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

by dave＠mitton.com

I'm trying to get rid of some older computer magazines to anyone interested in picking them up (Northwest of Boston) or paying Media mail rates. PC Tech Journal 1985 thru 1989v4 with a couple missing 1988 issues and 1984 v1 & v6. Dr Dobbs Journal: 1976 v1 book reissue & Mar, Sept, Oct and most of years 1977 thru 1985 I also have many issues of S-100 Microsystems/Microsystems/Microsystems Journal for 1980 thru 1988. I filled in the missing issues at the CHM and therefore the list is now full of holes. Exact issue counts available upon request. Dave

18 years, 7 months

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Fwd: Xerox 1186 LISP machines in Illinois

by mtapley＠swri.edu

All, Possibly redundantly to some of you, I'm passing on this email, which I received this morning (presumably due to my presence on the Color Computer or Classic-Comp rescue lists). The systems are in southern Illinois, according to a later exchange with the offerer. Diana included a set of pictures with the first email, which I'll be happy to forward if you are interested, but I strongly suggest you contact her directly. I have no connection to her or previous acquaintance with her. >Date: Thu, 24 Jan 2008 09:31:52 -0600 (GMT-06:00) >From: Diana Moutell <dmoutell at earthlink.net> >Subject: Xerox 1186 LISP machines > > Hello!! > > >I wondered if you had an interest in the Xerox 1186 produced around >1986. Pictures are attached. I know they are quite uncommon. I have >7 of the computers... one monitor.... and now one keyboard. I just >found the keyboard... and an amazing amount of literature, manuals >and software (in addition to what is in the one picture). I >literally have mountains of manuals and boxes of software... really >large floppies and then the smaller ones I remember from my first >computer days (the 5 inch ones) !! I have yet to look through it all >and determine what is there. > >All of the Xeroxes I have are pretty much the same except some are >missing the C7 rigid 80Mb disk. I took pictures of the back of one >with the drive and one without the drive. The product code on the >one pictured with the C7 is 62H. Some of them have a panel over the >place that contains C6 and C7. I did not remove it and I am not sure >I can easily. I believe the person who had them had them all >together. > > >There are only two external hard drives that attach to the back - >the product code on the bottom of the one is 78D. There is a picture >of one of them. I know that they have had one owner and have been in >one general area since the beginning. I believe they have been moved >twice in their life after the initial delivery. > > At this time I do not know if any will power up. I believe I found >their original power cords.... but I do know that the hard drives >have been erased because the data that had been stored on them was >of a private research based nature. I will try some soon. > > They are heavy and really take the space... but I, as a collector >of hundreds of things, am accustomed to tripping over my stuff!!! I >only have received a couple of bruises from these and their >acquisition! I do not collect computers, though. However, as I look >at them and all the stuff with them... I and my friends fear that I >will become attached to them, and never be able to let them go. >However, my intent is to sell them. I have seen so many sites of >individuals who have such a love for saving, protecting and >restoring these things. My collections are really just to admire not >to repair or use. In fact, I am oftened asked "does it work" when >people look at my stuff (especially the vintage radios) and my >answer is " I do not know." Most of the have never been plugged in >at all. I just want them because they are beautiful. > >If I do let go of these... I want to know they will be safe for eternity. > >If you are interested in more info... let me know and when I learn >more and compile the list of literature... I will send it to you. > > >Thanks!! >Diana > > >Diana Fuller-Moutell ><mailto:dmoutell at earthlink.net>dmoutell at earthlink.net >Why Wait? Move to EarthLink. > -- - 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.

18 years, 7 months

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DEC Professional 350 help

by thrashbarg＠kaput.homeunix.org

Hi, I've had a very dead DEC 350 in the shed for a while now and I've just had a look at it, there are a lot of chips on it I can use. But before I give everyone here a heart attack, is there any chance of rescue? When I turn it on the 4 numbered LED's come on immediately, as does the green DC light. Then nothing. Not a blip. I tried removing all unneeded cards and still nothing. Is this thing absolutely dead? Or can it be saved. Also, is there any information for the three LSI-11 chips on it - pinouts etc? I haven't been able to find anything about them anywhere. Perhaps they remained proprietary to DEC. I'd like to see them out of curiosity, and if the 350 itself proves to be completely dead I'll see if I can wire them up on some prototype board and have a play around. One chip is labeled (perhaps it's a FPU, I don't know) DEC 304 E 21-15542-01 6436-40 I 8352 (that looks like a date code) The other two have two dies each (which I guess is the processor itself) IC 1, Left (closest to pin 1): DEC 303E 23-001C7-AA 6319-29 8348 TIWAN (date code again) Right: evidence of a label exists, but it's unreadable IC 2, Left: DEC 303E 23-002C7-AA 6587-03 8425 Right: DEC 303E 23-203C7-AA 6638-10 8422 there is also some print on the ceramic itself IC1: 57000001A1 and a date code IC2: 57000101A1 date code Any information about these chips or the DEC Pro 350 is appreciated! Thanks, Alexis.

18 years, 7 months

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Xerox 1186 LISP machines available in southern Illinois

by frustum＠pacbell.net

I received an email that has sent to a number of other folks, but but apparently there are no takers yet, and Xerox computers aren't up my alley. I asked and she said it would be OK to forward her email to the list. If you are interested, and really can give these machines a caring home, and not just space in your trophy collection, please let me know and I'll forward your contact information to the sender and she can sort out who should get it. (quote) I wondered if you had an interest in the Xerox 1186 produced around 1986. Pictures are attached. I know they are quite uncommon. I have 7 of the computers... one monitor.... and now one keyboard. I just found the keyboard... and an amazing amount of literature, manuals and software (in addition to what is in the one picture). I literally have mountains of manuals and boxes of software... really large floppies and then the smaller ones I remember from my first computer days (the 5 inch ones) !! I have yet to look through it all and determine what is there. All of the Xeroxes I have are pretty much the same except some are missing the C7 rigid 80Mb disk. I took pictures of the back of one with the drive and one without the drive. The product code on the one pictured with the C7 is 62H. Some of them have a panel over the place that contains C6 and C7. I did not remove it and I am not sure I can easily. I believe the person who had them had them all together. There are only two external hard drives that attach to the back - the product code on the bottom of the one is 78D. There is a picture of one of them. I know that they have had one owner and have been in one general area since the beginning. I believe they have been moved twice in their life after the initial delivery. At this time I do not know if any will power up. I believe I found their original power cords.... but I do know that the hard drives have been erased because the data that had been stored on them was of a private research based nature. I will try some soon. They are heavy and really take the space... but I, as a collector of hundreds of things, am accustomed to tripping over my stuff!!! I only have received a couple of bruises from these and their acquisition! I do not collect computers, though. However, as I look at them and all the stuff with them... I and my friends fear that I will become attached to them, and never be able to let them go. However, my intent is to sell them. I have seen so many sites of individuals who have such a love for saving, protecting and restoring these things. My collections are really just to admire not to repair or use. In fact, I am oftened asked "does it work" when people look at my stuff (especially the vintage radios) and my answer is " I do not know." Most of the have never been plugged in at all. I just want them because they are beautiful. If I do let go of these... I want to know they will be safe for eternity. If you are interested in more info... let me know and when I learn more and compile the list of literature... I will send it to you. (end quote)

18 years, 7 months

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BTI 8000

by aek＠bitsavers.org

> Ron Crandall. > Since much of the team came from > the same school in Oregon and worked on the same system, the 8000 > suffered a classic case of second system syndrome. "OS-3, the Oregon State Open Shop Operating System James W. Meeker, Ronald Crandall, Fred A. Dayton, G. Rose" > Also keep in mind that BTI's bread-and-butter wasn't the 8000, but the > 5000, which was essentially a clone of the HP 2100 and ran HP software... eeek! too much synchronicity going on there. HP 2000, BTI, OS-3 All systems I've been researching for a while. No wonder the names sounded familiar. I have seen the BTI 5000 front panel, looks like a simplified HP1000 one.

18 years, 7 months

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Tom Poulter

by aek＠bitsavers.org

http://www.drj.com/articles/spr99/poul.htm "Tom Poulter graduated from Stanford University with a BS degree in Physics and has been BTI?s CEO for 30 years. Prior to co-founding BTI Computer Systems, Tom was employed at Hewlett Packard designing a signal conditioning product line & as Systems Product Manager for HP?s bundled computer systems including HP?s first timesharing system." Sounds like a good guy to chase down, both for BTI material and 2000 stuff, esp since HP has opened up the sources, but didn't actually have any of the early software.

18 years, 7 months

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BTI 8000

by aek＠bitsavers.org

In Aug, 2004, Jim Battle wrote: > Speaking of core memory, I used to work for a company that was still > shipping core-based systems in 1985, when I first joined them right out > of college. > > The machine was the "BTI 8000", made by BTI Computer Systems, based in > Sunnyvale, CA. I worked there for only a year, but I have some > recollection of the machine. I turned up a brochure and technical summary last night, scans up under http://bitsavers.org/pdf/bti

18 years, 7 months

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GE GP220 system?

by jules.richardson99＠gmail.com

Hi all, (I'm slowly getting back up to speed with the list!) Spotted in Seattle last week - a General Electric GP220 controlling a large industrial robot arm. Is anyone familiar with this beast? Is it even a computer as such? It's a big cabinet (maybe 6ft high, 3ft wide), and this one had an Apple ][ perched to one side, giving the impression of a console - but maybe the GP220 is just some sort of interface between the Apple ][ and the hydraulics of the robot arm, and the Apple actually contained all the smarts? However, there was a large hand-held controller attached to the GP220 with a big keypad and LED readouts - unfortunately the photo I grabbed was a bit too fuzzy to make much out on it (but one of the LED seven-seg displays looks to say 'program no.' underneath, implying that the system did have built-in intelligence of some kind). There's also what looked to be a built-in CRT on the front of the cabinet too, but it was covered by a large shroud and wasn't obviously displaying anything when I saw it - it could have been nothing more than a piece of glass over some mechanical readouts or something else deep within the bowels of the cabinet. Power input was a hefty 460VAC 3-phase at 40A according to the data plate. No obvious build date, unfortunately. cheers Jules

18 years, 7 months

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Need 28VDC 4Amp PS...

by trag＠io.com

I saw a little more info on this topic. There are quite a few different Apple displays which use the ADC connector, and as you might imagine, the power demand of each one is different. The 17" Studio Display has a rated power demand of 40 watts, e.g.. Of course the bigger 23" displays and such will draw much more power. So, at 28V, if you could supply 1.5A you'd be okay, even with that display connected. Now, you've not going to get 1.5A at 28V stepping up the trickle supply, but the display isn't on while the computer is off, and once the computer comes on, there should be 30 or so amps available on the 5V supply. You'd just need to be sure to use a voltage booster which can handle the larger amperage and an ATX supply with a hefty 5V current rating. I think some of NS's boosters go as high as 3A. They have a nice table on their website which lists such characteristics. Jeff Walther

18 years, 7 months

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Need 28VDC 4Amp PS...

