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

by vax9000＠gmail.com

I have only 5 computers that are older than 10 years. But none is older than 20 years. It can barely be called a 'museum', but hey, at least it's on-line. http://www.wintersweet.com/computermuseum/ vax, 9000

21 years, 2 months

1
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RGB-to-VGA adapter & docs was: Re: HP "Field Guide" ?

by adamg＠pobox.com

Many SVGA monitors are happy to take a sync-on-green signal as long as the sync frequencies are in range. Check your monitor docs, or try it. -- Adam

21 years, 2 months

1
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TU-56 capacitor repair (part numbers)

by jwest＠classiccmp.org

I finally found the info on suggested TU-56 cap repair from the guy who actually did it with these parts. Here is what he had to say: > The capacitors are from www.newark.com part number 89F2059 with bracket > 81F3218 > > These must be replaced in pairs. > > Attached is a JPG of the mounting plate made from a 1/16" thick aluminum > plate. The image should be to scale. The height is 5" and width is 4.3" > > The plate is attached using 0.5" 8-32 standoffs from www.digikey.com part > number 8427K > > You will also need 1/4 and 3/8 8-32 screws. Note that the caps he found & used are slightly different size than the originals, hence a different mounting plate and brackets. Hope this helps everyone! I can put the .jpg file refered to up if people want to see that too. Jay West

21 years, 2 months

6
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Sun Sparc 1+ workstation FREE

by lab＠lincolnbaxter.com

Hi All, I have a Sum Sparc 1+ workstation, w kbrd, optical mouse, extern 1 gig Disk, Monitor (1200x1024), that will eventually find its way to the local recycle bin, if someone doesn't want it. The battery on the CPU board is dead, so the system does not remember how to boot. The system as SunOS 4.1.x loaded on it. ( From the new prompt: boot sd 0,2,0 or something like that ) It was last booted probably in 1998 or 99. The system is located in Philadelphia area (19460 zip code). All you have to do, is arrange to have it packed and shipped, or pick it up. Original packing materials are not available. Please reply off list if you are interested. Lincoln

21 years, 2 months

1
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Free uVax/PDP-11 systems, SCSI controllers, etc., Washington DC area

by shoppa_classiccmp＠trailing-edge.com

Free in the Washington DC area, you pick up only, will not ship: KA650-based uVax III in rack-mount BA213, with SCSI controller, 9-track 1600/6250 drive, SCSI disk drives, SCSI CD-ROM, all in H960 (6-foot) rack. Q-bus system with 11/73 (KDJ11B) CPU, SCSI controller, 9-track 1600/6250 drive, SCSI disk drive, SCSI tape drive, all in H960 (6-foot) rack. Several DSD-440 dual 8" floppy systems and controllers. All the associated cables, power controllers, etc., to run the above systems. A five-foot non-DEC rack. etc. First-come, first served. SCSI controllers not available separately. You'll need a really big station wagon or mini-van or small truck to fit the racks. E-mail me at my regular address, shoppa at trailing-edge.com, if interested. Stuff available for pick-up on evenings and this weekend. Tim.

21 years, 2 months

1
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Totally OT, but frustrated.....

by dwight.elvey＠amd.com

>From: "Fred Cisin" <cisin at xenosoft.com> > >> "Nobody programs in assembly language anymore, nor ever will >> again." - Clancy and Harvey (UC Berkeley) > >On Fri, 25 Mar 2005, Paul Koning wrote: >> Wrong, and wrong. Where did they get that bizarre notion? > >The biggest reason why I don't think that I should retire yet - >I teach an assembly language class. > > >They're LISP (actually "SCHEME") fanatics. > >They demo'd an example that "can not possibly be solved in ANY way >but recursion". While they were keying it in in Scheme, I wrote >out a non-recursive solution (with a 2D array) in C, BASIC, FORTRAN, >and I got halfway through writing the COBOL form. Hi I don't believe that the Turing test does recursion. If that is so, they would have to believe that they just proved that it couldn't be calculated on a computer with or without recursion. An intersting exception to the Turning test? Dwight > >-- >Grumpy Ol' Fred cisin at xenosoft.com >

21 years, 2 months

3
2
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Totally OT, but frustrated.....

by dwight.elvey＠amd.com

>From: "John Foust" <jfoust at threedee.com> > >At 05:18 PM 3/25/2005, Dwight K. Elvey wrote: >> I don't believe that the Turing test does recursion. >>If that is so, they would have to believe that they just >>proved that it couldn't be calculated on a computer >>with or without recursion. An intersting exception to >>the Turing test? > >Turing test? The one where he wants to sort the men from the women? > >- John > > Oops! I meant the Turing machine used as a test for computability. Dwight

