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

by pete＠dunnington.u-net.com

Does anyone have a circuit diagram for a DRI 7200 floppy? This is a double-sided 8" floppy drive. I have a pair of them in a Baydel box, and Drive 1 has faulty electronics (I've checked the cables, connectors, and jumpers, and switched the boards just to be sure). It won't read (it does seek, load heads, detect disk, etc). I'd like to fix it, but tracing out the circuit isn't my first wish. -- Pete Peter Turnbull Network Manager University of York

23 years, 6 months

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OT? Apple Stylewriter problems (update)

by pete＠dunnington.u-net.com

On Jan 21, 10:45, Mark Tapley wrote: > ..."heater?" IIRC, Pete said these transistors work up to 100 MHz and they > are being used to drive *heaters?* Does that mean the other 17 or so > connections to the print head carry the which-pixel information and > whatever (piezoelectric?) pulse it takes to actually send out the squirt of > ink? Oy. Or are there 8 heaters and one for the jet pulse, and the thin 17 > carry the jet-selection info? Maybe I am going to be be interested enough > to trace this whole circuit out. Or maybe I should just shred one of the > print heads to see what's inside it. The 100MHz just means it's possibly over-specced -- but probably not by much. The head travels at a fair speed over the paper and the dots are small, so you want the jets to turn on and off fairly fast; and you want a nice square wave (or at least fast rise and fall times) while you're doing it, not some ragged aproximation to a bent sine wave. I don't know much about inkjets, but isn't the very rapid and very localised heating part of what generates the jet? -- Pete Peter Turnbull Network Manager University of York

23 years, 6 months

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Electronics and Technology Cosmos International

by CLeyson＠aol.com

Today whilst picking up a copy of Wireless World I noticed a new publication. "Electronics and Technology Cosmos International" Editor Constantine Delenardo 196 High Road, Wood Green, London N22 8HH So what I here you say. Well, the January edition is 72 pages of electronics with no adverts, not even one. There is no mention of a publisher and Google turned up zip. Has anyone else seen this on the news stands ? Topics covered: Going from Dual to single supply op amp operation Low voltage logic Families and Mixed Voltage Interfacing Techniques. Part 1 Data Interface Standards. Part 1. Introduction to the Theory and Design of Audio Power Amplifiers. Part 1 Cache Memory for Computer Systems. Part 1 Charge Pumps Simplify Portable Designs Simplified Bipolar Transistor Models & how to use them It is very well written and provides a clear introduction to basic principles. Rather than practical articles it seems to be more of a reference book with a lot of worked examples. Definitely worth a read. Chris

23 years, 6 months

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How much?

by csmith＠amdocs.com

> -----Original Message----- > From: Dave McGuire [mailto:mcguire@neurotica.com] > I've got modern Alphas. Crays too. That's not the point. :) Crays? That would be nice. Anyone have an EL 92 they'd like to get rid of? ;) Regards, Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

23 years, 6 months

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OT? Apple Stylewriter problems (update)

by mtapley＠swri.edu

Toth asked: >Are there 3 indentations around the edges of the fasteners? If so, these >could be a type of Japanese fastener often found in mid '80s to early '90s >video game systems. Bits that fit those kinds of fasteners are available, >at about $1.50-$2 each, and they come in 2 different sizes. Hmmm - will look again. I was specifically looking for anything I could get purchase on to turn the things, though, and did not see it. --------------- Tony said: >Hnag on... I thought it was one printhead heater that was out. In which >case it's likely that 8 of the 9 transistors are still fine. Right ... but I don't know which one. I was hoping to end up unsoldering them all, and finding the bad one by the first-order test, then putting all but that one back and ordering a single replacement. In which case I might as well start off with just the four I couldn't get my VOM onto during the in-use testing I tried. I did not count on destroying components as I pulled them, however. Glad I only tried 4. ..."heater?" IIRC, Pete said these transistors work up to 100 MHz and they are being used to drive *heaters?* Does that mean the other 17 or so connections to the print head carry the which-pixel information and whatever (piezoelectric?) pulse it takes to actually send out the squirt of ink? Oy. Or are there 8 heaters and one for the jet pulse, and the thin 17 carry the jet-selection info? Maybe I am going to be be interested enough to trace this whole circuit out. Or maybe I should just shred one of the print heads to see what's inside it. >Do you know >if you tested one that was related to the dead row of pixels? No. I *thought* so, from the in-operation tests and locations on the ribbon-cable connector, but since I still have not got the PS working, I can't confirm that by trying to print again with the 4 transistors removed - which is the only way I'd believe at this point. BTW, would *that* toast anything? >It won't be. A diode junction is not an ohmic conductor, and there's no >reason why it should show the same 'resistance' under different test >conditions (such as changing the range on the VOM). Figured, which is why I put quotation marks around "resistance". >In the end it'll be to a +ve supply line, but there might be other >transistors or current sensing circuitry in the way. However, since this >is common to all pixels, it's not a problem (yet). 'cause I haven't tried to test or disassemble it (yet) >:-) >Probably resistors (read the numbers like you would the numbers on a >capacitor -- so 151 -> 15*10^1 = 150 Ohms, and so on). I'd expect a >resistor from base to emitter and another resistor from base to some kind >of open-collector output (maybe a discrete transistor, maybe a chip). I'll check, but that's consistent with what I've seen so far, I think. >The fault, of course, might be further back in the circuitry, so you >might have to trace out this array of components. More havoc to wreak... >Any depressions in those heads at all? Any way a tool could engage with them? I don't think so. I'll have one more look before I try the soldering iron (didn't get to it this weekend). >Oh, it can't be that complicated. After all, there are likely to be 9 >identical stages. I would conentrate on the base of the power >transistors. What connects there, what does it connect to. I don't see 9 identical groups of components anywhere else. There are several large DIP packages, one of which I'll bet I run into on the far side of the surface-mount things. >This 'surface mount array' : What does it contain? Any more transistors? >Any open-collector driver chips nearby? The only things I saw were the little (?) resistors described earlier. I didn't look at the chips nearby - I'll try that next chance I get. >Unlikely. The voltage is not going to damage parts of this printer, or >any other classic computer you're likely to be working on. OK, that's reassuring. ----------- And I have an offer of a replacement wall-wart and PCB coming from a very kind list member. Not an exact match PCB, which could lead to more fun still, but we'll see. - Mark

