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

message

by qkalfut＠yahoo.com

http://apextrans.net/qneysv/bevktn?xidfphjplfi

13 years, 5 months

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I'm baack...

by woyciesjes＠sbcglobal.net

Well, it's been about a 3 year hiatus from the list for me... How many of the old farts & curmudgeons are still around? ;) One burning question, has the list's definition of a classic computer been updated from the 10 year rule? -- --- Dave Woyciesjes --- ICQ# 905818 --- AIM - woyciesjes --- CompTIA A+ Certified IT Tech - http://certification.comptia.org/ --- HDI Certified Support Center Analyst - http://www.ThinkHDI.com/ Registered Linux user number 464583 "...Talking to you is like clapping with one hand." Anthrax, "Caught in a mosh"

13 years, 5 months

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OT: 1000 year DVD storage

by barythrin＠gmail.com

I can't wait to find my 1000 year old or perhaps my great-great-great...at grandkids will finally be able to access my password protected zip file. Maybe this is an investment call to collectors who get called upon to recover media?

13 years, 5 months

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virtual library

by sales＠elecplus.com

I found the Virtual Library today, vlib.org. MANY interesting sites, check it out! Cindy Croxton _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2904 / Virus Database: 2641/6195 - Release Date: 03/21/13

13 years, 5 months

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Vertical stand for IBM 7043-43P

by BHuntsman＠mail2.cu-portland.edu

Hi! Anyone have a vertical stand for an IBM 7043-43P they'd be willing to sell? Many thanks! -Ben

13 years, 5 months

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Surplus and haunts in LA?

by rdawson16＠hotmail.com

Relocating, and looking for your recommendations to feed the electronics/computer/ham habit. I'm thinking there must be a ton of aerospace junk for sale, or perhaps today its sadly shredded. Whats out there on the West Coast in the LA area? Randy KF7CJW

13 years, 5 months

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OT: 1000 year DVD storage

by barythrin＠gmail.com

I may buy one in 1000 years if it proved to last that long. Reads a lot like a life time guarantee scam though. After the main batch of sales the company pays out employees then declares bankruptcy and you have your 1 year lifetime guarantee till they come out with a separate second company with the same name with a 2 and do it all over again. Its clever.

13 years, 5 months

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VMS documentation binders to give away

by barythrin＠gmail.com

Out of curiosity what language are the manuals written in?

13 years, 5 months

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"Lifetime" guarantees [was Re: OT: 1000 year DVD storage]

by a50mhzham＠gmail.com

At 05:34 PM 3/21/2013, you wrote: > > Back when I was a kid, there was a brand of tool - I think it was the > >That would be Craftsman. They still honor that guarantee, even for new >tools. Power tools are not covered this way, however. Ah, but the great thing about Sears power tools is that you can still get parts for them. I still use the router I got from my dad. He got it in the 60's -- and it was a rebuild then. About 5 years ago, I needed to replace the bearings and thought I'd replace the collet while I was at it. I went online, found the manual with a parts diagram, ordered the parts, and got myself a like-new router out of it. 767 . [Truth] Whoever undertakes to set himself up as judge in the field of truth and knowledge is shipwrecked by the laughter of the Gods. --Albert Einstein a50mhzham at gmail.com ? N9QQB (amateur radio) "HEY YOU" (loud shouting) ? Second Tops (Set Dancing) ? FIND ME ON FACEBOOK 43? 7' 17.2" N by 88? 6' 28.9" W ? Elevation 815' ? Grid Square EN53wc LAN/Telecom Analyst ? Open-source Dude ? Musician ? Registered Linux User 385531

13 years, 5 months

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Looking for information on Old Hewlett Packard Machines

by michael＠almegacy.com

Does anyone have information on how to get initial sale date for old Hewlett Packard computers? The current system that HP has doesn?t cover old computers from the early 1990s. I am trying to find date of sale for the systems below, and if possible, the country in which they were originally registered: ? Hewlett Packard Series 9000 712/60 (Model Number A4024A), Base Model Number A2615A, Serial Number: 6420A50415 ? Hewlett Packard Series 9000 712/60 (Model Number A2854A), Base Model Number A2615A, Serial Number: 6406A50027 ? Hewlett Packard Series 9000 712/60 (Model Number A4023A), Base Model Number A2615A, Serial Number: 6428A50358 ? Hewlett Packard Series 9000 A2051-66521 HP 9000 E35 64Mhz CPU, Serial Number: 40110293VF Is there a database for old HP computers that someone can direct me to find out information on these? Thanks!

13 years, 5 months

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RK05 drive foam deterioration and replacement

by Carl.Claunch＠gartner.com

I just picked up an RK05AA drive, unknown condition but it appears in good shape internally. As I was going through a detailed inspection, I touched the foam that surrounds the air duct that connects to the access door on the cartridge, delivering clean air. The foam flaked off and seems to be deteriorating. Not as badly as the foam used in Selectric typewriters, which has turned to sludge after a few decades, but not something I want releasing particles into an air stream that will flow under the heads. Is this a known issue with the drives? What do people who restore/repair these do to eliminate this source of contamination into the cartridge? I would like to address this before I install a new absolute filter. Any tips for a substitute for the CE pack when I get to the point of loading heads and adjusting the drive? Carl ________________________________ This e-mail message, including any attachments, is for the sole use of the person to whom it has been sent, and may contain information that is confidential or legally protected. If you are not the intended recipient or have received this message in error, you are not authorized to copy, distribute, or otherwise use this message or its attachments. Please notify the sender immediately by return e-mail and permanently delete this message and any attachments. Gartner makes no warranty that this e-mail is error or virus free.

13 years, 5 months

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FS: AMD "Build A Microcomputer"; Abacus "OS/2 Complete"

by charlesmorris800＠centurytel.net

More housecleaning :) 7-part "Build a Microcomputer" looseleaf application note series from AMD 1978, based on their 2900 series devices. Chapters are: Computer Architecture, Microprogrammed Design, The Data Path I & II, Program Control Unit, Interrupt, Direct Memory Access. $5 plus Media Mail shipping from 65775. "OS/2 Complete: A practical guide to the OS/2 operating system" version 2.1 by Peter Franken, 1992. $3 plus shipping. thanks Charles

13 years, 5 months

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FS: MS-DOS & Turbo Pascal books

by charlesmorris800＠centurytel.net

FS: Microsoft MS-DOS 5.0 "User's Guide and Reference", $5 plus Media Mail shipping from 65775; Borland "Turbo Pascal for Windows User's Guide". $3 plus shipping. Also "Microsoft Windows Graphical Environment User's Guide" Version 3.0 from the Z-Nix Company, $2 plus shipping. thanks Charles

13 years, 5 months

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The RICM Needs Two DEC BC09A Cables

by michael.99.thompson＠gmail.com

The RICM has their PDP-9 processor and core working nicely now, except for the DAC and DZM instructions. Once we get the processor and paper tape reader/punch restoration completed the next task will be connecting the TC59 tape controller and the TU20 tape drive. Bitsavers has the TC59 manuals. I bought an HP 7975A maintenance manual for the TU20 tape transport that is now scanned and on Bitsavers. We don't have any documentation for the rack of electronics in the bottom of the TU20 that connects the 7975A to the TC59. Does anyone have DEC TU20 documentation? Where could we find two BC09A cables to connect the TC59 to the PDP-9 processor? -- Michael Thompson

13 years, 5 months

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I'm baack...

by mcguire＠neurotica.com

On 03/21/2013 03:19 PM, Bill Sudbrink wrote: >>>> I've got this WONDERFUL >>>> *****RARE***** >>>> **** SUPER CLASSIC ***** @@@@ LOOOK @@@@******MUST SEEEEEEE****** >>>> ****////ORIGINAL DELL/////****** >>>> 2.8GHZ *SCREAMER FOR ITS TIME* PENTIUM *4* (NOT MANY LEFT!!!!!) >>>> >>>> **** TWO GIGS OF RAM**** SMALL IN OUR TIME, BUT HUGE, HUGE >> ABSOLUTELY >>>> HUGE >>>> FOR A WORKSTATION OF THAT PERIOD. >>>> >>>> FOR A LIMITED TIME ONLY FOR SALE ON THE MARKET~!!!!!! ORIGINAL LIST >> PRICE >>>> $1,400 YOURS NOW FOR A LIMITED TIME BID STARTING AT $10,000 >>>> >>>> GOOD LUCK AND HAPPY BIDDING!!!! >>>> >>>> >>>> >>>> I died a little inside typing that out. >>>> >>> If it's any consolation, I died a little bit reading it. >> >> ROFL!! > > Dave McGuire, man of action, laughs in the face of death. "Sport death: Only life can kill you." -- Dave McGuire, AK4HZ New Kensington, PA

13 years, 5 months

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VMS documentation binders to give away

by p.gebhardt＠ymail.com

Hello everybody, there are eight grey VMS documentation binders to give away which are duplicates in my collection: -Volume 2a and 2b: Introduction to VMS, Guide to Using VMS, Guide to VMS Files and Devices, Mail Utility, Phone Utility, Sort/Merge Utility (VMS version 5.0) - Release Notes: Volume 2: Release Notes (VMs version 5.4) - General User: volume 1: General Information: Master Index, General User Master Index, Glossary (VMS version 5.0) - General User: Volume 3: Using DCL: DCL Concepts, Guide to Using Command Procedures (VMS version 5.0) - General User: volume 4: DCL Dictionary (VMS version 5.0) - General User : volume 5A:Processing Text: Guide to Text Processing, EDT Reference (VMS version 5.0) - General User : volume 5C: Processing Text: DIGITAL standard Runoff, EVE Reference (VMS version 5.0) - Programming: Volume 8: Device Support: Device Support Manual(VMS version 5.0) First come, first serve, I give them away for free whoever is interested in them. You only have to take care of the shipping costs. Documents are located in Germany near the belgian and dutch boarder. Kind regards, Pierre ? ------------------------------------------------------------------------------- Pierre's collection of classic computers : http://classic-computing.dyndns.org/

13 years, 5 months

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Data Converter Reference Manual

by wmachacek＠q.com

I have the Analog Devices, Inc., "Data Converter Reference Manual", Volumes I & II, 1992 edition. These are big and heavy (3 pounds apiece). I am no longer interested in keeping these manuals around. I will be willing to send these to anyone who is willing to pay for the shipping (via Media Mail). It looks like the cost will be a little over $5, so the first person with $5 who wants these manuals can get them. Thanks and I'll be checking this list to see who, if anyone, is interested. Bill Machacek Colo. Springs, CO

13 years, 5 months

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OT: 1000 year DVD storage

by tom_a_sparks＠yahoo.com.au

----- Original Message ----- >>??Perhaps not close to 1000 years, but certainly across a lifetime spam--I > > In 1000 years, well past our lifetime, will there BE anything besides > "spam" > >>??would think that these would be handy for preserving family photos, >>??particularly of important events such as weddings. > > Other than archeologists, in 1000 years, who is going to WANT our data? there are a few known facts: * every generation well want to relive their childhood * military/corporate project become cheaper and enter the consumer market[1] * new data mining methods are discovered * old information has value but is lost/miss-placed/destroyed before the true value is discovered (wiping) [1] 3D printers, Remote control vehicle, computers, etc tom

13 years, 5 months

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Anyone have any interest in an NCD ThinStar 300 "terminal"?

by seefriek＠gmail.com

Ethan Dicks <ethan.dicks at gmail.com> writes: > >Apparently I did, but the URL - www.ncd-x.com/doc/TerminalUsersGuide.pdf - >made me think it was the original company. Nice they put the manuals up, but sure would be nifty if they put the last software for the traditional X terminals (e.g. HMX) up. As far as I know (and I haven't burned many cycles checking) that all died long before NCD did. Probably shouldn't have tossed my (pre-HMX) NCD with X in (many) PROMs, but it was mono X11R2/3-ish and not much past xterm/Xaw worked that well, post year 2000.

13 years, 5 months

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Anyone have any interest in an NCD ThinStar 300 "terminal"?

by ethan.dicks＠gmail.com

Hi, All, A friend of mine who repairs and recertifies equipment occasionally runs across interesting hardware. He has an NCD ThinStar 300 WinCE thin client box that he was planning on scrapping (for the PSU, the metal, the PCB, the CPU, etc) but I thought I'd ask if anyone has enough interest to offer something for it to cover shipping and the time to pack and ship it. I'm told it works. Internally, it's some flavor of Pentium with a passive heat sink, a couple of PC-100 SDRAM DIMMs, a Crystal Sound audio chip, and some flavor of Ethernet. I found a manual on the NCD site with little effort. Anyone interested? Make an offer and I'll pass it along. It doesn't have to be an outrageous offer, just enough to make it worth the time to not strip it for the PSU and a small amount of electronic recycling value. -ethan

13 years, 5 months

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Thomson T-VT 6000 terminal in Ireland (ebay)

by legalize＠xmission.com

Looks worth saving if anyone is nearby. <http://www.ebay.com/itm/111032447415> -- "The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline> The Computer Graphics Museum <http://computergraphicsmuseum.org> The Terminals Wiki <http://terminals.classiccmp.org> Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>

13 years, 5 months

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Free: Solaris 2.5.1 Sparc Desktop

by kurt.m.nowak＠gmail.com

Dug up a copy of Solaris 2.5.1 Sparc Desktop while sorting out my stuff...All the manuals and disks all seem to be in the box...I know its a bit useless and dated considering other better OS alternatives for older Sparcs. Does anybody want this? I'll just send it in a USPS flat rate box. Contact me off the list if interested. I am in the San Diego area, 91942. -Kurt