by trag＠io.com

> > 22. Need 28VDC 4Amp PS... (Bill Sudbrink) > Date: Wed, 23 Jan 2008 16:52:23 -0500 > From: "Bill Sudbrink" <wh.sudbrink at verizon.net> > I'm fixing a PowerMac G4 for my Dad's wife. The original PS is dead. > It was a pretty standard ATX supply, the only difference is that it > supplies 28VDC at 4 Amps on two extra pins. Rather than spending a > lot of money on a new supply (more than $250 from the few sources that > will guarantee the PS) or a not insignificant amount on a used PS that > could go at any time, I want to put in a new standard ATX supply and > "tuck in" a small 28VDC PS to drive the two extra pins. The supply > is always on, so I can power it from a pass through on the ATX supply. > Does anyone have (or know where to get) a small supply? The 28V serves a couple of (mostly silly) purposes. Primarily it is there to supply 28V through the ADC video port so that a connected Apple display, which uses the (proprietary) ADC connector, can draw all of its power from the host Mac through the video cable at 28V. That is why the amperage rating is so high. I'm rather hazy on what the other purpose of the 28V supply is, but I'm under the impression that the machine will not start up without it. If you are not connecting an ADC based monitor, your power supply can have a much lower capacity. Which brings me to this: <http://www.io.com/~trag/28v_vreg.pdf> I did not design this, but it is a handy little circuit which boosts the 5V trickle to 28V to supply the needs which the Mac power supply has, other than powering an ADC monitor. I would not recommend connecting an ADC monitor to a Mac with this adaptation. The National Semi 2577 on which it is based is not rated to deliver 3A. You may wish to browse NS's website a bit. They have a variety of voltage boost chips available and IIRC the 2586 has a higher power rating. The ADC connector has been a curse to many Mac users. In addition to requiring the off-kilter power supply, most of the non-iMac/non-Mini Macs sold had dual video connectors but one of them was that stinkin' ADC connector. So if the user wanted two monitors he either had to buy an expensive (but fairly nice) Apple display or an expensive adapter. Furthermore, Apple routed the 28V supply to the video card through a pin which is now used on 8X AGP video cards. So one cannot install an 8X AGP card in "28V" Macs without neutralizing the 28V connection in some way. The analog video signals are present on the ADC connector, so it is possible to adapt through to plain old analog VGA, but the unusual form factor of the ADC connector means that as soon as Apple stopped hawking ADC, products, such as adapters, with the ADC connector stopped production. ADC to VGA adapters are only available on the used market now and rarely. There appears to be an infinite supply of Formac brand ADC to DVI adapters available, especially in Europe. However, for some reason the Formac (and most others) adapter does not pass through all of the analog signals. So going ADC-DVI and then DVI-VGA will not work unless one modifies the ADC-DVI adapter. I opened the thing (Formac adapter) up and it contains a small circuit board to which all the incoming analog signals are connected. It boggles me that they did not bother to connect them at the other end of the adapter. Jeff Walther

18 years, 7 months

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IBM 9221 mainframe at auction

by ceby2＠csc.com

This message reminded me I have a challenge with my 9221. It takes parallel bus and tag cabling. When I bought it, I completely forgot to catalogue to the cables with the package. You guessed it, I have lots of terminal cables by not a single bus cable. So there's a CPU, expansion cage, and 5 drives, but not a thing to connect them together [silent scream]. Does anyone on the UK side of this list actually have any surplus parallel bus and tag cabling, or a source for such things? The only way I've see so far is to have them manufactured for some laughable amount of money. Regards, Colin

18 years, 7 months

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Grid MS-DOS 3.3

by cclist＠sydex.com

> Date: Wed, 23 Jan 2008 18:42:26 -0500 > From: Dave Mabry <dmabry at mich.com> > Is there a chance you might put these files online again for me? Just > decided to resurrect a Grid 1535 and find I might be missing some files > that are specific to that hardware. Shows you what my own memory's like. They're still here: http://www.sydex.com/temp/griddos.zip Okay, I'll take it off *this* Friday (unless I forget). Cheers, Chuck

18 years, 7 months

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Seagate ST11R ST412 controller + Mitsubishi MR535R

by peter.hicks＠poggs.co.uk

Hello! I have an elderly Mitsubishi MR535R (60Mb-ish RLL) connected to an ST11R controller. The control and data cables are homebrew although neatly and tidying put together. When I power up an old Pentium II - because it's the only box I have with ISA slots - the ST11R pops up a message on the screen, clunks the drive in an "I'm accessing you" kinda way, but then reports "No drives found" and continues merrily on its way. The cables are straight-through, and I have the drive set to DS1. If I set the drive to DS2, the BIOS sits there for several seconds but doesn't access the drive. As my knowledge is a tad rusty, can anyone help identify what the problem here is? BIOS shadowing is off for the memory locations that are, and could, be used by the card. The only thing I can think of is that the ST11R is in fact an ST11M, tries to read the drive, goes "Uh-oh, don't recognise you" and reports "No drive found". Unfortunately I lack an MFM hard drive to test this out with :( Peter -- Peter Hicks | e: my.name at poggs.co.uk | g: 0xE7C839F4 | w: www.poggs.com A: Because it destroys the flow of the conversation Q: Why is top-posting bad?

18 years, 7 months

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PDP 11/24

by silvercreekvalley＠yahoo.com

I've read quite a few DEC faq's recently, but couldnt find performance spec's on the PDP 11/24. Is this the same as the original 11/23? How would it compare with a 11/34A? From what I can see the 34A was restricted to 256Kwords of RAM, whereas the 11/24 seems to support up to 1Mwords? Thanks Ian. ____________________________________________________________________________________ Looking for last minute shopping deals? Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping

18 years, 7 months

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Need 28VDC 4Amp PS...

by wh.sudbrink＠verizon.net

I'm fixing a PowerMac G4 for my Dad's wife. The original PS is dead. It was a pretty standard ATX supply, the only difference is that it supplies 28VDC at 4 Amps on two extra pins. Rather than spending a lot of money on a new supply (more than $250 from the few sources that will guarantee the PS) or a not insignificant amount on a used PS that could go at any time, I want to put in a new standard ATX supply and "tuck in" a small 28VDC PS to drive the two extra pins. The supply is always on, so I can power it from a pass through on the ATX supply. Does anyone have (or know where to get) a small supply? Thanks, Bill PS: This is sort of on topic because Apple says that this particular G4 is no longer supported and "vintage". No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.19.9/1238 - Release Date: 1/22/2008 8:12 PM

18 years, 7 months

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Fwd: Behr-Bonz VIC-20 Multicart available

by aliensrcooluk＠yahoo.co.uk

I know the new cart is modern, but the system it's for is old so I figured this would just about be on topic. Anyway, anyone with a VIC-20 read on... Regards, Andrew B aliensrcooluk at yahoo.co.uk rbernardo at iglou.com wrote: To: acug0447 at yahoogroups.com, auscbm at yahoogroups.com From: rbernardo at iglou.com Date: Sun, 13 Jan 2008 03:49:14 -0500 (EST) Subject: {Anything Commodore Users Group} Behr-Bonz VIC-20 Multicart available Long has been the dream of multiple VIC-20 games on one cartridge. Years ago programmer Ward Shrake envisioned and built himself a cart with dozens of games, all selected by dipswitches. Fast forward to 2008. VIC-20 multicart projects go on. For the past months, two different multicart projects have been in development. First out of the gate into the commercial arena is the Behr-Bonz VIC-20 Multicart. With hardware by Eslapion and a game selection menu system by Viande of Denial, the Behr-Bonz VIC-20 Multicart contains 127 games which originally were on separate carts. The following games are on the Behr-Bonz: AE Aggressor Alien Blitz Amok! arachnoid Artillery Duel Astroblitz Atlantis Attack of the Mutant Camels Avenger Bandits Battlezone Black Hole Buck Rogers: Planet of Zoom Capture the Flag Centipede Choplifter Cloudburst Clowns pour Joystick Clowns pour paddle Computer War Congo Bongo Cosmic Cruncher Cosmic Jailbreak Creepy Corridors Crossfire Cyclon Defender DemonAttack Dig Dug Donkey Kong Dragonfire Final Orbit + Bumper Bash Frogger FROGMAN.PRG Galaxian Garden Wars Gorf Gridrunner IFR (Flight Simulator) In the chips Jawbreaker II Jelly Monsters (clone of Pacman) Jungle Hunt Jupiter Lander KEYQUEST Krazy Antics Lazerzone Lode Runner Lunar Leeper Maze Medieval Joust Miner 2049'er Mobile Attack Mole Attack Money Wars Monster Maze Moon Patrol Mosquito Infestation Motocross Racer Mountain King Ms Pacman Mutant Herd Omega Race Outworld Pac-Man (original) Paratrooper Pharaoh's Curse Pinball Pipes Poker Polaris Pole Position Predator Princess and Frog Protector Q-Bert Radar Rat Race Raid on Fort Knox Rally-X Rat Hotel Renaissance (Othello) River Rescue Road Race Robot Panic Robotron 2084 Scott Adams: Adventure Land Scott Adams: Mission Impossible Scott Adams: Pirate's Cove Scott Adams: The Count Scott Adams: Voodoo Castle Sargon II Chess Satellite Patrol Scorpion Sea Wolf Seafox Serpentine Shamus Sir Lancelot Skibbereen Skyblazer Space Ric-O-Shay Spider City SPIDERS OF MARS Spike's Peak Spills and Fills Squish'em Star Battle Star Post Star Trek - Strategic Operations Simulator Submarine commander Super Amok Super Slot Super Smash Terraguard The Sky is Falling Threshold Tooth Invaders Topper Trashman Turmoil Tutankham Type Attack Typo Video Vermin Videomania Visible Solar System You can purchase the Behr-Bonz VIC-20 Multicart for $30 US plus $8 shipping to the US (shipping charge the same up to 10 carts). For postal fees to ship to other countries and other questions about the Behr-Bonz, inquire with eslapion(at)videotron.ca Paypal to eslapion(at)videotron.ca Other ROMs and services are available from Eslapion, too; just ask. I'm getting my Behr-Bonz VIC-20 Multicart right away! Truly, Robert Bernardo Fresno Commodore User Group http://videocam.net.au/fcug The Other Group of Amigoids http://www.calweb.com/~rabel1/

18 years, 7 months

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div by 10 on Z80

by cclist＠sydex.com

On 23 Jan 2008 at 19:16, Brent wrote: > Of course, from a clarity-is-all-important modern software design > perspective, we should all be shot. Naw, not even. "Obscure" is miles of spaghetti code twiddling bits seemingly at random in a word, then finally using a "count the 1 bits" instruction on said word to index into a jump table... > If I were an economist, I would predict that at this rate, in another few > weeks the routine will be down to 1 byte. Good thing for us that you're not an economist--you belong in management. Cheers, Chuck

18 years, 7 months

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BTI 8000

by cclist＠sydex.com

> Date: Wed, 23 Jan 2008 10:24:27 -0800 > From: Al Kossow <aek at bitsavers.org> > In Aug, 2004, Jim Battle wrote: > > > Speaking of core memory, I used to work for a company that was still > > shipping core-based systems in 1985, when I first joined them right out > > of college. > > The machine was the "BTI 8000", made by BTI Computer > Systems, based in > Sunnyvale, CA. I worked there for only a year, but I > have some > recollection of the machine. > > > I turned up a brochure and technical summary last night, scans up under > http://bitsavers.org/pdf/bti Holy cow--3.5 years to respond to a message! I'm not certain, but I think I may have a boot disk for the 8000, should anyone run into the real thing. Cheers, Chuck

18 years, 7 months

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Need 28VDC 4Amp PS...

by cclist＠sydex.com

> Date: Wed, 23 Jan 2008 16:52:23 -0500 > From: "Bill Sudbrink" <wh.sudbrink at verizon.net> Give http://www.jameco.com a shot--they have a bewildering thicket of power supplies in stock. The hardest part is getting through their inventory listing. Cheers, Chuck

18 years, 7 months

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Grid MS-DOS 3.3

by cclist＠sydex.com

If anyone else needs MS-DOS 3.3 for the Grid PC, I've put it up at http://www.sydex.com/temp/griddos.zip. Two self-extracting 720K diskette image files and Grid PCMASTER and PCSLAVE data transfer programs. Note that this version of MS-DOS includes enhancements for the Grid PC. I'll leave it up until Friday. Cheers, Chuck

18 years, 7 months

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My reply - Re: OLD Computer Magazines to go

by FJGJR1＠aol.com

Dave, Thanks for replying to my other email. I am preparing a detailed reply, but have been busy with some other high priority projects. Overall, you seem to be the best source for and to send to such magazines! I am developing a list of sites related to Kaypros and other older computers I have found and will post it on several websites when I get it done. Those are areas to explore, but you probably know of most of them already. Some of these sites may be good candidates for such magazines. It is a shame all this cannot be saved by someone or some organization, but you just cannot save everything. Once they are gone, you cannot get them back. All the best! Frank **************Start the year off right. Easy ways to stay in shape. http://body.aol.com/fitness/winter-exercise?NCID=aolcmp00300000002489

18 years, 7 months

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Dead IBM PC 5150

by cclist＠sydex.com

On Tuesday 22 January 2008 22:53:42 Chris M wrote: > what examples could you give as a not so conventional > 8088 board? The console control in the Ruffatti pipe organ at St. Mary's Cathedral in San Francisco? (I don't recall exactly--could be an 8086). Cheers, Chuck