23 years, 6 months

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Sea Container Spelunking (Terminal Junkie Part Two)

by celigne＠tinyworld.co.uk

I was hunting around at work today for manuals for the Lynwood Alpha that I grabbed at the weekend. I was told to grab a torch and led to a group of six sea containers out the back of our building. It appears that we never really throw anything away -- it just gets put into sea containers. I half expected to find some ex-colleagues preserved in aspic. "Oh, John? No, he never _really_ left. No one ever does". Presumably at some point in the future we're intending to load the containers on board a cargo ship and dump our archives in mid Atlantic. Anyway, these sea containers contain a treasure trove of old equipment and manuals. It appears that we used to be into Texas Instruments 990 computers in a big way -- we've still got a bunch of manuals in the library, but it's a tiny fraction of the files stuffed away outside. I've a feeling the 990(s) have long since been scrapped, but everything else is in storage. I found what I thought was a calculator like my first school one, with red LEDs (a TI-30?), but it was actually a mini terminal, called a TM 990/301 (I think). Sadly, no sign of a manual for the Lynwood Alpha, but compensation came in the shape of operator's and user's manuals for the LSI ADM 3A, ADM 11 and manuals for the Digital Engineering Incorporated Retrographics card for the ADM 3A. Unfortunately, none of the LSI manuals answer the age-old question of what "ADM" stands for. It appears that circumstances are conspiring to make my web site no longer exclusively devoted to DEC terminals. If anyone wants a manual for the Data General Dasher D410 I mentioned yesterday, the PDF and TIFF are online at http://vt100.net/dg/. The User Manual for the LSI ADM 3A is online at http://vt100.net/lsi/ (proper pages to come later, blah, blah). Time to don a hard hat and dig deeper... - Paul

23 years, 6 months

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No subject

by m_asifmangel＠hotmail.com

An HTML attachment was scrubbed... URL: http://www.classiccmp.org/pipermail/cctalk/attachments/20020121/830fac7e/at…

23 years, 6 months

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VAXstation newbie

by csmith＠amdocs.com

> -----Original Message----- > From: pete(a)dunnington.u-net.com [mailto:pete@dunnington.u-net.com] > On Jan 21, 11:44, Adrian Graham wrote: > > > -----Original Message----- > > > From: David.Neal(a)ubsw.com [mailto:David.Neal@ubsw.com] > > > you're probably looking at TK tape. Versions varied, long > production > > > run, but the most usual was a 5.5, usually rev 2 or better. > > ISTR No VMS distro was available on floppy, the only VMS > floppies I can > > remember were boot disks for MicroVMS round V4.x. > I have (parts of) 5.2 on floppy. It's a big box, but I don't > think it will > help anyone, though, as (a) it's incomplete, and (b) they're proper > floppies, ie 8", not modern miniature imitations :-) Given a VMS machine with a floppy drive, though, you could put standalone backup, and the distribution stuff onto floppies with little problem. That pre-supposes somebody with a working VMS install who can write the floppies you need. I have a roommate who's got the VAXStation 3100 with the 3.5" floppy drive, and I think they're relatively common, though all the ones I have are without... so it's do-able. It would be much easier, though, for all concerned if you can plug something else into the VAX. A CD (provided it will do 512 byte blocks) is acceptable, as is a TK50, DDS-1, etc. You may have to find a strange scsi cable for the thing to use external SCSI devices. It's a 68-pin "honda" connector, but it's not wide SCSI, and normal wide SCSI connectors don't work. Expect to pay ~30 dollars US for the cable unless you get lucky. Regards, Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

23 years, 6 months

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ASUS ISA-486SI Motherboard BIOS

by pete＠dunnington.u-net.com

On Jan 21, 12:17, David C. Jenner wrote: > I have an ASUS ISA-486SI motherboard, Copyright 1992. > I have the manual for it. The manual does NOT describe > any sort of BIOS upgrade, such as reflashing it, like later > boards in my collection do. I've not seen any 486 of that era with flash. More likely a PROM. > The BIOS is not > Y2K compliant. It appears to work OK when I set the > current date/time, and when I turn it OFF/ON, it retains > the current date >2000 without problem. Is that a typo? If you can set dates after 1999 and it retains them, and gets leap years correct, what's the problem? My 1993 Phoenix BIOS (EPROM, not flash) is fine, for example. -- Pete Peter Turnbull Network Manager University of York

23 years, 6 months

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How do I startup this PDP10 with TOPS 10/20 ??

by healyzh＠aracnet.com

Your first stop should be my web site. http://www.aracnet.com/~healyzh/pdp10emu.html It has links to everything you need. For DEC emulation in general see: http://www.aracnet.com/~healyzh/decemu.html Zane > > This PDP10 simulator that is ;) > > I'm hacking on the simh ( http://simh.trailing-edge.com/ ) and have > the pdp10 module compiled and running a-ok. Also looking at the > PDP10 Software kit ( http://old-pdp-10.trailing-edge.com/ ) but I'm > rather clueless where to even begin. Everything in the TOPS-10 > table are *.tap tapes, one is tagged "BOOTABLE". I d/l that, attach > it to TU0 and boot TU0. Nothing happens but when I stop the sim > it reports: Simulation stopped, PC: 000000 (000000000011) > > Another one marked TOPS-10 7.03 KS Bootable tape I just tried, > with similar results. > > Any hints on where to start exploring or should I just give this up > as hopelessly impossible w/o a wall of orange books and years > of experience?? > > Thanks > > Chuck > cswiger(a)widomaker.com >