13 years, 5 months

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Otrona Attache 8:16 DOS board debugging tip

by derschjo＠gmail.com

Thought I'd share this, just so it at least gets archived for posterity... Idug out my Otrona Attaches this week and decided to try and fix the16-bit (aka "almost PC-compatible") board in one of them. The symptom was that the board would run correctly for maybe 90 seconds before it would crash. The built in diagnostics (for ROM rev. H) can test the RAM on the 16-bit board (using the "[" command from the monitor), and doing so revealed that the RAM test would pass for a little while and then start failing, indicating "U66" as the fault.According to the service manual this indicates the actual faulty chip on the board. Not so! Replacing U66 had no effect. I then got out my Fluke 9010 w/8086 pod (I'm just dying for excuses to play with this thing...) and had ittest the RAM (the 16-bit board contains 256K). RAM from word 0x20000 to 0x3FFFF was fine, but the lower half of RAM started showing bit 0x4000 stuck after warm up -- looking at the Otrona schematic (http://oldcomputers.net/Attache_Schematics.pdf) this would point to chip U61 (which services bit 14 for the lower half of memory), not U66(which is bit 14 for the upper half). So: Moral of the story is the Attache's attempt at being helpful is simply misleading, alas.Hopefully this helps someone else someday :). - Josh

13 years, 5 months

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IC programmer with rs232?

by brain＠jbrain.com

Anyone know a good rs232-based programmer? I have a willem (great unit, use it all the time, hate the switches), and a Gq-4X USB unit (nice unit, no switches, A14 is a bit weak and won't program my ROM-3l 23128 devices). But, I was considering setting up a small set of scripts on a UNIX/linux box here that could program items via a menu, and thought a serial (or usb serial) would be easiest to script. I could grab an older unit (though I didn't turn up promising links in half hour os searches tonight), but I'd prefer it support at49F series FLASH. Jim -- Jim Brain brain at jbrain.com www.jbrain.com

13 years, 5 months

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Kaypro II floppy identification?

by xmechanic＠landcomp.net

OK, so I dug the Kaypro II back out of storage now that I have some usable floppy disks, thanks to a good friend. :) Anyway, I found out that the current A: drive wasn't being detected in the BIOS on my disk creation machine. B: disk works fine. Checked all connections and made sure everything was seated properly, and still no luck. So I pulled both drives and inspected everything and then just swapped positions and re-installed them, hoping that the different positions on the cable was what selects which drive is which. Well, not so. The machine still tries to select the original A: drive. Is there a jumper setting on these old full bay 5 1/4 floppies to select the drive ID? Any ideas? -- Dave Land Land Computer Service Check out my site at http://www.landcomp.net

13 years, 5 months

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Compaq Portable II Power Supply schematic (or capacitor ID)

by derschjo＠gmail.com

Powered up an old Compaq Portable II and was greeted with a cloud of smoke; a tantalum cap's gone to capacitor heaven (it's next to silicon heaven).Unfortunately it's now so far gone I can't read its value -- anyone have a schematic or know what the capacitor at C19 is supposed to be? Thanks, Josh

13 years, 5 months

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OT: 1000 year DVD storage

by barythrin＠gmail.com

You will but you won't have the sata connector. I guess its immune to that bacteria or fungus and/or scratching of the label? I've had lots of cds I've burned go bad in their padded cd holder. (Holes/flakes in the label) making it a seemingly poor decision unless I burned 2 or more of each archive. ------Original Message------ From: Chuck Guzis 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: OT: 1000 year DVD storage Sent: Mar 19, 2013 3:54 PM The M-Disc claims 1,000 year permanency. http://www.mdisc.com/ Anyone have experience with these? --Chuck (wondering if we'll be able to find a 1,000 year old DVD player)

13 years, 5 months

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Is it what the caption says?

by lproven＠gmail.com

http://www.reddit.com/tb/1ak85m Pic alone: http://i.imgur.com/JkSx01y.jpg?1 Caption: My professor showed us 1 byte of data from one of the first ever computers. Amazing to see how far we've come! Discussion: http://www.reddit.com/r/pics/comments/1ak85m/my_professor_showed_us_1_byte_… -- Liam Proven ? Profile: http://lproven.livejournal.com/profile Email: lproven at cix.co.uk ? GMail/G+/Twitter/Flickr/Facebook: lproven MSN: lproven at hotmail.com ? Skype/AIM/Yahoo/LinkedIn: liamproven Tel: +44 20-8685-0498 ? Cell: +44 7939-087884

13 years, 5 months

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Selling a DEC RX02 on Ebay

by aperry＠snowmoose.com

On Mar 17, 2013, at 1:36 AM, R SMALLWOOD <rodsmallwood52 at btinternet.com> wrote: > > I have several of these beasts. > I do go back to when they were current equipment. > The price asked for an RX02 in unknown condition is well over the top. > The shipping price may not be far off as they weigh a ton!! I got one with my 11/750 15 years ago. I sold it for around $200, close to what I paid for the entire system. It was a local sale and I don't recall the drive's weight. alan

13 years, 5 months

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Homebrew mark-sense card reader or other?

by earl＠retrobits.com

Hi all, I need another project like I need a hole in the head. However, I am definitely on the prowl for a way to store and retrieve information in a more physical fashion. Something like a tape punch/reader, or a mark-sense card reader. (I'd have to find or print some mark-sense cards...) Back in the day I used punch cards, mark-sense cards, and paper tape. There's a certain "coolness" to actually seeing and holding the data in a physical format. I think it would be great for my kids to see, and/or help me build a physical storage device, to give them a more visceral sense of computing. You can't exactly see the bits in a flash memory chip. All that said - I've looked for homebrew projects of this type, and haven't come up with any great candidates. I'm not the most skilled person at mechanical stuff, so I do seek a starting point for ideas or plans. Anyone have any comments/suggestions? Goal would be a method to store (could be as simple as #2 pencil), a method to read, and a serial RS232 interface (that part I can build). Thanks! - Earl

13 years, 5 months

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BB-M448B-BC DECNET11/M+ V2.0 DECKIT?

by bob＠jfcl.com

Bitsavers has the file BB-M448B-BC_DECNET11M+_V2_NETKIT_1984.tap which is (sadly!) exactly half of the DECnet-11M v2.0 for RSX. Missing is the corresponding DECKIT tape. I know it's a long shot, but would anybody out there have it?? Yes, bitsavers does have the NETKIT/DECKIT pair for V3.0 and V4.2, but I need the older version. Thanks, Bob Armstrong

13 years, 5 months

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FS: various (old) 68-pin and 50-pin SCSI disks

by marcogb＠xs4all.nl

Anyone interested? Pretty much everything from 1 Gbyte to 9.1 Gbytes that can go, from various vendors (Seagate, Compaq, Quantum, Micropolis, IBM, etc.). The disks have recently been tested. Furthermore, the disks are located in the Netherlands and I will happily ship to wherever desired and covered for. - MG

13 years, 5 months

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Apple II+ Lego

by christian_liendo＠yahoo.com

This is rather nice...? http://www.flickr.com/photos/chiukeung/8565233993/in/photostream I also liked the Mac Lego http://www.flickr.com/photos/72974131 at N00/8412086698 and the Sinclair ZX-81 Lego http://www.flickr.com/photos/hairydalek/sets/72157629011228815/?

13 years, 5 months

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Old manuals -- Need archiving?

by v.slyngstad＠frontier.com

A friend sent me a list today of documents he has, wondering if they are of interest to classic computer folk. Most of these categories are outside my expertise, so I'm asking here if these should get archived, and if so who volunteers to do it :-). Here's the list: Control Data 6000 Series manuals ===================================================== Kronos 2.1 Instant Manual Control Data Cyber 70 Series Models 72/73/74 6000 Series Computer Systems Kronos 2.1 Terminal User's Instant Manual Control Data Cyber 70 Series Models 72/73/74 6000 Series Computer Systems Small (6.5" x 4") "pocket" manuals for operating the Kronos OS original printing dated 10/1973 Algol Generic Reference Manual Control Data 3000/6000 Revision A, 5/31/1968 Modify Reference Manual Control Data Cyber 170, Cyber 70, 6000 Series and 7600 computer systems Card based version control Revision E, 10/1/1974 APL*Cyber Reference Manual Control Data Cyber 170, Cyber 70, 6000 Series and 7600 computer systems Revision C, August 1974 Oregon State Open Shop Operating System (OS3) ==================================================== Assembly listing of OS3 operating system dated September 1974 Assembly language listing of core operating system. OS3 was a demand-paged, virtual memory, multi-user operating system that used a PDP8 as a front end to multiplex many teletypes scattered around the Oregon State campus. OS-3 Reference Manual for OS-3 Version 4.3 July 1973 OSU: Grope User's Manual January 1972 "Grope" (Graphical Representation of Parameterized Expressions) was an input and graphing system running on OS-3 and a Tektronix 4002A terminal. Grafit User Notes February 1973 Jeff Ballance, Jo Ann Baughman, Larry Hubble "The GRAFIT system is an interactive program for displaying data on the Tektronix terminal and/or the Calcomp plotter or on a Hewlett-Packard teletype compatible X-Y plotter and/or the Calcomp plotter." Various OSU computer center manual on editing tools Useful Features of OS-3 James S. Sasser August 1974 Primer for Users of Oregon State's Open Shop Operating System (OS-3) September 1972 A Brief Description of OSCAR (Third Revision)(Describes Version 56) Joel Davis, Gilbert A. Bachelor September 1969 "OSCAR" (Oregon State Conversational Aid to Research) is an arithmetical interpreter for use at remote teletype or CRT connections to the CDC 3300." OSCAR: A User's Manual with Examples (revised September 1969) Jo Ann Baughman, Mary Lynn Berryman, Joel Davis September, 1969 MISC ==================================================== Concurrent Pascal - Introduction Per Brinch Hansen Concurrent Pascal Machine Per Brinch Hansen Concurrent Pascal Report Per Brinch Hansen Sequential Pascal Report Per Brinch Hansen Alfred C. Hartmann Information Science California Institute of Technology 7"x10" manuals published in July 1975 Laural Manual Douglas K. Brotz Palo Alto Research Center "Laural is an Alto-based, display-oriented, computer mail system interface." published May 1981 Sail Stanford Artificial Intelligence Laboratory Memo AIM-289, Report STAN-CS-76-578 edited by John F. Reiser August 1976 "Sail is a high-level programming language for the PDP-10 computer. It includes an extended ALGOL 60 compiler and a companion set of execution-time routines. In addition to ALGOL, the language features: (1) flexible linking to hard-coded machine language algorithms, (2) complete access to the PDP-10 I/O facilities, (3) a complete system of compile-time arithmetic and logic as well as a flexible macro system, (4) a high-level debugger, (5) records and references, (6) sets and lists, (7) an associative data structure, (8) independent processes, (0) procedure varaiables(sic), (10) user modifiable error handling, (11) backtracking, and (12) interrupt facilities." various UNIX 'man' printouts and misc manuals. Things like: Berkeley Font Catalog (October 1980) Typesetting Mathematics -- User's Guide (Second Edition) Brian W. Kerninghan and Lorinda L. Cherry Bell Laboratories, August 1978 Typing Documents on the UNIX System: Using the -ms Macros with Troff and Nroff M.E. Lesk Bell Laboratories, May 1982 ... many more UNIX Nroff and Troff manuals ba.uuYumYum (March 1986) a dining guide compiled from reviews public in group ba.general -- o< The ASCII Ribbon Campaign Against HTML Email!

13 years, 5 months

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My Apple Lisas on Youtube

by terry＠webweavers.co.nz

Two grand old ladies from my classic computer collection. The Apple Lisa 2 and Lisa 2/10 http://youtu.be/mm0hqVVjY48 Tez

13 years, 5 months

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Shipping Heavy/Large Items Via UPS

by elson＠pico-systems.com

>> Message: 3 >> Date: Mon, 11 Mar 2013 06:09:10 -0400 >> From: Bob Vines >> To: General Discussion: On-Topic Posts Only <cctech at classiccmp.org> >> Subject: Re: PDP 11/23 advice >> Message-ID: <513DAD46.2010300 at verizon.net> >> Content-Type: text/plain; charset=ISO-8859-1; format=flowed >> > > > UPS will ship fairly large items in their cardboard boxes, but it's > *expensive*. I recently received some DECmates with their RX02s > (which were still in their furniture/carts). Each 3x3x3 box weighed > nearly 150 pounds. > I've had bad experiences shipping heavy stuff with UPS. I've had great luck with FedEx, and FedEx ground is quite reasonable. The UPS store is not operated by by UPS, and their insurance is VERY expensive, probably 4 times more than FedEx. UPS admits the way they unload their semis is to push everything out onto the ground. Also, the UPS store charges $16 to 25 for each box, at FedEx, they are more like $5. Jon

13 years, 5 months

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ebay Vintage Imlac PDS 1 kinda over priced

by barythrin＠gmail.com

My condolences to all of ya. I can only imagine the emotion seeing rescues and personal work getting sold by scrappers.