21 years, 2 months

1
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Release 0.6 of PDP-11 SIMH for Mac OS X

by dundas＠caltech.edu

Folks not interested in DEC PDP-11s and SIMH may want to ignore this. However for those interested in PDP-11s that have Mac OS X, I am pleased to announce that a Mac OS X-specific port of the PDP-11 simulation of SIMH is available for download. Please use the following URL to access the instructions and .dmg file: <http://dundas-mac.caltech.edu/~dundas/retro/simh/> This application is a port of PDP-11 simulation only of SIMH V3.3-2 (the current release) to the Macintosh OS X environment. The application requires a G3 or newer with OS 10.2 or later in order to execute properly. Features of the application include: - Built-in complete VT100 emulation. No need to use Terminal.app to access the console or run the simulation. The VT100 supports copy & paste between applications. Emulation is very complete and has been tested with TECO/VT, KED, and EDT. - Built-in PDP-11 front console panel. The panel emulates a PDP-11/70 console and can appear in one of three variants. All switches are functional except S INST/S BUS CYCLE. Almost all lights are functional. Keyboard equivalents are available for all console switches. The Console also has an optional "speedometer." - Interface to SIMH is either through SCP commands in the VT100 window or Macintosh native menus and dialogs. - Dynamic tool tips (formerly balloon help) are supported in all windows and dialogs. - On-line help and documentation. - The application looks for a fixed configuration file (~/.simh-pdp11rc) at startup. All file commands may specify relative paths with ~ or ~user. - The application can optionally spool LPT output to a PostScript printer, simulating greenbar paper, as the simulation creates it. - The application supports Processor Services allowing other applications to send commands to the VT100 or Console windows. Copy and paste is supported in the VT100 window. Drag and drop will be supported in future releases. - The application provides desktop icons for tape container files (.tap). Tapes (.tap and .tk50) can be attached while the simulation is executing by double clicking on the files. [This capability soon to be added for disk container files as well.] Please enjoy and send any feedback directly to me. Thanks, John

21 years, 2 months

2
1
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Cables for RX50 in BA23

by drb＠msu.edu

Noob warning. Can anyone help me identify the part numbers of the cable(s) which would be used to connect an RX50 to an RQDXn (mine's a 3) in a BA23 case? Say an 11/53 or 11/73 type of machine? Thanks, De

21 years, 2 months

3
5
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Vintage Computer Market

by birs23＠zeelandnet.nl

This is a bit of a shameless plug but hmm its not off-topic so ;-) Been expanding my page a bit and this is the latest addition http://www.mansier.net/classifieds_1_3/ Any suggestions for more categories are welcome. You can ofcourse also offer any swap's there or give away's. As long as its about vintage computer stuff. Cheers, Stefan. ------------------------------------------------------- http://www.oldcomputercollection.com

21 years, 2 months

4
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Various Intel tool manuals free for cost of shipping

by bob＠applegate.org

I've got some manuals, but NO DISKS for some older Intel tools; the stuff is taking up room on my limited cube desk space. It is possible that the disks will eventually turn up, but don't count on it. Anyway, I have these manuals, all in good shape, all in their original slide-in boxes as a four-box set. The copyrights appear to be all from 1988. * Intel ASM386 Macro Assembler Operating Instructions for DOS Systems * Intel iC-86/286/386 Compiler User's Guide for DOS Systems * Intel386 Family System Builder User's Guide This has two boxes. The caveats? A few... * YOU pay all shipping. I'll ship, send you a UPS tracking number and a total, then you pay via check, money order or PayPal. * YOU agree to add it to a museum, use for personal use, etc. You may NOT just turn around and sell them on eBay. If you've got some unwanted KIM-1 stuff, I'd be more than happy to exchange this Intel stuff for your KIM material! I hope to be at TCS in a few weeks and would consider delivering them in person. Questions? Just ask! Thanks Bob ------------------------------------------------- Bob Applegate Senior Software Engineer Embedded Development Group Ulticom, Inc 856-787-2761

21 years, 2 months

1
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Good description of Apple ][ disk controller

by vcf＠siconic.com

I am pretty surprised that I can't find any good technical descriptions of the Apple ][ disk controller. It's not in the DOS manual and, come to think of it, I can't think of any publication Apple came out with that describes it. I wonder why this is? Does anyone have any good suggestions for reference material on this subject? I've got Beneath Apple DOS, which is of course excellent, and the Bag of Tricks manual (which rehashes a lot of what's in BAD), but nothing outside of those really describes the disk controller circuitry at an even lower level. I want to know what's going on in the PROMs, and why the certain rules of encoding data are why they are (i.e. first bit of every disk byte must be set, no more than one set of consecutive zeros in any byte, etc.) -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

21 years, 2 months

10
21
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Wanted : Manual for Philips 350 Series

by rimmer＠xs4all.nl

I am looking for a manual for the Philips 350 series for someone. If anyone has one or a copy or pdf etc, please let me know. Thanks! Stefan.

21 years, 2 months

1
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Anyone collect old tax software programs?

by billdeg＠degnanco.com

I have a lot of old tax preparation programs, multiple OS formats mostly in the "newer vintage" timeframe, but some older stuff too. I thought I remembered someone posting a notice looking for accounting software. I plan to re-use the disks for scratch, especially the newer 5 1/4" PC format software, if I do not get any takers. If interested contact me - billdeg at aol dot com. -Bill

21 years, 2 months

1
0
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Televideo 950 docs

by CPUMECH＠aol.com

Take a look at the Bi-polar cap on the monitor bd. C306 usually a 22ufNP. Televideo's are known for the to overheat and fail.

