test-drb May 2002

test-drb@ccmp.vtda.org

246 participants
947 discussions

[CCTECH] QBUS backplanes, potentially free for shipping

by thompson＠new.rr.com

I will probably have some empty BA213 QBUS housings available free for shipping. I will know if I want to grab these if I find anyone interested in them and if I can find a box big enough to hold them as I have little use for them myself. One is a pedestal enclosure which orignally housed a DECserver 500 and features 12 slots of Q-CD goodness and a single H7868 power supply. I mention this because it appears that DEC shipped some sort variation of the 213 for the DECserver 500 which did not support a second power supply. The spot for the card edge backplane connector is there where the second H7868 would plug in but no connector is present. Obviously it would not be a big trick to rig some sort of separate power supply for drives or tapes. The other unit is from a rackmount DECserver 550 and appears to have a more normally configured BA213 with space for two working power supplies, although none are included. Either of these units might help give your QBUS Microvax some Q22 breathing room. On a related note, I recall that there was some ability to convert the KDJ11 module for this DECserver into a working PDP 11/xx (83+?) with a PROM swap? Does anyone know more about this and its feasibility? Paul -- _______________________________________________ cctech mailing list cctech(a)classiccmp.org http://www.classiccmp.org/mailman/listinfo/cctech

22 years, 2 months

The Secret Life of Vector Graphics

by spc＠conman.org

I sent this to the CCTECH list maybe six hours ago and haven't seen it yet. I figured I'd try to the CCTALK list just in case, and it is definitely on topic. This webpage goes over the inner workings of a vector graphics generator (as used in arcade games circa 1979-83). Quite interesting: http://www.jmargolin.com/vgens/vgens.htm -spc (Enjoy ... )

22 years, 2 months

IBM 5100 on Ebay

by norm-classiccmp＠docnorm.com

Most likely everyone who'd be interested in this has already gotten notice of it from their saved searches, but ... take a look at http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2026242813 It's a 5100 with BASIC only. As I write this, the auction has 9 days to go and bidding is up to $995 ... yow! Norm

22 years, 2 months

[CCTALK] [CCTECH] scanners & circuit boards...

by Lee.Davison＠merlincommunications.com

Since we are talking about scratched glass, do you have any ideas on how to remove scratches from the face of a CRT? I use Jewelers rouge I got from a Jeweler friend many years ago. It works well on surface scratches such as those you get from laying the monitor on the tube face. Lee. ---------------------------------------------------------------------------- ---- This email is intended only for the above named addressee(s). The information contained in this email may contain information which is confidential. The views expressed in this email are personal to the sender and do not in any way reflect the views of the company. If you have received this email and you are not a named addressee please delete it from your system and contact Merlin Communications International IT Department on +44 20 7344 5888. ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________

22 years, 2 months

TK50Z-GA and MicroVax 3100/90?

by csmith＠amdocs.com

> -----Original Message----- > From: Ethan Dicks [mailto:erd_6502@yahoo.com] > Perhaps. Large RD-series drives are somewhat rare these days. I will say that with a (pretty common) seagate 40M disk, you can get a bare install of VMS 5.5 on there, and that's more than enough to drive a tk50 and transfer files to other systems over DECNet. Could also netboot it from the other system. > single memory card over 4MB (and only one ethernet module). The uVAX Really? I don't believe I've ever seen one without the ethernet module. That is to say, the cable that comes out of the ethernet ports on all of the ones I've seen is always plugged into something. I know that the ethernet was optional, and that the co-ax/aui ports were there whether the board is there or not. > MMJ adapter is also somewhat hard to find unless you get it with the > computer (it fits over the DA15/DE9 and give you three serial ports > from the mouse/keyboard/console ports) Were they sold apart from the systems? I wouldn't expect them to be available in most cases apart from a system that was sold as a MicroVAX. That said, DEC was supposedly very prolific with these systems, and you ought to be able to get plenty of parts for them. The extreme configurations (color graphics, 8/12[?]MB memory options, etc) are going to be more difficult. The median seems to be b&w VAXStation, ethernet, 4M RAM option. That kind of thing ought to be pretty easy to find. The "box" that the 2000s set on, which exposed the SCSI port, etc, is a bit harder to find, but there are a few around. More common on the "MicroVAX" variant, so if you have the choice, go for one of these. (Unless, of course, the VAXStation would give you the color framebuffer, or a large memory board) Also, you have a better chance of finding a disk in the "MicroVAX" systems, too. The VAXStations (more common too, I think) were lots of times run diskless. It's interesting, because they put "load boards" in them for that. Basically these are resistor packs that load the PSU up so that it won't panic due to the lack of disks. They're nice to have for -- for instance -- running a system with no disk, or use with Wolfgang Moeller's SCSI drivers for these systems. (Which I've not tried yet, but will eventually, supposedly, you can put SCSI disks in them that way. It's _very_ unsupported, of course :) > If all you want is a disk formatter, though, a uVAX-2000 with no > ethernet, 4MB of RAM and no disk should be cheap. Honestly, any 2000 you find will probably be reasonably cheap (like in the $20 range, max) At best, you'll find one in a scrap pile somewhere. They're solid systems, so even if it's gotten left in a warehouse for ages, I wouldn't expect much trouble with it. Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