13 years, 5 months

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Bendix G-15

by elson＠pico-systems.com

Message: 10 Date: Sun, 17 Mar 2013 18:32:26 -0500 From: "Craig Solomonson" <craig at solomonson.net> To: cctech at classiccmp.org Subject: Resurrecting a Bendix G-15 Message-ID: <8e4be175ad314f9ab0f5ebe075accc8a.squirrel at www.solomonson.net> Content-Type: text/plain;charset=iso-8859-1 I was going through some boxes of old documents as I prepare to thin out my computer collection and ran across a couple leads that I had 30+ years ago on a couple early vacuum tube era computers--one was a Bendix G-15 and the other was a Royal Precision LGP-30. Thought it would be fun to see if either computer was still there and turns out that the Bendix G-15 is buried in a storage unit yet! I haven't heard back on the LGP-30 yet. When the weather warms up, I will get a chance to help dig out the Bendix and hopefully make a deal on it. Apparently, the Bendix was operational before going into storage in the mid-1970's. So, what are the chances that after sitting for almost 40 years that it would still be operational? I know that vaccum tubes can deteriorate but those are easy to replace. What about the capacitors, resistors, and diodes? I do not know if the storage unit was climate controlled, but if not, I assume corrosion could be a problem with all the contacts. What other issues might one expect with an old system like this? Unfortunately, I am not an electronics expert but always like a challenge. I now regret selling my Bendix Diode tester a few years ago on eBay! Maybe I will have to rent in some day if I make the deal! Wow, that would be a real antique, and there are VERY few G-15's running. Testing the diode cards would not be that big a problem even without the tester. Major capacitors in the power supply would be best replaced before they exploded. Our G-15 had a scored drum, where dirt packed against the heads and burned a groove through the oxide coating. The other thing that didn't work well was the typewriter. I don't know if it was the typewriter itself or the huge box of relays that encoded/decoded the character codes that was flaky. Jon

13 years, 5 months

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Needed: older connector power cord

by technobug＠comcast.net

On Mon, 18 Mar 2013 14:36:51 -0600, Richard <legalize at xmission.com> wrote: > OK, I've got an HP X-Y display with the older power cord connector, > where the three pins are round instead of two being blades and the > only the ground pin being round. The entire plug socket is also > rounded instead of angled. > [?] I believe what you are looking for is a PH-163 connector. AFAIK the last (current) manufacturer was/is Volex part number 17280 <http://www.datasheets.com/search/Preview.admin?v=0&flag=detail&comId=43188B…>. ->CRC

13 years, 5 months

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sperry univac stamps?

by tdk.knight＠gmail.com

recently been given a box of sperry univac stamps not sure what to do with them yet kinda kool and random http://img341.imageshack.us/img341/9779/dsc9873l.jpg

13 years, 5 months

8
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eBay: PDP9 (or 15?) core memory

by hachti＠hachti.de

Hi folks, there's an interesting complete core memory system on eBay: http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&item=190813695638 And yes: I'm the seller. But it does not come from my personal collection: I'm selling it for someone else. Perhaps someone on the list likes it. Personal offers by E-mail, not E-Bay... Kind regards, Philipp :-) -- Dipl.-Inf. (FH) Philipp Hachtmann Buchdruck, Bleisatz, Spezialit?ten Alemannstr. 21, D-30165 Hannover Tel. 0511/3522222, Mobil 0171/2632239 Fax. 0511/3500439 hachti at hachti.de www.tiegeldruck.de UStdID DE 202668329

13 years, 5 months

2
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ebay Vintage Imlac PDS 1 kinda over priced

by mhs.stein＠gmail.com

----- Original Message ----- Date: Wed, 13 Mar 2013 16:14:10 -0700 From: Jim Stephens <jws at jwsss.com> On 3/13/2013 1:41 PM, TeoZ wrote: >> -<snip> >> Pretty much every collection has that happen when the owner dies or fall >> on hard times. At least some of it will go on in another persons >> collection. >This was not either of those circumstances, unless you call unethical and >possibly illegal behavior toward the individual "hard times". >I am hopeful most can own the place they store their collections or can at >least have some real control. renting can result in what happened in this >case. ... ----- Reply: No, there are laws in pretty well every jurisdiction that protect a *responsible* renter from this sort of thing and are in fact generally even biased in the renter's favour. But repeatedly not paying the rent on time (or at all), jerking the landlord around with excuses, broken promises and missed deadlines, taking him to court to fight a justified eviction and no doubt costing him considerable money in legal fees etc., and, finally, not clearing out the contents when given the opportunity to do so, *THAT'S* what usually predictably results in what happened in this case. You're right, this is not a case of the owner dying or falling on hard times with no way of coming up with the rent (like selling off a duplicate piece or two or asking for help); it's irresponsibility and negligence and if I'd donated something in good faith I'd be pretty pissed when I saw it being flogged on eBay as a result... m

13 years, 5 months

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DEC Q-Bus DLV11 M7940 SLU Documentation

by pbirkel＠gmail.com

Can some kind soul point me to the technical documentation for the Q-Bus DLV11 M7940 Serial Line Unit? It has a 2x20 pin-out connector of unknown. I gather that it's a pretty common card, so I'd expect the documentation to still be "out there" ... like the truth :->. Not the DLV11-J, which is the 4-line card. The only good news is that the MC1488 and MC1489 are nearby, which will help a little. But documentation is *much* better! Probably any of its variants will do just fine (e.g., M7940-YA "M7940 W EXTRA WIRES TO BRING OUT CLOCK & 110/300 SPEED CHG"). Attached is what I've thus-far been able to find, which is jumper-info dug out of a paper-tape reader manual! Thank you, paul

13 years, 5 months

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flatbed scanners with ADF

by sales＠elecplus.com

We have 10+ flat bed scanners, mostly SCSI, with ADF attachments. Most of them are HP, a few are AGFA or another brand. $20 each plus shipping, tested working. No software included. Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 (830)792-3400 phone (830)792-3404 fax AOL IM elcpls _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2904 / Virus Database: 2641/6185 - Release Date: 03/17/13

13 years, 5 months

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old scanners

by sales＠elecplus.com

I have 2 old, heavy machines that I looked up on Google over 10 years ago. 1 appears to be Unix-only document scanner with sheet feeder. The original software, which came on 5.25" floppies, had OCR software. I MIGHT still have the floppies here somewhere. Anyone interested in these 2 old beasts? Bell & Howell Classic TDR-500 is apparently for microfilm capture? Parts are still readily available online, if needed. Xerox K5200 model SA4-2 with ADF-4, includes 2 very thick cables. Both very dusty/dirty, never turned on. Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 (830)792-3400 phone (830)792-3404 fax AOL IM elcpls _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2904 / Virus Database: 2641/6185 - Release Date: 03/17/13

13 years, 5 months

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Library machines

by jbmcb1＠gmail.com

My earliest memories of seeing computers in action were at the library. Old ADM-3 terminals with light pens to scan in barcodes on the books and on your library card. Plus the muffled sound of a line printer in back doing lists of late check-outs. This would have been in the 1980's. The library I used to go to still had those ADM's well into the '90s, then replaced with gray sided, amber screened WYSE VT-100 lookalikes. But the UI looked the same, so I assume the backend was the same. Anyone know what minis ran library management software back then? I know the university I went to was all Amdhal with 5250 terminals, but the local libraries obviously used something smaller.

13 years, 5 months

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Selling a DEC RX02 on Ebay

by filipmaj＠gmail.com

Here is the link: http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=151012639827

13 years, 5 months

7
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IBM 5150 ROMs

by mtapley＠swri.edu

At 20:32 -0600 3/1/13, <Ben> wrote: >Offhand I would say yes. Now 20+ years later I don't have any paper >docs of the COCO II and the XT. For Color Computer The Byte article on COCO (original) says 800 mV 1500 bps. Greg Lomont's Color computer guide says: Color BASIC saves a file as a series of blocks, each with 0-255 bytes of data. Some blocks need preceded by a leader to establish timing. Each bit is recorded as a single cycle of a sine-wave. A "1" is a single cycle at 2400 Hz, and a "0" is a single cycle at 1200 Hz. Bytes are stored least significant bit first. Bits are recognized when the sine wave crosses from positive to negative, so loudness is not as important as one might expect. A file consists of: 1. a leader 2. a filename block 3. a 1/2 second gap 4. another leader 5. some number of data blocks 6. an end-of-file block A leader is just hex $80(128 dec) bytes of hex $55 (binary 01010101). A block contains: 1. two "magic" bytes ($55 and $3C) 2. one byte - block type (00=filename, $01=data, $FF=EOF) 3. one byte - data length ($00 to $FF) 4. 0 to 255 bytes - data 5. one byte - checksum (sum of data, type, and length bytes) 6. another magic byte ($55) Filename blocks have $F(15) bytes of data; EOF blocks have zero bytes of data; data blocks have $00-$FF bytes of data indicated by length byte. A filename block contains: 1. eight bytes - the filename 2. one byte - file type ($00=BASIC, $01=data, $02=machine code) 3. one byte - ASCII flag ($00=binary, $FF=ASCII) 4. one byte - gap flag ($00=no gaps, $FF=gaps) (The tech manual incorrectly (?) shows 01 as the code for "no gaps") 5. two bytes - machine code starting address 6. two bytes - machine code loading address There should be no gaps, except preceding the file, and in case the filename blocks requests gaps, in which case there is a 1/2 second gap and leader before each data block and EOF block. Hardware The cassette cable has a 5-pin DIN connector on one end, that plugs into the back of the CoCo; the other end has three earphone-style plugs, that plug into the EAR, AUX (or MIC), and REMOTE jacks. The remote-control plug is smaller than the other two. The other two are differentiated by color: the black one plugs into the EAR jack, while the grey one plugs into AUX. Here is an ASCII drawing of that connector, including a pinout and showing how the pins are numbered. The drawing is of the connector at the end of the cable, with the pins pointing toward you. So if you are looking at the back of the machine, at the connector there, this pinout is backwards. My apologies for the wacky numbering; this is the same numbering as in the CoCo-1 technical manual. ------- Pin# Name Connects to / \___/ \ ---- ------- ----------------------------------- / \ / \ 1 CASSMOT SG stem | | 2 GND B stem, LG stem | 1o o3 | | | 3 CASSMOT SG tip o o \ 4 o 5 / 4 CASSIN B tip \ 2 / \ / 5 CASSOUT LG tip ------- B=black SG=small grey LG=large grey The names are given from the perspective of the computer, so "OUT" means output from the computer, input to the cassette, and it should go into the AUX (or MIC) jack while the cassette is recording. -- - Mark 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

13 years, 5 months

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Resurrecting a Bendix G-15

by craig＠solomonson.net

I was going through some boxes of old documents as I prepare to thin out my computer collection and ran across a couple leads that I had 30+ years ago on a couple early vacuum tube era computers--one was a Bendix G-15 and the other was a Royal Precision LGP-30. Thought it would be fun to see if either computer was still there and turns out that the Bendix G-15 is buried in a storage unit yet! I haven't heard back on the LGP-30 yet. When the weather warms up, I will get a chance to help dig out the Bendix and hopefully make a deal on it. Apparently, the Bendix was operational before going into storage in the mid-1970's. So, what are the chances that after sitting for almost 40 years that it would still be operational? I know that vaccum tubes can deteriorate but those are easy to replace. What about the capacitors, resistors, and diodes? I do not know if the storage unit was climate controlled, but if not, I assume corrosion could be a problem with all the contacts. What other issues might one expect with an old system like this? Unfortunately, I am not an electronics expert but always like a challenge. I now regret selling my Bendix Diode tester a few years ago on eBay! Maybe I will have to rent in some day if I make the deal!

13 years, 5 months

3
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Flextra BR-3020 or BR-3225 25/50MB Floppy Drive

by robin＠hx-20.com

On 03/13/2013 01:46 PM, Robin England wrote: > On 03/12/2013 09:29 AM, Robin England wrote: >> Does anyone have a Brier Technology BR-3020 or BR-3225 high >> capacity floppy drive I could borrow please? > >> Wouldn't an Insite I325VM work just as well if reading is your >> object? I suspect that there are far more of them than the Brier >> units. > >> --Chuck > > Thanks Chuck. Do you know for sure that the I325VM can read the > Flextra 25MB discs? > >No, unfortunately, I can't say for certain Two companies, both in San >Jose (wasn't Insite on "Fortran Drive"?) offering similar capacities >using similar techniques at about the same time. > >The 25MB, as I understand it is "unformatted' capacity, so both drives >are fairly close in advertised capacity. Both use zoned recording and >RLL, but beyond that I can only say that the Insite devices are/were >more common and so probably worth a shot. > >IIRC, Insite also trademarked the term "floptical"... > >?Chuck Thanks Chuck. I have procured the I325VM now and will post back when I have empirical knowledge about the compatibility. Cheers Robin

13 years, 5 months

1
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Retroarchive update!

by geneb＠deltasoft.com

The new VT220 font style sheets have been activated for the main site. I've also got the latest backup (2007) of Don Maslin's boot disk and ROM image archive online. EVERYTHING is now available! As time permits, I'll get the other pages moved over to the new style sheet. tnx! g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind. http://www.diy-cockpits.org/coll - Go Collimated or Go Home. Some people collect things for a hobby. Geeks collect hobbies. ScarletDME - The red hot Data Management Environment A Multi-Value database for the masses, not the classes. http://www.scarletdme.org - Get it _today_!

