought was to avoid the problem by using a non-format. Stay with me on this... basically persist the data in as raw a format as possible, with an externalised, self defining descriptor, all wrapped up in an open archive format to form a single file. The concept being that the long term storage format is just a not the viewer format. You maintain a converter from the storage format to a current viewer format, but you don't actually store the data in the current viewer format. By current viewer, I mean PhotoShop, Acrobat, etc. Here's the basic file layout: xxxxx.zip : raw.bin (a simple sequential byte copy) descriptor.xml ( instructions on how to carve it into sectors, raster lines etc.) *Don't get hung up on *.zip... I know LZW is encumbered... this is just an example. The actual scan output is the raw.bin. It no formatting data at all. The descriptor tells you everything you recorded about the file at scan time which helps you to interpret the data stream later. That could be ratster format, page markers, etc. This should work for a broad range of data for an already digital data format. The problem I have with this approach is where a scan doesn't result in actual digital information. Yeah, ok it's all bytes on disk, but what I mean is sampled data versus byte for byte representation. Paper tape and punch cards are examples of data which is unambiguous in a digital sense, because it contains a fixed encoding stream, with a self evident data word boundary. A card is one character a line, tape one character per linear unit. All you have to do is store the whole thing as a byte encoded stream, and put the metadata in the descriptor (card 1, card 2, etc...). Where this falls down is say for instance, an MFM diskette scanned with a sampling board like a CatWesel. In this case the data returned is basically analogous to sampled analog signals. It's clock ticks between fluctuations. The fluctuations are binary. But their interpretation is based on sampling rate and media rotation. You can sample at higher and higher rates and get more sampling data, if you are working blind. This is less of a problem if you know something about the subject. But otherwise discretion has to be applied to interpret what you've captured. That worries me. I like deterministic outcomes, especially in archival work. You could force an 8 bit boundary on the resulting data, but things like sector headers are sometimes deliberately encoded in fluctuation sequences that don't conform to rest the data encoding. That throws your interpretation of the data off, unless you already know what the sector header formats look like. The only way I can think of to follow the inside-out / no proprietary archival format approach you basically don't transpose to bytes at all, but leave it as sampled fluctuations... not even bits. As with other viewer approaches, you apply the transposition only when you attempt to view the data, not when you store it for archival purposes. Thoughts? Third example... a booked scanned becomes a byte stream of bit map data stored in the raw.bin. The descriptor then encodes the page transitions and raster format, plus discretionary metadata. I like that much better than PDF, TIFF and JFIF. I realise these formats are unlikely to die out, but I like the idea of a common archival format which is self documenting better. I'd be interested in hearing people's (non-flame) comments. Regards, Colin Eby

14 years, 11 months

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RQDX3 DEVOFFLINE Problems

by jack.rubin＠ameritech.net

> What I need now is to borrow or buy an M9058 to test with, and ideally a > qbus extender so I can use an oscilloscope to work out which component is > failing. > > Regards > > Rob All the M9058 is getting from the box is power - you can easily remove it from the chassis, supply power directly from an external supply (solder temporary feed leads above the board fingers if you don't have the right connector). Makes testing a lot easier. Jack

14 years, 11 months

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Tony Sale passed

by aek＠bitsavers.org

http://www.bbc.co.uk/news/technology-14720180

14 years, 11 months

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mess.org

by emu＠e-bbes.com

Talking about preservation of old stuff ... Anybody know what happened to them? Not reachable for a while already. Cheers

14 years, 12 months

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Intel MDS available in SC

by rich.cini＠verizon.net

All -- I got an email from someone in Landrum, SC (close to Greenville and Greer) regarding an Intel MDS system with disks, manuals and the 8080 pod. I don?t have the room for it and the person doesn?t really want to ship it, so I thought I?d mention it here. If anyone?s interested, contact me off-list for the person?s contact info. Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://www.classiccmp.org/cini

