test-drb August 2003

test-drb@ccmp.vtda.org

280 participants
469 discussions

by abrandin＠adelphia.net

Hello Fritz, I am looking for various manuals: DPS 7 / various series / France DPS-90 DPS 9000 / French DPS 6 PLUS / series 402, 410, 420 / USA DPS 6 / various series / USA I would really appreciate any help that you could provide. Sincerely, Alice Brandin

21 years, 5 months

IBM 5100 tinkering

by hansp＠citem.org

We did some tinkering with our IBM 5100 the other day with results which might be of interest. Our 5100 is a model A4; it has 64Kbytes of memory and APL (only). When we opened up the beastie for a service a year or so ago and speculated on the fact that there were no empty slots in the card cage (we do seem to have every built-in option made) which led us to propose that perhaps the BASIC interpreter was also included but made unavailable by the absence of the language selector switch on the front panel. Examining the cable harness behind the panel showed a particularly thick section encased in insulation tape just behind where the language select switch would be installed and tempting evidence of one, possibly two unconnected wires. At that time we went no further. This week we were prompted to revisit the 5100 with a view of seeing if we could in fact run BASIC. Carfully cutting open the insulating tape around the cable harness behind the language select switch position revealed two unconnected wires complete with tiny push on connectors. We jumpered the two wires, powered on the machine and waited with bated breath. Following the familiar self-test display we were presented with an unfamiliar prompt, not the APL one at all. A little fiddling with the keyboard quickly confirmed that we had BASIC operational! So at least the APL only versions of the 5100 are configured with the BASIC interpreter which is disabled simply by the absence of the language select switch. Our IBM engineer speculates that the reverse is not the case : the BASIC only configuration does not include the APL ROM code. Anyone care to experiment and confirm that? We are now installing a language select switch (though alas not of the same type as the others) and look forward to playing with BASIC on the machine. Does anyone know the price difference between the A4 and C4 models? I would hazard a guess that that switch cost several hundered dollars at least ;-) Oh, what prompted us to revist the 5100? We recently acquired a Commodore PET 2001 and on compiling some techinal notes for it found a web site stating that the PET was 2 to 3 times faster than the 5100. That statemnet surprised me and I wanted to confirm it. Early indication show that the two machines are remarkably alike in performance (another suprise) the following program runs in the same time (to the second) on both machines : 10 a = 0 20 print a, a*a, sqr(a) 30 a = a + 1 40 if a < 100 goto 20 50 stop The 5100 seems about 30% faster on though with the following program: 10 a = 0 20 b = a*a 25 c = sqr(a) 30 a = a + 1 40 if a < 100 goto 20 50 stop So it seems it is the display which slows it down. Regards, -- hbp

21 years, 5 months

need EISA config util for Everex STEP

by bear＠typewritten.org

I have an Everex STEPcube (12-slot, 80486) that I need a copy of the EISA config utility for. Apparently this was available until about a year ago as a download from everex.com. The site is now defunct. Failing the "correct" ECU I could experiment with another ECU, given just the CFG file for the motherboard. That file would be on the ECU disk, but I could also use it by itself (!EVX0101.CFG), in the absence of the complete ECU. Can anybody help? Thanks! ok bear

21 years, 5 months

ALLIED SEMICONDUCTOR

by JOHN＠ALLIEDSEMI.COM

EG150S-V = $29.00 Power supply question Bryan Pope cctech(a)classiccmp.org Mon Apr 7 23:40:42 2003 a.. Previous message: H89 CP/M hard-secored boot diskette b.. Next message: Need info HP 28S c.. Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] ----------------------------------------------------------------------------- --- Hello all, Has anyone heard of the Enermax power supplys? The model number from the (now non-working) is EG150S-V. The special thing about this supply is its size: 4" W X 5" D X 2.5" H Thanks for any help!, Bryan ----------------------------------------------------------------------------- --- a.. Previous message: H89 CP/M hard-secored boot diskette b.. Next message: Need info HP 28S c.. Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] JOHN JOOST ALLIED SEMICONDUCTOR CORP. 800-834-0109 X101 DIRECT 469-241-9022 FAX 469-241-9825 JOHN(a)ALLIEDSEMI.COM