13 years, 5 months

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re Library machines

by COURYHOUSE＠aol.com

our Glendale library had a pdp 11 Ed #

13 years, 5 months

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Library machines

by tom_a_sparks＠yahoo.com.au

----- Original Message ----- > My earliest memories of seeing computers in action were at the library. Old > ADM-3 terminals with light pens to scan in barcodes on the books and on > your library card. Plus the muffled sound of a line printer in back doing > lists of late check-outs. > > This would have been in the 1980's. The library I used to go to still had > those ADM's well into the '90s, then replaced with gray sided, amber > screened WYSE VT-100 lookalikes. But the UI looked the same, so I assume > the backend was the same. > > Anyone know what minis ran library management software back then? I know > the university I went to was all Amdhal with 5250 terminals, but the local > libraries obviously used something smaller. in the early 90's, I remember a gold coast library using a greenscreen and keyboard only terminal so customers could search the library's database i don't remember what the staff where using as I was young back them tom

13 years, 5 months

1
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FS: IBM 5150 with original boxes

by slandon110＠gmail.com

I hate to part with my 5150, But it sits and never gets used at all Its a stock 256k 5150 With a Sysdyne RGB, Amber, Green Monitor Has a 20MB HardCard installed and a Network Card. DOS 2.11 Installed on it, Comes with mTCP installed so you can get online with it Has all original boxes for the system, keyboard and monitor The Machine itself is in mint condition $300 dollars or best offer Thanks Steve

13 years, 5 months

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Magic Smoke: 15uf/20v bypass (tantalum?) capacitor

by elson＠pico-systems.com

> ------------------------------ > > Message: 7 > Date: Sat, 16 Mar 2013 16:08:37 -0400 > From: Paul Birkel <pbirkel at gmail.com> > To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> > Subject: Magic Smoke: 15uf/20v bypass (tantalum?) capacitor > Message-ID: > <CAJj77ru8UqBprno+xXahX09J-ZZbU9DbCH7J3onv6h0HwWPz=w at mail.gmail.com> > Content-Type: text/plain; charset=ISO-8859-1 > > I'm slowly bringing some olde DEC PDP-11 boards back online. In this case > a pair of Unibus Plessey PM-1116 B core memories. Fortunately I have > really nice documentation for them. > > Their inhibit drivers are driven from the -15v rail and individually > bypassed at that point by 15uF 20v +-20% axial capacitors. The > specification is for Sprague 150D156X002082 parts. One board uses these, > or a very close facsimile, *electrolytics*. No smoke on power-up. > > The other board has KEMET axial capacitors that are bullet-shaped and solid > plastic. I've never seen anything like them before. Has anyone else? > Searching through parts sheets @Mouser it looks like this is a > *tantalum *capacitor > (but apparently a discontinued line). One of these smoked mightily on > power-up, splitting across the middle. (Fortunately this seems like a > non-fatal failure as regards the remainder of the circuitry.) > > I'm unsure whether there's any good reason to replace it with a small > electrolytic as used on the first board (and, perhaps, all of the others > like it on the board), or whether I should replace *just* it with another > KEMET capacitor instead? > > Since no other KEMET capacitors failed (there are 17 others) I'm thinking > that I should replace *just *it, and with a comparable modern KEMET > tantalum capacitor; *e.g*., the T110B156M020AT > > > Tantalum caps are notorious for failing catastrophically on equipment that is left unused for a couple years. If the power supply has lots of current capacity, then you get the symptom you experienced. I'd change to aluminum electrolytics, then you don't have to worry about a repeat performance in a decade. If you let the board sit for a few years and then power it on, you will likely have another failure. Jon

13 years, 5 months

3
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Photos from Trenton Computer Festival, March 16th

by billdeg＠degnanco.com

Photos from the MARCH club exhibit at the Trenton Computer Festival, March 16th. http://vintagecomputer.net/browse_thread.cfm?id=509 Includes: an original Mark 8 Altair 8800 Altair 680 IMSAI 8080 Heathkit H8 KIM-1 PDP 8e Educomputer and more

13 years, 5 months

2
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Looking for: Amiga 1000 keyboard/mouse

by derschjo＠gmail.com

Scored afree Amiga 1000 today sans monitor, keyboard and mouse. Happily, it's equipped with an apparently very rare "Rejuvenator" expansion (http://amiga.resource.cx/exp/rejuvenator), which looks pretty cool, if it still works (it has some minor battery corrosion that I've cleaned up...) so I'm excited to play around with this system :). I have a compatible RGB monitor, but no keyboard or mouse. Anyone have a set going spare? Thanks as always, Josh

13 years, 5 months

1
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Dual 486 computer?

by mokuba＠gmail.com

Anyone have such a beast? I've got a friend looking for one. -- Gary G. Sparkes Jr. KB3HAG

13 years, 5 months

5
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SimH, PDP8 OS/8 and RKLFMT hang

by rickb＠bensene.com

I'm running SimH V3.9 on a PC under Windows 7 using the binaries from the primary SimH website. I'm running the OS8 distribution on floppy that is packaged on the Simh site. I attached an 'empty' RK disk drive file as RK0, and tried to run RKLFMT on it to "format" the drive. The RKLFMT program asks its questions (which drives to format), then says "ARE YOU SURE?" and expects a Y or N. If N is typed, the questions about which drives to format are repeated. If Y is typed, the formatting process begins. On real PDP8/e hardware, it all does what it is supposed to...the drive does a bunch of writes, then goes back and reads the sectors to verify that they were written correctly, then prints out a message indicating that the format passes are complete, and then starts over with the "which disks to format" question, at which point you can type ^C to exit. However, in SimH, the program starts up and asks which drives to format, and I say "Y" to drive 0, and "N" to the other 7 drives, then the "ARE YOU SURE?" prompt comes up, and I type "Y", and the Y echoes back, and then it just sits there. On real hardware, it takes about 80 seconds to format a drive. I waited MUCH longer than this to see if the simulated RKLFMT would eventually come back indicating that it had completed. It didn't. I used ^E to interrupt the execution, and stepped through a few instructions, and it appears to be hung in a loop waiting for the disk drive to do something. I checked to see if the disk file holding the emulated RK05 drive had changed in size, and it was still at 0 bytes. The RKLFMT program uses the RK8E disk controller's "WRITE ALL" and "READ ALL" functions to format and verify the drive. These RK8E commands ignore header information on the sectors, and just writes/reads the data, as opposed to the normal READ and WRITE commands that pay attention to the sector header information. I am wondering if perhaps the SimH emulation of the RK8E is flawed in some way such that the READ ALL and WRITE ALL commands don't work properly, causing RKLFMT to fail. I can get the emulated RK05 to work by simply issuing a "ZERO RKA0:" command to OS8, which writes the directory information on the disk, making it accessible to OS8. Has anyone run into this before? It isn't a big deal in terms of usability of emulated RK05s in the PDP 8 SimH implementation, but I'm wondering if it might be a technical detail in the emulation of the RK8E that isn't quite correct. I'd be interesting in hearing anything that folks may have run into or heard about this. Thanks, Rick Bensene

13 years, 5 months

2
2
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Computer Art posters

by tom_a_sparks＠yahoo.com.au

----- Original Message ----- > On 3/15/2013 10:38 PM, Tom Sparks wrote: >> I am looking for computer Art posters for my room >> the art style I am look for date around 1970 to 1985 >> >> Artist: Melvin Prueitt, David Em >> Movies: Tron >> Companies: Triple-I (Information International Inc.), Mathematical > Applications Group, Inc. >> Constructive solid geometry, ray tracing > Check with David Freeman @ www.thecomputermuseum.net. that website is dead :( >? His original computer > store / company / reseller (before all this "channel" crap was really > invented) had dealings I think with Em back in the day and may have leads on > where he is or where you can get something like you want.? I don't know > about Melvin Prueitt, and I think they dealt with Em before Tron was out.? But I > would ask him. while browsing around I found www.dam.org (Digital Art Museum) they may be able to help me > > thanks > Jim > > kool tom

13 years, 5 months

1
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PCI PROTOTYPE CARD ( search for ... )

by gerardcjat＠free.fr

Does someone knows a PCI PROTOTYPE CARD possibly based on the AMCC S5920 chip ?? Or does someone ever build something comparable ? ( I know about the "dragon" board, but doesn't like it is Fpga based ;-) )

13 years, 5 months

2
2
0 0

Magic Smoke: 15uf/20v bypass (tantalum?) capacitor

by pbirkel＠gmail.com

I'm slowly bringing some olde DEC PDP-11 boards back online. In this case a pair of Unibus Plessey PM-1116 B core memories. Fortunately I have really nice documentation for them. Their inhibit drivers are driven from the -15v rail and individually bypassed at that point by 15uF 20v +-20% axial capacitors. The specification is for Sprague 150D156X002082 parts. One board uses these, or a very close facsimile, *electrolytics*. No smoke on power-up. The other board has KEMET axial capacitors that are bullet-shaped and solid plastic. I've never seen anything like them before. Has anyone else? Searching through parts sheets @Mouser it looks like this is a *tantalum *capacitor (but apparently a discontinued line). One of these smoked mightily on power-up, splitting across the middle. (Fortunately this seems like a non-fatal failure as regards the remainder of the circuitry.) I'm unsure whether there's any good reason to replace it with a small electrolytic as used on the first board (and, perhaps, all of the others like it on the board), or whether I should replace *just* it with another KEMET capacitor instead? Since no other KEMET capacitors failed (there are 17 others) I'm thinking that I should replace *just *it, and with a comparable modern KEMET tantalum capacitor; *e.g*., the T110B156M020AT Does anyone have any experience with this part, repairing boards where this part has failed, or other words-of-wisdom to offer? Thanks, paul

13 years, 5 months

2
1
0 0

Care and Feeding of Vacuum Tubes (Valves)

by healyzh＠aracnet.com

Do any special precautions need to be taken with storing vacuum tubes? Are these something that can simply be tossed in the attic and forgotten about until needed? I recently got a fair number, and expect to get more at some point in the future. A lot of the ones I got are simply dumped in an old metal tool box. Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh at aracnet.com | OpenVMS Enthusiast | | | Photographer | +----------------------------------+----------------------------+ | My flickr Photostream | | http://www.flickr.com/photos/33848088 at N03/ | | My Photography Website | | http://www.zanesphotography.com |

13 years, 5 months

18
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Help with RK8e-RK05J diagnostics on PDP-8m

by steve＠tronola.com

At 04:05 AM 3/15/2013, David Gesswein wrote: >G version here >http://www.pdp8online.com/pdp8cgi/os8_html?act=dir;fn=images/os8/ras.rk05;s… >Click more to convert to various formats for download. --- Thanks, David. I had not realized the power of the "more" option beside each OS/8 file in the catalog on your great website. It worked beautifully, translating the SV format to the Bin-loader format for me. Was able to load and run that diagnostic and apply the results to the correct version documentation. I'm now trying to interpret the results... All the best, Steve L.

13 years, 5 months

2
1
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DEC PDP-11-era UART

by pbirkel＠gmail.com

The early PDP-11 uses a ?DEC 1801 UART? in multiple modules. I?ve had no luck identifying a comparable chip that could be substituted when doing repairs as there?s a remarkable dearth of information regarding the characteristics of this part, excepting the pin-out as seen in engineering drawings. (No, I haven?t yet tried pin-out matching ... next step.) Ideally the part would be both HW and SW compatible, but clearly SW compatibility is key! Does anyone have any experience with this part, repairing boards where this part has failed, or other words-of-wisdom to offer? Thanks, paul

13 years, 5 months

4
4
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Help with RK8e-RK05J diagnostics on PDP-8m