23 years, 6 months

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How do I startup this PDP10 with TOPS 10/20 ??

by cswiger＠widomaker.com

This PDP10 simulator that is ;) I'm hacking on the simh ( http://simh.trailing-edge.com/ ) and have the pdp10 module compiled and running a-ok. Also looking at the PDP10 Software kit ( http://old-pdp-10.trailing-edge.com/ ) but I'm rather clueless where to even begin. Everything in the TOPS-10 table are *.tap tapes, one is tagged "BOOTABLE". I d/l that, attach it to TU0 and boot TU0. Nothing happens but when I stop the sim it reports: Simulation stopped, PC: 000000 (000000000011) Another one marked TOPS-10 7.03 KS Bootable tape I just tried, with similar results. Any hints on where to start exploring or should I just give this up as hopelessly impossible w/o a wall of orange books and years of experience?? Thanks Chuck cswiger(a)widomaker.com

23 years, 6 months

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VAXstation newbie

by pete＠dunnington.u-net.com

On Jan 21, 11:44, Adrian Graham wrote: > > -----Original Message----- > > From: David.Neal(a)ubsw.com [mailto:David.Neal@ubsw.com] > > I highly doubt you can get the software on floppies, but I'm usually > > proved wrong, so best of luck. CD is the way to go but not all 3100's > > had SCSI as standard ( at least as an external option. Apart fromthat > > you're probably looking at TK tape. Versions varied, long production > > run, but the most usual was a 5.5, usually rev 2 or better. > > ISTR No VMS distro was available on floppy, the only VMS floppies I can > remember were boot disks for MicroVMS round V4.x. I have (parts of) 5.2 on floppy. It's a big box, but I don't think it will help anyone, though, as (a) it's incomplete, and (b) they're proper floppies, ie 8", not modern miniature imitations :-) -- Pete Peter Turnbull Network Manager University of York

23 years, 6 months

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New VAXARCHIVE mirror: http://vaxarchive.vax.org

by vaxzilla＠jarai.org

New VAXARCHIVE mirror: http://vaxarchive.vax.org This is a second mirror of Kees Stravers' original vaxarchive.org site (no longer operational). The primary mirror has been up and running at http://vaxarchive.sevensages.org for a number of years, but it's always nice to have more than one source for elusive yet indispensable information. The other mirrors, http://vaxarchive.decvax.org and http://vaxarchive.khubla.com, are no longer available. You will find that some of the VAXARCHIVE content is a bit dusty, and quite a few of the links which head off-site are dead. Still there's much useful information contained within, and oddly a lot of it isn't VAX specific. -brian.

23 years, 6 months

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ASUS ISA-486SI Motherboard BIOS

by djenner＠earthlink.net

I think this just makes the "10 year rule". I have an ASUS ISA-486SI motherboard, Copyright 1992. I have the manual for it. The manual does NOT describe any sort of BIOS upgrade, such as reflashing it, like later boards in my collection do. All the ASUS Web sites and a Google search reveal no BIOS upgrading information. Was this too early for BIOS reflashing? The BIOS is not Y2K compliant. It appears to work OK when I set the current date/time, and when I turn it OFF/ON, it retains the current date >2000 without problem. Anyone have any experience with this motherboard? It was my original 486 back in 1992, but I haven't used it for over two years. Dave -- David C. Jenner djenner(a)earthlink.net

23 years, 6 months

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How much?

by mcguire＠neurotica.com

On January 21, Christopher Smith wrote: > > I've got modern Alphas. Crays too. That's not the point. :) > > Crays? That would be nice. Anyone have an EL 92 they'd like to get rid of? ;) I've got an EL92...Not sure if I'd be willing to get rid of it though. Of course, money talks. :) -Dave -- Dave McGuire St. Petersburg, FL "Less talk. More synthohol." --Lt. Worf

23 years, 6 months

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Amdek Color-1 Plus service manual

by tothwolf＠concentric.net

Does anyone have a service manual for the Amdek Color-1 Plus monitor? I'm getting ready to rebuild one of these monitors, and would like to have a manual on hand if one is available. -Toth

23 years, 6 months

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VAXstation newbie

by David.Neal＠ubsw.com

Hi Al, I highly doubt you can get the software on floppies, but I'm usually proved wrong, so best of luck. CD is the way to go but not all 3100's had SCSI as standard ( at least as an external option. Apart fromthat you're probably looking at TK tape. Versions varied, long production run, but the most usual was a 5.5, usually rev 2 or better. I had mine hooked up to PC serial port running ( origianlly ) winterm, followed by a linux box too. Bonus of course being it you network it together you can have your DECWindows too, depends on how grunty your system is. Best of luck with it, give me a shout if you run into any issues ( mmm, need to dig VAXen out and play again ;-) ) Cheers Dave Visit our website at http://www.ubswarburg.com This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. E-mail transmission cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message which arise as a result of e-mail transmission. If verification is required please request a hard-copy version. This message is provided for informational purposes and should not be construed as a solicitation or offer to buy or sell any securities or related financial instruments.

