test-drb April 2002

test-drb@ccmp.vtda.org

280 participants
1162 discussions

by pat＠cart-server.purdueriots.com

I am looking for some sort of service manual or something on two Power supplies I picked up yesterday at Purdue Salvage. The first one is a HP 711A 'adjustable AC/DC power supply', which is fairly old and tube-based. After plugging it in, nothing happens - no filaments light up, etc. I haven't had time to go through and 'probe' it to see if the transformer is still OK yet, that's my next step. If anyone has any info on it, please drop me a line. BTW I've checked the fuse. The second one is fairly new - a HC Power Model HC10-1A switching 5V, 200A power supply. I think it was manufactured in 1992, making it 'just classic' as far as electronics go. I've taken it apart, and the line-side smoother caps are charging up, so I'm guessing a control problem. I'm going to try and contact Power-One (they aparently bought out HC Power) tomorrow to try and get info on it. I would really like to get this working so that I could try and use it for my new SSI/MSI (perhaps a few PALs if necessary) minicomputer I'm designing. [Aside: If they'd only give me some sort of course credit towards my BSCompE for doing this, I'd be really happy.] -- Pat

22 years, 9 months

Gould 9540 PSU

by red＠bears.org

I've recently inherited a Gould 9540 (8 MHz MC68000 CPU, Multibus) which would appear to run some sort of UNIX variant (System III, if I had to guess) I'd like to check it out, but the system sports a rather large sticker on the back panel which states it was wired at the factory to run on 240V. Before I spend a lot of energy trying to figure out whether it's still true and how to strap it for 120V operation, I thought I'd ask if anybody knows how to tell, off the top of his or her head. ok r.

22 years, 9 months

OT: BLAME WHO????????? (Warning: Possible Humor)

by rigdonj＠cfl.rr.com

BLAME WHO????????? Let's see if I understand how the world works lately... If a man cuts his finger off while slicing salami at work, he blames the restaurant. If you smoke three packs a day for 40 years and die of lung cancer, your family blames the tobacco company. If your neighbor crashes into a tree while driving home drunk, he blames the bartender. If your grandchildren are brats without manners, you blame television. If your friend is shot by a deranged madman, you blame the gun manufacturer. And if a crazed person breaks into the cockpit and tries to kill the pilot at 35,000 feet, and the passengers kill him instead, the mother of the deceased blames the airline. I must have lived too long to understand the world as it is anymore. So, if I die while my butt is parked in front of this computer, I want you to blame Microsoft and Bill Gates ...okay?

22 years, 9 months

NEC Multispeed boot error... what now?

by rfallaw＠marketorder.com

I am hoping you can send me in the right direction for restoring this very old laptop that my father gave me. It is posting a message that reads as follows: Fixed disk setup (1701) incomplete. Trying to boot from A drive: Warning!! Fixed Disk Controller is bad or Low Power, Can not boot up from fixed disk, insert system disk drive A or B... Press any key when ready.... What precisely do I need to look for when getting a system disk for this computer? It didn't have anything in the original bag it came with. The screen reads as follows when I turn on the computer: Phoenix ROM BIOS Version 2.51 Copyright (c) 1984,1985,1986 Phoenix Technologies, Inc. NEC Multispeed Please offer any guidance you may have! Thanks for you time! Rose

22 years, 9 months

Fuse PROM (was:: TTL computing

by csmith＠amdocs.com

> -----Original Message----- > From: Fred Cisin (XenoSoft) [mailto:cisin@xenosoft.com] > How about using circuit breakers? > Then you would have a manually erasable PROM, without further > expenditure > each time that you program it. Ok, that's something I hadn't thought of. :) Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

22 years, 9 months

Fuse PROM (was:: TTL computing

by csmith＠amdocs.com

> -----Original Message----- > From: Ben Franchuk [mailto:bfranchuk@jetnet.ab.ca] > > Erasable would not be feasable, other than manual recreation. > Why not use reed relay switches with a hidden magnets behind them, > slighty smoked to look like fuses. I thought about using relays -- wouldn't that make it a RAM, or do these relays stick somehow when there's no power? Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

22 years, 9 months

DC Metro (was: Questions regarding Tom Shoppa.

by healyzh＠aracnet.com

> Tim does live outside of Bethesda and one of the major metro > lines does go up through Bethesda. I'd guess that a lot of the > people that live in his area probably don't use it much though as > it's a pretty nice area and the closest metro stop is likely to be > far enough away to be at least a pain to use regularly. That's one cool station! As I recall it's something like 10 stories underground! That makes for one MAJOR escelator <sp> ride! There used to be an Egghead store a few blocks from the station. I've still got the 14.4k Practical Peripherals external Modem I bought there 10 years ago. I purchased it so I could download Linux software (which I'd been running for a few months) faster. Geez, it just hit me, that means that I've finally passed the 10 year mark for Internet usage (yes, I realize I've not been online as long as a lot of people here). Zane

22 years, 9 months

Ready for another junk ^H^H^H^H er,ah, computer feast? (Central Florida)

by rigdonj＠cfl.rr.com

Hi All, I just talked to Eric Smith and he's going to be visiting this area (Orlando) around May 17 or 18. I thought it might be a good time for another Junk Feast. Let me know if you're interested. Joe

22 years, 9 months

DEC SDI drives (was Re: should I take RM03's ?)

by pete＠dunnington.u-net.com

On Apr 11, 11:17, Bill Pechter wrote: > Never saw an RA80 in the field... > > I'm not sure they ever shipped. Several resellers list them, and at least a couple of sites list them as having been in use. -- Pete Peter Turnbull Network Manager University of York

22 years, 9 months

Questions regarding Tom Shoppa.

by Antonio.Carlini＠riverstonenet.com

I found the images too: ftp://ftp.trailing-edge.com/pub/cd-images All still there. There seems to be a new CP/M one there too (judging by the filename). Antonio

22 years, 9 months

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test-drb April 2002