by steve＠tronola.com

Hi folks, Does anyone have the matching documentation (doc) file for a version of RK8e Drive Control Test Diagnostics? I'm trying to debug an RK8e-RK05J setup. The best set of doc and code that I have found is: - maindec-08-dhrkb-e-pb.bin - the E-version code - maindec-08-dhrkb-g-pb.pdf - the G-version doc - A table of certain E to G version addresses but many appear to be wrong --- Note that the dhrkb part identifies the program and the dash-letter, the version. I also have the code for dhrkb versions B and C but not the doc. The problem is that to make sense of a detected error, you have to relate a PC location reference printed by the diagnostic to the program listing provided in the doc. Finding the G-version code or the doc for versions B, C or E, would solve the immediate problem. The original doc files might have been named in the format: maindec-08-dhrkb-e.d, for example. The specific error which I am seeing with dhrkb-E is that it halts at location 5340, with AC=0 after printing: Status Register Error PC=0552 GD=6000 CM=3000 DA=0040 ...where PC is the location where the error occurred, GD the expected value, CM the command register value and DA the disk address register. The issue I am finding with the table is that the location 0552 doesn't appear there and all the locations in the range of 400-1000 appear to fall in basic user interface routines in the G-version listing. Thus they don't appear to be valid diagnostic tests. The table was found here: http://dustyoldcomputers.com/pdp-common/reference/papertapes/maindec/mainde… Any assistance would be appreciated. Thanks, Steve L. http://www.tronola.com/ At 05:46 AM 3/14/2013, you wrote: >Send cctech mailing list submissions to > cctech at classiccmp.org > >To subscribe or unsubscribe via the World Wide Web, visit > http://www.classiccmp.org/mailman/listinfo/cctech >or, via email, send a message with subject or body 'help' to > cctech-request at classiccmp.org > >You can reach the person managing the list at > cctech-owner at classiccmp.org > >When replying, please edit your Subject line so it is more specific >than "Re: Contents of cctech digest..." > > >Today's Topics: > > 1. Re: Fun Power Supply repair tip (David Riley) > 2. Re: Fun Power Supply repair tip (Brent Hilpert) > 3. Re: Fun Power Supply repair tip (Jim Stephens) > 4. An amazing looking Sun 3/280 (mc68010) > 5. more books FFS (David Griffith) > 6. 5151 hunt... (geneb) > 7. Re: Xerox 820-II & external FDC (Dave Land) > 8. Re: An amazing looking Sun 3/280 (Jim Stephens) > 9. Re: An amazing looking Sun 3/280 (mc68010) > 10. Re: An amazing looking Sun 3/280 (Brent Hilpert) > 11. Re: HP 9830 computer and HP 9860 mark-sense card reader > (Brent Hilpert) > 12. Re: An amazing looking Sun 3/280 (Glen Slick) > 13. Re: VT102 (John Wilson) > 14. Re: An amazing looking Sun 3/280 (mc68010) > 15. Re: An amazing looking Sun 3/280 (mc68010) > 16. Education & vintage/classic computing (Murray McCullough) > 17. Vacuum tube and semiconductor cross ref and current > replacements (Cindy Croxton Electronics Plus) > 18. All about CRT tubes, and HP semiconductor PN cross ref > (Cindy Croxton Electronics Plus) > 19. Re: Care and Feeding of Vacuum Tubes (Valves) (Christian Kennedy) > 20. Re: Care and Feeding of Vacuum Tubes (Valves) (William Donzelli) > 21. Re: Care and Feeding of Vacuum Tubes (Valves) (Jim Stephens) > 22. Re: Care and Feeding of Vacuum Tubes (Valves) (Dave McGuire) > 23. Re: VT102 (Mouse) > 24. Re: Education & vintage/classic computing (Brent Hilpert) > 25. Re: Education & vintage/classic computing (Dave Caroline) > 26. Re: Care and Feeding of Vacuum Tubes (Valves) (Chuck Guzis) > 27. Re: Care and Feeding of Vacuum Tubes (Valves) (David Riley) > 28. Re: More fun stuff-bring out the vacuum tubes! (David Riley) > > >---------------------------------------------------------------------- > >Message: 1 >Date: Wed, 13 Mar 2013 19:46:03 -0400 >From: David Riley <fraveydank at gmail.com> >To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> >Subject: Re: Fun Power Supply repair tip >Message-ID: <48A05E00-8483-447F-A775-D8AE03032570 at gmail.com> >Content-Type: text/plain; charset=iso-8859-1 > >On Mar 13, 2013, at 7:01 PM, Josh Dersch <derschjo at gmail.com> wrote: > >> Well, turns out that someone (me!) had installed the wrong fuse -- it was a >> 2.5A fuse where a 10A was required (F2 takes the 2.5A, btw). Apparently >> when fuses start to give out they draw a lot of current -- lesson learned >> :). > >Good thing to look out for! If I were to nitpick, though, I'd probably >point out that it's not that the fuse is starting to draw a lot of >current, but rather that it's starting to drop a lot of voltage as the >I in the IV term of Ohm's law goes way above its intended range. The >glowing is a tangential result (P = I^2*R). > > >- Dave > > > >------------------------------ > >Message: 2 >Date: Wed, 13 Mar 2013 17:03:29 -0700 >From: Brent Hilpert <hilpert at cs.ubc.ca> >To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> >Subject: Re: Fun Power Supply repair tip >Message-ID: <C907175E-7391-4814-BDC0-F440A4F1ADF0 at cs.ubc.ca> >Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed > >On 2013 Mar 13, at 4:01 PM, Josh Dersch wrote: > >> Hey all -- >> >> This'll probably rank as a "duh" moment for most of you but I >> thought I'd >> share (mostly because it amused me): >> >> I was trying to figure out why the unregulated 8VDC line of my >> SWTPC 6800's >> power supply kept dipping so suddenly under moderate load (and why >> it would >> keep falling and falling as long as I left it running that way...) >> >> The overall behavior was: >> >> - Power up with minimal load (just the motherboard w/it's onboard >> regulator): 8V line was fine at about 8.7V. >> - Add up to two RAM cards and the 8V was still at around 8.3 or so. >> - Add a third card and 8V drops to 6.5V and continues to drop >> steadily over >> time. >> >> This had me scratching my head. Then I happened to notice that the >> fuse >> (F1 on the 12V supply board) was glowing a dull orange and getting >> brighter. >> >> Well, turns out that someone (me!) had installed the wrong fuse -- >> it was a >> 2.5A fuse where a 10A was required (F2 takes the 2.5A, btw). >> Apparently >> when fuses start to give out they draw a lot of current -- lesson >> learned >> :). >> >> Fuse replaced and all is happy. So, the lesson is: check your fuses >> carefully. > >Interesting fault mode, but I wouldn't express that as the fuse >"drawing a lot of current". That fuse should be the one in the +8V >line and it looks like what was happening is your cards were drawing >current just short of blowing the fuse. As the fuse filament heated >up it's resistance increased, so more of the +8 supply voltage was >dropping across the fuse, reducing the +8V output level. (Overall >current should actually be going down). > >Yay, another SWTPC 6800 (I have one too). > > > >------------------------------ > >Message: 3 >Date: Wed, 13 Mar 2013 17:07:32 -0700 >From: Jim Stephens <jws at jwsss.com> >To: cctalk at classiccmp.org >Subject: Re: Fun Power Supply repair tip >Message-ID: <514114C4.8030905 at jwsss.com> >Content-Type: text/plain; charset=ISO-8859-1; format=flowed > >On 3/13/2013 4:01 PM, Josh Dersch wrote: >> This had me scratching my head. Then I happened to notice that the fuse >> (F1 on the 12V supply board) was glowing a dull orange and getting brighter. >> >> Well, turns out that someone (me!) had installed the wrong fuse -- it was a >> 2.5A fuse where a 10A was required (F2 takes the 2.5A, btw). Apparently >> when fuses start to give out they draw a lot of current -- lesson learned >If you had that behavior, it sounds like you were using a fusetron time >delay fuse. > >The fuses will run at 100% overload indefinitely, handle 10x for a spike >and blow greater than that. > >if you had one of the fuses w/o the slow blow, then it would have run >for a while and then blown as well, but you don't get the more precise >overload time delay on that type of fuse. The fusing element may blow >by overload somewhere in the conductor, or with an overload, the solder >at each end of the fuse envelope may fail and it will blow then. > >It is interesting that you saw a change in current going thru the fuse >though, sort of indicates the fuse wasn't working so well. Also with >that amount of heat into the phenolic fuse holder, you can probably >expect it to be very fragile and fail at some point due to the spring >load in it. I've seen fuse holders which didn't have glowing fuses, but >overloaded ones fail that way. > >Never had one I knew first hand had an incandescent fuse in it though, >that is a bit worrisome. > >jim > > > >------------------------------ > >Message: 4 >Date: Wed, 13 Mar 2013 17:40:56 -0700 >From: mc68010 <mc68010 at gmail.com> >To: General Discussion: On-Topic and Off-Topic Posts > <cctalk at classiccmp.org> >Subject: An amazing looking Sun 3/280 >Message-ID: <51411C98.5060606 at gmail.com> >Content-Type: text/plain; charset=UTF-8; format=flowed > >In all my years of messing with Sun gear I have never seen such a clean >looking and neat 3/280. Even back in the early 90's. It looks like it >was just unboxed. I wouldn't pay $2k for it but, it is beautiful if your >into Sun 3 boxes. It's almost Sun 3 porn. > >http://www.ebay.com/itm/151011714493 > > >------------------------------ > >Message: 5 >Date: Wed, 13 Mar 2013 17:51:35 -0700 (PDT) >From: David Griffith <dgriffi at cs.csubak.edu> >To: cctalk at classiccmp.org >Subject: more books FFS >Message-ID: > <alpine.DEB.2.00.1303131750390.9974 at sleipnir.cs.csubak.edu> >Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII > > >I have two more books free for shipping. The Fortran 77 one is gone. >Here's what I have: > >*Motorola CMOS/NMOS Special Functions Data (1986) >*Turbo C Reference Guide (1987) from Borland >*UNIX Primer Plus by Waite Group Staff (1983, Softcover) >*Introduction to WordStar by Arthur Naiman (1983, Paperback) >*WordStar with Style by Roger White (1983, Paperback) >*The Illustrated CP/M WordStar Dictionary with MailMerge and SpellStar >*Word Processing on the Kaypro by Peter A. McWilliams (1983, Paperback) > >Take one or many. > >-- >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? > > >------------------------------ > >Message: 6 >Date: Wed, 13 Mar 2013 18:09:24 -0700 (PDT) >From: geneb <geneb at deltasoft.com> >To: cctalk at classiccmp.org >Subject: 5151 hunt... >Message-ID: <alpine.LFD.2.03.1303131808550.10781 at deltasoft.com> >Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII > >Found one thanks to a listmember. > >Still chasing a 5150 compatible keyboard. > >tnx. > >-gene > > >-- >Proud owner of F-15C 80-0007 >http://www.f15sim.com - The only one of its kind. >http://www.diy-cockpits.org/coll - Go Collimated or Go Home. >Some people collect things for a hobby. Geeks collect hobbies. > >ScarletDME - The red hot Data Management Environment >A Multi-Value database for the masses, not the classes. >http://www.scarletdme.org - Get it _today_! > > >------------------------------ > >Message: 7 >Date: Wed, 13 Mar 2013 19:29:02 -0600 >From: Dave Land <xmechanic at landcomp.net> >To: cctalk at classiccmp.org >Subject: Re: Xerox 820-II & external FDC >Message-ID: <514127DE.9070407 at landcomp.net> >Content-Type: text/plain; charset=ISO-8859-1; format=flowed > >On 3/13/13 5:59 AM, Steven Hirsch wrote: >> On Tue, 12 Mar 2013, mc68010 wrote: >> >>> On 3/12/2013 5:43 PM, Steven Hirsch wrote: >>>> On Tue, 12 Mar 2013, mc68010 wrote: >>>> >>>>> On 3/11/2013 11:37 AM, Enrico Lazzerini wrote: >>>>>> Hi, I received a Xerox 820-II mainboard. I've found that does not >>>>>> have a FDC >>>>>> on board and that the 37-pin connector used to connect the floppy >>>>>> disk it >>>>>> seems to have a bus and its own protocol to talk to an external FDC >>>>>> board >>>>>> outside. Is there anybody who knows more and is it there a way to >>>>>> try to >>>>>> connect and operate the drive with this mainboard? >>>>>> >>>> >>>>> Having cleaned the heads, about every other disk going through a box >>>>> of 8" 820 disk, sthere is nothing in the drive other than the drives >>>>> and a power supply. I am not sure if the 820-II is different but, I >>>>> doubt it. The cable just splits off to each drive. Everything is on >>>>> the mainboard. >>>> >>>> My 82O-II does indeed have its floppy controller on a daughterboard. >>>> I suspect this is a different arrangement from the original 820 aka >>>> Ferguson Bigboard. >> >>> I am sure you are right but, I don't see anything but a power supply >>> with the floppy drives in this video. Looks identical to the non II >>> floppy units I had. http://www.youtube.com/watch?v=B9OwwolhLuE >> >> I think we're talking about different cases. The disk controller is >> clearly visible in the closeup of the computer itself. It may have been >> a different PCB in the floppy vs. hard-disk system. >> >> On a related subject, I would love to get my hands on an 820-II with >> hard drive. Had two lined up at different points but both sellers >> flaked out and stopped answering e-mail. Wonder if there's some sort of >> distortion field projected from these units? >> >> If anybody has one they'd like to part with, I can do cash or trade. >> >> Steve >> >> > >Don't guess I'll be getting rid of mine for a while, after all the crap >I went through to get some software on to it, LOL! Besides, I don't know >how well the hard drive would stand up to any kind of shipping stress by >the usual gorillas from USPS, Fedex, etc. > >-- >Dave Land >Land Computer Service > >Check out my site at http://www.landcomp.net > > >------------------------------ > >Message: 8 >Date: Wed, 13 Mar 2013 21:52:26 -0700 >From: Jim Stephens <jws at jwsss.com> >To: General Discussion: On-Topic and Off-Topic Posts > <cctalk at classiccmp.org> >Subject: Re: An amazing looking Sun 3/280 >Message-ID: <5141578A.2070907 at jwsss.com> >Content-Type: text/plain; charset=UTF-8; format=flowed > > >On 3/13/2013 5:40 PM, mc68010 wrote: >> In all my years of messing with Sun gear I have never seen such a >> clean looking and neat 3/280. Even back in the early 90's. It looks >> like it was just unboxed. I wouldn't pay $2k for it but, it is >> beautiful if your into Sun 3 boxes. It's almost Sun 3 porn. >> >> http://www.ebay.com/itm/151011714493 >> >> >I had two 4/280's like that, wish I could have held on to them. Also was >at an auction with 8 systems in a complex from a database development >company. Gorgeous hardware for them, crap execution on the s/w. > >I fired up the systems and ran backups for the auctioneer and myself of >their development systems. > >was pretty cool. > >jim > > >------------------------------ > >Message: 9 >Date: Wed, 13 Mar 2013 22:36:17 -0700 >From: mc68010 <mc68010 at gmail.com> >To: General Discussion: On-Topic and Off-Topic Posts > <cctalk at classiccmp.org> >Subject: Re: An amazing looking Sun 3/280 >Message-ID: <514161D1.6060700 at gmail.com> >Content-Type: text/plain; charset=ISO-8859-1; format=flowed > >On 3/13/2013 8:34 PM, Glen Slick wrote: >> I don't have those panels to close up the rear of the rack. I've only >> powered up mine a few times since I picked it up a couple of years >> ago. I should really find a new home for it in the Seattle area. -Glen > >I have never even seen those rear panels before. I have seen so many 3/4 >280 systems over the years but, they have always been uncovered in the >back. That's the cleanest 3/280 ever. I wonder if it was actually used. >First thing I would probably have done back then is take off the rear >panels and toss them. What a pain to have to unscrew all that to get at >anything. Anyone know about the keylock on the front ? I've never seen a >keylock there before. Nothing really worth getting at on that side of a >x/280 case. If it only held the front panel on it would only protect the >backplane and tape drive. > > > > >------------------------------ > >Message: 10 >Date: Wed, 13 Mar 2013 22:56:46 -0700 >From: Brent Hilpert <hilpert at cs.ubc.ca> >To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> >Subject: Re: An amazing looking Sun 3/280 >Message-ID: <61715879-FC8E-4D41-87D9-981228252E49 at cs.ubc.ca> >Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed > >On 2013 Mar 13, at 9:52 PM, Jim Stephens wrote: >> On 3/13/2013 5:40 PM, mc68010 wrote: >>> In all my years of messing with Sun gear I have never seen such a >>> clean looking and neat 3/280. Even back in the early 90's. It >>> looks like it was just unboxed. I wouldn't pay $2k for it but, it >>> is beautiful if your into Sun 3 boxes. It's almost Sun 3 porn. >>> >>> http://www.ebay.com/itm/151011714493 >>> >>> >> I had two 4/280's like that, wish I could have held on to them. >> Also was at an auction with 8 systems in a complex from a database >> development company. Gorgeous hardware for them, crap execution on >> the s/w. > >Ran across a nice racked Sun 2 system with open-reel 9-track in a >storage closet at a local U just a couple years ago (pretty sure it >was a 2). I don't know now what has happened to it. > > > >------------------------------ > >Message: 11 >Date: Wed, 13 Mar 2013 23:09:38 -0700 >From: Brent Hilpert <hilpert at cs.ubc.ca> >To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> >Subject: Re: HP 9830 computer and HP 9860 mark-sense card reader >Message-ID: <1988FAD9-F175-4F9A-A6FE-996B6187D8D7 at cs.ubc.ca> >Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed > >On 2013 Mar 13, at 9:25 PM, Ethan Dicks wrote: >> On Wed, Mar 13, 2013 at 9:38 PM, Brent Hilpert <hilpert at cs.ubc.ca> >> wrote: >>> As Rob pointed out, the 9830 one must be special order to HP >>> though, to >>> obtain the lazy-T cursor, unless there's some alternative tortured >>> way >>> they're injecting the T into the display scanning that I'm not >>> seeing. >> >> Thank you for mentioning this. I've asked on the list now and >> again about >> a computer I used c. 1976 that had a "lazy-T cursor". I was quite >> young >> at the time and it was only brought to our school for a special >> occasion, >> so my memories are quite fuzzy about it, but having now googled with >> some useful keywords, I'm reasonably certain that the device I was >> trying >> to describe was an HP 9830 with an HP 9860 mark-sense card reader. >> >> It seems unlikely I'll ever end up with one, so I'm happy to have >> found >> this emulator, updated less than a year ago... >> >> http://sourceforge.net/projects/hp9800e/files/go9800/ >> >> Thanks again for the very helpful nudge in precisely the correct >> direction! > >Well that's very prescient, you're answering a question I was just >about to ask. > >Rob and I have been discussing 9830s lately (and thanks to Rob I have >one to work on here) and we realised, somewhat to our