21 years, 2 months

1
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FT: Would like to trade some TK50 ->TK70's

by dholland＠woh.rr.com

Hi, Due to my inability to read a EPay auction correctly, I'm now the "proud" owner of 25 CompacTape tapes. I was looking for CompacTape II's for my TK70 drive.. (oops) Anyone want to trade feel like trading some TK70's for my TK50's? No, I'm not looking for a 1:1 swapping ratio, though I'm not going to complain if it were. :-> All I was looking for was 6-10 CompacTape II's tapes to putter around w/ on my VAX. I also need to admit, I've not tried reading any of these tapes to see if they're good. All but one have their cases. They "look" reasonably well stored to me if that means anything. Dayton OH area. Would kinda prefer to avoid overseas shipping. (sorry) Prefer replies off list: dholland at woh.rr.com (Though honestly, I'm not entirely certain I'm proposing is a fair trade - so friendly comments to that effect will be listened to.) thanks, David

21 years, 2 months

5
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TE10/TU10\

by GOOI＠oce.nl

> The TE10 uses the TE16 transport with a Unibus TM11 interface. > The TU10 used the TU16 transport with the Unibus TM11 interface. > > The TE16 is the redesigned version of the TU16 with a better > tape path, auto-rewind to BOT after tape load etc. > > The TE10 is the better unit although both are the same spec > 800bpi/1600bpi (IIRC) and 45ips (or is it 45ips rewind speed?). > > I used to do a lot of Field Service on the DEC tape drives > and the TE16 was pretty reliable -- with only the tape locking > mechanism breaking (same part as one of the Kennedy drives). > > Bill Hmmm, what are my options when the thin "rubber" layer of the capstan roller went goo, Bill? Capstan roller might not be the correct term, it is the roller that transports the tape to the upper (pick-up) reel. On both my TE16 drives the rubber has become *very* sticky, so I am listening for any solution ... - Henk, PA8PDP.

21 years, 2 months

1
0
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Cables for RX50 in BA23

by pete＠dunnington.u-net.com

On Mar 24 2005, 23:12, Jerome H. Fine wrote: > >Pete Turnbull wrote: > >Actually it's a 34-way cable, just like the 34-way cable used for a PC > >3.5" drive, though without the "twist" that most PC drive cables have. > > > Jerome Fine replies: > > As usual, you are correct. I suspect that my > error would have been noted as soon as the attempt > to actually plug the 40 pin cable into the 34 pin > header of the RX50. Yes, it would have been obvious and probably not caused any confusion. I only posted the followup in case anyone else who'd not seen the distribution panel went looking for a cable in advance, really. > As for the lack of a twist, I seem to remember that > the twist was only after the first connection, i.e. > on the second connection. Since there is only a > single connection to the RX50, if I am correct, > the twist would not affect anything. That's right. I've used cables like that. -- Pete Peter Turnbull Network Manager University of York

21 years, 2 months

1
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argh

by julesrichardsonuk＠yahoo.co.uk

wuuuuuuuh waaaaaaah wuuuuuuuh waaaaaaah wuuuuuuuh waaaaaaah wuuuuuuuh waaaaaaah wuuuuuuuh waaaaaaah wuuuuuuuh waaaaaaah click click click... I'm sure QIC-24 tape drives were designed for the sole purpose of driving me insane :/

21 years, 2 months

5
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"Thyractors" on the DEC LT33 modified ASR33 Teletype

by pkoning＠equallogic.com

>>>>> "vrs" == vrs <vrs at msn.com> writes: >> I am currently modifying my Teletype ASR33 into a LT33 according >> to the vrs> DEC >> specifications to work with my PDP-8/L. Does someone know what is >> a Thyractor (GE 6RS20SP4B4) ? Some kind of voltage clamping device >> ?. How could I make one, using, for instance a pair of thyristors >> or a pair vrs> of >> zenner diodes ? vrs> thyractor: "A marketing name by DAVIS, the thyractor was a vrs> combination of a low loss choke (the reactor) and a thyristor." vrs> I know NTE still markets a replacement for the 6RS20SP5B5 (but vrs> not the 4B4). Unfortunately, I don't have the detailed specs vrs> for the 4B4. vrs> On the other hand, I think it is just a handy voltage clamp to vrs> keep the semiconductor circuits from seeing the inductive spikes vrs> from the TTY. Shouldn't be too hard to come up with something vrs> else that would work. If it's a voltage clamp, then either back to back zeners, or a MOV should work. MOV might be the better choice since they are explicitly designed as protective devices. Zeners would be ok in the larger sizes, but the small ones may be fragile enough that they don't do well in this application. paul

21 years, 2 months

5
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HP9134A 4.6MB HD on eBay

by jpl15＠panix.com

for $2.99 (yup - 3 bux) http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=167&item=5179025649 Cheers John

