test-drb May 2000

test-drb@ccmp.vtda.org

172 participants
541 discussions

by mrbill＠mrbill.net

I've got the following assortment of PDP-11 boards and CPUs that have been sitting around for a couple of months; I'd like to see them go to a good home. Trades preferred, altho I'm not looking to get much out of these, just would like to see them being used somehow. Marked on handle: Other markings/desc: ----------------------------------------------- M7270 KD11-H LSI-11 CPU 18-bit M7270 KD11-H LSI-11 CPU 18-bit M7270 KD11-H LSI-11 CPU 18-bit M8186 KDF11-AA 11/23 single board with MMU M8186 KDF11-AA 11/23 single board with MMU M9400-YE REV11-C 240ohm terminator, cable connector M9401 (connected to M9400 with ribbon cable) M8013 RLV11 RL01 disk drive controller (1 of 2) M8014 RLV11 RL01 disk drive controller (2 of 2) I've got some other cards as well, but this is all I can find for now. If anybody's interested in these, please let me know. Bill -- +--------------------+-------------------+ | Bill Bradford | Austin, Texas | +--------------------+-------------------+ | mrbill(a)sunhelp.org | mrbill(a)mrbill.net | +--------------------+-------------------+

24 years, 2 months

Some stuff already claimed

by af-list＠wfi-inc.com

Hi, To save you some typing, here's what's already spoken for: -> The BASIC Handbook, David Lien -> Problem Solving Principles for Basic Programmers, William Lewis -> Soul of CP/M, Waite -> CP/M Assembly Language Programming, Barbier -> CP/M and the Personal Computer, Dwyer -> CP/M Word Processing -> 68000 Assembly Language Programming, Leventhal Dilog SQ706A QBUS SCSI Card - $25 Emulex TC03 QBUS Pertec Controller - $10 DEC DEQNA Ethernet Card w/cable and manual - $10 DEC RQDX3 w/manual - $10 RT-11 v5.4B on RX50 floppy, complete distro - $10 Cheers, Aaron

24 years, 2 months

the latest virus

by ghldbrd＠ccp.com

Hello, friends the pranksters strike again . . . Makes me appreciate havimg my Amiga. Gary Hildebrand

24 years, 2 months

HP calculator thermal printheads (HP82143, etc)

by pete＠dunnington.u-net.com

On May 6, 11:54, technoid(a)cheta.net wrote: > In order to make fine traces with Nickel Print conductive paint I used > paper matches. Yeah, the kind you light your Camels with. > > Cut the base of the match off at a 45' angle. This gives you a nice point > and the paper holds enough paint to make a halfway decent brush. They are > only good for a trace or two so have a full pack handy. I find a good-quality No.2 artist's brush (not smaller) will have a very fine point and do an excellent job. > I've used tape to cover the traces but when you peel the tape up you peel > the traces with it. The scalpel approach works pretty well but leaves > ugly traces and is hard to do once the paint is dry. I use the matches > and the scalpel together in real-time so I'm scraping at wet paint. I perhaps have an advantage in that I learnt to retouch photographic negatives (and prints) with a scalpel and retouching brush. PCB traces are easy by comparision. You don't try to scratch through in one go; rather try to gradually pare down to the substrate. > >Ugh, that is exact same thing what I did many times in my retired > >compaq LTE 386s/20 on one of two keyboard cable. Is there a better > >quality kind than this conductive paint I got? Then name one! I don't know what kind you've got :-) The kind I use is silver-loaded, and seems to stick well, and work well. It's made in the U.K. -- Pete Peter Turnbull Dept. of Computer Science University of York

24 years, 2 months

Stragglers to that last post...

by af-list＠wfi-inc.com

I forgot the following, pick-up only: Sparc 1 - free SparcPrinter - free (2) Sun 3/50's, 1 working w/12 megs ram, one flat and one dimple top, 1 kbd/mouse set - free Sun type 5 keyboard - $10 Sun Type 4 mouse ("sticky") - $5 Thanks, Aaron

24 years, 2 months

value of RK05

by allisonp＠world.std.com

>>First thing I have to do is another 4k of core, the 4k I have is not >>quite enough to work in. The alternate is to make a RAM card >>using 32kx8 parts. > >Ooh, two parts and you're done :-). (Sorry, couldn't resist. Of >course most of the cost is getting the gold-plated fingers on the PCB, >in my experience!) Not quite, you still need bus interface and buffering. I havent looked at PDP-8 memory interface to see how and what. I have one or two PDP11 proto/ww cards that with careful cuts for power and ground will work fine for omnibus. The trick is doing battery backup so it also behaves something like core. ;) Allison