surprise, that >we had both encountered the 9830 in school in the mid-70's, in >geographically very-separated regions - Rob in the Montreal area and >me in the Vancouver area. > >Both instances had the mark-sense card reader too. Everybody sat at >their desk in class and pencil-marked off their first program (10 >PRINT "<MY NAME>"..), lined up at the computer and submitted their >card deck for batch-style processing. Keeners could use the machine >after hours and type and edit directly on the keyboard and LED >display (whoo-hoo!). > >So just how widespread or prevalent were 9830s in schools - did >anyone else here encounter the 9830 in highschool (or gradeschool)? > > > >------------------------------ > >Message: 12 >Date: Wed, 13 Mar 2013 23:12:44 -0700 >From: Glen Slick <glen.slick at gmail.com> >To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> >Subject: Re: An amazing looking Sun 3/280 >Message-ID: > <CAM2UOw+g7mRf+Yn_4pYantYep0rgdt-N_6bGQ58-XxXa=qoJpg at mail.gmail.com> >Content-Type: text/plain; charset=ISO-8859-1 > >On Mar 13, 2013 11:06 PM, "mc68010" <mc68010 at gmail.com> wrote: >> Anyone know about the keylock on the front ? I've never seen a keylock >there before. Nothing really worth getting at on that side of a x/280 case. >If it only held the front panel on it would only protect the backplane and >tape drive. > >On the 4/280 rack I have I'm pretty sure that is a front panel key switch >which is wired to the power controller. > >-Glen > > >------------------------------ > >Message: 13 >Date: Thu, 14 Mar 2013 02:32:41 -0400 >From: John Wilson <wilson at dbit.com> >To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> >Subject: Re: VT102 >Message-ID: <20130314063241.GA1823 at dbit.dbit.com> >Content-Type: text/plain; charset=us-ascii > >On Wed, Mar 13, 2013 at 11:18:26AM -0400, Mouse wrote: >>I'm particularly curious because I have a terminal emulator which, >>among other things, can be told to emulate something moderately close >>to a VT100. I'd like to get its wrapping behaviour right; this >>complicates the question because now I have to decide what I think >>"right" is. :-) > >I know the feeling! > >>A quick look at my code indicates that I don't quite do any of those. >>The only thing I see explicitly clearing the "wrap now" flag is tab, > >Bad news: unless I'm missing something, tab doesn't clear the wrap flag on >the VT100 or 101, and on the 102 it clears it only if the cursor moves (but >not if it was already at the right margin). > >If you want any cases tested on a real 100, 101, or 102, let me know! >It'll be easy until I get sick of having them in a row on my living room >floor. > >John Wilson >D Bit > > >------------------------------ > >Message: 14 >Date: Thu, 14 Mar 2013 00:11:24 -0700 >From: mc68010 <mc68010 at gmail.com> >To: General Discussion: On-Topic and Off-Topic Posts > <cctalk at classiccmp.org> >Subject: Re: An amazing looking Sun 3/280 >Message-ID: <5141781C.7020400 at gmail.com> >Content-Type: text/plain; charset=ISO-8859-1; format=flowed > >On 3/13/2013 11:12 PM, Glen Slick wrote: >> On Mar 13, 2013 11:06 PM, "mc68010" <mc68010 at gmail.com> wrote: >>> Anyone know about the keylock on the front ? I've never seen a keylock >> there before. Nothing really worth getting at on that side of a x/280 case. >> If it only held the front panel on it would only protect the backplane and >> tape drive. >> >> On the 4/280 rack I have I'm pretty sure that is a front panel key switch >> which is wired to the power controller. >> >> -Glen > >Hmm fuzzy memories coming back. Maybe I do remember them. It just went >to some header on the power distribution deal right ? > > >------------------------------ > >Message: 15 >Date: Thu, 14 Mar 2013 00:26:32 -0700 >From: mc68010 <mc68010 at gmail.com> >To: General Discussion: On-Topic and Off-Topic Posts > <cctalk at classiccmp.org> >Subject: Re: An amazing looking Sun 3/280 >Message-ID: <51417BA8.2080604 at gmail.com> >Content-Type: text/plain; charset=UTF-8; format=flowed > >On 3/13/2013 9:52 PM, Jim Stephens wrote: >> I had two 4/280's like that, wish I could have held on to them. Also >> was at an auction with 8 systems in a complex from a database >> development company. Gorgeous hardware for them, crap execution on >> the s/w. >> >> I fired up the systems and ran backups for the auctioneer and myself >> of their development systems. >> >> was pretty cool. >> >> jim > >I have had a few x/280 systems over the years but, nothing so original >as this one. They are hard to find places to keep. I got rid of all of >mine too. Back in the 90's people would beg you to take them away. The >racks they wanted to keep. I once built a stack out of 12 slot cases >3x2 on the bottom and 3 units tall. 18 in all. There was once a picture >of me standing on top that has been lost to the ages. > > >------------------------------ > >Message: 16 >Date: Wed, 13 Mar 2013 12:32:01 -0400 >From: Murray McCullough <c.murray.mccullough at gmail.com> >To: cctalk at classiccmp.org >Subject: Education & vintage/classic computing >Message-ID: > <CAMvyYF_iFy8yYZExV26hhmFeD5VJzqbZFevuqTwsVaj0QFvP7Q at mail.gmail.com> >Content-Type: text/plain; charset=ISO-8859-1 > >I have a question that concerns vintage/classic computing intersecting >the education world: Can anyone tell me what was the first >microcomputer used in an education setting for teaching purposes? > >Thanks. > >Murray :) > > >------------------------------ > >Message: 17 >Date: Wed, 13 Mar 2013 16:01:01 -0500 >From: "Cindy Croxton Electronics Plus" <sales at elecplus.com> >To: "'General Discussion: On-Topic and Off-Topic Posts'" > <cctalk at classiccmp.org> >Subject: Vacuum tube and semiconductor cross ref and current > replacements >Message-ID: <010701ce202d$de0dda30$9a298e90$@com> >Content-Type: text/plain; charset="us-ascii" > >http://www.worldtubecompany.com/mm5/merchant.mvc?Screen=TSL > > > > _____ > >No virus found in this message. >Checked by AVG - www.avg.com >Version: 2013.0.2904 / Virus Database: 2641/6166 - Release Date: 03/12/13 > > > >------------------------------ > >Message: 18 >Date: Wed, 13 Mar 2013 16:18:01 -0500 >From: "Cindy Croxton Electronics Plus" <sales at elecplus.com> >To: "'General Discussion: On-Topic and Off-Topic Posts'" > <cctalk at classiccmp.org> >Subject: All about CRT tubes, and HP semiconductor PN cross ref >Message-ID: <010c01ce2030$3e2fc480$ba8f4d80$@com> >Content-Type: text/plain; charset="us-ascii" > >http://www.hparchive.com/Bench_Briefs/HP-Bench-Briefs-1981-03-05.pdf > > > > > >Cindy Croxton > >Electronics Plus > >1613 Water Street > >Kerrville, TX 78028 > >(830)792-3400 phone (830)792-3404 fax > >AOL IM elcpls > > > > _____ > >No virus found in this message. >Checked by AVG - www.avg.com >Version: 2013.0.2904 / Virus Database: 2641/6166 - Release Date: 03/12/13 > > > >------------------------------ > >Message: 19 >Date: Wed, 13 Mar 2013 16:02:10 -0700 >From: Christian Kennedy <chris at mainecoon.com> >To: "Zane H. Healy" <healyzh at aracnet.com> >Cc: classiccmp at classiccmp.org >Subject: Re: Care and Feeding of Vacuum Tubes (Valves) >Message-ID: <F342C3C8-5749-4F3C-809F-EC5B2C63616C at mainecoon.com> >Content-Type: text/plain; charset=us-ascii > > >On 13 Mar 2013, at 4:08 PM, Zane H. Healy wrote: > >> Do any special precautions need to be taken with storing vacuum >> tubes? > >They can get gassy. If the getters aren't nice and shiny the tube is gone; if the are it still makes sense (especially on things that run with significant B+) to bring them up on heater only and let them bake for a while. > >-- >Dr. Christian Kennedy >chris at mainecoon.com AF6AP | DB00000692 | PG00029419 >http://www.mainecoon.com PGP KeyID 108DAB97 >PGP fingerprint: 4E99 10B6 7253 B048 6685 6CBC 55E1 20A3 108D AB97 >"Mr. McKittrick, after careful consideration..." > > > > > > > >------------------------------ > >Message: 20 >Date: Wed, 13 Mar 2013 19:10:22 -0400 >From: William Donzelli <wdonzelli at gmail.com> >To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> >Subject: Re: Care and Feeding of Vacuum Tubes (Valves) >Message-ID: > <CANij+ddF+4GfaO9OE7NAOSMPdK+5V5Y+j31+3QjZWdLz_OpHkg at mail.gmail.com> >Content-Type: text/plain; charset=ISO-8859-1 > >> Do any special precautions need to be taken with storing vacuum tubes? Are >> these something that can simply be tossed in the attic and forgotten about >> until needed? I recently got a fair number, and expect to get more at some >> point in the future. > >Temperature extremes are really not a problem, simply because they are >made for such extremes during normal operation. Moisture can be a >problem in extreme cases, but normally not much of an issue either - >mostly the boxes suffer (and metal tubes, I suppose). The only thing >that really is bad for tubes is salt spray. Don't store your tubes in >a seaside shack. > >-- >Will > > >------------------------------ > >Message: 21 >Date: Wed, 13 Mar 2013 16:22:23 -0700 >From: Jim Stephens <jws at jwsss.com> >To: General Discussion: On-Topic and Off-Topic Posts > <cctalk at classiccmp.org> >Subject: Re: Care and Feeding of Vacuum Tubes (Valves) >Message-ID: <51410A2F.7060205 at jwsss.com> >Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > >On 3/13/2013 4:08 PM, Zane H. Healy wrote: >> Do any special precautions need to be taken with storing vacuum >> tubes? Are these something that can simply be tossed in the attic and >> forgotten about until needed? I recently got a fair number, and >> expect to get more at some point in the future. >> >> A lot of the ones I got are simply dumped in an old metal tool box. >> >> Zane >> >> >> >A lot of them have traces of cesium or other odd agents that were used >to absorb the last bits of O2 after the vacuum was applied. > >they otherwise are glass, copper, steel, and micah, and other odd >materials which should not age much. I'd be careful of storing them to >rattle around for fear of damage. > >Also though you can peer thru the glass at the insides some of them can >be hard to figure out the number of in 40 or 60 years of storage, so >make sure that you keep them such that their legends don't get rubbed >off in storage. Some of them will have the numbers applied to the glass >via some process that really is indelible short of breaking the glass, >and I've seen some with some sort of white ink that didn't last the >lifetime of the tube (was messed up when I took it out in the 60's) >Luckily in some cases you can read the chassis to determine the numbers. > >Do you have a tester stored with the tubes? Do you have them sorted by >NOS vs. pulls? that is about the only other thing to think about. and >the other bits, capacitors and other parts won't age as well as the >tubes if you have bought and stored them. > >Jim > > >------------------------------ > >Message: 22 >Date: Wed, 13 Mar 2013 19:30:04 -0400 >From: Dave McGuire <mcguire at neurotica.com> >To: General Discussion: On-Topic and Off-Topic Posts > <cctalk at classiccmp.org> >Subject: Re: Care and Feeding of Vacuum Tubes (Valves) >Message-ID: <51410BFC.2090604 at neurotica.com> >Content-Type: text/plain; charset=ISO-8859-1 > >On 03/13/2013 07:08 PM, Zane H. Healy wrote: >> Do any special precautions need to be taken with storing vacuum tubes? >> Are these something that can simply be tossed in the attic and forgotten >> about until needed? I recently got a fair number, and expect to get >> more at some point in the future. >> >> A lot of the ones I got are simply dumped in an old metal tool box. > > Just don't break them (and they're tougher than they look) and they'll >be fine. I have tubes that I've stored pretty much like that, from >attic to basement to storage locker...since I was a kid, some of them I >took out of junked TVs 35 years ago, and I use them for repairs today. > > -Dave > >-- >Dave McGuire, AK4HZ >New Kensington, PA > > >------------------------------ > >Message: 23 >Date: Thu, 14 Mar 2013 03:51:54 -0400 (EDT) >From: Mouse <mouse at Rodents-Montreal.ORG> >To: cctalk at classiccmp.org >Subject: Re: VT102 >Message-ID: <201303140751.DAA27636 at Sparkle.Rodents-Montreal.ORG> >Content-Type: text/plain; charset="iso-8859-1" > >>> A quick look at my code indicates that I don't quite do any of >>> those. The only thing I see explicitly clearing the "wrap now" flag >>> is tab, [...] >> Bad news: unless I'm missing something, tab doesn't clear the wrap >> flag on the VT100 or 101, and on the 102 it clears it only if the >> cursor moves (but not if it was already at the right margin). > >Yes, I noticed your description implied that. > >But I'm clearly misreading my code. It looks to me as though my >wrapping flag causes a wrap even if the cursor is no longer at the >right margin at the time the second printable character arrives, but >testing indicates that's not actually how it works; the behaviour I'm >seeing appears to be more like your description of the VT102 than >anything else. > >I clearly need to look at that code more closely. > >> If you want any cases tested on a real 100, 101, or 102, let me know! >> It'll be easy until I get sick of having them in a row on my living >> room floor. > >Heh. I know the syndrome. :/ > >/~\ The ASCII Mouse >\ / Ribbon Campaign > X Against HTML mouse at rodents-montreal.org >/ \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B > > >------------------------------ > >Message: 24 >Date: Thu, 14 Mar 2013 00:56:04 -0700 >From: Brent Hilpert <hilpert at cs.ubc.ca> >To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> >Subject: Re: Education & vintage/classic computing >Message-ID: <52D54486-2AA5-4F97-B06D-24F6FA9618D5 at cs.ubc.ca> >Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed > >On 2013 Mar 13, at 9:32 AM, Murray McCullough wrote: > >> I have a question that concerns vintage/classic computing intersecting >> the education world: Can anyone tell me what was the first >> microcomputer used in an education setting for teaching purposes? > > >The HP 9830 just being discussed might be one for your consideration, >depending on how you want to classify a microcomputer. It's a >desktop, 'personal' computer with built-in BASIC but the CPU is >implemented in TTL, not a single-chip microprocessor. Introduced >1972, encountered by personal experience in computer/programming >course high school 1976. > > > > >------------------------------ > >Message: 25 >Date: Thu, 14 Mar 2013 08:00:45 +0000 >From: Dave Caroline <dave.thearchivist at gmail.com> >To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> >Subject: Re: Education & vintage/classic computing >Message-ID: > <CALfYgtmjLrZ_3_0qKO1cxHAcxjnaVuKPQqQWhctrLsU7dpYG6A at mail.gmail.com> >Content-Type: text/plain; charset=ISO-8859-1 > >On Wed, Mar 13, 2013 at 4:32 PM, Murray McCullough ><c.murray.mccullough at gmail.com> wrote: >> I have a question that concerns vintage/classic computing intersecting >> the education world: Can anyone tell me what was the first >> microcomputer used in an education setting for teaching purposes? > >Define micro... >In the early days the (mid 1960's) colleges and schools were building >their own computers as >was discussed on this list a few months ago. > >for mini sized >1940's 1950' >http://www.dcs.bbk.ac.uk/about/history/ > >Dave Caroline > > >------------------------------ > >Message: 26 >Date: Wed, 13 Mar 2013 16:31:14 -0700 >From: Chuck Guzis <cclist at sydex.com> >To: General Discussion: On-Topic and Off-Topic Posts > <cctalk at classiccmp.org> >Subject: Re: Care and Feeding of Vacuum Tubes (Valves) >Message-ID: <51410C42.3000103 at sydex.com> >Content-Type: text/plain; charset=ISO-8859-1; format=flowed > >On 03/13/2013 04:08 PM, Zane H. Healy wrote: >> Do any special precautions need to be taken with storing vacuum tubes? >> Are these something that can simply be tossed in the attic and forgotten >> about until needed? I recently got a fair number, and expect to get >> more at some point in the future. >> >> A lot of the ones I got are simply dumped in an old metal tool box. > >Nothing that I'm aware of eats vacuum tubes--and I've got some pre-WWII >stuff that's still ticking right along. I'd be careful with excess >moisture if I had a bunch of old lighthouse tubes or any other oddball >metal-to-glas stuff. > >But, aside from mechanical shock, tubes are about as inert as one can get. > >--Chuck > > > > >------------------------------ > >Message: 27 >Date: Wed, 13 Mar 2013 19:38:35 -0400 >From: David Riley <fraveydank at gmail.com> >To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> >Subject: Re: Care and Feeding of Vacuum Tubes (Valves) >Message-ID: <FAC4BA8A-5EE6-45B5-A5C3-80DAB09B143C at gmail.com> >Content-Type: text/plain; charset=us-ascii > >On Mar 13, 2013, at 19:08, "Zane H. Healy" <healyzh at aracnet.com> wrote: > >> Do any special precautions need to be taken with storing vacuum tubes? Are these something that can simply be tossed in the attic and forgotten about until needed? I recently got a fair number, and expect to get more at some point in the future. >> >> A lot of the ones I got are simply dumped in an old metal tool box. > >Other than "be careful with them", not much. I like to wrap >mine in paper, preferably wax paper; it keeps its shape >well, which keeps the little nubbins on top of the miniature >noval tubes from fracturing. Take the same care when >transporting as you would with expensive light bulbs. >If any still have the cartons, I like to keep them in there >(wrapped in paper to immobilize). > >- Dave > > >------------------------------ > >Message: 28 >Date: Wed, 13 Mar 2013 19:42:26 -0400 >From: David Riley <fraveydank at gmail.com> >To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> >Subject: Re: More fun stuff-bring out the vacuum tubes! >Message-ID: <B79BE93A-45AF-446F-9554-8E1BA8860321 at gmail.com> >Content-Type: text/plain; charset=iso-8859-1 > >On Mar 13, 2013, at 6:03 PM, Ethan Dicks <ethan.dicks at gmail.com> wrote: > >> On Wed, Mar 13, 2013 at 4:50 PM, Cindy Croxton Electronics Plus >> <sales at elecplus.com> wrote: >>> http://diyaudioprojects.com/Tubes/tubes.htm >> >> Nice. I have a few old 12V tubes (NOS from a science lab that was >> decomissioned a few years back that had some parts going back to the >> mid-1950s - ancient carbon composite resistors and all). I'm looking >> at that 12V battery-powered headphone amp project as an easy >> get-started project. I think I have everything on hand except the >> tube socket. > >If you need octal or noval ones, I have a few nice ceramic ones >that I'd be glad to send one or two of. Otherwise, they're still >relatively easy to find; I like triodeelectronics.com because >they've done nicely by me in the past, but there are literally >dozens of tube vendor sites out there. > > >- Dave > > > >End of cctech Digest, Vol 115, Issue 17 >***************************************