23 years, 6 months

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VAXstation newbie

by Antonio.Carlini＠riverstonenet.com

Alan Pearson wrote: >Finding a VAX that's small enough for "Al's Toy Barn" hasn't been easy, they >don't seem to be that common here in the UK (UK classiccmpers correct me if >I'm wrong, and please point me in the right direction ;-)). I occasionally come across them via newsgroups; they also crop up on ebay. They aren't *that* hard to find. >The box I'm getting is just that - no monitor/keyboard/mouse etc - I've read >that you can use the printer port for the console so I'm planning using Correct. Flip up S3 at the back. if you have the original case style then the switch is not exposed externally and you have to remove the case to get to it. >emulator. I guess I need a null modem cable to hook the 3100 up to whatever >I'm using for the terminal, right? Yes. I forget if it's MMJ or DB25 but the details should be in the OpenVMS FAQ anyway. >There's no backup media for the OS - any ideas where I'd get VMS on >floppies? You jest :-) >(It has a floppy drive, no CD). Or do I need to hook up a CD? Hook up a CD and get a hobbyist licence. Then you can borrow media from anyone. >Also, does anyone know what version of VMS shipped with the 3100s? The first version of VMS to support the VS3100s was V5.1B. Antonio arcarlini(a)iee.org

23 years, 6 months

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

by MTPro＠aol.com

<<Do you have any more of these? I enjoyed the one I had, but a friend would like one. Thank you, P Manney >> Hi there, I do still have copies left and the offer still stands for any subscribers of the list. $4 covers the book with shipping by USPS Media Mail to anywhere in the US, international buyers will pay $2.50 plus actual shipping. If you've never checked out this book, grab a copy now, it's worth the read! Thanks for asking! Best, David David Greelish Classic Computing www.classiccomputing.com "classiccomputing" on eBay - ----- Original Message ----- From: <MTPro(a)aol.com> To: <classiccmp-digest(a)classiccmp.org> Sent: Saturday, October 27, 2001 10:32 AM Subject: Stan Veit's History of the PC Books - Blow Out - $4 Shipped! > I have a number of brand new copies I'd like to move out. This is a super > deal just for classiccmp subscribers. Please e-mail me! > For more info on the book, see: > http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1289515294 > Best, David > > David Greelish > Classic Computing > www.classiccomputing.com > "classiccomputing" on eBay

23 years, 6 months

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Fwd: FS: NeXT stuff

by doc＠mdrconsult.com

Thought the NeXT-heads might be interested. I could probably help with pickup & shipping, if needed. Doc From: Jon <jon(a)slurpee.org> Newsgroups: austin.forsale,dfw.forsale Subject: FS: NeXT stuff Date: Sun, 20 Jan 2002 14:52:06 -0600 I have 5 next cubes, 2 slabs (mono), 2 keyboards, and 1 monitor (dont know if it works). I have some other stuff too, so if you want we can kind of fish through the stuff and see what works. 1 of the cubes doesnt have anything in it, 3 are cubes, and one is a computer (all the cubes are upgraded computers... just for those of you who might be confused, the computer was the 68030 that came in the cube shaped case, and the cube was the 68040 that came out later but still in the same style case). I also have 4 printers (I can part with two of them), but need to make sure they work. I also have a set of openstep documents (I'll be getting the software soon). Most of the cubes have hd's, some dont, and some have magneto drives and some dont... so first come first serve. I'm asking 60 for the cubes, 50 for the computer, and 35 for the empty case. send an e-mail to jon(a)slurpee.org if you're interested, and let me know if you need any other next stuff as I find it often. Thanks, jon

23 years, 6 months

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Looking for a CR11 manual

by quapla＠xs4all.nl

Hello All, Is there someone on the list who can supply me with a photocopy of the wiring diagram of the cable used between the reader and the interface? I need to fabricate the cable. If you have some punched cards as well to spare that would be great! Thanks, Ed -- The Wanderer | Politici zijn gore oplichters. quapla(a)xs4all.nl | Europarlementariers: zakkenvullers http://www.xs4all.nl/~quapla | en neuspeuteraars. Unix Lives! M$ Windows is rommel! | Kilometerheffing : De overheid '97 TL1000S | weet waar je bent geweest!

23 years, 6 months

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OT?: Iomega auction in SF

by jfoust＠threedee.com

A "$12 million" auction of Iomega's old factory equipment. The preliminary manifest shows a nice assortment of test equipment... http://www.charynauctions.com/upcoming/iomega_home.htm - John

23 years, 6 months

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PDP-11 with real ADV11-C board still unhappy

by pete＠dunnington.u-net.com

On Jan 20, 14:52, Tom Leffingwell wrote: > > Thanks. I tried all that, and then I moved the system home. [...] > I decided to hook back > up the external hardware that talks to the DRV11 and DRV11-B. (I hadn't > attached it since I got home). Sure enough, it worked. I assume the > vector address on the DRV11 had something to do with it, but why it got > that little bit futher with nothing but hauling the equipment around still > bothers me. Anyway, hopefully it will stay that way. Well done! You've fixed it ;-) Seriously, it's often stuff like that which catches us out. On the positive side, you've learned a few things, and had a bit of fun (depending on your definition of fun). -- Pete Peter Turnbull Network Manager University of York