14 years, 12 months

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mess.org

by feldman.r＠comcast.net

>Message: 6 >Date: Tue, 30 Aug 2011 13:52:48 -0500 >From: Jules Richardson <jules.richardson99 at gmail.com> >To: General Discussion: On-Topic and Off-Topic Posts >????????<cctalk at classiccmp.org> >Subject: Re: mess.org >Message-ID: <4E5D3180.4010903 at gmail.com> >Content-Type: text/plain; charset=ISO-8859-15; format=flowed > >Sridhar Ayengar wrote: >> Adrian Stoness wrote: >>> and that means what? >> >> You see how my text is below yours? ?That's the way it should be. ?You >> are putting your text above the text to which you are replying. > >Agreed... although ordering is a funny thing - someone should really tell >US road maintainers so that they cease writing things like "ahead stop" on >their roads ;-) You're not the only one who thinks that way: http://xkcd.com/781/

14 years, 12 months

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VT100 available at Weirdstuff...

by lbickley＠bickleywest.com

I checked out the VT100 at Weirdstuff. Here's the scoop: 1. I powered it up and the screen is clean and in focus. Setup "A" and "B" work. 2. I did not have a BOB with me so I didn't test the comm port. 3. It is a very nice looking VT100, with only a few minor signs of wear. The keyboard is clean and appears to work O.K. (tested via Setup). 4. The price is $150 (as opposed to the $50 previously posted to CCLIST). It still seems reasonable for such a clean VT100. If you are local and coming to WS, it is located slightly to the right of the front door... Cheers, Lyle -- Lyle Bickley, AF6WS Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero"

14 years, 12 months

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TI CD 1400 Drive [for sale / offers]

by RBORSUK＠COLOURFULL.COM

I need to get rid of this drive. I don't have the TI990 computer for it anymore. If I don't get any offers in the next couple of days I'm going to scrap it out (that said - this is not free). It's a TI CD 1400 branded drive. Magnetic Peripherals 944B drive. The unit weighs 175 pounds so it puts out of the standard shipping range. Please send any offers off list. Drive is located in Port Huron, Michigan. Rob pics at http://tinyurl.com/3hdv62b Robert Borsuk rborsuk at colourfull.com Colourfull Creations http://www.colourfull.com

14 years, 12 months

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S-100 buffered prototyping board PCBs

by lynchaj＠yahoo.com

Hi, I have several S-100 buffered prototyping board PCBs available. They are $20 each plus $3 shipping in the US and $6 elsewhere. Technical information available here http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=S-100%20buffer… Please contact me if interested. Thanks! Andrew Lynch

14 years, 12 months

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PDP-1 Chair

by pontus＠Update.UU.SE

Hi All I've been searching for info on the PDP-1 chair: http://www.computerhistory.org/collections/accession/102662827 What I would like to know is what make and design it really is. Did DEC actually manufacture it themselves? Or did they buy it from someone else? By the looks of it, it also came with the PDP-11 and PDP-7 http://en.wikipedia.org/wiki/File:Pdp7-oslo-2005.jpeg http://lh3.ggpht.com/_axaTeNSveZc/Sks440fIieI/AAAAAAAAAEg/UsaE3a1Zv-U/pdp11… /Pontus

14 years, 12 months

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Web based digital preservation efforts

by jfoust＠threedee.com

At 03:00 PM 8/29/2011, William Donzelli wrote: >>>How will the archivists handle these? >> >> Virtual machine images. > >What about the virtual worlds? You can have a virtual machine running >the original software, and maybe even connected to an emulated server >- but it won't be much fun playing in an endless void. "World" meaning the 3D landscape? Or the players and their stuff? It's all in databases on servers. It's probably all in virtual appliances today. Appliance images are probably all they are backing-up today. No doubt some other earlier examples exist where they quaintly put one and only OS on one physical server, but if you have the hard drive image, it could be virtualized. - John