13 years, 5 months

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nCube 2 documentation

by jan＠janadelsbach.com

Hi all, I've coincidentally found some nCube 2 documentation while looking for some SGI docs on the net; There are manpages: http://rsusu1.rnd.runnet.ru/cgi-bin/man-cgi.ncube ...and some docs: http://rsusu1.rnd.runnet.ru/ncube/ndoc/ndoc.html Also there is some other info although its in Russian; http://rsusu1.rnd.runnet.ru/ncube/ Jan

13 years, 5 months

1
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Computer Art posters

by tom_a_sparks＠yahoo.com.au

I am looking for computer Art posters for my room the art style I am look for date around 1970 to 1985 Artist: Melvin Prueitt, David Em Movies: Tron? Companies: Triple-I (Information International Inc.), Mathematical Applications Group, Inc. Constructive solid geometry, ray tracing --- tom_a_sparks "It's a nerdy thing I like to do" Child of the Internet born 1983 PGP DA98 A195 06AD 1330 7EB0??50C3 724C 9974 A7EF 6006 Please use ISO approved file formats excluding Office Open XML - http://www.gnu.org/philosophy/no-word-attachments.html Ubuntu wiki page https://wiki.ubuntu.com/tomsparks

13 years, 5 months

2
1
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ex-Military Console...

by jon＠jonworld.com

Hi everyone, Anyone familiar with these? A FOAF picked up a few at a surplus auction. My friend took one apart and hacked the AT keyboard and trackball to work with a Mini-ITX PC, but the guts of these are all 300VDC to 35VDC converters, among other things. The LCD seems to be 800x600. http://imgur.com/a/t1eS9 I'm figuring it could be made into a fun console with swiping some insides out (or even a dedicated MAME box/console, especially with the trackball. Think Centipede.) -Jon

13 years, 5 months

2
1
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New look for retroarchive.org!

by geneb＠deltasoft.com

Please take a peek at http://www.geneb.org/glasstty and let me know what you think. If your browser supports alternate style sheets (In FireFox, it's View->Page Style), you can change the color to green. :) Thanks! g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind. http://www.diy-cockpits.org/coll - Go Collimated or Go Home. Some people collect things for a hobby. Geeks collect hobbies. ScarletDME - The red hot Data Management Environment A Multi-Value database for the masses, not the classes. http://www.scarletdme.org - Get it _today_!

13 years, 5 months

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Forget UPS was Re: Shipping Heavy/Large Items Via UPS

by rampaginggreenhulk＠yahoo.com

You can obtain large cartons from Walmart on the overnight shift. Also Home Depot and Lowes, though Lowes insist on being homos lately. You can get soft (and hard) foam slabs from the dumpsters behind large craft stores (Michaels), Pier 1 Imports, Staples (for those that still have conventional dumpsters). Sometimes cardboard is a better choice for cushioning material, use your judgment, and it adds weight. Avoid UPS. Fedex and USPS are much cheaper. But if you use Fedex you need to consider *ALL* the excessive G-forces your items will be subject to. For heavy and/or bulky items I wrap wrap wrap the box with cheapo packing tape, dollar store or Wally World, 1$ a roll. It just makes much more sense then spending 2.50-3.50$ a roll.

13 years, 5 months

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More fun stuff-bring out the vacuum tubes!

by a50mhzham＠gmail.com

I have zillions of old tubes pulled from radios and TVs by a guy whose estate was sold-- except for the tubes. Nobody wanted them. I'm looking for a simple project I can build (like a stereo amp) but without the tight tolerances and high-end ultra-purist attitude I seem to find whenever I look into it. I just want to build something that will perform a basic function and look cool glowing in the dark. I also have grand-dad's old Heathkit tube tester, so I have that going for me anyhow. I've built kits before, but I'm not necessarily looking for a kit. A decent set of plans with some suggestions for physical layout and mounting, for guys like me who came of age in the 555 timer / 74xx TTL age. -T At 05:03 PM 3/13/2013, you wrote: >On Wed, Mar 13, 2013 at 4:50 PM, Cindy Croxton Electronics Plus ><sales at elecplus.com> wrote: > > http://diyaudioprojects.com/Tubes/tubes.htm > >Nice. I have a few old 12V tubes (NOS from a science lab that was >decomissioned a few years back that had some parts going back to the >mid-1950s - ancient carbon composite resistors and all). I'm looking >at that 12V battery-powered headphone amp project as an easy >get-started project. I think I have everything on hand except the >tube socket. > >-ethan 489 . [Commentary] All our science, measured against reality, is primitive and childlike --and yet it is the most precious thing we have. --Albert Einstein a50mhzham at gmail.com ? N9QQB (amateur radio) "HEY YOU" (loud shouting) ? Second Tops (Set Dancing) ? FIND ME ON FACEBOOK 43? 7' 17.2" N by 88? 6' 28.9" W ? Elevation 815' ? Grid Square EN53wc LAN/Telecom Analyst ? Open-source Dude ? Musician ? Registered Linux User 385531

13 years, 5 months

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Fun Power Supply repair tip

by derschjo＠gmail.com

Hey all -- This'll probably rank as a "duh" moment for most of you but I thought I'd share (mostly because it amused me): I was trying to figure out why the unregulated 8VDC line of my SWTPC 6800's power supply kept dipping so suddenly under moderate load (and why it would keep falling and falling as long as I left it running that way...) The overall behavior was: - Power up with minimal load (just the motherboard w/it's onboard regulator): 8V line was fine at about 8.7V. - Add up to two RAM cards and the 8V was still at around 8.3 or so. - Add a third card and 8V drops to 6.5V and continues to drop steadily over time. This had me scratching my head. Then I happened to notice that the fuse (F1 on the 12V supply board) was glowing a dull orange and getting brighter. Well, turns out that someone (me!) had installed the wrong fuse -- it was a 2.5A fuse where a 10A was required (F2 takes the 2.5A, btw). Apparently when fuses start to give out they draw a lot of current -- lesson learned :). Fuse replaced and all is happy. So, the lesson is: check your fuses carefully. - Josh

13 years, 5 months

10
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An amazing looking Sun 3/280

by michael.99.thompson＠gmail.com

> From: Dave McGuire <mcguire at neurotica.com> > Date: Thu, 14 Mar 2013 06:17:22 -0400 > Subject: Re: An amazing looking Sun 3/280 > I built *dozens* of such racks from early 1993 to late 1995, filled > with Sun 3/50 and 3/60 boards that were netbooted. This was a > progenitor of what we now call "blade systems". Of course Sun swore it > wouldn't work (nobody knows less about Sun computers than Sun...never > seen anything like it) and of course someone else took the credit, but > it's documented at least. > > -Dave > > -- > Dave McGuire, AK4HZ > New Kensington, PA I stripped dozens of processor boards from 3/60 systems that were then sold to your employer. -- Michael Thompson

13 years, 5 months

1
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The genesis of Acorn's RISC OS

by lproven＠gmail.com

Transcript of a talk that I helped to arrange last year for the RISC OS User Group of London (ROUGOL): -- Liam Proven ? Profile: http://lproven.livejournal.com/profile Email: lproven at cix.co.uk ? GMail/G+/Twitter/Flickr/Facebook: lproven MSN: lproven at hotmail.com ? Skype/AIM/Yahoo/LinkedIn: liamproven Tel: +44 20-8685-0498 ? Cell: +44 7939-087884

13 years, 5 months

3
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HP 9830 computer and HP 9860 mark-sense card reader

by ethan.dicks＠gmail.com

On Wed, Mar 13, 2013 at 9:38 PM, Brent Hilpert <hilpert at cs.ubc.ca> wrote: > As Rob pointed out, the 9830 one must be special order to HP though, to > obtain the lazy-T cursor, unless there's some alternative tortured way > they're injecting the T into the display scanning that I'm not seeing. Thank you for mentioning this. I've asked on the list now and again about a computer I used c. 1976 that had a "lazy-T cursor". I was quite young at the time and it was only brought to our school for a special occasion, so my memories are quite fuzzy about it, but having now googled with some useful keywords, I'm reasonably certain that the device I was trying to describe was an HP 9830 with an HP 9860 mark-sense card reader. It seems unlikely I'll ever end up with one, so I'm happy to have found this emulator, updated less than a year ago... http://sourceforge.net/projects/hp9800e/files/go9800/ Thanks again for the very helpful nudge in precisely the correct direction! -ethan

13 years, 5 months

4
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TMS4100 IC

by hilpert＠cs.ubc.ca

Idle curiousity, does anyone happen to know whether the TMS4100 ROM was a standard off-the-shelf character generator from TI, or was it a generic mask-ROM-to-customer-order, or otherwise have data on it such as it's native size. Full id: TMS4100 ZA 5705 T-04163 7308 <-- date code It's the character generator in the HP9830, arranged for character column scanning order rather than row scanning (7-bits columns at the outputs rather than 5-bit rows). I see three possibilities: - the TI TMS4100 is a character generator ROM - it's a TI TMS 4100 mask ROM, programmed and sold by TI as a character gen - it's a TI TMS 4100 mask ROM, programmed to order for HP I've sorted out the pinout, so it's not a dire need, just curious.