18 years, 7 months

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Subject: Re: div by 10 on Z80 was RE: Reading Polymorphic

by cclist＠sydex.com

> Date: Mon, 21 Jan 2008 18:30:10 -0800 > From: dwight elvey <dkelvey at hotmail.com> > I think the restore operation will cause a carry meaning I need > to clear it here with something like: > > ora a ; or other carry clearing instruction I don't think so--let's consider a simple case, using 8 bits and -10. -10 = 0xf6 Our code looks like: add -10 to dividend skip next instruction if carryout subtract -10 from divident The question is "what is the value of the carry bit here?" Let's try some sample values. 0 + 0xF6 = 0xF6, no carry, subtract 0xF6 = 0, no carry/borrow 9 + 0xF6 = 0xFF, no carry, subtract 0xF6 = 9, no carry/borrow 10 + 0xF6 = 0x00, carry; skip the subtract 11 + 0xF6 = 0x01, carry; skip the subtract So the "ora a" to clear the carry shouldn't be required. Saves a few more cycles. For those porting this method to other platforms, be aware that the 6502/PIC subtract works differently than the x80; the carry bit represents "not borrow" instead of "borrow". The same algorithm can be implemented nearly as efficiently on the 8085 by using the "undocumented" instructions, as it includes a double-precision subtract (as well as a 16-bit arithmetic right shift) as a 1-byte instruction. Note that the BC pair must be used in place of DE to use this instruction. It might be possible to implement the algorithm efficiently on the 8080 by letting BC = -DE and using an ADD HL,BC instead of a SBC HL,DE. One is left without a loop counter register however--but then one could "prime" the A register with a 1 and iterate until the 1 migrates to the sign bit of A, then mask it out as part of the exit code. Cheers, Chuck

18 years, 7 months

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the PAL

by chrism3667＠yahoo.com

16L8ACN. This is the PAL aboard the Acculogic sIDE-1/16 XT-IDE controller I mentioned. Someone asked :) ____________________________________________________________________________________ Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs

18 years, 7 months

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Dead IBM PC 5150 motherboard - help troubleshooting

by daviderhart＠oldzonian.com

> >You should indeed have activity on the address lines, take another look as the >machine comes up, they should be toggling, even briefly. Could be that data >lines are stuck, and/or it is getting a halt somewhere. Another trick would >be connect a 1k to +5, and touch it to the reset line, you should see the >address lines blip a little then. If they never change state the processor is >dead or the mux buffers stuck (74245's?) . > >If you can build a little proto board to plug into the processor socket so you >can disconnect the address lines from the board, you should be able to 'free >run' the processor, and see activity. If those address lines dont toggle with >clock, power applied and reset low, I would suspect the processor. > >Randy > > >> Date: Tue, 22 Jan 2008 19:26:49 -0800 >> From: jwstephens at msm.umr.edu >> To: >> Subject: Re: Dead IBM PC 5150 motherboard - help troubleshooting >> >> Richard Beaudry wrote: >> > <snip> >> > 6) One thing that seems odd is that the ADxx (Address/Data) lines seem >> > "stuck". The scope does not show a waveform, and measuring with a meter >> > shows some lines right at +5VDC, some at about +4VDC and some at 0VDC. >> > Perhaps the processor is indeed HALTed??? >> > >> On several of the CPU's if you hold the processor reset, you actually >> get the reset vector address out. So on the 8088 8086 80186, you get >> FFF0 out. I don't know if 8088 has all 16 lines out, or is multiplexed, >> but on the 186 we could troubleshoot a board we had with a 186 on it for >> a support processor by setting a flipflop that held it reset, and then >> look at the lines with a scope. >> >> Jim > I did some troubleshooting of some of my 5150's using the "Sam's IBM PC Troubleshooting and Repair Guide Book". I noticed that there is one on eBay right now, item #190193033366. Might help. david.

18 years, 7 months

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youtube movie of making a vacuum triode.

by dkelvey＠hotmail.com

> From: rtellason at verizon.net > > On Wednesday 16 January 2008 08:21, Gordon JC Pearce wrote: >> On Friday 11 January 2008 15:36:05 dwight elvey wrote: >>> Although, a side subject, I like Jay, consider tube manufacture >>> relavent to some of my computing equipment. >>> Dwight >> >> I wonder how much computing equipment you could make from home-made >> triodes? >> >> Even a simple (say 4-bit) adder would be pretty impressive. > > In power as well. > > It'd be darn-near EMP-proof, though. :-) > Hi I thought I might clarify what equipment I had. First it is not digital, it is an analog computer. Each tube calculates to about two decimal digits making each tube worth about 20 or so TTL equivalent. Dwight _________________________________________________________________ Climb to the top of the charts!? Play the word scramble challenge with star power. http://club.live.com/star_shuffle.aspx?icid=starshuffle_wlmailtextlink_jan

18 years, 7 months

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HP/CHM software release update?

by Tim＠Rikers.org

I email Al, but did not yet get a reply. I realize folks are busy, so I thought I'd ask on the list for an update. Anyone know the status on releasing the older Hewlett Packard software that the agreement with the Computer History Museum allowed for? I know there are others on this list that have HP software, is it now legal to put that up someplace? or does it need a CHM stamp of some kind first? Is the agreement available for review? Side Note: I'll be in San Jose tomorrow (Jan 23) and plan to drop by the CHM in the afternoon. I'll hit some stores and scrounge sites in the area as well to see what I can find that I can't possibly take back on the plane with me. :) You suppose I could check an HP-2116 as luggage? 230lbs might be a bit over the weight limit, but it's close, right? :) -- Tim Riker - http://Rikers.org/ - TimR at Debian.org Embedded Linux Technologist - http://eLinux.org/ BZFlag maintainer - http://BZFlag.org/ - for fun!

18 years, 7 months

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Head alignment for legacy Sony FDD

by pludikar＠sympatico.ca

>Most heads have two sets of windings. One for trim erase and a second >for read/write. The organization varies but the trim is two pins or >have one pin in common with R/W and the RW is often a centertapped >winding (three wires) so you should see three connections of near >zero ohms and a pair that are also near zero OR 4 pins that show >near zero (common wire case). > >The test for alignment usually requires a calibration disk and scope >but I've done it by doing reads of a known good disk and "finding >the edges" and setting it for the middle. Track 00 is usually less >critical so if it happens when the head out and you can boot or read >the disk thats usually good enough. > >Allison Allison - thank you very much. I've measured the replacement heads and it looks like they may be damaged. There are 5 connections to each head - on the upper head, 3 connections measure zero, and on the bottom head, 4 connections measure zero. The bottom head is consistent with another head (damaged) I have. I know that the replacement heads were able to read data, but caused the tracks to erase when writing, so I still would expect to be able to use them. The major question I have, though, is how do you change the position of the head to calibrate it? On the MPF-52W-30 (sorry I inadvertently gave wrong number last time) there's a variable pot RV101 and 2 pins to IC101 (CXD1007B) associated with X-adj and X-reset. Other than setting the position of Track 00, these look like the only options available to move the heads a fraction of a step. I'd be grateful for any thoughts or suggestions. Peter

18 years, 7 months

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Free Sun Enterprise 450 server and A-1000 RAID, London UK

by lproven＠gmail.com

Anybody want a free Sun? I know the chap offering this personally, as it happens... - LP ---------- Forwarded message ---------- From: Roger Burton West <roger+freecycle at firedrake.org> Date: 22 Jan 2008 14:03 Subject: [FreeCycleLondon] OFFERED Sun Enterprise 450 server and A-1000 RAID, E13 To: FreecycleLondon at yahoogroups.com This is not capable of being used as a normal PC. It's a _large_ Sun server dating from around 1999 (model introduced in 1997). Four 400MHz UltraSparc-II processors, 4GB RAM, no discs on board but the A-1000 RAID unit has about 100GB in it. No monitor or keyboard. Solaris 8 installed, but a licence to run it is up to you (or just throw on Linux or a more recent Solaris). This is a big and heavy machine - 58cm high, 45cm wide, 65cm deep. It'll fit in an estate car or a van, but I wouldn't want to try it in a normal saloon. Loading or unloading is a job for at least two energetic people; I'll help you at this end. This is a very nice piece of kit, but I just don't have room for it and I'd like it out of my life as soon as possible... Roger -- Liam Proven ? Profile: http://www.linkedin.com/in/liamproven Email: lproven at cix.co.uk ? GMail/GoogleTalk/Orkut: lproven at gmail.com Tel: +44 20-8685-0498 ? Cell: +44 7939-087884 ? Fax: + 44 870-9151419 AOL/AIM/iChat: liamproven at aol.com ? MSN/Messenger: lproven at hotmail.com Yahoo: liamproven at yahoo.co.uk ? Skype: liamproven ? ICQ: 73187508

18 years, 7 months

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random unloved things

by dgriffi＠cs.csubak.edu

I have some stuff that's free for shipping: Three 10base-FL AUI-to-fiber transceivers One ISA SCSI card with DB25 connector. It's a PEL 1600 and carries an Adaptec AIX-63600 chip. -- David Griffith dgriffi at cs.csubak.edu

18 years, 7 months

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DEC/VG Datasystem/System Industries/Western Dynex

by jaspat＠netmagic.net

Jay, I was trying to locate the name of the owner/founder of Western Digital and came across your note re System Industries disk controller and Western Dynex drive. I was the VP of Engineering at System Industries >from 1973 to 1979. The 3040 and 3051 were disk controllers we developed during that time. As I recall the 3051 was a 3040 with ECC added - could be wrong. I am still in touch with some of the engineers from those days who may be able to answer specific question. Let me know. Jim Patterson mail4jlpatterson at yahoo.com

18 years, 7 months

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Head alignment for legacy Sony FDD

by dm561＠torfree.net

-----------Original Message: Date: Mon, 21 Jan 2008 20:47:21 -0500 From: "Peter" <pludikar at sympatico.ca> Subject: RE: Head alignment for legacy Sony FDD > 4 shorted together ('measuer 0') and one unconencted one would be what I > expect. > The uncconected one will be at one end of the head edge connector > fingers. On the damaged head, which _other_ one is unconnected ? On the damaged head, three fingers at one end show shorted. I guess that means: 3) Other end of the R/W coil, 4) Centre tap of R/W and 5) Erase Are probably okay. Finger 2) shows o/c - this would be consistent with the fact that before I managed to fry the drive, the FDD could read data but on writing I lost all data (ie everything was erased) >> there's a variable pot RV101 and 2 pins to IC101 >> (CXD1007B) associated with X-adj and X-reset > Are these related to head alignment? I must say I am rather suprised. > Normally you physically move the head stepper motor slightly. There doesn't appear to be a physical way of moving the heads - I was speculating/hoping that RV101 and the 2 X related pins may have something to do with fine adjustment - but I have no real idea. The heads are mounted on a diecast bracket with locating holes. There are corresponding centring pins on the main diecast body and there's no discernable movement when the two are mated. I rigged up a small Shugart type interface board with manual switches that allowed me to exercise the main drive control (drive select, motor on, step direction, step etc.). The control logic on the FDD stops the head from stepping in the down direction once the track 0 sensor is activated. So my one of my thoughts is that the track 0 sensor actually defines the fine head position, but I don't know for sure. Any thoughts or suggestions? -Peter -----------Reply: The track 0 sensor defines the track numbers, i.e. which track to start at. Adjusting where those tracks actually are on the disk is usually done by rotating the stepper motor; AFAIK there's no way to do that with any non- mechanical adjustment. I'd leave that as a last resort though; within reason, neither should affect the drive's ability to write to a *blank* disk and read those disks, and alignment and track 0 are probably not your issue. m

18 years, 7 months

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altair turnkey with internal drives

by evan＠snarc.net

Just remembered -- Pertec. -----Original Message----- From: "Evan" <evan at snarc.net> Subj: Re: altair turnkey with internal drives Date: Tue Jan 22, 2008 1:37 am Size: 716 bytes To: "General Discussion: On-Topic and Off-Topic Posts"<cctalk at classiccmp.org> Maybe some form of the Attache? I forget who made it ... might've been a company with a 'P' in the name that bought MITS? (I'm not at a computer to look it up right now.) -----Original Message----- From: David Griffith <dgriffi at cs.csubak.edu> Subj: altair turnkey with internal drives Date: Tue Jan 22, 2008 12:59 am Size: 345 bytes To: cctalk at classiccmp.org Has anyone here heard of an Altair 8800 turnkey with internal floppy drives? I found one in the estate in Pasadena I'm liquidating. -- 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?

