test-drb June 2009

test-drb@ccmp.vtda.org

233 participants
404 discussions

SLU's backpanel for one BA11-SB box (PDP-11/23 PLUS)

by tiggerlasv＠aim.com

I believe what you're looking for (at least for the KDF11-B serial connectors) is this module: http://scandocs.trailing-edge.com/micropdp11/volume1_system_cpus/EK-245AA-M… While there are probably 3rd-party modules out there, it is easier to find the real DEC bulkheads. Most of the DEC modules come with their own style of bulkheads. The DZV11 has it's own bulkhead, as does the DLV11-J The DHV11 bulkhead will also work on the DHQ11 You *could* build a custom ribbon cable to interface the DZV11 / DHV11 / DHQ11 bulkheads to work with the DEC standard 10-pin connectors, but it's easier just to find the proper bulkheads. Alternately, you could use just the mounting plate >from the various bulkheads, and install your own DB25 connectors, and 10-pin cables. T

15 years, 7 months

TI Silent 700 model 733 manual

by hamren＠sdu.se

> I also have a 733 without cassette drives (is that a different model #)? The model with the two cassette drives is the 733 ASR (Automatic Send/Receive) and the model without is the 733 KSR (Keyboard Send/Receive) > http://www.digibarn.com/collections/systems/ti-tymshare-100/DSC02096.JPG Is this really a 733? It does not look like one. According to the picture in my "Operating Instructions", the KSR looks identical to the ASR, except for the cassette driver, and it is not designed to be portable. But perhaps it's a 733 in a Tymshare carrying case. Does yours look virtually identical to the one on the picture? /Lars

15 years, 7 months

8" Floppies

by wmaddox＠pacbell.net

--- On Thu, 6/4/09, Rick Bensene <rickb at bensene.com> wrote: > I've got a batch of 30 brand new 8" Floppies that I can't > figure out. They are hard-sectored disks. > The weird part is that the index hole placement is strange > on these disks.? They are probably double-sided disks. The index hole sensor was offset on the double-sided drives to prevent the use of disks intended for singled-sided use only. --Bill

15 years, 7 months

Question on, A Historical Research Guide to the Microcomputer, 2nd Edition

by christian_liendo＠yahoo.com

Has anyone read this? Is it any good? http://www.lulu.com/content/159715 http://www.amazon.com/Historical-Research-Guide-Microcomputer-2nd/dp/141164…

15 years, 7 months

UNIX on PDP-11s (was Re: PDP 11/73 on the Internet)

by ethan.dicks＠gmail.com

On Thu, Jun 4, 2009 at 11:42 AM, John Floren <slawmaster at gmail.com> wrote: > Interesting, I didn't know a /23 could run V7--all I know for sure is > that it works on /45s and /70s. Do you know any other machines it runs > on? I'd like to try installing on my 11/73 (KDJ11-A) if possible. I think it would come down to disk drivers. If the kernel will run on an 11/70, there's no difference I can think of off the top of my head why it wouldn't run on a KDJ-11, unless there's something about the 22-bit Unibus mapping on the 11/70 vs no mapping on the Qbus. Disks, though... a 11/73 is likely to have an MSCP disk controller, but the 11/70 has quite a number of supported disk controllers. I'd look at the 7th Ed. sources and the install process to see what 7th Ed. is expecting to load onto. It's all part of the joy of vintage gear - you used to have to know exactly what you had and exactly what the software was looking for to have a successful install experience. More than once, I had to install on machine A, then either move the disk or the data on the disk to machine B because I couldn't install directly on machine B (most often due to tape drive/boot ROM issues). You might be able to scope this out with simh prior to gathering genuine hardware, but if you have the hardware lying around, you might as well try it. -ethan

15 years, 7 months

anyone read dealers of lightning?