21 years, 5 months

Logic Analyzer Pod Probes / Scope

by cbajpai＠comcast.net

I'm buying a Tektronix Logic Analyzer that has pods, but none of the test leads from the pod to the probe. They don't come up ebay often and when they do they are very expensive, almost as much as the logic analyzer itself. Any ideas on alternative sources for used probes or other makeshift alternatives? Also, anyone got a cheap (but good) oscilloscope they want to sell? I need some test equipment to attempt to diagnose some vintage hardware problems. Thanks, Chandra

21 years, 5 months

Best way to Sell Old, Used Software and SW/dev Books w/little Collectible Value?

by dwallace＠m-net.arbornet.org

Hi, My first time posting here - apologies if I should have RTFM first on this topic. I have a mountain of dated (late 80s - early 90s vintage) and probably non-collectible software packages and books that it seems to me would be a waste to consign to a landfill. I mean stuff like: Clipper 5.2 Corel Draw (Win 3.1) Version 4 Quattro Pro for DOS Ami Pro for Win 3.1 Star Trek Screen Saver (ca. 1992) Borland C++ 3.1 for Windows and DOS with Application Frameworks Books such as "advanced c-struct programming" (OOP on C), Peter Norton's "Inside OS/2", Alan Holub's "Compiler Design in C", several different DOS and BIOS interrupt references, a book on device drivers for DOS (yechhh!)... When I think of all the money I squandered on this cr$p in past years so I could stay in place with idiot employers and not even advance, I want to go GAAAAH! I *also* want, if possible, to make a buck or two off the lot or individually, and remove it from my view and from my basement. The Rubbermaid containers it's in are probably worth much more than this stuff is worth. Maybe. I doubt that most of this stuff is even worth paying the advertising fee on Ebay, and there's a LOT of it. Maybe the thing to do would be to advertise a few of the "better" pieces (like the Holub book) on Ebay, and in that ad on Ebay link to "other articles for sale". Just to generate traffic from the Ebay placement. Ideas? Know of any brokers that would take the entire lot? Or, know of any Luddite communities that eschew sinful protected mode OSs in favor of simple, uncomplicated DOS and 286 level software that penalizes the sinful user with random lockups? :-) OK, that was reaching... Thanks!

21 years, 5 months

pdp-8 serial numbers...

by mross666＠hotmail.com

Can anyone shed light... my 8/L has a serial number plate on the rear, with *two* numbers stamped on it, thus: 1127 963 How does that decode? Which, if either of those, is the real serial? TIA Mike (Very busy renovating the corestore website - much much more old computer stuff going up in the next few days!) http://www.corestore.org _________________________________________________________________ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail

21 years, 5 months

Intel 310?

by Innfogra＠aol.com

I am finally back online. July is a busy month for me as I wear several hats at the Oregon Country Fair and it occupies me for more than a month. I still have 4 intel 310 chassis, I can't seem to part with them and I have no idea what to do with them. They are good for industrial control as mentioned. I ran across a pair of 310s in the communication room of Fiji Telecom that I think are still there. It is a great development chassis in Multibus 1. Six slot desktop, 5 1/4" floppy and HD and sometimes a 1/4' tape drive. In the 1980s there were lots of different Multibus cards out there. I am surprised there are few in collections. We probably did trash more than a hundred in the late 1980s when we were buying truckloads of intel stuff. We sold a huge lot to InBus in the early 90s. As to the question of cracking a Xenix System? I have yet to figure that out myself. I was hoping someone out there had the secret or did it die with Larry? Paxton Astoria, OR

21 years, 5 months

Want to buy Kaypro 10

by vcf＠siconic.com

I'm looking for a nice, shiny, clean, preferably working Kaypro 10 that I'm willing to pay decent money for or trade for something nice. If you've got such a thing and are willing to trade or sell it then please e-mail me. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

21 years, 5 months

Analog computer article

by mranalog＠comcast.net

Hi All, If you are interested in building your own analog computer or just interested learning more about how an analog computer works, I found a PDF version of a 4 part construction article on the web. The article, I believe, is from Practical Electronics Magazine (UK) (date unknown, probably late 1970s). The amplifiers are 741 opamps. And the amplifiers even have overvoltage indicators which is a sophisticated feature usually found only on commercial computers. Part 1 is how an analog computer works Part 2 is construction details Part 3 is wiring and testing and Part 4 is programming and special circuits The file 2.25 MB Kronis, P., "Analogue Computer", Parts 1, 2, 3, 4 http://patrik.unx.nu/tech/analog_dator/anacomp.pdf --Doug ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://dcoward.best.vwh.net/analog =========================================

21 years, 5 months

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

test-drb August 2003