test-drb February 2011

test-drb@ccmp.vtda.org

155 participants
210 discussions

by nick.allen＠comcast.net

Anyone have any interest in purchasing this minicomputer (believe it is a Texas Instrument from 1972 used in manufacturing). It is missing the core memory box however. I have a friend who is thinking of selling it, I had no interest as it was missing the core memory, but maybe someone here will want it? http://lh4.ggpht.com/_lkddKjPsPFU/TUswHtRykbI/AAAAAAAAB6k/1ne8IFziAUU/s640/…

13 years, 10 months

OT: PC Virtualization Software

by feldman.r＠comcast.net

Some months ago there was a thread about setting up virtual machines on an Intel PC, where people recommended different software. I cannot locate that thread in the list archives, so I am asking once more for recommendations on virtualization software that people have found to be good. What I want to do is run multiple virtual Windows XP or Windows 7 (64-bit preferred) machines on a single Intel-based PC. TIA, Bob Feldman

13 years, 10 months

Visual 1050 systems for sale in Orange, CA

by d_cymbal＠hotmail.com

Disclaimer: Not my listing and I don't know the seller.? I was a little skeptical (10 systems?) and the asking price is not realistic. http://www.pennysaverusa.com/classifieds/merchandise/computers-printers/com…

13 years, 10 months

AVL road Runner computer

by stevenm＠optonline.net

Joe, Do you still want to know about the Road Runner? I came across your slightly old post today. Steve AVL road Runner computer Joe rigdonj at cfl.rr.com Tue Nov 4 15:22:13 CST 2003 a.. Previous message: Kaypro 2X starts up with silly display b.. Next message: Anybody know what this HP test board is for? c.. Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] -------------------------------------------------------------------------------- Last week I found an interesting looking computer in a scrap place. It was called a Road Runner and was made by AVL. I wasn't familar with it so I posted a question here on the CC list about it and no one knew exactly what it was but a number of people contacted me about it and wanted to see some pictures of it. Yesterday I went back and and bought it. I brought home and today I cleaned it up and took some photos. First, the system was made by Audio Visual Labs of Atlantic Highlands, NJ. Second, I ended up with TWO monitors, TWO floppy drives and a detachable keyboard even though the unit has a built in keyboard. After I bought the thing but before I left, I was looking around and found a bigger computer marked AVL Eagle (I THINK Eagle was the name on it). I opened it up and it looked like an S-100 chassis. It had 9 slots with 8 boards in it. Two boards had 8080 CPUs, three boards had Intersil 6204s (communications boards? and three boards had 2114 memory ICs on them. All the boards including the backplane were made by AVL. I'd already paid for my stuff and I didn't think this one was all that interesting so I left it behind. But my point is that I think I ened up with the keyboard, monitor and floppy drive from the second AVL system as well as those for the AVL Road Runner. Anyway here's the links to the pictures. The Road Runner computer <http://www.classiccmp.org/hp/avl3/avl-rr.jpg> and the back of it; <http://www.classiccmp.org/hp/avl3/avlrr-b.jpg>. Note the connector on the left that connects to the expansion box. Picture of the expansion box, front and rear; <http://www.classiccmp.org/hp/avl3/avlexp-b.jpg> and <http://www.classiccmp.org/hp/avl3/avl-exp.jpg>. Note the the floppy drive attachs to the expansion box and it appears that only one floppy drive can be used on the compter. Small VM-5 (5 inch?) monitor, front and back; <http://www.classiccmp.org/hp/avl2/vm5.jpg> and <http://www.classiccmp.org/hp/avl2/vm5-b.jpg>. Large VM-9 (9 inch?) monitor, front and back; <http://www.classiccmp.org/hp/avl3/avl-vm9.jpg> and <http://www.classiccmp.org/hp/avl3/mon-b.jpg>. The external keyboard; <http://www.classiccmp.org/hp/avl3/avl-kb.jpg>. The two floppy drives; <http://www.classiccmp.org/hp/avl2/fd1.jpg> and <http://www.classiccmp.org/hp/avl2/fd1-b.jpg>. I don't know which drive goes with which system but I don't thinkit matters since the drives appear to be very similar despite the cables coming out at different points in the box and the drives being painted different colors. Both drives are marked FD-1. It's not made by AVL but this patch panel was in the box with the AVL stuff.<http://www.classiccmp.org/hp/avl1/patch.jpg>. From the markings on it, I'd say that it was used with the Road Runner. OK that's it. Can anyone tell me any more about it? Joe -------------------------------------------------------------------------------- a.. Previous message: Kaypro 2X starts up with silly display b.. Next message: Anybody know what this HP test board is for? c.. Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] -------------------------------------------------------------------------------- More information about the cctech mailing list