21 years, 2 months

1
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Cables for RX50 in BA23

by pete＠dunnington.u-net.com

On Mar 24 2005, 9:15, Jerome H. Fine wrote: > Dennis Boone wrote: > > >Can anyone help me identify the part numbers of the cable(s) which > >would be used to connect an RX50 to an RQDXn (mine's a 3) in a > >BA23 case? Say an 11/53 or 11/73 type of machine? > > > Jerome Fine replies: > > The BA23 normally arrives (i.e. has as standard > hardware) a distribution panel for the RX50 dual > floppy drive and RD5n hard drives. A 50 pin flat > cable with a female header at both ends is used to > connect the controller (RQDX3 in your case) to this > distribution panel. The distribution panel has a > 40 pin connection available in approximately the > centre (although only the connection headers are > visible through holes in the bulkhead between the > distribution panel and the area which holds the > floppy and / or hard drives). The cable to be used > is a 40 pin cable with a female header at both ends > and usually about 10" in length (when used in a BA23). Actually it's a 34-way cable, just like the 34-way cable used for a PC 3.5" drive, though without the "twist" that most PC drive cables have. The RX50 uses an almost-standard SA400-style interface . -- Pete Peter Turnbull Network Manager University of York

21 years, 2 months

2
1
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$2000 Black Apple (?) - scam ?

by dave04a＠dunfield.com

>Oh yeah, and one sold last week on ebay (no drives, not tested) for >$182... so IF the guy really has an untested unit he is able to sell for >$2000... he is one lucky SOB. I'll let ya know if he says the sale actually went through (I asked him to keep me posted). I corresponded with the guy a few times back and forth when he first contacted me, to help him figure out what he had... My "gut feel" is that he's not trying to scam, but he may be getting scammed - I sent him to one of the fraud sites to read up on scams involving buyers offering unrealistic prices. I personally take Ebay prices with a big grain of salt --- In looking for the Black Apple you mentioned, I noticed a "@@LOOK@@ ***RARE*** Original Macintosh 128" up to $250 ... (I bought a near-mint Mac (128) with a nice carry bag, external floppy drive and other goodies for $19 (Cdn) at a local goodwill shop a couple of months back). And I do have to add shipping ($50+ on something this big) plus taxes, duty, brokerage and currency conversion to anything I purchase from the states, so I felt $150 (base) and the aggrevation of getting it here was not worth it to me. But, I agree that someone who REALLY wanted it and/or didn't know better might pay a few hundred ... (especially if they are an Ebay type). It wasn't until it went over $500 and then $1000 that I really started to think that he might be getting scammed. Anyone have advice to pass on to him - anyone used agents/services to perform an overseas transaction more safely etc.? Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

21 years, 2 months

18
50
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Emulating tapes/disk via linux/*bsd ?

by julesrichardsonuk＠yahoo.co.uk

Quick check to see if anyone's ever tried this. (where "tried" = "written some code to do so") In theory one could hook up a system running linux/*bsd with a SCSI controller present acting as a target rather than initiator, and have the machine pretend to be a tape drive, hard disk etc. I have no idea if the linux / *bsd kernels (or card drivers) support running as a target, or if the necessary hooks are present into user- land (eg. via 'sg') to allow user code to do the emulation, though. Just thought I'd ask if anyone's attempted to do it before... (personally I can write sg device code, but I'm by no means a kernel hacker) cheers J.

21 years, 2 months

5
4
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RK05 Help

by rickb＠bensene.com

Hello, I have two RK05J drives, both exhibiting the same problem. They are *not* currently connected to a system. I have them on the bench cleaning them up and getting them ready to connect to a PDP 8/e system after a long period of storage. There is the I/O terminator card installed in the proper slot in the drive electronics backplane. When the drives are powered up, the "power" and "load" lights are on, and the door release is activated so that the door can be opened and a disk pack inserted. However, the blower motor that provides the air circulation for the drive never starts up. I've checked both blower motors to assure that they are not seized, and the both spin very freely. I traced the power wires from the blower motor to a barrier strip, where I checked for 110V AC power, and there's nothing there. So, somewhere in the circuitry, something isn't right. Any ideas? Thanks, Rick Bensene The Old Calculator Web Museum http://oldcalculatormuseum.com

21 years, 2 months

6
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Apollos and tape drives...

by julesrichardsonuk＠yahoo.co.uk

For the archives, as this might save someone else a lot of messing around one day :-) Was struggling to get a 400t to install from tape as it'd always die with "(open_input_volume) Unable to open volume. (unrecognized error status 28000B)" after doing a tape retension when loading from the boot tape. It was driving me nuts as I'd tested the drive and media elsewhere and it was fine, plus it was reading CALENDAR / INVOL / DOMAIN_OS from the boot tape fine. I spent a long time messing around with SCSI cabling, double and triple checking devices ID's etc. As a last resort I tried my 150MB SCSI tape drive - I've known it to be a little flakey with reads sometimes, but I just wanted to see if behaviour was different. Guess what - it's worked fine! The 150MB drive is a little newer than my 60MB one. All I can think of is that the 60MB drive takes a little too long to become ready again after the retension for the Apollo's liking, and it times out. Maybe it'd be fine on a slower machine (DN3000 / DN3500 say) but it isn't up to the job on a 400 series system. Anyway, maybe this'll save someone a bit of pain one day (it takes around 15 minutes each to run invol and calendar from tape and well over 30 for domain_os, so it's rather a slow process to keep on having to do! - I've probably run through it ten times in the last 2 days trying to figure out what was going on) cheers Jules

21 years, 2 months

1
0
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History of notebook computers

by news＠computercollector.com

It's one thing to comment on a specific article, but there's no reason to indict a whole group of people and say that we're one notch about fast food workers. That is not only incredibly stupid, it's direct intolerance. He might as well have been talking about a race or religion or nationality -- which surely would not have been tolerated here. --- Kurt Huhn <kurt at k-huhn.com> wrote: > > Why is it that every time someone says the least thing "boo" about the > media, you get your panties in a twist? Give it a rest. He's entitled to > his opinion.