14 years, 12 months

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Getting a Sun Ultra 5 To Work

by robert.jarratt＠ntlworld.com

Some time ago I was given a Sun Ultra 5. My intention is not to keep it, but I would like to see if I can get it to work first before finding a new owner for it. It did not come with a keyboard, so I have been trying to get something out of the serial port, I believe that when there is no keyboard attached it uses the serial port. >From my records it looks like at some point when I first got it I did manage to get to see something using 38400 baud, but now I don't get anything at all. This could be just that I have not got the right cable between the machine and my terminal emulator. Should I expect to be able to boot the machine from the serial port, log in etc? Thanks Rob

14 years, 12 months

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cctech Digest, Vol 96, Issue 32

by jonas＠otter.se

On Sun, 28 Aug 2011 19:26:00 -0700 (PDT), Fred Cisin <cisin at xenosoft.com> wrote: > > You, sir, underestimate the prevalence and power of stupidity! > The administration of the college, for example, is losing critical > data on > a daily basis. Nothing short of defenestration will stop them from > losing > it. Last month, the amount of comp time that I have accumulated (a > year!) > had to be recreated from post-it notes on a cubicle wall. > Einstein is claimed to have said "Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe." He must have worked at your college. And I'm convinced he was right. /Jonas

14 years, 12 months

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Blue handle flipchips

by quapla＠xs4all.nl

Hi, Does anybody know where DEC flipchips with a blue handle were used for? I have one numbered 'B161'. Thanks, Ed -- Dit is een HTML vrije email / This is an HTML free email.

14 years, 12 months

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Web based digital preservation efforts

by jfoust＠threedee.com

At 11:24 AM 8/29/2011, William Donzelli wrote: >How will the archivists handle these? Virtual machine images. At 12:29 PM 8/29/2011, Dave McGuire wrote: > The greatest productivity-killing, employment-killing, and parental-basement-stuffing products ever developed? I say let them be lost to the sands of time! Gosh, I wish I was smart enough to make a software product that was popular, productivity-killing, life-sucking, and capable of destroying relationships and personalities without breaking stride. Sounds mightly profitable to me. I think lots of people will study these worlds, for a long time to come, for social science and for profit. As for the file-format debate, as someone who spent a decade-plus mucking about in the 3D and 2D file-format conversion / filter market, and who wrote a few chapters and edited a bit of the O'Reilly book on graphic file formats, I'm confident that a decade or two from now, they'll still be puzzling over some files that just don't seem to "read" right unless under some emulation of the programs of the era that made them. File format specs are often written *after* the program that made them. Stuff is left out. Features and side-effects are forgotten. Heck, even today, I've been vexed by the container formats used for video. The file extension doesn't tell you much. A month or two I was trying to help a law client who had some patrol car footage on CD. I spent a few hours googling and using deep-inspection tools to try to determine the codecs necessary to play-back on various Windows systems - and ultimately I couldn't get it to play in some environments. - John

14 years, 12 months

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Bell & Howell Apple II Keyboard

by mikelee＠tdh.com

Curious if anyone would have spare keys/keyboard or parts of a Bell & Howell "Black" Apple II they are willing to sell. Mine is missing a couple, and would be nice to get it completed.

14 years, 12 months

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AT&T 6300/Olivetti M24 question

by cclist＠sydex.com

Does anyone have an Olivetti M24 or AT&T PC 6300 with the P8 version display card close at hand? The one I have has the display card very thorougly disabled (no I/O or memory space accessible) by the setting of a couple of jumpers and a jumper plug at position 5H on the display card. This is a 20-pin DIP socket and looks suspiciously similar to the 14 pin jumper plugr used to disable the P4 display card. Can anyone tell me what's supposed to be at this position? Since it's a 20 pin DIP, it could be a something simple such as an LS244, or (groan) it could be a PAL. On the P4, it's an LS00, but that's clearly not the case here. I have schematics for the P2 board, but not the P8. If all else fails, I'll take the board out and try to figure things out the hard way, but I'd rather get the information the easy way. --Chuck

14 years, 12 months

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Sparetime Gizmos SBC-6120 on Ebay

by christian_liendo＠yahoo.com

I cannot find the original price on the unit so I cannot compare. I went to the wayback machine looking for the pricing and all the pages list "sold out" The seller should be happy I found this and posted. Someone should be interested. I myself am saving for a Mimeo from Willegal