23 years, 6 months

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PDP-11 with real ADV11-C board still unhappy

by pete＠dunnington.u-net.com

On Jan 17, 0:36, Tom Leffingwell wrote: > > I finally managed to obtain an ADV11-C without parting with a > large sum of money, but unfortunately, it didn't solve my problem. The > system still hangs at the same point it did when I used a DZ to "fake" the > ADV11 by setting its CSR to 770400. If I remove the ADV11, the program > runs, but it is forced into its simulate mode because the missing > hardware. I set the vector to the default on the DRV11, DRV11-B, and > ADV11-C. I didn't check the serial module though. Could this be a vector > setting problem, or do I have the wrong symptoms? Is there anything I can > learn by halting the system when its hung and looking at addresses in > memory? Probably, but I'm not sure what :-) You could try halting it and see if i always halts in the same place(s). If so, it would be worth looking to see if you can figure out what instructions it executing at that point. It might be a WAIT or a polling loop. Also look at the vectors in low memory (from locations 0 to about 20), and the vectors for the devices you have in the system. They should point to somewhere in the program. > I did try doing a "770400/" and it returned 000000, with the > module out it gives a ?, so that seems good. 770402, the data buffer > returns 007777. Sounds like you have it set up correctly, at least as far as addressing is concerned. > Does anyone know what to try next? I'm running out of ideas. > The only difference between my system and the one I'm trying to replace is > that the backplane is 4 slot instead of 9, I don't have a BDV11-A like the > original had, and I have a DSD systems generic RX02, instead of the real > DEC M8029. Also, do the limit of backplane space, my modules are in a > slightly different order. The order of the modules shouldn't matter, though it's best to have CPU-memory-serial followed by whatever device needs highest priority response. I expect the DSD RX02 controller works just like a DEC one as far as addresses and interrupts are concerned, so that's unlikely to matter. The BDV11 is another story, though. It includes a line-time clock, and your system may need that. IIRC, it's controlled by a combination of a switch on the BDV11, a bit in a register on the BDV11, and the LTC switch on the front panel. All of those have to be enabled, and the BDV11 must be present, for the clock to run. I have seen systems that boot but then hang if the software needs a clock but it's not present or is disabled. -- Pete Peter Turnbull Network Manager University of York

23 years, 6 months

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Security bits and screws

by jfoust＠threedee.com

At 12:40 AM 1/20/2002 -0600, Tothwolf wrote: >On Sat, 19 Jan 2002, John Foust wrote: >> I've always wanted a bit set that will disassemble the >> McDonald's Happy Meal toys. They almost always have a >> screw with a triangular hole, perhaps rounded at the bottom. >> What are those called? Trilobe? > >That's fastener takes a tri-wing bit. They make about 5-7 different sizes >of them IIRC. Ah, that's the rub: I'd been expecting to see a security bit shaped like the triangular hole, but you're saying the tri-wing (with three vanes from the center) is the proper bit for those screws... - John

23 years, 6 months

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RT 6150 Docs (and mouse??)

by SUPRDAVE＠aol.com

In a message dated 1/20/2002 2:58:31 AM Eastern Standard Time, doc(a)mdrconsult.com writes: << Hi. Does anyone have pointers for detailed documentation? A mouse, maybe? And which operating system - AIX v2.2, BSD4.3, or AOS - do I want to run? I'm leaning toward AIX, mostly because I work with "modern" AIX, but I'm plenty willing to take suggestions. For that matter, what *is* AOS, anyway? I just found out that I got in first claim for a functional RT 6150. I can't pick it up till tomoroww afternoon, though.... The guy who's giving it away says he "has no boot disk, but it starts up just fine."!? He also thinks it has 3 drives and is maxed out on memory. It comes with a display and keyboard, but no docs and no mouse. I've been googling, and there are a lot of mentions of it, but no real information. >> The ez way to tell an RT mouse is that it will have 2 round buttons like eyes. There is an RT newsgroup that has ontopic postings every once in a while so you can ask there for questions. Did you get the desktop or tower form factor? Desktop can only have 1 drive AFAIK. 16meg is the max mem i believe. Mine has a MDA so I can run text only but am getting a Megapel for it soon. Not rare machines, but I've never seen any besides the one I have. I'd hate to pay shipping for it though, extremely heavy! -- Antique Computer Virtual Museum www.nothingtodo.org

23 years, 6 months

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RT 6150 Docs (and mouse??)

by doc＠mdrconsult.com

Hi. Does anyone have pointers for detailed documentation? A mouse, maybe? And which operating system - AIX v2.2, BSD4.3, or AOS - do I want to run? I'm leaning toward AIX, mostly because I work with "modern" AIX, but I'm plenty willing to take suggestions. For that matter, what *is* AOS, anyway? I just found out that I got in first claim for a functional RT 6150. I can't pick it up till tomoroww afternoon, though.... The guy who's giving it away says he "has no boot disk, but it starts up just fine."!? He also thinks it has 3 drives and is maxed out on memory. It comes with a display and keyboard, but no docs and no mouse. I've been googling, and there are a lot of mentions of it, but no real information. This is kind of a special score. I never used computers at all till late '95, and started building my own in '96. That spring, I went to pick up a video card from a guy who had an RT 6151, and it was the first time I really grasped that the world wasn't all Mac & PC. I've wanted one ever since. I guess all things come to those who lurk. Doc

23 years, 6 months

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How much?

by mcguire＠neurotica.com

On January 18, Julius Sridhar wrote: > > > How much would you pay for a VAX 7000-650? > > > > As much as I could afford to blow on it at the time. I'd love to have a VAX 7000. :) > > Well, the question's kinda moot, since I've decided not to sell it. Excellent! Now maybe I can get an account on it! 8-) (Just pickin' on you, Sridhar!) -Dave -- Dave McGuire St. Petersburg, FL "Less talk. More synthohol." --Lt. Worf

23 years, 6 months

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Collections vs. accumulations, was Re: How many collectors?

