test-drb December 2001

test-drb@ccmp.vtda.org

243 participants
1096 discussions

Anyone interested in a modem-design book?

by dpeschel＠eskimo.com

The local Barnes and Noble has one copy of this book: The Theory and Practice of Modem Design John A.C. Bingham Format: Hardcover, 1st ed., 480pp. ISBN: 0471851086 Publisher: Wiley, John & Sons, Incorporated Pub. Date: November 1990 It's not cheap ($160) but it looked reasonably meaty and I doubt it's easy to find. If anyone wants it, let me know. -- Derek

24 years

IBM 3274-61C controller

by rhblakeman＠kih.net

Well after some searching I find that this monster is a "controller" (I guess a terminal or network controller). Anyway I'm taking offers (shipping would be added to the offer unless you pick up in KY) for it - condition (other than good general external condition) is unknown, haven't even put a powr cord to it yet.

24 years

overclocking older processors

by mcguire＠neurotica.com

I was just reminded of when I overclocked an F11 chipset on a PDP-11/23 (KDF11-A) to 18MHz. It seems to me that it might be possible to overclock the 78032 on a KA630. Anybody ever done that? -Dave -- Dave McGuire St. Petersburg, FL

24 years

Ergo KB

by dhquebbeman＠theestopinalgroup.com

> Chris- > > Whew, sorry I forgot about you, with the list > being down, the depression nuked my recall. Oops! Sorry, meant to press the "private send" button... again... -dq

24 years

8" drives and PSUs.

by ard＠p850ug1.demon.co.uk

A non-text attachment was scrubbed... Name: not available Type: text Size: 1161 bytes Desc: not available Url : http://www.classiccmp.org/pipermail/cctalk/attachments/20011209/0497d7d3/at…

24 years

Remington Rand 409 (this already has been posted!)

by ae＠alum.mit.edu

I am helping to gather original documents and/or artifacts concerning the Remington Rand 409-series computers for the Remington Rand 409-series museum being set up in Rowayton, CT. The models of interest are the 409-2 and the 409-2R. These are tube, punch-card, and programming panel machines >from the 1950s. We are interested in documenting the location of all surviving artifacts, but also would like to acquire particularly interesting items by donation or purchase. We are looking specifically for anything related to the programming of these machines, such as the programming panels, programming manuals, or the programming jumper wires. Photographs or drawings of programming panels (originals or reproduced in third-party publications), with or without programs wired on them, also would be of interest. If you have any of the above, or have more general items such as Remington Rand brand computer tubes or punch cards, whether or not you wish to sell or donate them, please e-mail me at: egendorf(a)mit.edu. Thanks.

24 years

11/44 power problem... (Oh, not again...)

by mcguire＠neurotica.com

On December 9, Zach Malone wrote: > > Respectfully suggest, use your kid sister to probe the voltage > points. > > Waiting for the inevitable McGuire "is she cute?". I try to reserve that for the rescue list...less "offendable" crowd over there. ;) -Dave -- Dave McGuire St. Petersburg, FL

24 years

Ergo KB

by dhquebbeman＠theestopinalgroup.com

Chris- Whew, sorry I forgot about you, with the list being down, the depression nuked my recall. The S&H looks like $5, so $30 will take it. You can send those government agents with my funds to: The Estopinal Group attn: Doug Quebbeman 903 Spring Street Jeffersonville, IN 47130 Again, sorry about that! Regards, -doug q

24 years

11/44 power problem... (Oh, not again...)

by DSEAGRAV＠toad.xkl.com

Same machine, new problem. ^_^ Whilst out in the garage playing with the 44 (which I still don't have an OS for...), my kid sister and one of her friends come out to the garage to smoke. (They're not allowed to smoke in the house.) Anyway, while the 44 is running, her friend says, "Wow, that's loud!", to which Monica replies "This one's louder!" and turns on the KS10... You know what's coming. And we had christmas tree packages and such all over the garage, too, so navigating the garage in the dark was real fun... (For those who didn't see it coming, the garage breaker went...) Anyway, after resetting the breaker, waiting for the VAX to reboot, checking that the KS10 was still in working order (I wouldn't be mailing if the KS10 was broken. I'd be busy burying my sister. ^_^) and putting back all the boxes I stepped on or knocked over, it was discovered that the 11/44 no longer powered on. The power control lights are on, the RX02 and SCSI disks inside the case work, but the BA11 (Is that the right part?) will not turn on. When you turn the switch on the front panel, nothing happens. No click, no fans, nothing. The breaker on the back of the BA11 did not trip. I turned it off and back on, nothing happened. I ran the AC power checks in the manual and nothing happened. I checked the front-panel wiring was still connected, it was. I pulled and reseated the front-panel control board in the UNIBUS. Nada. It looks like it should be working, it doesn't smell burnt, and I opened the top of the BA11 power supply and looked inside, and it looks really scary (what, with the THIS VOLTAGE WILL KILL YOU stickers and wires thick as my fingers and whatnot...) but it doesn't look burnt. Is there a hidden switch or fuse or something in there? That's what it looks like... Failing that, someone got directions for checking out an 11/44 power supply? -------