14 years, 12 months

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Web based digital preservation efforts

by wdonzelli＠gmail.com

> I also don't agree that modern software systems are in a better state to > be preserved. In the 'old days' you could get a shrink-wrapped package that > was the entire deal, docs, and media. Today, it's a blob that comes off the > web and gets patched very frequently, as well as potentially being tied to > the mother-ship to be functional. There are dozens (hundreds?) of products > now that are devices that were tethered to dead back-end services > (Danger Sidekick). How do you even start to preserve this? What is being done to preserve the online gaming scene? For example, one of these days WoW is going to go away. The cultural aspect of a game like this is pretty huge. There are other online games that are probably already gone. How will the archivists handle these? -- Will

14 years, 12 months

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Dec RSX Login

by g-wright＠att.net

I Have a 11-24 here running RSX. The guy I got it from does not recall the login Name or account. Just remembers there was no password. Is there standard accounts set up when the system is loaded ?? or a way to hack into it. Boots saying " RSX-11M V4.0 BL32" Thanks, Jerry

14 years, 12 months

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Rice R1

by rdawson16＠hotmail.com

An early vacuum tube computer, Houston Texas: http://www.cs.rice.edu/History/R1/ I have been close to a piece of this; about the form factor of the 2001 monolith, 9 feet tall, 5 feet wide, foot thick. Plexiglas and all the construction, tubes very neatly wired. It floated around town for a bit, it served as a coffee table at Autocad for a number of years and we all spilled a few beers on it during after hours CAD conversations... It was picked up by a friend and a conversation piece in his garage. This we guessed was just one register, there were perhaps 20 or so of these likewise panels in the original. When in Houston, drop by, it is now in a proper place, Rice Library in the Woodson Research Center.

14 years, 12 months

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what's that watermelon doing there?

by jeffj＠panix.com

>> What do watermelons have to do with Buckaroo Banzai? > During a chase scene, the camera pans past a watermelon in a large > hydraulic press. Jeff Goldblum's character asks "why is there a > watermelon there?" The response is simply, "I'll tell you later", > and that's the end of it. Jeff (and the audience) never find out. Somewhere I heard the answer: the Banzai Institute was working on watermelons with a rind tough enough to withstand air drops. But the need for them went away before they were perfected. Or perhaps they were too much rind, not enough fruit inside.

15 years

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What Your Old Graphing Calculator Says About Technology

by stephane.tsacas＠gmail.com

An interesting article : http://www.theatlantic.com/technology/archive/2011/08/what-your-old-graphin… -- Stephane http://kiva.org/invitedto/kathleen/by/stephanefr

15 years

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Steve Jobs

by evan＠snarc.net

Now is a good time for a Steve Jobs thread. What do you guys think --- how will his resignation impact Apple? PS - TMZ.com posted photos of him allegedly taken in the past few days. I urge everyone to NOT link to the pictures as they show a morbidly ill person. Anybody who really wants to see can go look manually.

15 years

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WANTED: More regional collectors

by innfoclassics＠gmail.com

>> Send me your name, email, and what you collect, and I'll try to get you >> some good stuff (some people got some REALLY good stuff). I have replied by private email to Steven but felt I should mention to the list I have experience in shipping and moving computers up to and including IBM mainframes. I am a retired secondary market computer dealer from Portland Oregon in the 1990s. I am available to help move and ship computers and peripherals to anywhere in the world (they can legally be shipped). I specialize in packing for survival including terminals. I collect Intel Multibus 1, Tektronix, Xerox, CPM & MPM, Apple, some DEC, HP calculators/computers and more. Would love to set up a museum or some way to display my collection. Have helped fill many a collection around the world. Paxton -- Paxton Hoag Astoria, OR USA