by dhquebbeman＠theestopinalgroup.com

> > > Does anyone know what sort of machine is in the car's > > > onboard controller? A few pictures I've found make them > > > look like PC104's. These machines are hitting zero value > > > quickly and may not last 10 years unless picked up now. > > > > What car? They don't all use the same controllers, you know... > > Want a fuel injection "brain" from a 1968 VW Squareback? Had Bosch come up with EFI already by 1968? Every VW (and Audi & MB, etc) of that vintage that I've seen used CIS, which was a purely mechanical system. I have seen a 1969 Audi Super 90 (wagon) that had an aftermarket Capacitative Discharge Ignition (CDI) System... by 1974, Audis had those as stock, while CIS was still 1 year off... My 1986 Audi 5000 CS Turbo Quattro uses a Motorola 6802-based controller... very simple to upgrade, too.... ;-) -dq

23 years, 6 months

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looking for DEC VR160 monitor

by mcguire＠neurotica.com

Hey folks. I'd like to find a DEC VR160 monitor (19" mono) at some point. Does anyone have one that they want to get rid of? -Dave -- Dave McGuire St. Petersburg, FL "Less talk. More synthohol." --Lt. Worf

23 years, 6 months

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OS/2 V3 and Memory

by healyzh＠aracnet.com

Stupid question. Is there some kind of memory limit in OS/2 Warp V3. For some reason the system I've got thinks it has 48MB, and unless I'm mistaken it has 192MB of RAM. Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh(a)aracnet.com (primary) | OpenVMS Enthusiast | | | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | PDP-10 Emulation and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |

23 years, 6 months

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Toshiba T3100/20

by mhstein＠canada.com

Good advice; check that the switch is set to PRT, and replace the battery; If you can't find (or afford) the correct replacement, AAA Alkalines will indeed work well, and even AA's will just fit. However, once properly configured, it should work even with a dead battery, at least until you turn it off again. Use F10 after you set the configuration, not F1. The hard disk should be set to 11 if it's the standard disk. Also, you may find it easier to just remove the keyboard to replace the battery; 3 screws under the front and a couple of tabs to release in the display latch compartment; remove the keyboard & the shield, and you'll find the battery behind the keyboard on the right. As Chris will confirm, you should remove the dead battery ASAP to avoid corrosion problems. Good luck; I've got a T3100 if I can help. mike -------------------Original Message-------------------- From: CLeyson(a)aol.com Subject: Re: Toshiba T3100/20 In a message dated 19/01/02 driess94(a)dolfijn.nl writes: > HEllo, I have bought a Toshiba T3100/20 but it won't start. Stefan, This may help, it applies to a Toshiba T3200SX so may be of some use. If there is a small switch located near the floppy drive, set it to 'B' or 'PRT'. This switch configures the parallel port for printer or external floppy drive. If it's set to 'A' the bios goes looking on the parallel port for the A drive. The machine should now boot from a DOS boot disk. Bios settings. If the T3100 is anything like the T3200 then it is likely that there is a default bios setting for the hard drive. Try this setting. If there isn't a default setting you will have to open the machine up and see what HDD is fitted. You'll have to do this anyway to replace the battery. Getting the case apart. On the top of the case, at the rear, there are two small covers which slide off to reveal hidden screws. Undo all of the screws on the underside, take of the rear cover and metal panel and the case should come apart. The battery is probably stuck onto the back of the floppy drive chassis with Velcro. (The T3200's only bad feature in my opinion). If you need to take the display apart, the screws are located under the rubber 'feet' located in the corners and underneath the label marked FDD, HDD etc. A pair of AAA sized Alkaline cells will do as a temporary replacement CMOS backup battery. There is enough room under the keyboard for them.

23 years, 6 months

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HP III PS claimed

by lemay＠cs.umn.edu

The postscript level 2 and the memory card have been claimed. Apparently there are quite a few people still using HP III's out there ;) -Lawrence LeMay

23 years, 6 months

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Security bits and screws

by jfoust＠threedee.com

At 10:34 PM 1/18/2002 -0600, Tothwolf wrote: >I was recently asked to work on equipment that had tri-wing screws holding >it together. It was apparent someone had tried to use pliers to remove the >screws, but was unsuccessful. I don't yet have a set of tri-wing bits, so >MCM might get some business from me after all. I've always wanted a bit set that will disassemble the McDonald's Happy Meal toys. They almost always have a screw with a triangular hole, perhaps rounded at the bottom. What are those called? Trilobe? - John

23 years, 6 months

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Japanese Transistor Manuals

by acme_ent＠bellsouth.net

Tony -- > > That's why I bought the Japanese manuals (there's one for FETs and one for > > Where do you get them from, and how do you order them (given that the > titles are in Japanese)? The titles are in Japanese and English. You would have no problem reading them. Most Japanese trading firms will throw one in if you order $2000 worth of parts ;>) Or, you may order from MCM Electronics. Each book is USD $19.95. Glen 0/0

23 years, 6 months

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OT? Apple Stylewriter problems (longish)

by acme_ent＠bellsouth.net

> From: Pete Turnbull <pete(a)dunnington.u-net.com> >However, it seems like every >time someone in Japan or other some other parts of the Far east designs a >circuit, they design or specify a new transistor for it -- a transistor >that is almost identical to some existing device, but has with some minor, >often trivial, tweak. I suppose it may save some corporation a fraction of >a yen on each of hundreds of thousands of units. Please note that each number is produced by a specific manufacturer. Only Sanyo makes the 2SC1308K, and only Sony makes the 2SC867A. The manufacturer name is in Japanese, in a column on the left side of the entry (don't have my book handy). So if Panasonic-Matsushita is desiging a piece of equipment, chances are that they will initiate a new Matsushita part number rather than buying an equivalent device from a competitor such as Hitachi or NEC. Thus the many equivalent devices. Glen 0/0

23 years, 6 months

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DEC Rainbow available in Tucson

by zaft＠azstarnet.com

Anyone want a mint-condition DEC Rainbow? It's free for cost of shipping >from Tucson, AZ, USA. My contact descries it as a DEC Rainbow 1-00+ complete with keyboard and monitor. On the back it apparently says PC-100+ PC-100-B2 It has a 12 MByte disk, DOS 2.11 with Fortran and dBase loaded. Please contact me offlist if you are interested. GZ