13 years, 10 months

ADM3A Screen Rot

by trebor77＠execpc.com

I Have Three ADM3A's that sat in my Barn for Years. The Field mice made there home in two of them. One of those has a bad motherboard that might not be salvagable [Mouse Crap all over it] though I might soak it in warm water come Spring then blow dry and treat with 90% Isoprpyl alcohol but there is bound to be some Corrosion. One is still in the Barn but I plan on bringing it in when it gets WARM and see if I can SWAP the Top W/the CRT onto the one Unit that has a partially working M/B. It lights up my Breakout Box but Shows no Cursor but the tube Dies down to a Spot in the Middle when Turned off. I tried the one from the Bad M/B and it just Buzzed. If anyone is interested in the CRT's let me Know. If I can't get one working I can get something for the Aluminum Casings. But Maybe someone can use the CRT's. They look OK to me but I'm not familiar with SCREEN ROT. Shipping the whole Unit would be just to expensive. Maybe the One M/B is still useable???? Bob in Wisconsin

13 years, 10 months

Computer test equipment... Boardwalker 101/103

by pinball＠telus.net

Does anyone here use electronic test gear for repairing these old machines? I am trying to hunt down information (manuals, schematics, ROM images) on a device made by Micro Circuits called Boardwalker - models 101 or 103. The group of techs I keep up with have tracked down a few sets of ROM images (up to V2.50, Library V1.60), but no one has found a manual - so far. The device is handy in that it can test TTL and Eproms (up to 24 pin devices) in circuit by comparison to the built in library and it appears that you can add to the library too... Thanks! John :-#)# PS - if anyone is interested in electronic service tools I've included the link to the tech tools mail list & FTP site below -- How to subscribe or unsubscribe from TTL: http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive: http://www.vectorlist.org/

13 years, 10 months

ENIAC ....

by evan＠snarc.net

Hi all -- Obviously no one here "collects" the ENIAC, but it's certainly old enough to be on-topic. :) Having said that, here is a new site devoted to ENIAC -- www.the-eniac.com -- the six orange links up top are packed solid with useful information. Disclosure: it's NOT my site, but I was involved in its creation.

13 years, 10 months

OT: american vs european 220

by john_finigan＠yahoo.com

Chuck Guzis wrote: > Another artifact of earlier days in US industrial applications is > 55/110/220/440V 25 Hz distribution. The power transformers are huge > and the "hum" is more of a "rattle". Here in New Orleans, I am pretty sure that we still have 25 Hz drainage pumps in service, generated by a dedicated natural gas plant. Some of them may have been destroyed in Katrina, but searching around, I found some post-2005 news articles referencing the system. Apparently it relies on 60 Hz power for natural gas pumps, so it's still dependent on the local utility. The pumps seem to date back to 1920 or so. I don't know if the NYC subway system still uses any 25 Hz power or not. According to the book "New York's Forgotten Substations" they still had a few 25 Hz to DC synchronous rotary converters in operation as late as 1999! It would be unsurprising if they kept some of the 25 Hz system in place, feeding solid state rectifiers, but I don't know if they did. The power plant in Mechanicville, NY apparently still uses motor generator sets to convert its 40 Hz power to 60 Hz power they can sell. The plant is mentioned in a couple of IEEE articles, just search Mechanicville 40 Hz. Personally I think this is more amazing than our 25 Hz pumps. John Finigan

13 years, 10 months

Because it's there: 5 operating systems running on a IIfx (at the same time)

by derschjo＠mail.msu.edu

A random thought popped into my head this evening, and having nothing better to do (well, ok, I have quite a few things better to do to be honest) I decided to go with the impulse. The idea? I have a number of nubus Mac coprocessors and accelerators, amongst them: - An Orange386 PC coprocessor (16Mhz 80386, 4MB ram, CGA graphics) - A Radius Rocket Stage II (Basically a Quadra on a 12" nubus card, complete with 40Mhz CPU and 32mb of RAM) - A Symbolics MacIvory III (The coolest coprocessor ever -- a lisp machine on a card!) Could I run these all at the same time in my trusty Macintosh IIfx? The answer: Yes. (warning, 1600x1200 image): http://yahozna.dyndns.org/scratch/random/5OS.png That's a 40Mhz 68030 IIfx running System 7.6.1, the Radius Rocket running System 7.1, the Orange386 running DOS 5.0, the MacIvory running Genera 8.3, and just for good measure the IIfx is also running Tenon's MachTEN (BSD 4.3 running as a Mac OS process). I didn't leave it running like that for very long, as it's probably more than a bit stressful on the poor IIfx's power supply. But I just had to try it, thought you guys might get a kick out of it... - Josh

13 years, 10 months

XT-IDE PCBs have arrived

by lynchaj＠yahoo.com

Hi! The next batch of XT-IDE PCBs have arrived! If you were waiting please contact me at LYNCHAJ at YAHOO.COM http://wiki.vintage-computer.com/index.php/XTIDE_project Thanks and have a nice day! Andrew Lynch

13 years, 10 months

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test-drb February 2011