24 years, 2 months

Space exploration stuff (with an old computer tie-in)

by netsurfer_x1＠hotmail.com

>Hmm... >While everyone is mentioning all these musuems that feature things like an >Apollo capsule, etc. I had to >wonder if there are any musuems which >contain an Agena >space vehicle (could be misspelled) or some kind of > >Skylab mock-up. I'm asking because my dad wrote some of >the programs >which ran Skylab, and he helped design the >Agena space vehicle, back in >the late 60's when he >worked for Lockheed Missiles and then Martin >Marietta. >He used a CDC-3400 at Lockheed and a CDC-6500 (I >believe, 6000 >series at any rate) at Martin... When I >first got interested in old >computers I heard more than >a few stories about SCOPE and COMPASS, and >SNOBOL, >though he used SNOBOL in 1970 at Tymshare on the SDS 940 >and >later on the XDS Sigma 7. He also did COMPASS >programming on CSU's >CDC-6600 in 1972, which they used >to teach assembly language programming. >For all the >DECheads on the list, he also worked on Tymshare's > >DECsystem-10's and 20's when they were brand-new; they >were what >replaced the SDS 940. > >Will J Well, I know that Space Center Houston/JSC in Houston has a mock-up (not quite life size) of Skylab. A bit of trivia: the Skylab itself was really nothing more than a Saturn 5 Third Stage that had been fitted with all the equipment. ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

24 years, 2 months

Space exploration stuff (with an old computer tie-in)

by xds_sigma7＠hotmail.com

Hmm... While everyone is mentioning all these musuems that feature things like an Apollo capsule, etc. I had to wonder if there are any musuems which contain an Agena space vehicle (could be misspelled) or some kind of Skylab mock-up. I'm asking because my dad wrote some of the programs which ran Skylab, and he helped design the Agena space vehicle, back in the late 60's when he worked for Lockheed Missiles and then Martin Marietta. He used a CDC-3400 at Lockheed and a CDC-6500 (I believe, 6000 series at any rate) at Martin... When I first got interested in old computers I heard more than a few stories about SCOPE and COMPASS, and SNOBOL, though he used SNOBOL in 1970 at Tymshare on the SDS 940 and later on the XDS Sigma 7. He also did COMPASS programming on CSU's CDC-6600 in 1972, which they used to teach assembly language programming. For all the DECheads on the list, he also worked on Tymshare's DECsystem-10's and 20's when they were brand-new; they were what replaced the SDS 940. Will J ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

24 years, 2 months

I wrote 'Nuke Redmond'

by xds_sigma7＠hotmail.com

Just to make this clear... I was not even trying to say in any way, shape, or form that microsoft products are "perfect" or the best or anything like that. I would find it hard to believe any app with more than oh 20 or so (arbitrary figure) lines of code can possibly be perfect... that's why stuff like Sun saying "oh there's x thousand bugs in Win 2K" kinda irritates me, because there are probably about that many in Solaris also. Or in any complex O/S for that matter. Heck, even IBM admitted that there were bugs in OS/390 recently, and that's a pretty staggering thing for IBM to admit that one of their mainframe operating systems has bugs... While I agree with people who say we deserve bug-free software, I am realistic enough to understand that bug-free software is a pretty impossible goal.. I'm happy if the vendor has the guts to admit when there are problems and then go and fix them... That's one of the things that DEC always had going for them, was that they were good at admitting problems and then fixing them. And there aren't any operating systems around without bugs.. Finally, the main reason I use microsoft products on my PC is that they support about every strange, random peripheral that I can pull out of some dusty cranny in the warehouse and the damn thing will actually WORK! This of course is also one of the reasons for a lot of the various problems that can occur, but I think if you're expecting total perfection on a PC, you're not being realistic. The very nature of windows, linux, and any other PC operating system works against reliability. What I mean is that the hardware and software are not >from the same vendor, so they aren't nearly as tightly integrated as they could be. That's why VMS for example is much more robust than windows... DEC designed the hardware, built the hardware, then wrote the operating system to work as closely as possible with the hardware. And because they built + designed the hardware in-house, they naturally had a far better idea of how it all worked and how to make the operating system fully utilize the hardware. And finally, for the record, the reason I dislike MacOS is not because its unreliable, its just because I hate how difficult it makes it to unistall programs and to add drives for new hardware. And I know that I might just not know something important, but I did RTFM and read about everything on Apple's website, so please don't think I'm just Apple-bashing. Will J ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

24 years, 2 months

Market value of minicomputers...

by xds_sigma7＠hotmail.com

Hmm.. So if common stuff like 11/35's are worth in excess of $6,000... does this mean I ought to start looking for a buyer for my extra Interdata 7/32C? Circa 1973, world's first 32-bit minicomputer, 750ns cycle, up to one meg of core, currently has 256k and 80MB of 14" winchester.. Far less common than an 11/35.. and more powerful too. And no, I'm not serious about selling it... since I didn't pay anything for it, I don't see how I could justify expecting to get money for it.. But that's my extra-weird opinion, one of those things that really isn't explainable or anything like that. Though I personally dislike the idea of them actually being *worth* something, the very fact that mini's have accquired value is a great help toward keeping them from being scrapped and vanishing from the earth... As for RK05's, I know a guy who can sell them for $5K each, but that doesn't mean I want to sell mine. I don't believe that all 11/34's were shipped with RL01/02's either, since mine is equipped with dual RK05's, which are both the same vintage as the machine. Also, if anyone wants an 8/A, complete and probably working, I saw a company who has one in inventory for like $500, far more than I'd pay, but if anyone's interested, e-mail me and I'd be happy to give you the info, and no, I have no relation to the company thats selling it nor do I stand to profit. Will J ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

24 years, 2 months

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test-drb May 2000