21 years, 2 months

9
13
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Apple Gift Catalog

by nospam212-cctalk＠yahoo.com

I was playing with an old copy of Acrobat at work and created a pdf of an old Apple Gift Catalog I had laying around. Thought I'd let anyone interested know about it. It was interesting seeing how many items in it I had picked up at one time or another. You can find it in my Apple 2 area at http://www.trailingedge.com/apple2/ in the "History" section as "Old Apple Gift Catalog". Side note, are there other options for creating a pdf like this or is getting my own copy of Acrobat it? Thanks

21 years, 2 months

3
2
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AS400 for auction

by drb＠msu.edu

There's an AS400 in an auction in Grand Rapids. Current bid, $50. Auction ends tonight at 8:00 ET. This is the liquidation of the assest of the company which was busted by the feds last year for massive investor fraud. http://www.biddingatauction.com/listings/details/index.cfm?itemnum=795843156 FWIW, De

21 years, 2 months

2
1
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Rare Apples, eBay, Goodwill

by dwight.elvey＠amd.com

>From: "Eric Smith" <eric at brouhaha.com> > >Sellam wrote: >> It would have if it wasn't decided that 80 or so synchronization bytes >> were absolutely necessary between each sector. I still don't quite >> understand what reasoning went into that particular aspect of the >> design. > >Suppose you format a disk on a Disk II that is 10% fast. Now you stick >the disk in a drive that is 10% slow, and write a sector. The 342 >nibbles of the data field will take up the space on the disk that was >formerly used by 417 nibbles on the disk, or the 342 nibbles of the >data field plus 75 nibbles of the gap. > >And I've ignored the header and trailer bytes, and the new self-sync >written in the gap and after the end, so it's actually worse than >that. > >As it is, 80 nibbles of gap isn't quite enough to allow for +/-10% speed >variation and leave still leave enough self-sync bytes, but if they >reduced it, writing a sector might overwrite the address field of the >next sector, rendering that sector unreadable (even though the data >field of that sector would still be intact). Of course, when did you see a drive that is anywhere near 10% off in speed? Even the older belt drives could hold better than +-5%. 5% is over one strobe maker per second ( for the older disk with stobe marks ). The newer drives with electronic commutating can hold much better than that. Dwight > >They couldn't fit 17 sectors without seriously compromising the >allowable speed tolerance. > >Some copy-protected games crammed in more by writing one giant sector >per track. > >Eric > >

21 years, 2 months

1
0
0 0

Good description of Apple ][ disk controller

by adamg＠pobox.com

Some good info and references have already been posted, but another place to look is "Beneath Apple ProDOS" (the follow-up to "Beneath Apple DOS"). It covers GCR, nibblizing and the state machine, and includes a dump of the PROM. It references "Understanding The Apple II", which I do not have, so I don't know if their content is orthogonal. Also, I remember hearing that there's some info in the manual that came with the Disk ][. -- Adam

21 years, 2 months

2
1
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Apple Gift Catalog

by nospam212-cctalk＠yahoo.com

I really wanted that too, instead I ended up with someone very sweet at the time who saw it, knew I wanted it and went off and made one herself for me. Still have it and still love it. :) --- Vintage Computer Festival <vcf at siconic.com> wrote: > On Wed, 23 Mar 2005 nospam212-cctalk at yahoo.com > wrote: > > > I was playing with an old copy of Acrobat at work > and > > created a pdf of an old Apple Gift Catalog I had > > laying around. Thought I'd let anyone interested > know > > about it. It was interesting seeing how many > items in > > it I had picked up at one time or another. You > can > > find it in my Apple 2 area at > > http://www.trailingedge.com/apple2/ in the > "History" > > section as "Old Apple Gift Catalog". > > Oooh, I want the latch-hook rug kit! > > Too cool! > > -- > > Sellam Ismail > Vintage Computer Festival > ------------------------------------------------------------------------------ > International Man of Intrigue and Danger > http://www.vintage.org > > [ Old computing resources for business || > Buy/Sell/Trade Vintage Computers ] > [ and academia at www.VintageTech.com || at > http://marketplace.vintage.org ] > >