24 years

iPDS questions

by mythtech＠Mac.com

>> There was an optional second processor board that you could install >> and it became a true dual processor machine. You could switch >> between the two processors with a hot key. Both processors could be >> independently compiling, editing, debugging, etc. > > Oh now THAT is cool. :-) > > Anybody know of any other systems to implement this sort of of >functionality? The same concept is used for the Mac's and their PC cards. The Intel chip is placed on a card, and it runs independant of the mac (but shares some features like drive controller, stuff like that). You swap between them with a hot key, and you can have things running on each (ie: start something heavy on the Mac, swap to windows/dos/whatever OS you are running, it is a true Intel compatible setup, and run things there.) Swap between as much as you want, each will continue to run, being blissfully unaware the other is there. Connection between the two is nice, you can have shared folders between them. The Mac will view it as a folder, the PC will view it as an additionally available drive. And you can cut and paste between the two. Very nice setup, too bad Apple abondoned them, and stopped upgrading the driver software, so they don't work too well past System 7.6.1 (they will work under OS 8 and 9, but some problems can arise) -chris <http://www.mythtech.net>

24 years

iPDS questions

by mcguire＠neurotica.com

On December 9, Zane H. Healy wrote: > > Anybody know of any other systems to implement this sort of of > >functionality? > > The DEC Rainbow has two different CPU's in it, however, I don't know if you > can run different stuff on each one at the same time. IIRC, it has a Z80 > and a 8086 so you can run different software (sort of like the > Commodore 128 running Commodore or CP/M software). I thought that was an 8088...but as far as I'm aware you can't run them independently. -Dave -- Dave McGuire St. Petersburg, FL

24 years

PDP 11/34 Console & cards

by fcharp＠rogers.com

All, Well, that was quick. The system is spoken for. Thanks to all for their interest. Regarding the DEC service CD: in fact, there are 2 CDs. They are full of manuals and service stuff, BUT they cover more recent equipment than the PDP. The last dates on the CD are 1994, which says that there is a lot of VAX-related material on the discs, but not much with regards to PDP. My apologies. Anyway, I already had a couple of requests for them, so I guess I'll be giving the ol'burner a run for its money. Cheers, Frederic Charpentier

24 years

Bubble sorts have their place

by ard＠p850ug1.demon.co.uk

A non-text attachment was scrubbed... Name: not available Type: text Size: 3696 bytes Desc: not available Url : http://www.classiccmp.org/pipermail/cctalk/attachments/20011209/db9cf3f8/at…

24 years

History of Computing exam question

by ard＠p850ug1.demon.co.uk

A non-text attachment was scrubbed... Name: not available Type: text Size: 1351 bytes Desc: not available Url : http://www.classiccmp.org/pipermail/cctalk/attachments/20011209/5a7554dc/at…

24 years

iPDS questions

by mcguire＠neurotica.com

On December 9, Dave Mabry wrote: > There was an optional second processor board that you could install > and it became a true dual processor machine. You could switch > between the two processors with a hot key. Both processors could be > independently compiling, editing, debugging, etc. Oh now THAT is cool. :-) Anybody know of any other systems to implement this sort of of functionality? -Dave -- Dave McGuire St. Petersburg, FL

24 years

11/44 power problem... (Oh, not again...)

by dhquebbeman＠theestopinalgroup.com

> Is there a hidden switch or fuse or something in there? That's what it looks > like... Failing that, someone got directions for checking out an 11/44 > power supply? Apples and Oranges, but Primes have an A/C distribution box in the back that the big round A/C plug goes into... this whole box removes from the chassis, and when disassembled, reveals a fuse inside along with something that looks like an EMI filter. The fuse is replaceable without soldering... ...but this is a Prime, not a PDP-11/44, but I'd look for something similar... -dq