22 years, 2 months

[CCTALK] [CCTECH] scanners & circuit boards...

by dwightk.elvey＠amd.com

>From: ard(a)p850ug1.demon.co.uk >Subject: Re: [CCTALK] [CCTECH] scanners & circuit boards... > >> Hi Tony >> You can order the right stuff for optical work from >> places like Newport Glass and William-Bell. You can also > >Anyone know a UK equivalent -- a company that sells optical abrasives? >And for that matter optical adhesives and glasses? Or can I assume that >because almost no real science/engineering is done over here any more >that such companies don't exist? > >-tony > > Hi Tony You might contact Stephen Tonkin at webmaster(a)astunit.com. He is in the UK and is also a telescope maker. I'm sure he can point you to some place with supplies. I'm not sure what Doc is talking about with Cerium oxide. It cleans up well and is a little off white in color ( sometimes a little yellowish ). Rouge is really messy and will stain everything. I've not worked wit chromium oxide so I can't say it is better or worse that cerium oxide but I don't know how it could be a powder and be any better. Dwight

22 years, 2 months

Free stuff!

by root＠diablonet.net

Hi everyone! I'm not sure if this list is even active anymore, but let's hope that this message will get routed to its proper destination. Essentially, I'm cleaning out part of my basement, and I have a ton of stuff that I really don't want anymore. I am offering it free of charge to anyone willing to come out to Kalamazoo, Michgan and pick it up. Here's what I've got: * IBM PS/2 Model 50Z, partially stripped. * NCR System 3300, no HDD (scsi), floppy, or MCA cards. * DEC VT420, some scratches on screen but works AFAIK. * Apple Power Mac 7200/90 and 7200/120, stripped, although if someone wants them, I'll put them more or less back together sans RAM and HDD (scsi). * IBM ThinkPad 750 laptop, for parts. * Compaq Contura 420CX laptop, for parts. * Toshiba T3100 (gas plasma screen) laptop, for parts. * Roughly three large cardboard boxes full of boards, including some of the following items. 1. 8088, 8086, 80286, 80386, and 80486 motherboards and CPUs 2. LOTS of ISA cards, including video, I/O, hard disk controllers (even some hardcards), LocalTalk cards, networking, etc. 3. Some VLB cards, mostly video, although some I/O and hard disk controllers are also around, I believe. * Data General dual 5.25" floppy drive, rack mount. I don't know if it works or not, but it seems to be in good condition. * USRobotics TotalControl rackmount chassis with network management card, around 15-20 modem cards, dual power suppies, and some other stuff. I've got a bunch of cables for it, too. I'm currently using it as a table, but if someone wants it, I'd be glad to get rid of it. :) * Token ring hardware -- lots of nice 3Com/Madge/Proteon cards and some MAU/CAU units. * Some other stuff, maybe -- PS/2 Model 5x and 70 systems, Commodore 64 equipment, etc. In general, I've got a TON of stuff sitting around here that I'd really like to get rid of. If there's no interest, most of it's going to go in the trash in a couple of weeks here. If you might be interested in paying me a visit (or having a proxy do so), please contact me and we can get something worked out -- I hate throwing stuff away, but I really want the space! Thanks! Sean BTW -- I've also got a fully loaded, functional PDP-11/34a system in my basement and a broken RX02 dual 8" floppy drive laying around. I'm not really looking to get rid of it PER SE, but I do realize that I will probably never do much with it. Therefore, if anyone might be interested in making trades of interesting equipment (e.g. larger SGI systems, LISP machines, strange Xerox computers, etc), please contact me as well, and perhaps we can get something worked out! -- Sean Caron http://www.diablonet.net scaron(a)engin.umich.edu root(a)diablonet.net