by vern4wright＠yahoo.com

> From: Rich Alderson <RichA at vulcan.com> > Subject: RE: anyone read dealers of lightning? > > If you enjoy reading [_Dealers of Lightning_], also > read Soul of a new > > Machine, its about the creation of Data General and I > think that was an > > even better read. > > De gustibus non disputandum.? However, _Soul_ is very > much NOT about "the > creation of Data General", which was incorporated in > 1968.? It is rather > about DG's effort, c. 1976, to get to market with a > so-called supermini, in > order to compete with DEC's VAX (which was under > development at the same > time). > > I first read _Soul_ as a serial in _Computerworld_ in the > summer of 1977, and > enjoyed it enough that I put it on my Christmas list (hey, > I was still in > grad school and had no money for extra books). Even so... I also read _Soul_ about the same time, and bought many copies (in paperback) to give to friends who would ask me "what is it that you techies do? and why?". I particularly thought his exposition of "signing up" for a project was the most valuable part of the book. Kidder either used to live here in San Diego, or still does. Anyway, I had never met him (odd, since I am a major collector of books as well as of all sorts of computers) until last year when he was giving a talk at the Central Library about _Mountains Beyond Mountains_ (a very affecting book in itself). I pulled out my last remaining copy of _Soul_ (paperback, someone walked off with the hardback) and took it down to have him sign it. He barely recalled the book that won him the National Book Award and the Pulitzer (OK, it HAS been 30 odd years) and told me that he had changed his approach to research and writing. But he kindly inscribed the book to me and went on to give a great talk about Dr. Paul Farmer (the subject of _Mountains_). It was a Very pleasant evening. Vern Wright

15 years, 7 months

SLU's backpanel for one BA11-SB box (PDP-11/23 PLUS)

by tiggerlasv＠aim.com

Sorry about that -- I forgot that the BA11 doesn't have those bulkhead openings on the back door. Let me guess -- the back door is just a solid piece of metal, with a small adjustable slot towards the bottom, to allow cables to pass through. . . If that is the case, then what you would do is to obtain one of the metal bulkhead frames that they use for expansion on the q-bus & unibus boxes. It's basically a rack-mountable metal piece, with a bunch of bulkhead openings on it. I don't know the DEC part number for that, but someone with a DEC Systems & Options catalog >from say. . . 1986 . . . would be able to help you.

15 years, 7 months

Inappropriate remarks (Was Fwd: Mystery object... )

by fsmith＠ladylinux.com

On Thursday 04 June 2009 15:05:10 cctalk-request at classiccmp.org wrote: This list is a HOBBY .. watching you guys go back and forth on this is annoying and NOT a Hobby. The point is made. One side finds humor in bad times (Good Trait) One side finds such humor offensive (Another Good Trait) You are both within your rights. But what any of this had to do with classic computers is beyond me. Now if this was the bruised egos mailing list .. > Good lord. ?Find a hobby, eh? > > ? ? ? ? ? ?-Dave -- Kindest Regards, Fran Smith CEO "No Problems Only Solutions" L.B. Network Consultants LLC. Baltimore, Maryland

15 years, 7 months

TI Silent 700 model 733 manual

by hamren＠sdu.se

Hi, Bob > "Model 732/733 ASR/KSR Maintenance Manual Sound like what I am looking for. > I'll try and get it over to Al to be scanned if he has the time. Excellent! I look forward to that. I will contact you off-list. /Lars

15 years, 7 months

Inappropriate remarks (Was Fwd: Mystery object... )

by christian_liendo＠yahoo.com

This is not dealing with tragedy, this is just tasteless. I can understand humor (I am a big fan of lowbrow humor myself) to try and deal with a tragedy, but this is not the example. There is also a time and a place for everything, the time is to close and this is not the forum. What was said was tasteless and the only thing it did was reflect poorly on those who wrote it. --- On Thu, 6/4/09, Sridhar Ayengar <ploopster at gmail.com> wrote: > > Humor is one way of dealing with tragedy and it always has > been. > > Peace...? Sridhar >

15 years, 7 months

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test-drb June 2009