18 years, 7 months

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altair turnkey with internal drives

by evan＠snarc.net

Maybe some form of the Attache? I forget who made it ... might've been a company with a 'P' in the name that bought MITS? (I'm not at a computer to look it up right now.) -----Original Message----- From: David Griffith <dgriffi at cs.csubak.edu> Subj: altair turnkey with internal drives Date: Tue Jan 22, 2008 12:59 am Size: 345 bytes To: cctalk at classiccmp.org Has anyone here heard of an Altair 8800 turnkey with internal floppy drives? I found one in the estate in Pasadena I'm liquidating. -- 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?

18 years, 7 months

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altair turnkey with internal drives

by dgriffi＠cs.csubak.edu

Has anyone here heard of an Altair 8800 turnkey with internal floppy drives? I found one in the estate in Pasadena I'm liquidating. -- 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?

18 years, 7 months

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Lot of 176 PDP-11/DEC Boards

by root＠parse.com

Hello, I'm wondering if anyone here is interested in purchasing the following lot of boards (I count 176) -- the vast majority of these are PDP-11 cards. I'd rather get rid of them in one lot than eBay them individually and deal with the hassles. This inventory is to the best of my knowledge, I would of course physically verify inventory before we finalized anything. I am located in Kanata, Ontario, Canada, K2M 1C5 for shipping, and I can do Canada Post, UPS, or Fedex (Ground or Express). I am entertaining offers until the end of the month or so; please email me directly. Cheers, -RK 4 M105 Address Selector 2 M234 KE11-A Registers 1 M7071 Waveform Generator 3 M7104 RK05 Disk Controller 1 (data buffer retgister and status) 3 M7105 RK05 Disk Controller 2 (major registers) 3 M7106 RK05 Disk Controller 3 (control module) 1 M7227 Plotter Control 2 M7228 REAL TIME PROGRAMMABLE CLOCK 1 M7263 UNIBUS CPU Module 2 M7264 LSI 11 CPU 1 M7265 KD11E PDP-11/34 Data Path 1 M7266 KD11E PDP-11/34 Control 1 M7270 KD11 1 M7516 DELQA Ethernet Adaptor 1 M7700 Dec Pak Index and Sector 5 M7705 Drive Control Logic 5 M7706 Interface Timing 6 M7707 Servo Control 6 M7708 Track Position Detector / PLO 1 M7710 Print Sequencer 1 M7711 Control Logic A 1 M7712 Control Logic ? (Blotted out, guess "B") 1 M7713 LCV 1 M7714 ? 1 M7715 Line Feed Control 1 M7716 HS50 Motor Translator 2 M7717 Motor Control 1 M7726 Floppy Disk Controller 1 M7727 Read/Write Control 5 M7729 RK06 SERVO ANALOG 1 M7744 RX-02 Floppy Disk Controller 1 M7745 RX-02 R/W Control 1 M780 KL11 U Teletype transmitter & receiver for KL11, 110 baud 2 M7800YA ASYNC TRANSMITTER & RCVR, WITHOUT EIA CHIPS,CURRE 1 M781 PC-11 Control 2 M7810 PC-11 Interface 2 M782 Interrupt Control 4 M7821 Interrupt Control 2 M783 Unibus Drivers 2 M784 Unibus Receivers 1 M7843 DR-11 2 M7846 RX11 Unibus Interface 7 M7847 MS11 (One of these is missing the voltage regulator (TO-3 package)) 4 M7850 Parity Module (2) 8 M7856 DL11-W,SLU/RTC OPTION 2 M7859 KY11-LB Programmer's Console 7 M7860 DR11-C = M786 + M105 + M7821 3 M7867 DVP 11-DA 1 M7895YA 48 (5V Optical Isolated) Channel Input DSS11 3 M7940 Serial Line Unit 4 M7941 16-bit Parallel Line Unit (DRV11) 8 M7944 4K RAM 3 M7946 RXV11 LSI 11 Interface 1 M7949 LAV-11 1 M7950 DRV11-B 1 M7952 Programmable Realtime Clock 1 M7955 MSV11-C LSI MOS Memory (4x16xIntel2104) 1 M796 Unibus Master Control 1 M798 UNIBUS driver 1 M7992 TXM UNIBUS CONTROL & CRC 1 M8012 Boot-Terminator and Diagnostic ROM Module 1 M8013 RLV-11 Disk Control 1 M8014 RLV-11 Bus Control 1 M8029 RXV21,Q-BUS RX02 INTERFACE,DO 2 M8043 DLV11J 4 Serial Line Unit 2 M8044DB 32k x 16 MOS Memory (M8045 PCB) 1 M8044DF 32k x 16 MOS Memory (M8045 PCB) 2 M8047 MXV 11 A 2 M8186 KDF11-AC DUAL HEIGHT CPU,Q-BU 3 M8192 DUAL HEIGHT CPU BRD (KDJ11-A) 1 M8256 RX211, UNIBUS RX02 INTERFACE 1 M8264 NO SACK Timeout Module 1 M8265 KD11E-A PDP-11/34A Data Path 1 M8266 KD11E-A PDP-11/34A Control 1 M827 KE11-A Clock & States 1 M8403 4 SLU 1 M8916 Logic and Write Board 1 M8931 Slave Clock and Motion Delay 1 M9001YC Gen Purpose Card 4 M9016 RK06 Cabling Bd. 1 M9301YA Bootstrap 2 M9301YF PDP11 Unibus Terminator/Bootstrap 1 M9302 11/04 UNIBUS TERMINATOR,FAR E -- Robert Krten, PARSE Software Devices, http://www.parse.com/resume.html

18 years, 7 months

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Looking for a PC 5150 Keyboard

by richard.beaudry＠gmail.com

Hello all, I have an IBM 5150 PC in need of a new keyboard .... Willing to pay some $$, but hopefully not too much! :-) If anyone has one, can you please let me know how much you want for it? Also, please quote shipping to 01473. Thanks! Rich B.

18 years, 7 months

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DEC Flip-Chip transistor cross?

by bnansel＠bigpond.net.au

I've Googled till I'm blue, but I haven't been able to find it. What would be a good cross for a DEC 3639 PNP transistor? Or, failing that, what are the specs for this transistor? -Bobby

18 years, 7 months

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Head alignment for legacy Sony FDD

by pludikar＠sympatico.ca

Hi, I've been trying to create a working Sony MPF50W (as found in the HP1650B logic analyser) from 2 damaged units. One unit had a fried board and the other unit had physically damaged heads. I moved the heads and track 0 sensor from the fried board to the other board and I need to do 2 things: a) confirm that the "new" heads are actually working and b) realign the track 0 sensor. I'm reasonably sure that the heads are okay, they show continuity on some of the pins, but I'm not 100% certain that is what I should be expecting. I can't find any obvious sources of information on where to probe to see useful signals from the heads or find any procedure to align the sensor. I have Tony Duel's diagrams of the HP9114 from hpmuseum.net . Any suggestions on where to find this information or how go about this would be really appreciated. Many thanks Peter

18 years, 7 months

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Teletype 43 manual

by erzzf＠tiscalinet.it

Hi, I am looking for the teletype model 43 user manual and cable pinouts. Would you be so kind to help me? Thanks, Ernest

18 years, 7 months

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Backing up TK50s (was: VMS 6.2 or older install media needed.)

by dave06a＠dunfield.com

> I'm not sure about the legal situation, but I think it would be worth > making a copy on some other media before the TK50s become unreadable. > > Regards > > Rob A timely discussion... Last week I received a total 4 TK50 drives, and a box containing 15 TK50 cartridge tapes. Of the four drives, one is a 1/2 height SCSI drive that is contained in a "low flat" DEC box (like the Microvax 3100). The other three are full-height TK50s, one of which is installed in a "cubish" (like the MicroVAX-2000) DEC box with a SCSI controller. The box is labled "TK50Z". I do know that this last drive was used quite recently. Of the 15 tapes, 8 of them appear to be original distribution media, and are "factory labled": AQ-FP13C-BN 03-Mar-87 MICROVMS V4.4 FULL BIN TK50 (C) 1986 DIGITAL EQUIP. CORP. AQ-FY80B-BN 03-Mar-87 MICROVMS V4.4 BIN TK50 MANDATORY UPD (C) 1986 DIGITAL EQUIP. CORP. AQ-JG62A-BN 03-Mar-87 MICROVMS V4.5 BIN TK50 (C) 1986 DIGITAL EQUIP. CORP. AQ-FP59C-BN 31-Mar-87 VMS LIC KEY BIN TK50 (C) 1986 DIGITAL EQUIP CORP. AQ-FP86J-BN W0035602 VAX FORTRAN 5.2 BIN TK50 FORT052,DEBUGMP050 (C) 1989 DIGITAL EQUIP. CORP. AQ-FP86E-BN 18-Feb-87 VAX FORTRAN 4.6 BIN TK50 FORT046 FORT (C) 1987 DIGITAL EQUIP. CORP. WIN/TCP Release 3.1 For MicroVAX VMS Computers License # 9074-IP _______ SID # ____________________ VD9962003 REV E uVAX TS11 DRIVER (C)1986 EMULEX The remaining tapes are mostly unlabled, although there are a few with handwritten labels: PSCA_E07042 Pathworks V4.2 Patch VAX/VMS 5.4-1 S/A BACKUP VMS V4.6 Q's: 1) Are any these titles already backed up somewhere? Are they worth backing up? (I assume everything requires licenses - I don't have the machine the VMS LIC tape was issued for). 2) What is the best way to backup these tapes to a more permanent media? Can they be read into binary files, and if so, can anything be done with those files? Presumably, as long as the tape blocks were archived, one could write a SCSI tape emulator if one really had to - or does such a thing already exist?) I have available: - Vaxstation 4000 VLC running VMS 5.5 - Vaxserver 3100 running OpenVMS 7.2 - Vaxstation 3100 running NetBSD All have SCSI ports. I relatively green at VMS from a system administration viewpoint (used it as a user lots in years gone by). I've never mounted or used tapes, but with a bit of guidance I'm willing to try and recover these if anyone has interest in their content. 3) What is "MICROVMS" - Is this just VMS (for a uVAX)? Dave -- dave06a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.classiccmp.org/dunfield/index.html

18 years, 7 months

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Bells on terminals (was: Re: YouTube videos of ASR33, etc.)

by tsw-cc＠johana.com

The discussion of bells on terminals reminded me of a weird experience. I had built up a terminal using a Qume printing mechanism (Sprint 4 interface) and added a keyboard and UART to make it complete. The printer didn't have a "bell" so I had to make one. In looking around for a nice tone to use, I found the one from the baud rate generator (MC14411). Since I was using an ASCII sequence, I had little use for the 134.5 rate (it is used for IBM 2741's) so I picked it up and with the use of a (couple?) one-shot, I made it into the beep. It was 16x the rate, so the tone was 2153.3Hz (see the data sheet). It worked quite nicely, and was pleasant sounding enough. Both control-G's and I were happy. Then the terminal was hooked up to an acoustic modem. While this isn't bad in itself, the astute among us will note that the tone for the bell is very near the center of the passband (2025-2225Hz) of the originate modems detector. So, every time someone sent a control-G to the terminal ALL sorts of weird things happened. Needless to say, I changed the wire to a different tap on the MC14411 baud rate generator chip. Yes, hardware can have unexpected bugs. Somewhere I still have this terminal. Daisywheel printers were fun to play with. I have the schematics somewhere if anyone needs info. -- Sorry, No signature at the moment. ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ

18 years, 7 months

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Backing up TK50s (was: VMS 6.2 or older install media needed.)

by aek＠bitsavers.org

Q's: 1) Are any these titles already backed up somewhere? -- many of them have been. The license PAKs are less common 2) What is the best way to backup these tapes to a more permanent media? -- I use Eric Smith's tape copy program http://www.brouhaha.com/~eric/software/tapeutils/ which generates .tap images on a Linux box using a TZ30. TZ30's are handy because the head is easily disassembled to clean; something you do a LOT reading TK50's from the mid-80's 3) What is "MICROVMS" - Is this just VMS (for a uVAX)? -- correct. somewhat stripped down version of same.