22 years, 2 months

[CCTECH] Secret life of Vector Generators

by spc＠conman.org

This webpage goes over the inner workings of a vector graphics generator (as used in arcade games circa 1979-80). Quite interesting: http://www.jmargolin.com/vgens/vgens.htm -spc (Enjoy ... ) _______________________________________________ cctech mailing list cctech(a)classiccmp.org http://www.classiccmp.org/mailman/listinfo/cctech

22 years, 2 months

need a map through the MSV11 Qbus memory jungle

by gunther＠aurora.regenstrief.org

[This is a repost because classiccmp ignored it the first time around. I tries cc to cctalk just to test. And copy to Jay West to be sure he gets an exact copy of the message I'm sending.] Hi, in my VAX 11/780 I have the PDP-11/03 alias KC780. And it has the following memory board right now: M7944 MSV11-B Q 4-Kword 16-bit MOS RAM (external refresh) But, since I'm planning to upgrade to an 11/785 I need additional RAM. When it showed up on ePay I buyed a M8044-DA MSV11-DD Q 32-Kword 16-bit MOS RAM but the boot program will not load with this. Why would that be? From the error I got it appeared as if may be there is just some jumpering to do, but I have no clue as to where and what. Looking at the UNIBUS/Q bus field guide beginning from M7944 and then scanning forward to the next MSV11 I find: M7955-AD MSV11-CD Q 16-Kword 16-bit MOS RAM with on-board refresh and then the family of M8044s M8044-AA MSV11-DA Q 4-Kword 16-bit MOS RAM M8044-AA (Also M8044-AB, -AC, -AD) M8044-AA Refs: EK-MSVI1-OP, MP-00566 M8044-BA MSV11-DB Q 8-Kword 16-bit MOS RAM M8044-BA (Also M8044-BB, -BC, -BD) M8044-BA Refs: EK-MSVI1-OP, MP-00566 M8044-CA MSV11-DC Q 16-Kword 16-bit MOS RAM M8044-CA (Also M8044-CB, -CC, -CD, -CE, -CF, -CH, -CL, -CM) M8044-CA Refs: EK-MSVI1-OP, MP-00566 M8044-DA MSV11-DD Q 32-Kword 16-bit MOS RAM M8044-DA (Also M8044-DB, -DC, -DD, -DE, -DF, -DH, -DL, -DM) M8044-DA Refs: EK-MSVI1-OP, MP-00566 Does that mean that I should have the M7955-AD RAM instead? This is confusing. And I'm not even asking for Q22 bus or PMI memory stuff. What's the thing I'm missing? thanks, -Gunther -- Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org Medical Information Scientist Regenstrief Institute for Health Care Adjunct Assistant Professor Indiana University School of Medicine tel:1(317)630-7960 http://aurora.regenstrief.org -- Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org Medical Information Scientist Regenstrief Institute for Health Care Adjunct Assistant Professor Indiana University School of Medicine tel:1(317)630-7960 http://aurora.regenstrief.org

22 years, 2 months

AMD 2901 Microcode Meta-Assembler

by dwightk.elvey＠amd.com

>From: "Ken Seefried" <ken(a)seefried.com> > > >Does anyone know of a free or cheap, usable meta-assembler for AMD 2901 >microcode? Or anyone have one they want to get rid of? > >Ken > Hi Ken I wrote one once in Forth for a 2901 project. It was relatively trivial ( at least in Forth since the essense of Forth is to change Forth into the application and not to write the application in Forth ). It would be difficult to have a good general purpose meta-assembler since the variety of ways to wire up a bitslice are so great that a "one size fits all" would be difficult. In my case, I just coded up the bit fields of my controller ( some of the bits ran outside hardware ) with meaningful names. It put things into a binary image file that I first blew EPROMs with and later, after debug, faster ROMs. I was years ago but these really are not that hard to write. Dwight

22 years, 2 months

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test-drb May 2002