23 years, 6 months

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Symbolics Lisp Machines?

by geoff＠pkworks.com

Wait a moment, I'm one of the people of the RCS/RI! I just this minute returned from our monthly Open House. Let me back up a moment, here, because I don't get all the RCS/RI's traffic, and I haven't heard of any of this. We've had several members seriously sick recently, and if you've been conversing with one them then that's why you haven't heard back. I will forward this message among the RCS/RI members. Meanwhile, would the original poster of this traffic please e-mail me with details so that I can fetch them around inside the RCS/RI so that they don't get lost again? -----Original Message----- From: David Betz <dbetz(a)xlisper.mv.com> To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org> Date: Saturday, January 19, 2002 8:35 PM Subject: Re: Symbolics Lisp Machines? >I was never able to get the people from the Retro-Computing Society of >RI to reply to email. I may just buy the keyboard and mouse from >Symbolics now that my company is paying me again. > >On Saturday, January 19, 2002, at 05:52 PM, Bob Shannon wrote: > >> I thought the the people in Rhode Island were able to help you out >> there? >> >> I thought they needed some mice, which I may have so you can work a >> trade. >> >> Lemme know, you should get that box running! >> >> David Betz wrote: >> >>> Yes, you did. And to me too! Thanks again. >>> BTW, I'm still looking for a keyboard and mouse.... >>> >>> David Betz >>> dbetz(a)xlisper.mv.com >>> >>> On Friday, January 18, 2002, at 07:57 PM, Bob Shannon wrote: >>> >>>> Any interest in restoring an original CADR list machine? >>>> >>>> (I already gave away the only Symbolics box I had...) >>>> >>>> Brian Chase wrote: >>>> >>>>> On Fri, 18 Jan 2002, r. 'bear' stricklin wrote: >>>>> >>>>>> How much you want to pay? You can buy one directly from what's left >>>>>> of >>>>>> Symbolics. Couple thou for an XL1200 and Genera 8.3. >>>>>> >>>>>> Talk to David Schmidt. I can put you in touch if you're interested. >>>>>> >>>>>> Otherwise? You get lucky. (; >>>>> >>>>> An XL1200 would be great, but it'd be for collector/hobbyist use. >>>>> I'm >>>>> not wealthy enough to justify a few grand for the sake of curiosity-- >>>>> though there are plenty of times I wish I were. >>>>> >>>>> -brian. >>>> >>>> >> >> > > > >

23 years, 6 months

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Symbolics Lisp Machines?

by vaxzilla＠jarai.org

Does anyone know of decent source for Symbolics Lisp systems? -brian.

23 years, 6 months

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Kinda OT but that what's true HW hacker do in a pinch.

by CLeyson＠aol.com

Nowadays most small 50/60 Hz transformers have thermal fuses fitted. It isn't mandatory but it is good practice from a safety point of view. A lot of "power bricks" have these fuses fitted because it is cheaper than than a separate fuse holder. If the manufacturer fitted a fuse, you can guarantee that there is always someone who would bypass it. Chris

23 years, 6 months

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Toshiba T3100/20

by CLeyson＠aol.com

In a message dated 19/01/02 driess94(a)dolfijn.nl writes: > HEllo, I have bought a Toshiba T3100/20 but it won't start. Stefan, This may help, it applies to a Toshiba T3200SX so may be of some use. If there is a small switch located near the floppy drive, set it to 'B' or 'PRT'. This switch configures the parallel port for printer or external floppy drive. If it's set to 'A' the bios goes looking on the parallel port for the A drive. The machine should now boot from a DOS boot disk. Bios settings. If the T3100 is anything like the T3200 then it is likely that there is a default bios setting for the hard drive. Try this setting. If there isn't a default setting you will have to open the machine up and see what HDD is fitted. You'll have to do this anyway to replace the battery. Getting the case apart. On the top of the case, at the rear, there are two small covers which slide off to reveal hidden screws. Undo all of the screws on the underside, take of the rear cover and metal panel and the case should come apart. The battery is probably stuck onto the back of the floppy drive chassis with Velcro. (The T3200's only bad feature in my opinion). If you need to take the display apart, the screws are located under the rubber 'feet' located in the corners and underneath the label marked FDD, HDD etc. A pair of AAA sized Alkaline cells will do as a temporary replacement CMOS backup battery. There is enough room under the keyboard for them. Good Luck Chris

23 years, 6 months

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Kaypro 10 for sale (fwd)

by donm＠cts.com

Please reply to the originator about these items. Thanks. - don ---------- Forwarded message ---------- Date: Sat, 19 Jan 2002 14:31:47 -0500 From: Jeff Mellor <cjeffmellor(a)aol.com> Reply-To: mellor(a)utk.edu To: donm(a)cts.com Subject: RE: Kaypro 10 for sale I have a fully functional Kaypro 10 computer (excellent outside physical condition, all original books, disks, cordura carrying case), Comrex daisy wheel printer (several wheels) also fully functional), and Tandy 102 (also fully functional, original box, books, plus several other books) with connecting cord (to input data into Kaypro) for sale at a fair price. Would you or any of your contacts be interested? Contact: Jeff Mellor 4204 Taliluna Avenue Knoxville, TN 37919-8363 (865) 522-9896 cjeffmellor(a)aol.com mellor(a)utk.edu