18 years, 7 months

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PDP 11 rescue.

by silvercreekvalley＠yahoo.com

Thanks for the replies. I've sent emails off list. Ian. ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ

18 years, 7 months

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NEC component description/datasheet

by bear＠typewritten.org

I'm trying to identify a couple of devices. Google is leaving me cold. Part numbers: NEC B975 (also has "L 96" marking) and NEC D1309 ("K 98", like the former). Both are TO-220 package. Can anyone help? Thanks! ok bear

18 years, 7 months

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Reading Polymorphic double density double sided disk.

by cclist＠sydex.com

Date: Fri, 18 Jan 2008 18:20:45 -0800 From: dwight elvey <dkelvey at hotmail.com> > For this, I need a little help. Since the 8 inch drives were 32 sectored, > calculating tracks from a disk offset number was easy. 5.25 disk with 10 > sectored will require something different. Is there an easy way to to > separate track from sector using Z80 code? Dwight Do you mean "is there an easy way to divide by 10?". If so, yes: 0.100x = x/16+x/32+x/256+x/4096+x/8192 to about 0.04 percent (4 parts in 10,000). Truncate the series if you need less accuracy. Ask if you need Z80 code. Cheers, Chuck

18 years, 7 months

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YouTube videos of vintage PDP-11/40, ASR-33, VT05, etc

by wacarder＠earthlink.net

>> I never knew that an ASR-33 had a bell like an old typewriter to >> indicate that your near the end of the line. Funny! The computers >> probably had a special microphone to hear it when printing a directory >> listing :-) > >I though the 'end of line' trigger for the bell was actually an option, >but that all Model 33s (RO, KSR, ASR) had the bell which was mechanically >triggered by a ^G character. >Oh yes, the VT50 series of DEC terminals have a little relay on the logic >board. It'spulsed to geenrate the keyclick and sent a square wave signal >to generate the 'bell' which sounds rather like a 'raspberry'. >-tony Maybe I need to make a video of the VT52 with the ^G bell sound. It is a strange sound. We used to write programs on the PDP-11 back in the 70s to "ring the bell" under certain conditions (winning a game, etc.). Note on my videos that the VT05 (DEC's early video terminal) also buzzes at the end of the line on long lines. Ashley

18 years, 7 months

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DEC Flip-Chip transistor cross?

by djg＠pdp8.net

> I've Googled till I'm blue, but I haven't been able to find it. What > would be a good cross for a DEC 3639 PNP transistor? Or, failing > that, what are the specs for this transistor? > 2N3639. My cross here. It doesn't seem to be picked up by the search engines for some reason. http://www.pdp8online.com/pdp8docs/decsub.txt

18 years, 7 months

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PDP-11 backplanes

by legalize＠xmission.com

Thanks everyone who contributed to the PDP-11 backplane discussion that was a side-thread on the PDP-11/70 board set discussion. I really had no idea that the backplane in a PDP-11 machine was essentially a board interconnect and not a "bus" in the typical sense. Now I understand what's geeky interesting about PDP-11s much more than I did before. Before that discussion, I was under the impression that they were all just typical shared address/data busses on those backplanes. My PDP-11/03 is Q-bus and its more like that than the PDP-11s that are not the VLSI versions. Thinking about it, it makes much more sense because the CPU is divided among a large number of boards and having them all sit on a common bus would be quite damaging to the performance of the CPU. So I'm guessing the way you figure out how these various CPUs are implemented using the boards is to look at the schematics and infer the connections on the backplane from those? -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

18 years, 7 months

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Supply voltage for 2N2/256-BSCP

by bnansel＠bigpond.net.au

OK, I'm building the bit-serial ALU for my 2N2/256 project. Though it sounds exceedingly elementary, one design variable I haven't been able to figure out is what supply voltage I should use. Does anybody know why the 7400-series TTL used +5V for Vcc? I've looked at the equivalent circuits for TTL and LSTTL. Maybe I'm missing something, but it's not immediately obvious to me why such circuits couldn't operate on, say, 4.5V or 6V. I understand the need for good regulation to maintain noise margin, but why in 1964 did Texas Instruments chose 5V in particular for TTL? Was it just an arbitrary choice, or is there a deeper issue? -Bobby

18 years, 7 months

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PDP-8 Teletype wiring question

by charlesmorris＠hughes.net

Wayne (Teletypeparts at aol.com) posted this on Greenkeys a few days back, but so far there have been no responses. I don't have my DEC manual collection handy and my 8/A has a different console connector. I'm sure that someone here knows the pinout, or where to find that schematic diagram or manual page (isn't it a W076 card)? Please let him (or the list) know... thanks Charles >I am looking for the simple wiring diagram to connect a 33 ASR to a PDP 8. I >have the 6 wire cable with the flat molex connector that goes to the PDP 8. >The other end is just wire ends. I know that wires 2 go to 33's receive and 2 >to 33's send, the other 2 to the tape reader control, but not which ones. My >color pairs are black/white black/red black/green if that is >any help. But if I knew the molex pin layout, I could trace them back to the >right connection on the 33. > >Thanks, >Wayne.

18 years, 7 months

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: Divide 10 bits by 10.

by cclist＠sydex.com

> Date: Sat, 19 Jan 2008 13:01:25 -0800 > From: dwight elvey <dkelvey at hotmail.com> > I'm not sure how effective that would be in Z80 code. It looks > like I'd at least need to do 32 bit coding to keep track of things. > I'd still need to calculate the remainder when done( I need both ). > The maximum sector index would be 800 decimal. Ah, then it's easy: ;* Divide 10 bits by 10. ; --------------------- ; ; Input in (HL) ; ; Quotient in (A), remainder in (L). ; Div10by10: ld de,(10 shl 6) ; divisor ld bc,0701h ; iteration count + 1 for xor xor a ; quotient Dtbt2: xor c ; assume set sbc hl,de ; subtract jr nc,Dbt4 ; if no carryout add hl,de ; add back xor c ; clear the bit Dbt4: rr d ; (carry is clear) rr e ; shift divisor add a,a ; shift quotient djnz dbt2 ; loop rra ; correct quotient ret ; a = quotient, l = remainder That will do it for values of a divident up to 1023. The algorithm can be extended somewhat by shifting the value of 10 left more places and increasing the number of iterations. I haven't tested it out on real hardware, but it should work. I've also got a divide 32-bits by 10 along the same line, if you're interested. It's fairly deterministic in terms of cycles; i.e., there's not a lot of difference in timing between a dividends of 0 and 799. Cheers, Chuck

18 years, 7 months

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VMS 6.2 or older install media needed.

by pat＠computer-refuge.org

It looks like in order to get VMS running on my 11/780, I'll need to find install media for an older version than what I have now. VMS 6.2 seems to be the newest version that will run. Either a CD image or tape image should work; CD image is preferred. Pat -- Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

18 years, 7 months

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VAX 11/780 diagnostics needed

by Gary＠realtimecomp.com

> On Sunday 20 January 2008 00:13, Patrick Finnegan wrote: > > I also would like to find the diagnostics for my 11/780. Either an > > IMD image of the RX01 or the actual files off the floppy would work > > best. > > I guess I can add the names of the ones I'm looking for: > > EVKAA Hardcore Instruction Test > ESKAB - ESKAM Microdiagnostics > ESXBA Bus Interaction Diagnostic > ESXBB VAX System Diagnostic > ESCAA Unibus Adapter Diagnostic > > Those should give me a good start into figuring out what's wrong, > hopefully. > Pat, Around 4 years or so ago, I sent Megan Gentry an almost complete set of 11/780 Diags on RX01 with the thought she would make them available. (I don't have any Vaxen.) You might check with her. I still have a spreadsheet of what disks I sent to her if you're interested in that. Gary

18 years, 7 months

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VAX 11/780 diagnostics needed

by pat＠computer-refuge.org

I also would like to find the diagnostics for my 11/780. Either an IMD image of the RX01 or the actual files off the floppy would work best. Thanks! Pat -- Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

18 years, 7 months

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VT01 (yes, 01) manuals?

by djg＠pdp8.net

>Are there any pictures around of the 601 or 611? >(was one of them a rectangular storage scope with an "erase" button?) >-brad > There are now. Hadn't realized that my vintage computer festival east 2007 pictures weren't online. http://www.pdp8.net/shows/vcfe07/pics/DSCF0038.shtml

18 years, 7 months

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Interesting search on Flickr (really it is on topic)

by evan＠snarc.net

Interdata / PE / Concurrent - which I think recently was bought by yet another company - is only a few miles away from the museum where we hold VCF East. Haven't picked a date yet for 2008, but if there's interest then we can probably get a lecture from our contact there. They donated a bunch of hardware to us. -----Original Message----- From: jim s <jwstephens at msm.umr.edu> Subj: Interesting search on Flickr (really it is on topic) Date: Sun Jan 20, 2008 7:37 am Size: 638 bytes To: "'cctalk at classiccmp.org'" <cctalk at classiccmp.org> I didn't realize I had a lot of time to kill tonight and put in "interdata" into flickr.com's search. It hits photos taken at a 2005 reunion which apparently was for Interdata, Perkin Elmer, and Concurrent ex employees. Probably from someone on this list, though the name didn't ring a bell. I won't post it here for privacy's sake in case the people who are mentioned would like not to be spammed. There are some nice photos of vintage equipment in the pile, which leads to other photo collections ... I have seen others mention lists for Dec equipment as well, but had not seen Interdata mentioned or searched for. Jim

18 years, 7 months

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Looking for old issues of Datamation, late 60's with Fairchild/SEL Advertisement

by aek＠bitsavers.org

> Somewhere around '68 there was an Ad by Fairchild semiconductor showing >a SEL minicomputer. I've updated http://bitsavers.org/pdf/sel with a bunch more manuals, and some Datamation SEL ads >from 1965 and 1967. I didn't see any Fairchild ads in 1968 or 69 showing a SEL machine.

18 years, 7 months

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Quirky computer collectors?

by jfoust＠threedee.com

I received this inquiry via another mailing list. I think it's legit. They're coming to the USA looking for "quirky" people. Might there be a classic computer collector they should feature? - John From: Rebecca Rusz Sent: Thursday, January 17, 2008 7:06 AM To: jzd at cvctv.org Subject: Att: extraordinary people Im Rebecca Rusz and I work with research for a swedish TV show called "the 100 most extraordinary people". We are producing the 6th season now, this time in America. The team consists of our two TV hosts Philip and Fredrik, a segment producer nad a photographer. They travel across the states meeting offbeat/quirky people in order to find americas most extraordinary person. My hope is that they will travel to Illinois at the end of January beginning of february, meeting people. Why Im contacting you is that I know that public access tv have a lot of quirky people, so Im wondering if you could help me digging up some people for us? We need the people who are quirky IRL and not just in front of the camera. Thank you in advance. If you want, leave your direct number and I can call you back to discuss some more. Looking forward hearing from you soon. Rebecca Rusz Research

18 years, 7 months

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Interesting search on Flickr (really it is on topic)

by jwstephens＠msm.umr.edu

I didn't realize I had a lot of time to kill tonight and put in "interdata" into flickr.com's search. It hits photos taken at a 2005 reunion which apparently was for Interdata, Perkin Elmer, and Concurrent ex employees. Probably from someone on this list, though the name didn't ring a bell. I won't post it here for privacy's sake in case the people who are mentioned would like not to be spammed. There are some nice photos of vintage equipment in the pile, which leads to other photo collections ... I have seen others mention lists for Dec equipment as well, but had not seen Interdata mentioned or searched for. Jim

18 years, 7 months

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Reading Polymorphic double density double sided disk

by dm561＠torfree.net

----------Original Message: Date: Sat, 19 Jan 2008 21:31:40 -0800 From: dwight elvey <dkelvey at hotmail.com> Subject: RE: Reading Polymorphic double density double sided disk > From: dm561 at torfree.net > > Date: Fri, 18 Jan 2008 18:20:45 -0800 > From: dwight elvey > Subject: Reading Polymorphic double density double sided disk. > > >>Is there an easy way to separate track from sector using Z80 code? >>Dwight > > ---------- > Might be easier in hardware with a monostable or two; if you're interested, > the Vector Graphic 10 sector HS Micropolis FDC manual on Howard's site > might be a useful read (schematics, timing diagrams, etc.): > > http://www.hartetechnologies.com/manuals/Vector%20Graphics/ > Vector_Micropolis_Disk_Controller_Tech_Manual.pdf > Hi Mike I already have a index, sector seporator. I built it with a 7438, 7414 and 2 555's. It works fine. One could use a single 556 but 555s are easier to find. What I mean is that the disk has index into the disk as 0 to 799 sectors. The disk is 10 sectors so one needs to divide this index by 10 to get the track number and the remainder is the sector number. The original code handle a 32 sectored disk. Because 32 is a power of 2, doing the calculations were much easier. Divide by 10 is not as easy. See my next post. If anyone wants a schematic of my index, sector pulse seporator, I can scan it and send it out. Dwight -----------Reply: Oops; careless reading on my part; I'd read "separate *index* from sector," instead of "track." Probably because I've been playing with the opposite, generating HS sector pulses from the index, also with 555s... mike

18 years, 7 months

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SC/MP

by ajwills＠paradise.net.nz

In case anyone is interested ;-), I have moved my echo of Sipke de Wal's old website (xgistor.ath.cx) to http://www.xgistor-echo.mydyn.net (I had hosted it at xgistor-echo.ath.cx for two years but they seemed to want people to pay after two years free dns routing). (for those who hadn't seen it - He had a big collection of datasheets, emulators etc, and some stuff about SC/MP processor and TI-59 calculator that I haven't seen elsewhere) -- Tony (no, not *that* Tony, another one :-)

18 years, 7 months

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are IBM RS/6000 40-bit 72-pin SIMMS ECC standard?

by compoobah＠valleyimplants.com

I have some 16MB IBM "40-bit" memory modules out of an RS/6000 (the 7012/370 or 7030/3CT compatible type). Roy's looking for some ECC SIMMS for a RAID controller. Does anyone know if these are standard ECC or proprietary? I know they are a different pinout than 32 or 36- bit 72-pin SIMMs. I've heard proprietary, same as the HP-9000 memory modules (very hard to believe looking at the ones that go in my C180), and standard ECC SIMMS - and they can't all be right.