15 years

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Printing replacement Alps plotter motor pinion gears

by ethan.dicks＠gmail.com

On Fri, Aug 26, 2011 at 1:45 PM, Tony Duell <ard at p850ug1.demon.co.uk> wrote: >> > ... one of those Alps 4-pen plottre mechanisms. Unfortunately, >> > as wityh many such plotters, the motor pinion gears have split with time, >> > so it's not useable at the momnet, I should have a go at cutting soem >> > replacements... >> >> ? ?Sounds like it's RepRap time.. > > Assuming that's one of those '3D printers'. I doubt it has the resolution > to make something like this. It does not (as I mentioned in my previous message that you might not have seen), *but* I may have an alternative method to use this technology. > The pinions are about 3mm overall diameter Yes. > and have perhaps 10 or 12 leaves (teeth to the rest of you ;-)) Something like that, yes. I don't recall the precise number and can't find the previous discussion threads that have happened on this list over the years. I realize that to a trained machinist with the right tools, cutting gears is just another day on the job. I am very much a novice when it comes to lathes and mills. To me, cutting a gear that's 3mm across the face is a serious challenge. It's also time consuming - paying someone else to do it starts to get rather expensive (at two pinion gears per mech). The size is a bit on the small side, but it may be possible to order printed gears made from sintered metal from Shapeways. Their requirements are that all dimensions be 2.5mm or larger. This gear barely qualifies. If someone just happens to have an STL-format file of this gear, that'd be terrific, but if not, if one has a 2D image of the face of the gear, OpenSCAD or, now, the Shapeways website itself, can easily extrude a flat outline to a 3D version of the silhouette. One such tool for generating (self-described low precision) gear patterns is here: http://woodgears.ca/gear_cutting/template.html ... and I'm sure there are many others. Shapeways charges by the cubic centimeter of material used. There's not much volume in a 3mm-diameter gear with a 1.3mm-diameter hole in it - my first estimate is under 20 mm^3 (a cube 3mm on a side is 27 mm^3 after all). You could fit 27 gears in 1cc with lots of room to spare, and 1cc of Shapeways "stainless" bills at $10 with no apparent setup fees for standard finishes. I haven't handled any of Shapeways' metal products, but I'm imagining a surface smoothness based on the grain size and the laser focal point diameter and the stepper resolution, but until clarified, I'd consider 300dpi to be a starting point for estimation purposes. One can do some shaping and smoothing work after the printing process, naturally, but the less of that required, the better. So is there anyone here who has the CAD skills to draw a gear, or at least sufficient skills as a machinist to completely and adequately describe the critical parameters for someone else to work from? I think it could be inexpensive to do a run of a handful of gears through Shapeways. Because of the strictly functional nature of the part, there should be no worries of trademark or other IP infringement, to head that discussion off. I can bang out something that's close, but I don't believe I have the skills to evaluate if my attempts would be close enough (specifically something that's going to fit on the motor shaft and not chew up the next gear in the train). Is there anyone here willing to draft a gear profile or at least parametrically describe the gear in terms suitable for reproduction? If so, I can see about taking that beginning to the next stage. -ethan

15 years

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S-100 6502 CPU board prototype

by lynchaj＠yahoo.com

Hi, at the N8VEM project we were working on an S-100 6502 CPU board. It was built as a wire wrapped prototype and the design has been shown to work. Since then, we've designed a PCB and have some prototype boards. Most of those have already been sent to builders. However due to some injuries and other unfortunate events, those projects are on hold indefinitely. I still have one S-100 6502 CPU prototype board left. I have high confidence in this design that it will boot with little or no modifications. If we could get a volunteer to build and test this board, then I could get additional PCBs for other S-100 builders. However, without some knowledge of whether the actual PCB really works, I am hesitant to release it quite yet. If you are an experienced builder, familiar with S-100, and would like to volunteer to build and test this prototype PCB, I will send it to you at no charge. All we really need for confirmation is that the S-100 6502 CPU board can boot with a basic monitor ROM. There is some sample code available for a notional S-100 6502 CPU board boot ROM. Basically, this project is stalled at its very last step and I would like someone to volunteer to build and test the prototype for confirmation of the design. Certainly this is not for everyone but if you would be willing to help out I would greatly appreciate it. Please contact me by email. Thanks and have a nice day! Andrew Lynch

15 years

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