23 years, 6 months

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Toshiba T3100/20

by driess94＠dolfijn.nl

HEllo, I have bought a Toshiba T3100/20 but it won't start. When I boot it up it start's with an error. Then you have to press F1 to go to the CMOS Bios or some thing. Then you have to select the Hard disk and floppy drives and stuff. Then it will say that floppy drive A isn't installed. After a wile it start and say's "Put system disk in drive" What can I do so it start's correctly?? Many thanks. Stefan Driessen Jr. ______________________________________________________________ Gratis e-mail en meer: http://www.dolfijn.nl/ ilse weet nu ook alles van muziek! http://ilsemusic.ilse.nl/

23 years, 6 months

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OT: cat

by mcguire＠neurotica.com

Somewhere recently, I'm pretty sure it was on one of these two lists, someone ribbed me for being "such a pushover" for my cat. I took this pic earlier...tell me, who could help being a pushover for this? http://ti.neurotica.com/adorable-cat.jpg -Dave -- Dave McGuire St. Petersburg, FL "Less talk. More synthohol." --Lt. Worf

23 years, 6 months

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Diablo 3200

by webmaster＠rada.org

I have a Diablo 3200 and just about to dump. Have spent a few hours trying to get it work. I have boot , diagnostic and some application disks I am in London England where are you Gordon

23 years, 6 months

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OT: HP Vectra VA 6/200 (PPro 200)

by healyzh＠aracnet.com

OK, I now know why OS/2 Warp is only seeing 48MB. It's because the computer things it's has 16MB in each of the three banks when in reality it has 64MB per bank, for a total of 192MB (in upgrading I discovered that it didn't have the 48MB I thought was in it, it had 112MB). According to the manuals this system supports 32MB EDO SIMMs, which is what I'm using in all three banks. Any idea how to convince it that it has them instead of 8MB ones (it things it has 1 bank of ECC, and two of EDO). What can I say, I just got the system recently and it's the first PPro I've had, and the first system with EDO RAM. Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh(a)aracnet.com (primary) | OpenVMS Enthusiast | | | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | PDP-10 Emulation and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |

23 years, 6 months

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Terminal junkie finds Lynwood Alpha

by celigne＠tinyworld.co.uk

I've mentioned my obsession with terminals before and today I had a real find. I was doing my regular trawl of the skips at work and found a Lynwood Alpha, which I've not seen for nearly 15 years. I worked for a year at the UK Atomic Energy Authority at Culham Labs, Oxon, and used to use a Lynwood Alpha to connect to their Prime minis. It was only a text terminal (AFAIK), but it was most appealing to me because you could define soft characters, right from the keyboard. Lynwood Scientific Developments Ltd. used to make TEMPEST-compliant equipment for government agencies, but at the time I didn't have a clue whether these terminals were shielded and had fibre-optic comms outputs or were ordinary terminals. All I knew was that the screen was very heavy. Since then, I've never seen one or found any information about them, so I didn't even know whether the Alpha was completely Lynwood's product or a shielded version of someone else's terminal. Now I know! This terminal was used in one of our radar trials vans, presumably bolted into a big rack, because the top of the monitor case is missing and it had an extra fan bolted underneath the monitor, blowing up through the three cards sitting alongside the CRT. As best as I can tell, it dates from 1981 and is powered by a Zilog Z8001 CPU, which I've never seen before. The Comms output is either RS232C or 20mA. No sign of fibre. The keyboard is huge and heavy, with two long rows of function keys at the top. Intriguingly, the top row of keys have LEDs built in, with legends like "Format", "Italics", "Half Intensity", "Rev Video", "Blink", "Under", "Graphics" and "RAM Ch Gen". I wonder why this was? You'd expect the host to send codes to change the rendition of characters, rather than having the user swap at will! Unfortunately, it has been out in the rain for a week, so I'll have to dry it thoroughly before attempting to fire it up. There are also two NiCad cells on one of the boards and they have leaked, so a bit of cleaning is in order. It's not very interesting to look at, but I'll take some photos and stick them on the Web site it anyone would like to see it. - Paul PS. Also nosed around a colleague's bookshelf and discovered a User Manual for Data General DASHER D410 and D460 terminals, containing programming information, so I'll scan that later.

23 years, 6 months

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HP model 236

by pat＠purdueriots.com

Last time I went to university savlage, they had a HP model 236 'computer' laying in the back corner, and I was wondering if it was worth anything to pick up. It looks like an Apple II with a pair of built-in 5-1/4" floppy drives and 'integrated' keyboard, a pair of HPIB ports on the back, and some boxish-looking 14" or so monitor. What kind of stuff is probably inside, and how old is it? (Proc, possible memory size, etc...) -- Pat

23 years, 6 months

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GCC for PDP-11

by spedraja＠ono.com

>Hello, > >GCC has support for the PDP-11, but is anyone using it to (cross) >compile any code? I know it, and I even downloaded the support package some time ago. But, in appeareance, nobody know it, or they have an wrong idea about what we speak when mention GCC for PDP-11. Just by the way... What's the status of this package (GCC support for PDP-11) actually ? What machine requirements are needed in the PDP-11 side ? It could be a good moment to do a cross development test. Greetings Sergio

23 years, 6 months

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Strange Apple //c problem

by rcini＠optonline.net

Hello, all: I recently got a //c with the 5-1/4" internal drive and was playing around with it last night. It doesn't seem to want to boot DOS 3.3 and it seems to only be able to boot ProDOS disks, which stops after the splash screen (copyright notice) with a "relocation/configuration error". DOS 3.3 won't boot at all. I've seen this error before with ProDOS but I don't remember the reason. This error occurs with both ProDOS 1.1.1 and 1.9 disks, and I tried multiple working disks. This is a strange one but since I don't have much experience with the //c I wanted to throw this problem out to the group. Any thoughts? Rich Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/

23 years, 6 months

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test-drb January 2002