21 years, 2 months

1
0
0 0

TE10/TU10\

by bpechter＠monmouth.com

> > > Message: 3 Date: Wed, 23 Mar 2005 21:11:49 -0500 From: "Ashley Carder" > <wacarder at usit.net> Subject: RE: TU10 vs TE10 To: "General Discussion: > On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Message-ID: > <AAECIIBCJNMHBHOFJIBPGEGPCMAA.wacarder at usit.net> Content-Type: > text/plain; charset="US-ASCII" > >>>>>>>> >>>>> "Ashley" == Ashley Carder <wacarder at usit.net> writes: >>>>>>> >>>>>>> >>> >>> Ashley> What's the difference between a TU10 and a TE10 DEC magtape >>> Ashley> drive? >>> >>> I don't remember a TE10. There's a TE16, which as far as I remember >>> is a TU16 with the mechanics made more user-friendly (easier tape >>> loading and all that). >>> >>> Looking at the RSTS code, there is no trace of TE10 in there, so it >>> looks like the difference is invisible to software. >>> >>> paul >> >> > >The tape drive that's currently on ebay with the 11/34 in the short >cabinet has a label that says TE10 on the back. The seller sent >me some pictures that appear to say TE10, and he says it's a model >TE10. Take a look at ebay item 5178288415. Looks like a TU10 >with different style buttons on the control panel. > >Ashley > The TE10 uses the TE16 transport with a Unibus TM11 interface. The TU10 used the TU16 transport with the Unibus TM11 interface. The TE16 is the redesigned version of the TU16 with a better tape path, auto-rewind to BOT after tape load etc. The TE10 is the better unit although both are the same spec 800bpi/1600bpi (IIRC) and 45ips (or is it 45ips rewind speed?). I used to do a lot of Field Service on the DEC tape drives and the TE16 was pretty reliable -- with only the tape locking mechanism breaking (same part as one of the Kennedy drives). Bill Bill

21 years, 2 months

1
0
0 0

Rare Apples, eBay, Goodwill

by dwight.elvey＠amd.com

Hi I meant to jump in earlier when we were talking about the data formats on disk but got side tracked with work ( ick! ). It was mentioned that one could have no more than two concecutive zeros. It was mentioned that this was a speed issue of the disk. Actually there is another reason. The level of the signal from the disk is constantly changing. Think of driving over a rough road and you want to count the rocks but not the larger bumps. If you just set a fixed threshold on the shocks, every time you went over a bump, you would miss a bunch of small rocks while the suspension system was absorbing the larger bump. Now, if you made the system track the slower larger stuff, you could ignore the large bump and still see the rocks. The problem is that the system now sees the occational rock when there was none for some time because it is drifting along. By making sure that there are occational rocks, the system can stay adjusted to be most sensitive to the rocks without having false detects. The disk read is the same, it needs to see data >from the disk surface to keep the threshold detection circuit from having false detects from noise and random level shifts. Dwight

21 years, 2 months

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HP "Field Guide" ?

by cfandt＠netsync.net

Is there a "field guide" for HP 9000/300 systems like we have for DEC? I would like to find more info on, for example, the 98547A RGB video interface, 7958B Opt 550 disk drive unit, etc. Also, in my 9000/375 there is a board which fits into a smaller card guide assy (i.e., it is not the same physical size as the CPU and video modules, but smaller) which has a paper sticker with several numbers including the part number: A3057674-11. It has an 80286 CPU chip on it which leads me to think its some sort of I/O processor (?). No connector headers on the board; all connections go through the edge connector. Can't find anything while searching on the A3057 portion of the p/n (Axxxx is a type of part numbering scheme HP used for some boards and stuff) nor on many combinations of parts of the p/n. Thanks for your help. BTW, while perusing the 'Net through Google looking for DEC SCSI boards I found an RQZX1 (M5977) for Unibus for 'only' $2999.00 through a reseller <http://www.varx.com/MODULES.HTML>. A Qbus RQZX1 was pegged at the same price. Geeez, my wife is hoping to get only $2500 for her used 1993 Jeep Grand Cherokee with 106k. Maybe they'll take a swap plus a few bucks for either one? :-) Regards, Chris F. NNNN Christian R. Fandt, Treasurer Antique Wireless Association, Inc. Jamestown, New York USA email: cfandt at netsync.net Electronic/Electrical Historian URL: http://www.antiquewireless.org/

21 years, 2 months

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More Books today

by jrkeys＠concentric.net

The DHL truck came with 77 more books today and there were many good titles in the boxes. I picked two to pull for reviewing, digital PDP-11 Architecture Handbook 1983 and TTL Cookbook by Don Lancaster 1976 (fifth printing).

21 years, 2 months

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TU10 vs TE10

by wacarder＠usit.net

What's the difference between a TU10 and a TE10 DEC magtape drive? Ashley

21 years, 2 months

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unibus tape controller - pertec + tmscp?

by brad＠heeltoe.com

Just curious, Does anyone on the list have an extra unibus tape controller which has a pertec interface and emulate tmscp? I believe both emulex and dilog made such things. If anyone has one collecting dust and would like to bargain, please email me. I have an TS05 I'd like to try out. thanks! -brad

21 years, 2 months

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SBUS & ATM cards available

by pat＠computer-refuge.org

I've got the following available for $5/card + shipping: * 16 FORE SBUS SBA-200 UTP ATM card * 4 FORE SBUS PCA-200 UTP ATM card * 2 SUN SBUS ATM-155 UTP ATM card 501-2795 * 1 SUN SBUS GX framebuffer (CG6) 501-2018 (double-wide card) * 1 SUN SBUS framebuffer (CG6) 501-1481 (double-wide) * 1 SUN SBUS GX framebuffer (CG6) 501-1672 * 1 SUN SBUS framebuffer (CG6) 501-2325 * 3 SUN SBUS GX fameebuffer (CG6) 501-2922 * 4 SUN SBUS MG1 ECL framebuffer 501-1419 * 3 SUN SBUS AUI/BNC Ethernet card 501-1881 * 1 Interphase SBUS ATM card w/SC fibre connectors * 2 FORE EISA ESA-200 UTP ATM card * 1 FORE EISA ESA-200 SC/Fibre ATM card I'm in West, Lafayette, IN, US, zip 47906. Pat -- Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