13 years, 5 months

2
3
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Looking for 1952 ACM conference proceedings.

by go＠aerodesic.com

I searching for a paper copy of the proceedings of the 1952 ACM conference in Toronto. Our school library only goes back to 1959. To obtain from the ACM (digitally) would cost several hundred dollars, so I'm looking for a real dead-tree copy to avoid copyright infringement issues. I'm unable to obtain digital access through our library because I'm not a faculty/staff/student and don't see becoming one for this purpose :-) If any of you (I know there a few old farts besides me on this list) could part with a copy (even as a 'loaner') I would greatly appreciate it. Other issues in the late 40s through late 50s are also interesting, but current research is focusing on a few items discussed in this particular volume. The ACM was founded in 1947. I'd pay for this as well as return postage if necessary. Thanks, Gary

13 years, 5 months

4
4
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Care and Feeding of Vacuum Tubes (Valves)

by wdonzelli＠gmail.com

> Do any special precautions need to be taken with storing vacuum tubes? Are > these something that can simply be tossed in the attic and forgotten about > until needed? I recently got a fair number, and expect to get more at some > point in the future. Temperature extremes are really not a problem, simply because they are made for such extremes during normal operation. Moisture can be a problem in extreme cases, but normally not much of an issue either - mostly the boxes suffer (and metal tubes, I suppose). The only thing that really is bad for tubes is salt spray. Don't store your tubes in a seaside shack. -- Will

13 years, 5 months

4
6
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Looking for 1952 ACM conference proceedings.

by go＠ao-cs.com

I searching for a paper copy of the proceedings of the 1952 ACM conference in Toronto. Our school library only goes back to 1959. To obtain from the ACM (digitally) would cost several hundred dollars, so I'm looking for a real dead-tree copy to avoid copyright infringement issues. I'm unable to obtain digital access through our library because I'm not a faculty/staff/student and don't see becoming one for this purpose :-) If any of you (I know there a few old farts besides me on this list) could part with a copy (even as a 'loaner') I would greatly appreciate it. Other issues in the late 40s through late 50s are also interesting, but current research is focusing on a few items discussed in this particular volume. The ACM was founded in 1947. I'd pay for this as well as return postage if necessary. Thanks, Gary -- Sent from my Android tablet with K-9 Mail. Please excuse my brevity.

13 years, 5 months

1
0
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VT102

by wilson＠dbit.com

Second, shorter try, (last one moderated?): anyone have a VT102 they'd be willing to sell/trade (I have many Q-bus boards)? NE US ideal, but. Tnx / JW

13 years, 5 months

4
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Scam alert...

by jon＠jonworld.com

Hi everyone! Per some advice here I posted locally on craigslist for items wanted. This morning I received a text message saying "click here to see if my items match what you're looking for." ? it was an image hosting site named "imgsend.com" and seemed nearly-legit. I went there from my phone and said "missing plug-in." Odd. I went there from my Mac. It said I needed a plug-in to view GMP-based GIMP images. GIMP doesn't make GMP images. At this point I knew something was wrong and began to break out my google-fu. This is what I learned, after you click to "add plugin" it points you to a website that redistributes GIMP with known malware and spyware. Once you have that installed and visit the site to view your photos, the malware is activated, and likely your banking credentials are stolen. Just something else to be alert for.

13 years, 5 months

2
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Wanted: C-64 equip for project

by starmaster＠gmail.com

Was wondering if anyone had any unwanted working/non-working Commodore items. I am helping my grandson on a school project. Thank you starmaster(at)gmail.com

13 years, 5 months

2
1
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Education & vintage/classic computing

by c.murray.mccullough＠gmail.com

I have a question that concerns vintage/classic computing intersecting the education world: Can anyone tell me what was the first microcomputer used in an education setting for teaching purposes? Thanks. Murray :)

13 years, 5 months

5
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anyone got a TRS-80 model 4P for parts/repair?

by rampaginggreenhulk＠yahoo.com

------------------------------ On Sun, Mar 3, 2013 11:37 AM PST Adrian Graham wrote: >On 02/03/2013 21:57, "Chris Tofu" <rampaginggreenhulk at yahoo.com> wrote: > >> preferably not on the west coast. > >Oh, therefore preferably not in the UK either? I have one 6 feet away from >me that's less than well... So fix it! What is wrong with it anyway? It's the only non-2000 TRS-80 that catches my fancy these days. Where have you been anyway? And where's Andrew ("aliensrcool")? Are those of you with A's as their first letter too Aloof to hang out with us?? >-- >Adrian/Witchy >Binary Dinosaurs creator/curator >Www.binarydinosaurs.co.uk - the UK's biggest private home computer >collection? > >

13 years, 5 months

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Forget UPS was Re: Shipping Heavy/Large Items Via UPS

by rampaginggreenhulk＠yahoo.com

------------------------------ On Tue, Mar 12, 2013 12:01 PM PDT Doc wrote: >On 3/12/13 1:40 PM, Liam Proven wrote: >> I have communicated privately with "Chris Tofu". I know him to be a >> nasty, bigoted, hate-filled fundamentalist - and really very stupid to >> boot. So all I wish to do is shut him up. > > > Oddly enough, that perfectly describes both my assessment of and my desire concerning you. > > Please stop rationalizing your bigoted spew and shut the fuck up. > > > Doc I mean really. I did approach him in a friendly manner, for the purpose of engaging in friendly debate. And it would seem he just couldn't handle it. I cannot understand why the discussion turned so vitriolic. I'll extend the olive branch once more, and even apologize fully for earlier comments. But like doc said you really need to shut that little trap once in a while Liam.

13 years, 5 months

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More fun stuff-bring out the vacuum tubes!

by sales＠elecplus.com

http://diyaudioprojects.com/Tubes/tubes.htm _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2904 / Virus Database: 2641/6166 - Release Date: 03/12/13

13 years, 5 months

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Xerox 820-II & external FDC

by mc68010＠gmail.com

On 3/11/2013 11:37 AM, Enrico Lazzerini wrote: > Hi, I received a Xerox 820-II mainboard. I've found that does not have a FDC > on board and that the 37-pin connector used to connect the floppy disk it > seems to have a bus and its own protocol to talk to an external FDC board > outside. Is there anybody who knows more and is it there a way to try to > connect and operate the drive with this mainboard? > Having cleaned the heads, about every other disk going through a box of 8" 820 disk, sthere is nothing in the drive other than the drives and a power supply. I am not sure if the 820-II is different but, I doubt it. The cable just splits off to each drive. Everything is on the mainboard.

13 years, 5 months

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DEC Pro 380 vs VAX 8800 console

by rampaginggreenhulk＠yahoo.com

------------------------------ On Tue, Mar 12, 2013 9:03 PM PDT Dave McGuire wrote: > I don't know offhand, but amusingly, I know that seller well. That's >a surplus place that I used to shop at every Saturday when I lived in >Maryland. I haven't been there in about twelve years, but it was >AWESOME the last time I was there. He was never really open to the >public, but a group of us would go every weekend and drop way too much coin. I can believe it. 90$ for a Jornada??! Incidentally 6 months ago or a bit more someone on the list was clearing out their storage unit and was offering boxes in this category. Chicago area I think.

13 years, 5 months

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5151 hunt...

by geneb＠deltasoft.com

Found one thanks to a listmember. Still chasing a 5150 compatible keyboard. tnx. -gene -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind. http://www.diy-cockpits.org/coll - Go Collimated or Go Home. Some people collect things for a hobby. Geeks collect hobbies. ScarletDME - The red hot Data Management Environment A Multi-Value database for the masses, not the classes. http://www.scarletdme.org - Get it _today_!

13 years, 5 months

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more books FFS

by dgriffi＠cs.csubak.edu

I have two more books free for shipping. The Fortran 77 one is gone. Here's what I have: *Motorola CMOS/NMOS Special Functions Data (1986) *Turbo C Reference Guide (1987) from Borland *UNIX Primer Plus by Waite Group Staff (1983, Softcover) *Introduction to WordStar by Arthur Naiman (1983, Paperback) *WordStar with Style by Roger White (1983, Paperback) *The Illustrated CP/M WordStar Dictionary with MailMerge and SpellStar *Word Processing on the Kaypro by Peter A. McWilliams (1983, Paperback) Take one or many. -- 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?

13 years, 5 months

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Adolescent behavior, was Forget UPS was Re: Shipping Heavy/Large Items Via UPS

by rampaginggreenhulk＠yahoo.com

You're supposed to embrace love and worthwhile judgment. People cherry pick what suits them from the bible and ignore the rest. You've never read it. You don't have a clue. VICIOUS ATTACK??!! Someone threatens me publicly. Did I threaten anyone??? What the hell is said or going to be done about the threats issued??? NOTHING. And if I were inclined to take it the least bit seriously, I'd do something. Little big mouth. You can also go to Hell Dave. Talking crap like that could get you in a lot of trouble real quick. ------------------------------ On Wed, Mar 13, 2013 12:46 PM PDT Camiel Vanderhoeven wrote: >On Wednesday, March 13, 2013, Chris Tofu <rampaginggreenhulk at yahoo.com> >wrote: >> >> Yes Chuck I enjoyed and appreciate your inputs over the years also. But >there's just too much going wrong with the fucking world to just sit idly >by. That's the price that has to be payed I guess. >> Thanks for the kind words though. Bound to be a lot more then I'll get >from anyone else. > >I agree that a lot is wrong with this world. One of these things is >Christians forgetting love and embracing judgment. Nowhere in the >example Jesus set can I find any justification for this kind of vicious, >hurtful attack on a fellow human being. If it were justified , I would >rather be an atheist than a selfrighteous christian. > >Camiel

13 years, 5 months

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Does anyone know

by doc＠vaxen.net

How to unsubscribe? Yes, I've been to www.classiccmp.org and hit the "Unsubscribe" button. Repeatedly. Doc

13 years, 5 months

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Forget UPS was Re: Shipping Heavy/Large Items Via UPS

by JWOLFE＠19209.decnet.org

*shrug* Both of my RL02 drives were shipped via UPS in giant boxes. The delivery guy looked at me funny, but for only $70 it was worth it.

13 years, 5 months

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Subject: Re: Adolescent behavior, was Forget UPS was Re: Shipping Heavy/Large Items Via UPS

by js＠cimmeri.com

cctalk-request at classiccmp.org wrote: > Subject: > Re: Adolescent behavior, was Forget UPS was Re: Shipping Heavy/Large > Items Via UPS > From: > Dave McGuire <mcguire at neurotica.com> > Date: > Wed, 13 Mar 2013 14:43:03 -0400 > > To: > General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> > > > Ok, THAT'S IT. Get the FUCK off of this list. > > NOW. > > I would beat the living daylights out of you if you were anywhere > nearby. On your front lawn, in front of your wife. > > Jackass. > > -Dave Felony assault as a response to some zealot's silly, harmless words? You think this display of an excessively self-important ego demonstrates what a "better man" is? Talk about appalling, crude behavior. /"Violence is the last refuge of the incompetent" -- /Isaac Asimov

13 years, 5 months

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Does anyone know

by barythrin＠gmail.com

Btw Doc, (if you get this). It may be a difference in subscribing to the moderated cctech list instead of the cctalk. Cctech is supposed to only include on topic chatter. Although you'd miss all the hilarious comments and flame wars. ------Original Message------ From: Doc 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: Does anyone know Sent: Mar 13, 2013 12:15 AM On 3/12/13 6:51 PM, Rob wrote: > On 12 March 2013 21:56, Doc Shipley <doc at vaxen.net> wrote: >> How to unsubscribe? >> >> Yes, I've been to www.classiccmp.org and hit the "Unsubscribe" button. >> Repeatedly. > > Try email cctalk-request at classiccmp.org with a subject of "unsubscribe" Well now I feel dumb as a box of rocks.... I used to know that. Doc

13 years, 5 months

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Flextra BR-3020 or BR-3225 25/50MB Floppy Drive

by robin＠hx-20.com

On 03/12/2013 09:29 AM, Robin England wrote: > Does anyone have a Brier Technology BR-3020 or BR-3225 high capacity floppy drive I could borrow please? >Wouldn't an Insite I325VM work just as well if reading is your object? >I suspect that there are far more of them than the Brier units. >--Chuck Thanks Chuck. Do you know for sure that the I325VM can read the Flextra 25MB discs?

13 years, 5 months

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ebay Vintage Imlac PDS 1 kinda over priced

by tdk.knight＠gmail.com

found this on ebay tonight for 19k or 65k buy it now :O holy crap... http://www.ebay.com/itm/Vintage-Rare-Imlac-PDS-1-Computer-Graphical-Display…

13 years, 5 months

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All about CRT tubes, and HP semiconductor PN cross ref

by sales＠elecplus.com

http://www.hparchive.com/Bench_Briefs/HP-Bench-Briefs-1981-03-05.pdf Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 (830)792-3400 phone (830)792-3404 fax AOL IM elcpls _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2904 / Virus Database: 2641/6166 - Release Date: 03/12/13

13 years, 5 months

1
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Univac III available

by jws＠jwsss.com

I have a system which has been talked about here available for sale. Several list members probably know about it, and had expressed interest. I'm trying to sell it for a friend. The bulk of the system is in Norco, Ca, and there is a large block of card equipment still in Ok, City. Please make offers http://jwstephens.com/univac3/page_01.htm http://jwstephens.com/univac3/page_01.htm I can supply more information on request. thanks Jim

13 years, 5 months

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