18 years, 7 months

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Reading Polymorphic double density double sided disk

by dm561＠torfree.net

Date: Fri, 18 Jan 2008 18:20:45 -0800 From: dwight elvey <dkelvey at hotmail.com> Subject: Reading Polymorphic double density double sided disk. <snip> >Is there an easy way to separate track from sector using Z80 code? >Dwight ---------- Might be easier in hardware with a monostable or two; if you're interested, the Vector Graphic 10 sector HS Micropolis FDC manual on Howard's site might be a useful read (schematics, timing diagrams, etc.): http://www.hartetechnologies.com/manuals/Vector%20Graphics/ Vector_Micropolis_Disk_Controller_Tech_Manual.pdf mike

18 years, 7 months

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Disk formatting programs

by rcini＠optonline.net

All: I?ve completed the rehab and reconstruction of a CompuPro Disk 1 system for my IMSAI, creating a new system master from scratch. I?ll have a Web page about it up shortly. Anyway, I only have a simple disk formatting program that?s built into the monitor ROM. I?ve heard that some specific versions of CP/M have formatting programs but I can?t locate the source for one that?s appropriate for the Disk 1 controller (which is based on the 8272 VLSI). I can make the ROM version into a simple COM file, but I thought I?d poll the group before building it myself. Does anyone have the source code or a pointer to one? Thanks. Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://highgate.comm.sfu.ca/~rcini/classiccmp

18 years, 7 months

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*Brand New* Sega/Yeno F.S.

by chrism3667＠yahoo.com

I have 2 I've acquired recently. I only want to sell one. 150$ + shipping. look here: http://old-computers.com/museum/computer.asp?st=1&c=1096 ____________________________________________________________________________________ Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs

18 years, 7 months

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PDP 11 rescue.

by silvercreekvalley＠yahoo.com

Hi, I'm trying to rescue/restore a PDP 11/34A. The basic CPU looks to be in a good state, its been stored well. What I'd like to do is make up a small 19" rack of some kind (was this the DEC 'corporate' rack) or a regular rack if I cant find that, and add a suitable 11/34A compatible disk drive. I have a suitable VT. The 11/34A has a good selection of tape and disk interface cards so an RL02 or similar would probably work fine. Does anyone have anything available for sale or trade in the UK preferably. I can collect of course. I have plenty of PDP QBUS spares for trade if that's of interest - just no disks or racks. Thanks! Ian. ____________________________________________________________________________________ Looking for last minute shopping deals? Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping

18 years, 7 months

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Head alignment for legacy Sony FDD

by ajp166＠bellatlantic.net

> >Subject: Head alignment for legacy Sony FDD > From: "Peter" <pludikar at sympatico.ca> > Date: Sat, 19 Jan 2008 08:54:15 -0500 > To: <cctech at classiccmp.org> > >Hi, >I've been trying to create a working Sony MPF50W (as found in the HP1650B >logic analyser) from 2 damaged units. One unit had a fried board and the >other unit had physically damaged heads. I moved the heads and track 0 >sensor from the fried board to the other board and I need to do 2 things: a) >confirm that the "new" heads are actually working and b) realign the track 0 >sensor. I'm reasonably sure that the heads are okay, they show continuity >on some of the pins, but I'm not 100% certain that is what I should be >expecting. I can't find any obvious sources of information on where to >probe to see useful signals from the heads or find any procedure to align >the sensor. I have Tony Duel's diagrams of the HP9114 from hpmuseum.net . >Any suggestions on where to find this information or how go about this would >be really appreciated. > >Many thanks >Peter Most heads have two sets of windings. One for trim erase and a second for read/write. The organization varies but the trim is two pins or have one pin in common with R/W and the RW is often a centertapped winding (three wires) so you should see three connections of near zero ohms and a pair that are also near zero OR 4 pins that show near zero (common wire case). The test for alignment usually requires a calibration disk and scope but I've done it by doing reads of a known good disk and "finding the edges" and setting it for the middle. Track 00 is usually less critical so if it happens when the head out and you can boot or read the disk thats usually good enough. Allison

18 years, 7 months

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N* HRAM 64K schematics, Parallel Port Schematics, and ZDOS info scans

by brain＠jbrain.com

I was finally able to scan a bunch of HRAM 64, Parallel Port for N* schematics and some ZDOS information into PDF today. As I no longer have a N*, I was wondering if someone here does N* and wants to own this technical information. Jim -- Jim Brain, Brain Innovations (X) brain at jbrain.com Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times! Home: http://www.jbrain.com

18 years, 7 months

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HP 9845 Microprocessors

by accutron＠woh.rr.com

I'm trying to nail down a few bits of information regarding the various hybrid microprocessors contained in the earlier versions of the HP 9845. I recently purchased a large lot of 9845 boards, looks like most of one machine plus the PPU from a second machine. All told, I have four hybrid microprocessors. Two are the 107-pin AEC-variant 5061-3001 processor, one on a revision-A PPU card and one on a revision-B PPU card. The other two are both mounted on a single card, which is presumably a pre-bitslice LPU. Of the two processors on this board, one is a 5061-3010, the other a 5061-3011. From what I understand, the -3010 is the original hybrid used in the 9825, and I read something somewhere that lead me to believe the -3011 is a microcode variant of the standard -3010. Are both of these processors part of the LPU? Most sources refer to the 9845 having two processors, the PPU and the LPU, and I haven't found any that say the LPU itself actually consists of two processors. Is the -3011 just a microcode variant of the -3010? Also, are there any microcode variations between the -3001 on a revision-A PPU card and one on a revison-B PPU card? Regards, Micah Mabelitini

18 years, 7 months

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VLSI of classic architectures (was Re: 11/70 board set on e-bay. . .)

by jam＠magic.com

> On 15/01/2008 17:37, James A. Markevitch wrote: > >> Chuckles at the typo.Is the PDP-8 the only classic architecure from the mid > >> 1960's that was made with VLSI components. > > > > IBM 360 (still being made today) > > Is it? The 360 itself is not, but the architecture is, and in multi-GHz parts. > > PDP-11 (LSI-11) > > Definitely not mid 1960s. The first PDP-11 appeared in 1970, and LSI-11 > came out in 1975! Well, the architecture was conceived in April 1969, I believe :-). Guess that's not quite mid 1960's. James Markevitch

18 years, 7 months

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copying a GAL/PAL

by chrism3667＠yahoo.com

can someone provide the specifics? I keep getting badgered LOL ever since I announced I own an XT-IDE card. The one I have is pretty simple, just some OTS logic, but for the PAL (or is it a GAL - damn wish I had a GAL-PAL LOLOLOLOLOL). Therefore I need to have a way to duplicate such, so at least I can provide a path for those that want such a card. Of course this will involved desoldering. Not that big a deal, I feel I can lay the component side in a tray filled with cool water (with even a fish pump to course fluid past the pins) and go to town. If I don't need to remove the chip, please let me know. Gracias Amigos! Then again if anyone can provide a known working schematic/plan for such a card, that would be all the better. ____________________________________________________________________________________ Looking for last minute shopping deals? Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping

18 years, 7 months

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Fw: Big Iron (was VLSI of classic architectures)

by mike＠brickfieldspark.org

> > That sounds like a really great project; I've found the website and it > looks interesting. I've always wanted to do something like that with a > mainframe but of course it's hard to find one and find a place to put > it. This kind of thing really inspires me to try and form some sort of > vintage/retro computing club at my university... just gotta find some > space! > Do you have that website url. Mike > > Message: 6 > Date: Thu, 17 Jan 2008 12:26:58 -0800 > From: "John Floren" <slawmaster at gmail.com> > Subject: Re: Big Iron (was VLSI of classic architectures) > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Message-ID: > <7d3530220801171226m5a21f15fp45bd29f75ffe60e5 at mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > On Jan 17, 2008 11:51 AM, Roger Holmes <roger.holmes at microspot.co.uk> > wrote: >> >> >

18 years, 7 months

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MOMS Autograft4

by grant＠stockly.com

I traded about 15-20 hours of linux programming and consulting for two sight unseen computers, a complete Autograft system and an Osborne Executive 1 with manuals and software. Has anyone ever heard of an Autograft system? When I try to turn it on it fails. The hard drive grunts and then it sounds like its releasing a relay or solenoid. I plugged it into a regular desktop power supply and it does the same thing Then the access LED blinks morse code at me. Is there any way I can get it spinning to recover the data? What do you guys recommend? It was frozen last night but its warm now. It was manufactured in 1983. From what I can tell it has: 186 processor 512k RAM 20MB (or possibly 50MB) winchester 512x480 13" RGB monitor for graphics (8 "brilliant" colors the docs say) Wyse terminal for text Autocad 1.4 from Autodesk for CP/M 86 24x36" plotter 11x11 12 button digitizer (a tablet) And there is a receipt for $19,000 in the binder. : ) Grant

18 years, 7 months

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40M drive for postage

by rtellason＠verizon.net

>From a private email: > >> D3142 Disk Drive P/N 134-500558-531 and I think I looked that up once > >> and it came back as a 40 meg drive. Has a 17 connectors for some kinda > >> plug in one place and 10 more farther over with about a 3/8 gap between > >> the two groups. Oh, well, hell. Here is a pic attached. > > > > Those connectors are marked as 34 and 20 pin, which means either MFM or > > RLL, depending. I have some of that old stuff around, but don't have any > > near-term plans to use any of it. Dunno anybody else who does, > > either. I can forward a snip of that info to the classic computers list > > and see if anybody wants it, though. Want anything for it? > > Nah, just postage if anyone can use it. I never will. I have the pic here if anybody wants to see it. Can any of you guys use this thing? If so let me know offlist and I'll put you in touch... -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a critter that can be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin

18 years, 7 months

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FTGH: SPARCstation 2 HDD on original bracket

by listmailgoeshere＠gmail.com

Hi list, I have here a part number 370-1327-04, which is a 207MB Maxtor 50pin SCSI disk. It's mounted on the right bracket to go in an SS2 - I'm guessing this is probably the same for the 1 and 1+, but I don't know. Is anyone interested in this drive, or even just the bracket, before I pitch it? Usual deal - I'll ship to anywhere as long as you pay the cost. Ed.