21 years, 2 months

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pdp8/e Problems: KE8-E EAE debugging

by chd_1＠nktelco.net

I added support to SPCWR3.PA for the VC8/I. http://www.chd.dyndns.org/pdp8/VC8/SPCWR3_vc8i.PA This requires an EAE and now I find out that my untested EAE does not work. The first sign of problems was that the processor paused while running and the only way to stop it was to turn off power. The HALT switch did nothing. I got a copy of MAINDEC-8E-D0LB-D which is EAE test 1 and it locked up pretty much the same way. I removed the EAE and the diagnostic halted at a reasonable place insteading of locking up. The EAE stops the main processor sequencer and then does it's thing and when it is finished, restarts the processor sequencer. I seems to me that this handoff is not occuring properly. The front panel shows that the processor is stuck in Execute (E) State with a 7 in the IR and the PC within one of an EAE instruction. This not gonna be easy to fix. The over-the-top connectors prevent the use of an extender card, so I can't probe anything easily. Since the MAINDEC tests won't run, I will try to figure out which if any of the EAE instructions function and which to not. Since, so far, everything seems to hang, it might be something fundamental, and that might be easier to find. Suggestions, comments please. -chuck

21 years, 2 months

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History of notebook computers

by news＠computercollector.com

>>> It was a bit harsh, and I apologize. Thank you. Same here. >>> And I am glad that there are people like you around who can write authoritatively on a subject that non-tech people have trouble understanding. Well, that's just buttering me up. Thank you though. :) >>> I think the expectations placed on magazine writers are unrealistic and driven by profit and advertiser appeasement. There are always a minority of publications with lax ethics, as there are always a minority of companies with lax ethics in any business. Please don't let that or a famous case here and there lead you to think we're all a bunch of bastards. (Last time this topic came up, I used the analogy of "how would full-time computer nerds like it if I said you're all a bunch of socially clueless acne-face loners," which totally backfired on me because a few people replied and said "well that would be accurate...") Jay: I'm done now. :)

21 years, 2 months

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History of notebook computers

by news＠computercollector.com

According to Mobile PC magazine: http://www.mobilepcmag.com/features/2005_04/birthofnotebook.html Evan's personal homepage: www.snarc.net *** Tell your friends about the (free!) Computer Collector Newsletter - 700 readers and no spam / Publishes every Monday / Write for us! - Mainframes to videogames, hardware and software, we cover it all - W: http://news.computercollector.com E: news at computercollector.com

21 years, 2 months

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Which PDP?

by silvercreekvalley＠yahoo.com

Thanks for the suggestions. The 79 cutoff is really because I have a modest but working collection of machines from 1980-1990 (UNIX workstations) so I've got that covered. I thought I'd turn my attention to pre 1980's hardware before it becomes really difficult to track down and PDP is probably the obvious choice. The 11/34 looks a good choice at this stage? Regards Ian. __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/

21 years, 2 months

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History of notebook computers

by James＠jdfogg.com

> Hey, Mr. Fogg: I'm a reporter and a pretty serious computer > collector, too. > So, if it makes your tiny brain happy, go ahead believing > that anyone who isn't in high-tech must not be as smart as > you; that any idiot can be a good writer and researcher; that > I spend my day like the papparazzi desperate to fill pages; > and that it's all to inflate my ego. Oh, and that I'm one > step from selling fries at McDonalds, that sure was clever of > you. But you know what? > When your computer company has layoffs, that will be > something to write about too. Maybe then you'll be selling > fries, or worse, reduced to helping stupid users at Fry's. > At least they won't off-shore your job, you moron. My company did have massive layoffs - 2 years ago - due to Microsoft buying them. With 20 years of broad enterprise experience I've yet to be re-employed. I have a terminal illness that is beginning to show physical signs that HR people ask about, so re-employment is not likely. I cannot perform the job of fry chef as I cannot stand for more than an hour. In my blanket generalization of *magazine* writers (not newspaper reporters and book writers) I never made a claim of specific intelligence. In fact I labeled them as Journalism and English majors, not idiots that can't get a college degree. But my statement stands - they typically don't have the background to fully understand what they are writing about. Most magazine articles are written in a style that presents the author as someone knowledgeable in the subject of the article (a difference from reporters who present what they find and how they found it). Book authors usually *are* knowledgeable in the subject, and often partner with a writer to better present the material in a professional and understandable manner. My inclusion of a reference to fast-food workers was actually a vague reference to the stabs at certain professions such as Journalism/English repeatedly made in the comic strip "Dilbert". Some professions, such as music, acting and writing, have a stigma of early-career joblessness (how many actors were waiters?). It was a bit harsh, and I apologize. This has nothing to do with technocracy or elitism. I don't expect a lawyer or physician to build or fix their computer systems and I don't practice law or medicine. Consumer-grade tech magazines have become a vast wasteland of simplifications and brain-candy. I think the expectations placed on magazine writers are unrealistic and driven by profit and advertiser appeasement. And I am glad that there are people like you around who can write authoritatively on a subject that non-tech people have trouble understanding.

21 years, 2 months

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History of notebook computers

by news＠computercollector.com

Hey, if you agree with Fogg's assertion that ALL of the media are hardly qualified to ask "you want fries with that?", then I really don't give a (bleeped out) what you think. --- Doc Shipley <doc at mdrconsult.com> wrote: > Computer Collector Newsletter wrote: > > It's one thing to comment on a specific article, but there's no reason to > > indict a whole group of people and say that we're one notch about fast food > > workers. That is not only incredibly stupid, it's direct intolerance. He > > might as well have been talking about a race or religion or nationality -- > > which surely would not have been tolerated here. > > It might help your case if you didn't: > > A) Keep resorting to personal insults, and > > B) Keep proving the stereotype. > > Congratulations, Mr. Reporter! You're the very first Classic > Computers list member ever to make my killfile. > > > Doc > >

21 years, 2 months

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History of notebook computers

by msokolov＠ivan.Harhan.ORG

Joe R. <rigdonj at cfl.rr.com> wrote: > Things like that are exactly what gives reporters and the > like the image of being a bunch of incompetent boobs. ^^^^^ Boobs? Isn't our Mr. Reporter male? (Sorry, couldn't resist.) MS

21 years, 2 months

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Which PDP?

by silvercreekvalley＠yahoo.com

I'd like to include a PDP in my collection, but not sure what to go for? My requirements would be 1) It has to be a 70's design 2) It needs to be reasonably compact 3) I'd like to run something 'unix like' with a c compiler as an option. 4) My budget is not huge <$1000 Any recommendations? Cheers Ian. __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/

21 years, 2 months

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History of notebook computers

by news＠computercollector.com

So how of you out there saw my name in this RE: message and groaned, "not again..."? Hey, Mr. Fogg: I'm a reporter and a pretty serious computer collector, too. So, if it makes your tiny brain happy, go ahead believing that anyone who isn't in high-tech must not be as smart as you; that any idiot can be a good writer and researcher; that I spend my day like the papparazzi desperate to fill pages; and that it's all to inflate my ego. Oh, and that I'm one step from selling fries at McDonalds, that sure was clever of you. But you know what? When your computer company has layoffs, that will be something to write about too. Maybe then you'll be selling fries, or worse, reduced to helping stupid users at Fry's. At least they won't off-shore your job, you moron. --- James Fogg <James at jdfogg.com> wrote: > > Gee... lets just completely overlook the Apple Mac Portable > > and mention > > the Powerbook 100 instead... The Tandy 100 could've gotten > > a mention, > > even the Atari Portfolio could've gotten a mention too. > > > > Its times like this, you want to roll those mags up and shove > > it up the editors arse !!! ;-) > > Magazine writers are Journalism and English majors. They are one > paycheck away from "would you like fries with that?" The relentless > drumbeat of deadlines makes them desperate to fill their little part of > the magazine with anything that sounds good, or it's fry grease for > them. After a while they begin to believe their swollen ego. > > It's not just computer mags, look at all the hopelessly simplified (or > wrong) psychological advice given in women's magazines. > > Evan's personal homepage: www.snarc.net *** Tell your friends about the (free!) Computer Collector Newsletter - 700 readers and no spam / Publishes every Monday / Write for us! - Mainframes to videogames, hardware and software, we cover it all - W: http://news.computercollector.com E: news at computercollector.com

21 years, 2 months

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History of notebook computers

by news＠computercollector.com

I fully agree that the article wasn't very good, but Tom, I know you're more reasonable than this: you're directly accusing the magazine of including Sony because they are an advertiser?? C'mon... --- Tom Jennings <tomj at wps.com> wrote: > On Wed, 23 Mar 2005, Roger Merchberger wrote: > > Computer magazines are pretty consistently worthless today -- they > know only about sales. They could be selling wicker baskets, same > difference. New! Improved! Same but no different! > > > Their idea of the 13 "critical machines" to me is disappointing - The Sony > > Picturebook at best has had minimal market impact and is rarely seen > outside > > Japan; > > But Sony is probably a big advertiser. It's pretty much as simple > as that. > > > > > If you don't pick at it, it doesn't hurt :-) > > Evan's personal homepage: www.snarc.net *** Tell your friends about the (free!) Computer Collector Newsletter - 700 readers and no spam / Publishes every Monday / Write for us! - Mainframes to videogames, hardware and software, we cover it all - W: http://news.computercollector.com E: news at computercollector.com

21 years, 2 months

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code for the 4004

by dwight.elvey＠amd.com

Hi I have a friend that is working on some 4004 stuff. He is looking for the binary code for the prom set called A0750-A0758. Does anyone have this kind of stuff in their old ISIS disk collection? I believe this was mainly used on the SIM4-02 boards. If course, any software for the 4004 and/or the SIM4-01/-02 boards would be great as well. Dwight

21 years, 2 months

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