18 years, 7 months

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SGI Onyx R10K on eBay UK

by james＠machineroom.info

Hi all, I just spotted an R10K Onyx on eBay UK. It's not of any interest to me (had 2 before!) but thought someone here may want to care for it. Item number is 110215756310 Cheers, James

18 years, 7 months

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Big Iron (was VLSI of classic architectures)

by roger.holmes＠microspot.co.uk

>> Current custodian of the University of London machine, having >> bought the >> 200,000 pound machine for 150 pounds in 1976. > > Still a 200,000 pound machine, regardless of the price. > That was big iron back then. :) How hard is to keep and get spares > for that system? I bought a machine which I stripped for spares and also the previous owners had got most of the parts from the factory when they had cleared their parts store. Some SES light bulbs are still available from classic car parts stores, and wedge lamps were used in old telephone exchanges which sometimes come up on eBay, I even got some 17volt ones a while back, and some are still available new from RS components and they even make LED equivalents at a price, though they're the wrong shade of white. The rarer transistors sometimes come up on eBay too. The commonest (Mullard GET871/GET872/A/B/C) are difficult to get, though I passed on a half dozen on eBay where the blue plastic had turned brown - looked like they had blown up or got hot when de-soldered. Fortunately I have enough for the foreseeable future. Diodes (mainly OA5 and OA10) did have sky high prices and now are unavailable but I've got thousands. Of course resistors, capacitors and inductors are still available, though they do not look the same, and I still have to find out why the resistors have double green bands where there should be a gold band for the tolerance. I have been lucky so far with the electrolytics, not one has blown up, despite being 46 years old. They bought the best components available back then, and hand built them and tested every soldered joint and marked it with lacquer to show it had been tested. The biggest electrolytics are bigger than a hand grenade, so I hope they never fail! There two types of valves in the tape drives. I got about a hundred of one type with the machine, and not used one, the other type I've picked up in the States on eBay, they are used in old CNC spark eroders apparently. I am rapidly getting though my stock of 'rubber' pinch rollers for the mag tape drives, which go hard and crack up. The same thing happens with the rubber-like roller in the punch card reader, but that is about 4 inch diameter, so it is currently wrapped in four layers of motorcycle inner tube, though its not very effective and I may have to mould a new one in synthetic rubber. Most of the mechanical parts are simply unavailable, but I have a lathe and a milling machine. I bought some flat belts for driving the tape capstan rollers, they are commonly used as knitting machine drive belts apparently. V belts for the drums and line printer are fortunately standard car parts. Line printer ribbons will be a problem (when I get the printer working again). I have a box of a dozen or more but if they have now dried up by now I will be amazed. There used to be re-inking firms around, or maybe I could just buy the ink and get my hands dirty. Should not be unsurmountable, even if the fabric has failed, its just (nylon?) cloth, should be able to get something to do the job. I've a good stock of blank punched cards and paper tape (5 and 8 track) and enough mag tapes to keep me going for a long time. Fan fold paper is probably still available new and when I see any cheap locally on eBay I buy it up. The logic indicator tubes (DM170 or something like that) never seem to fail. The microswitches (particularly the start switch which takes a hammering when single stepping a program) are in short supply, though I don't see too much of a problem in fitting modern sub-micro versions and extending the actuating arms. Multi-segment rotary switches just need a squirt of switch cleaner/lubricant from time to time. One problem, and it sounds stupid, is the rotary switch knobs. They are made of plastic and they fit on a 1/4 inch shaft with a flat section, nothing unusual there. There is a boss on the back which fits into a recess in the formica covered blockboard (yes the computer has wood in it) front panel. These bosses break off. The shafts are not long enough for most modern knobs, and anyway I want to keep it looking original. Because of the recess, it is not possible to use knobs with a screw. I am thinking about making some aluminium knobs which I can glue or screw into the original front parts of the knobs. The problem is making the flat part which fits the flat of the shaft. I suppose I could make them of brass and then put sufficient soft solder in the hole so that I can shove it onto the shaft so that it won't come off easily. I guess there must be a tool for making D-shaped holes somewhere, or maybe there should be some spring steel in there somehow. The relay contacts need cleaning sometimes, though they are platinum so are pretty reliable. There are no edge connectors in the computer itself, every one of the 4000 PCBs is wire wrapped in, which means there are about 50,000 test points. The racks in the computer are also wire wrapped together, no plugs and sockets. This all improves reliability and I think accounts for the machine's survival (well that and my eccentricity). The tape drives have some plugs and sockets and edge connectors, but have so far been reasonably reliable as well. Castors were a nightmare. The tyres on the ones on the (800 lb) tape drives crack up. The ones on the computer have a flat top with a stud poking out. The stud has a washer and a nut and fit into an open ended slot with another nut on top. Any jolt and the stud bends. If I have to move anything heavy now, I remove the washer and first nut and make up a three inch piece of wood the equivalent thickness to take their place, which spreads the load over a larger area instead of concentrating it on the stud. Fuses: small ones still available from Maplin for peanuts, large ones are NATO standard and cost silly money, so I drill the ends, empty out the sand and solder 10,15 or 20 amp domestic fuse wire into the old cartridges. Meters, so far very reliable apart from one where the needle would not go above a certain point, so I had to dismantle it and glue the glass back in which was what the needle was jamming on. I think that just about covers all the parts which go wrong. Roger Holmes

18 years, 7 months

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VLSI of classic architectures (was Re: 11/70 board set on e-bay. . .)

by roger.holmes＠microspot.co.uk

On 16 Jan, 2008, at 18:00, cctalk-request at classiccmp.org wrote: > > Message: 11 > Date: Tue, 15 Jan 2008 22:13:44 -0800 (PST) > From: "James A. Markevitch" <jam at magic.com> > Subject: Re: VLSI of classic architectures (was Re: 11/70 board set on > e-bay. . .) > To: cctalk at classiccmp.org > Message-ID: <200801160613.WAA26599 at magellan.magic.com> > >> On 15/01/2008 17:37, James A. Markevitch wrote: >>>> Chuckles at the typo.Is the PDP-8 the only classic architecure >>>> from the mid >>>> 1960's that was made with VLSI components. >>> >>> IBM 360 (still being made today) >> >> Is it? > > The 360 itself is not, but the architecture is, and in multi-GHz > parts. > >>> PDP-11 (LSI-11) >> >> Definitely not mid 1960s. The first PDP-11 appeared in 1970, and >> LSI-11 >> came out in 1975! > > Well, the architecture was conceived in April 1969, I believe :-). > Guess > that's not quite mid 1960's. It is not normal to consider conception dates, neither with computers nor babies. I don't go calling my ICT 1301 a late '50s computer just because it was conceived in 1959, nor because thats when some of the technical drawings date from. Its an early '60s machine because the first one shipped in 1962, and you could even argue about that as it was actually an extra prototype which the University of London pressed ICT into supplying because otherwise there would be no undergraduate intake in 1962 as they were committed to it, having had the computer on order for a LONG time. As the factory prototypes were refined, engineers would be sent out to also modify the university's machine. At a meeting of the Computer Conservation Society, the chap in charge of the software said it was the only computer which ICT/ICT ever shipped where the system software and libraries were ready before the first machine shipped. Most of it had been hand executed to verify it apart from the real time aspects, which had been the big hold up, particularly the routine which punched one card whilst reading six cards and printing one line. For months they had been travelling from London to Coventry every night to test the next amendment of version one and failing whilst some of the programmers had been putting together a version two in their spare time. One night they rang their manager, waking him in the early hours. They said they were not getting anywhere with version one, and asked for permission to try version two. This was grudgingly given as a sop to frustration. It worked first time, and version one was abandoned and at last all the software was ready. Roger Holmes. Current custodian of the University of London machine, having bought the 200,000 pound machine for 150 pounds in 1976.

18 years, 7 months

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Craigslist- MicroVAX, DECstation, etc.

by compoobah＠valleyimplants.com

On Jan 17, 2008, at 2:11 AM, Doc Shipley wrote: > There can't be too many people named Chris in Buffalo who > collect old > Unix gear and have an amazing array of install media and software for > them. If this is who I think it is, he's legit and very easy to deal > with. I've bought both equipment and media from him. Yes, it is him. He's also the one who sells PS/2->SGI {Indigo|Crimson| Onyx|Personal IRIS|Professional IRIS} keyboard adaptors.

18 years, 7 months

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IBM PS/2 Model 25

by filippo.santolin＠flyinformatica.it

Dear Sir, i would like to ask you the price for IBM 8530-021 and cost for shipping to italy. IBM 8530-021 computer still working?? Best Regards Filippo Fly Informatica snc tel. 0572 445340 fax 0572 448378 Le informazioni contenute nella presente comunicazione ed i relativi allegati possono essere riservati e sono comunque, destinati esclusivamente alle persone e agli Enti sopraindicati. La diffusione, distribuzione e/o copiatura del documento trasmesso da parte di qualsiasi soggetto diverso dal destinatario ? proibita, sia ai sensi dell'art. 616 c.p. che ai sensi del D.Lgs.n.196/2003. Se avete ricevuto questo messaggio per errore, vi preghiamo di distruggerlo e di informarci immediatamente per telefono allo 0572 445340 o inviando un messaggio di posta elettronica all'indirizzo: info at flyinformatica.it. In caso di ricezione mancata o incompleta, telefonare al numero 0572 445340.

18 years, 7 months

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Went down to the ETH today...

by jos.mar＠bluewin.ch

... and was rewarded with a gift of 3 very rare Honewell Bull diskcartidges, which will go a long way in keeping my Lilith running for a few more years. And even more importantly, I got loaned all technical infomation on the Lilith : circuit decription, schematics, microcode listings, you name it, it is there ! Expect scans shortly ! ( and they have a nice Cray on display in their basement ) However I do feel somewhat stupid now, having spend quite a bit of time reversing engineering my own Lilith.... Jos Dreesen

18 years, 7 months

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Vol 53, Issue 32 - "gummy" pinch roller problem

by mike＠brickfieldspark.org

One thing that has worked for mee in the past is to replace the "gummy" rubber with black adhesive lined heatshrink tubing. Measure the old roller diameter, remove old rubber down to metal part, carefuly shrink on a piece of new heatshrink. Oversize heatshring builds up thickness quickely, sizes close to the diameter do so more slowly. With *care* it can be turned to the correct diameter although not by much, you need to be close to finished size. I used adhesive lined for the first layer on the metal core, susequent layers stick to each other quite well. Mike > > Message: 19 > Date: Wed, 16 Jan 2008 22:03:35 +0900 > From: "David Vohs" <netsurfer_x1 at fastmailbox.net> > Subject: Ye old HP-85 "gummy" pinch roller problem. > To: cctalk at classiccmp.org > Message-ID: <1200488615.10086.1231544527 at webmail.messagingengine.com> > Content-Type: text/plain; charset="ISO-8859-1" > > Just wanted to pose the question to the group in regards to the gummy > pinch roller problem in the HP-85. > > Anyone know where I can find a commpatible, hard plasic pinch roller? > >

18 years, 7 months

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contemplating selling my Canon Cat

by chrism3667＠yahoo.com

very much strapped for cash. If you're interested, e-mail an offer off-list. I have to admit it's not going to go cheaply...snifful ____________________________________________________________________________________ Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs

18 years, 7 months

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FREE: Compaq Contura 4/25cx laptop

by silent700＠gmail.com

It powers on, doesn't see the internal hard drive (or there isn't on there,) 12mb, modem installed, floppy drive works, serial port works. Don't have the A/C adaptor but works off the Toshiba adaptor I had lying around. Not particularly classic, but it kills me to throw even this one out. So if anyone needs yet another serial terminal.... Free + shipping from 60074. -- j

18 years, 7 months

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VLSI of classic architectures (was Re: 11/70 board set on e-bay. . .)

by jam＠magic.com

> Chuckles at the typo.Is the PDP-8 the only classic architecure from the mid > 1960's that was made with VLSI components. IBM 360 (still being made today) Data General Nova (MicroNOVA) PDP-11 (LSI-11) Maybe HP 21xx (A series?) Just to name a few. James Markevitch

18 years, 7 months

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FOR SALE: TI-99/4A EXPANSION SYSTEM w/ SPEECH, RS232, TRIPLETECH

by mikedg63＠mybluelight.com

FOR SALE: TI-99/4A EXPANSION SYSTEM w/ SPEECH, RS232, TRIPLETECH Is this still for sale? Thanks _____________________________________________________________ Print your own high quality pictures with great photo paper! Click here! http://thirdpartyoffers.mybluelight.com/TGL2321/fc/Ioyw6i51vQRQR4EqfExwqG15…

18 years, 7 months

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Keybard repair help. Older terminals

by g-wright＠att.net

-------------- Original message from ard at p850ug1.demon.co.uk (Tony Duell): -------------- > > I know the design well. The contacts spring togethe, and are kept apart > by a plastic pin in the plunger when the key is not pressed. > > The keycap is a press-fit into the plunger, which means it slightly > stretches the latter. In time the plunger cracks anyway, even if you > don'y drop anything on it. > > The other prolem is fitting new contacts. At one time you could buy > individual contacts and more importantly a tool to hold them and press > them in place without damaging them. Said tool was (at least) sold by > Radio Shack Nationl Parts Centre and HP (I have part numbers for both), > but AFAIK it's now unavailale, It's possilble to use long-nose pliers > carefully, but it's very easy to mangle the contacts. > > > > > What I would like to find is a doner type of system that does not have > > any value so I can rob the middle piece.. (typewiter) ??? > > I've seen this type of keyswitch on (at least) the following : > > DEC VT50 series > DEC VT100 series > TRS-80 Model 1 (early version only) > TI 99/4a > HP80 series (HP85, etc) > HP9915 keyboard (very rare!) > HP98203 (small keyboard for the HP9816) > HP2623 (IIRC) graphics terminal > > Unfortunatley none of those are exactly common. When I repaired my 9816, > I was lucky enough to find a 'spare' VT52 keyboard PCB i nthe junk box, > given to me with a load of other DEC spares, which provided contacts, > plungers, even keycaps. > > -tony > Yes that is what I'm finding . The donors have more value than the pieces I'm working on. Tony, Do you have one of these tools ??? and/or what it looks like - Jerry Jerry wright g-wright at att.net

18 years, 7 months

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Macintosh Color Classics

by dbetz＠xlisper.com

I have a couple of Macintosh Color Classics I'd like to find a home for. As far as I know, they both work. One has been upgraded with a faster system board and one has a IIe card in it. I also have the cable and external 5.25" drive to go with the IIe card. Both machines come with a keyboard and mouse. The catch is, I'm not really interested in packing and shipping them. I'd first like to see if anyone is willing to come pick them up. I'm in Bedford, NH 03110 and would be willing to drive a bit to meet someone if that is necessary. Anyone interested? David Betz

18 years, 7 months

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WD1001 MFM controller wanted

by jos.mar＠bluewin.ch

Looking for an Western Digital WD1001 MFM controller card , preferably working. It is an 8X305 based, very early controller card . I do not know how rare they were, but they are bound to be rare now. Jos Dreesen

18 years, 7 months

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Supply voltage for 2N2/256-BSCP

by cclist＠sydex.com

From: dwight elvey <dkelvey at hotmail.com> > More voltage and it would have used more power. Less > voltage and it would have been too slow. In the DTL days, > unlike today, the major factor in speed was the transistors > them selves and not the interconnect. Today, the interconnect > dominates and the smaller one can make the transistors, > the shorter the interconnects. I've got a brief Moto app note here from the late 60's that essentially says that 7400/5400 TTL could be run from Vcc as high as +7, so long as V(IH) was not allowed to go any higher than +5. The term "exceptional circumstances" is used, meaning, I suppose, where better noise immunity or more speed is required. Since this is contemporary with 5400/7400 SSI, I don't know if it could be carried over to more recent MSI/LSI TTL circuits. RTL had a much wider supply range, IIRC. FWIW, Chuck

18 years, 7 months

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Ye old HP-85 "gummy" pinch roller problem.

by netsurfer_x1＠fastmailbox.net

Just wanted to pose the question to the group in regards to the gummy pinch roller problem in the HP-85. Anyone know where I can find a commpatible, hard plasic pinch roller?

18 years, 7 months

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Craigslist- MicroVAX, DECstation, etc.

by compoobah＠valleyimplants.com

Not me, but saw this mentioned elsewhere (from New York): http://buffalo.craigslist.org/sys/540478438.html > Date: 2008-01-15, 9:04PM EST > > > > I'm clearing out some of my collection of older Unix-based systems, > and at this point, I just want to be rid of them. I'm offering them > for $20 each. Any less than that, and I'll part them out, and > reclaim the gold. If you want more than $100 in gear, let me know, > and I'll work out a deal with you. > > Most of these systems all worked the last time I used them, and all > have CPU's, memory, and a disk. Some of the rest of them I never > got around to doing anything with, so I don't know for sure if they > have a disk. I also don't know for sure what the exact specs are -- > the model numbers don't really help, because I usually reconfigured > them when they arrived. Some of these systems take proprietary > keyboards and mice, which I may or may not have laying around. > Others (like Sun, for example) I have more keyboards than I know > what to do with. > > I do have ISOs of operating system installation CD's for most of > these systems, which I can burn onto DVD-R in trade for a bunch of > blanks. > > Here's a list of the machines that need homes: > > - DEC/Digital MicroVAX 2000; this one doesn't have a disk, so it'd > have to be net booted over a LAVc. > - Silicon Graphics Indy; I have two of these to move. > - DEC/Digital DEC 3000 Alpha workstation > - DEC/Digital Personal DECstation 5000/25 > - Sun SPARCstation 2; not sure if this one works anymore -- you can > have it for free > - Sun SPARCstation 4 > - Sun SPARCstation 5 > - HP B160L > - HP C240 > - IBM 43p > - Sun Ultra 10 > - Silicon Graphics Indigo2; a few Express graphics systems and a > couple Impact graphics systems. The R10k Max Impact with a lot of > memory is something I'd like to get $50 for. > > Non-workstation stuff that I want to move: > Chaparral Fibre Channel to SCSI bridge > Brocade Silkworm 2800 -- two carcasses, with one supply in each -- > one has the password set, and the other doesn't boot properly, and > I don't use Brocade, so I don't need them. > > I also have Fibre Channel and SCSI storage and accessories, which > would be more than the $20 each. I have 73GB SCSI drives in > UltraWide SCSI arrays, and I have 181GB FC drives in small > standalone enclosures. I do also have 1G/2G/4G Fibre Channel PCI > cards, cables, GBICs/SFPs, etc. If you need anything to do with FC/ > SCSI storage, let me know. > > Thanks, > Chris > > > > > * Location: North Tonawanda > * it's NOT ok to contact this poster with services or other > commercial interests >

18 years, 7 months

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Coleco Adam system available (Jason T)

by alanp＠snowmoose.com

> > >From: "Jason T" <silent700 at gmail.com> > > >>> From: Alan Perry <alanp at snowmoose.com> <alanp at snowmoose.com> >> >>> A friend of mine has a Coleco Adam (and bits to go with the system) that >>> he wants to get rid. I do not yet have the complete list of what he >>> has. Anyone here interested in it? It is located in Shelton, WA. It >>> sounded like it was free, but I need to confirm that. >> >> > >Any idea if he's willing to ship it? > I expect that he is going to ship it (at the expense of whoever gets it). My friend was quite surprised when I forwarded him e-mail from 4 people who were interested in it. alan

18 years, 7 months

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Supply voltage for 2N2/256-BSCP

by bnansel＠bigpond.net.au

> > Does anybody know why the 7400-series TTL used +5V for Vcc? I've > > ---snip--- > > To make them plug compatable with DTL. Next! > Dwight OK, if that's the case, then why 5V for DTL? -Bobby

18 years, 7 months

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Supply voltage for 2N2/256-BSCP

by ajp166＠bellatlantic.net

> >Subject: Supply voltage for 2N2/256-BSCP > From: Robert Nansel <bnansel at bigpond.net.au> > Date: Wed, 16 Jan 2008 21:24:59 +1030 > To: cctalk at classiccmp.org > >On Wed 16 Jan Brent Hilpert said: > >> ... >> I hope you're not looking to mimic TTL - you'll have trouble sourcing >> multi-emitter transistors in discrete form. (I know - it's outside >> your design >> constraint anyways.) More seriously, looking to TTL or standard DTL >> ICs for >> design would kind of chew up the transistor count very quickly. Is >> there a >> reason you're not looking to period/original discrete-component >> logic designs? > >I am using discrete diode-transistor logic; I'm just trying to >figure out what a sensible Vcc should be. I've seen discrete >transistor logic designs with Vcc voltages from 3.6V clear on up to >90V, plus and minus (and often both). I suspect the higher voltages >were more out of habit from vacuum tube days, but perhaps there were >other reasons. More in the realm of other reasons. Transistors of the day could not switch much current so I^2R ruled where higher voltage at the current they could switch was used to get enough power. This was balanced against device breakdown voltages. Other factors that are to be considered is higher voltages allow larger signal swings for better noise immunity at the cost of speed (R*C). >Since I'll ultimately run this whole thing from batteries, I would >naturally prefer to deal with 6V or 12V (or even 3V or 4V, depending >on the battery chemistry), less the <mumble> dropout voltage of my >regulator. Forget batteries. The voltage stability will be important and as you get enough powered elements you'll find that all those milliamps start to pile up to amps, potentially lots of them. I'd stick to 5V for interface to current parts where needed but you might find time to look at old machines and their design. One of the things done was -V to reverse bias transistors to help with stored charge for faster switching. The -V was in the range of -3 to -10V. The most recent of transistor machines like the PDP-8 (link-8 too as well as early DEC modules and the TX2 machine) would be an example to look at. FYI: the really ond machines used PNP transistors as the Germainium technology was better able to make those, that only means all the votages are "upside down" compared to what we currently expect. >So far I've been able to keep everything in the ALU data path to a >depth of two diode gates. I'm using the complementary outputs from >three flip-flops for true and inverted versions of the A-word and B- >word bit streams and Carry inputs to the adder. It takes more gates >this way, 25 diodes but no inverters, versus 12 diodes with two >inverters. Watch fanout, that is output of the FF being loaded with enough current sinks to inhibit operation or make for lousy noise immuunity. Many designs used enough inverters to avoid needing buffers, again a balanacing act. Allison

18 years, 7 months

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Supply voltage for 2N2/256-BSCP

by bnansel＠bigpond.net.au

On Wed 16 Jan Brent Hilpert said: > ... > I hope you're not looking to mimic TTL - you'll have trouble sourcing > multi-emitter transistors in discrete form. (I know - it's outside > your design > constraint anyways.) More seriously, looking to TTL or standard DTL > ICs for > design would kind of chew up the transistor count very quickly. Is > there a > reason you're not looking to period/original discrete-component > logic designs? I am using discrete diode-transistor logic; I'm just trying to figure out what a sensible Vcc should be. I've seen discrete transistor logic designs with Vcc voltages from 3.6V clear on up to 90V, plus and minus (and often both). I suspect the higher voltages were more out of habit from vacuum tube days, but perhaps there were other reasons. Since I'll ultimately run this whole thing from batteries, I would naturally prefer to deal with 6V or 12V (or even 3V or 4V, depending on the battery chemistry), less the <mumble> dropout voltage of my regulator. So far I've been able to keep everything in the ALU data path to a depth of two diode gates. I'm using the complementary outputs from three flip-flops for true and inverted versions of the A-word and B- word bit streams and Carry inputs to the adder. It takes more gates this way, 25 diodes but no inverters, versus 12 diodes with two inverters.

18 years, 7 months

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AS/400 a "VAX killer"?

by legalize＠xmission.com

In reading some stupid web site today that claimed to have a canonical list of "top 50 arguments of computing" (e-week? someplace I normally ignore), they had the "DEC vs. IBM" argument in which they claimed that AS/400 was created as a "VAX killer" by IBM. Is this really true? I never heard of an AS/400 described that way. They also had some weird ideas about DEC vs. IBM networking described in that argument, as if neither company supported TCP/IP until their proprietary networks (DECnet and SNA) were forced to relinquish ground to open protocols. OK, googling brings up the link. "Network World" is the culprit: <http://www.networkworld.com/news/2007/102607-arguments-dec-ibm.html?nwwpkg=…> -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

18 years, 7 months

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Odd DEC (?) item on e-bay. . .

by tiggerlasv＠aim.com

I've not seen these before, but then I live in the Q-bus world. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=120210769260 Are these some sort of serial I/O connectors for use with either top-edge connectors, or in a backplane ? Just curious. . . Tim ________________________________________________________________________ More new features than ever. Check out the new AIM(R) Mail ! - http://webmail.aim.com

18 years, 7 months

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The Wollongong Group

by aek＠bitsavers.org

>> > (As I've said before on the list) there was at least one third-party producing >> > a TCP/IP stack for VMS before DEC got around to it. >> >> CMU-IP from Carnegie Mellon? > > The implementation I was recalling was from the Wollongong Group (Univ. in > Australia) (WIN/TCP I believe). TWG was a Silicon Valley company.

18 years, 7 months

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