24 years

Seeking info and parts for MicroVax II BA123

by tothwolf＠concentric.net

Well, after all the talk about a MicroVax II BA123 on the list lately, I managed to unbury mine. It appears to be all original except for 2 hard drives that may have been added as an upgrade. All the boards match up with the DEC sticker with handwritten board numbers. It has the standard cpu board, what seems to be a 2mb ram board, a serial interface board w/ 8 ports, and the standard scsi and tape interface boards. It also has some sort of loopback board in the upper 3rd slot. Does anyone have a link to reference info on these boards? I'd like to find a pair of 8mb ram boards and a network interface for this thing, so I can put it back in service for open source software development/testing. I don't know the part numbers for these boards, so any extra info would be great. I'm also looking for the door that covers the front control panel, as this machine seems to have lost its door at some point before I rescued it. If anyone has any of these parts laying around, please drop me an email. I'm more then willing to pay shipping. I really don't think I have much of anything anyone here would want as a trade, so I'm willing to pay for the parts too if required. Another interesting tidbit about this box, it still has its inventory sticker from NASA, and it orig cost good old uncle sam $22,000+. Anyone else wonder why they didn't have it outfitted with a network interface of somesort, especially with it costing that much already? -Toth

24 years

Stacking Apple ][ stuff

by pete＠dunnington.u-net.com

On Dec 8, 19:44, Ethan Dicks wrote: > --- John Lawson <jpl15(a)panix.com> wrote: > > Aluminium = non-magnetic Iron = magnetic in terms of marginal > > shielding from external fields. > > Do para-magnetic cows go "mu"? Oh, no, the list has been back up for an hour and already we have bad puns :-) Well done, Jay! I saw the archive come back a while ago, and I wondered when you'd get the list done. -- Pete Peter Turnbull Network Manager University of York

24 years

Apple Floppy Drives (was: More Apple Pimpers)

by erd_6502＠yahoo.com

--- "Fred Cisin (XenoSoft)" <cisin(a)xenosoft.com> wrote: > Here's what you need to do to get reliable results from Apple drives: > > > And I am probably a good test of real world abuse to the Apple Drive ][ > > drives, as I was just a wee child, and I didn't follow any rules that > > I probably should have... My former boss at Software Productions (we wrote kiddie software for home computers under the Reader's Digest label) put a story in an early version of the docs of how he fired up his Apple ][ to run CP/M and the disk drive made odd noises... he took it in for service and the tech extracted fragments of a Peanut Butter & Jelly sandwich. Seems his kids were playing games and eating PB&J and decided the computer must be hungry, too... It's not just oatmeal in the VCR... -ethan __________________________________________________ Do You Yahoo!? Send your FREE holiday greetings online! http://greetings.yahoo.com

24 years

iPDS questions

by Innfogra＠aol.com

In a message dated 12/8/01 7:23:23 PM Pacific Standard Time, healyzh(a)aracnet.com writes: > I just found a working iPDS system, complete > with documentation and some software. Unfortunately I don't think a lot of > it is still readable. I did get the system to boot and pass all > diagnostics. > > I know nothing about these beasties, from looking at the doc's it's > obviously i8085 based with 64k RAM. It's got a single 5 1/4" floppy, and > it's in a case slightly smaller than a Kaypro II. In the area behind the > CRT is a storage area for two pods that each handle two different sizes of > PROMs, these plug into a hole in the right side of the case. > Hi Zane; Nice find. I just dug out a couple iPDSs out of my storage locker that I am getting ready for sale. I may be interested in some copies of the documentation. I also have some disks but have not checked their condition. You are right that they are 8085 systems. Besides EPROM programmers there was also an EMV 51 emulator pod for IIRC debugging the 8051. There are also external floppy disk drives that daisy chain to it. It also ran CPM. I believe Fred's Xenocopy program will copy diskettes for it. IIRC they are standard 360K DSDD drives. Paxton Astoria, OR

24 years

Houston Classic Computers was {Off-Topic: Re: Anyone have a MicroVax II in a BA123 available?}

by msell＠ontimesupport.com

I don't know of a formal (or informal....) classic computer user group in Houston, but I would love to participate in one. I know that there are several of us in Houston. I met with David and Mitch recently; very nice people. David has a real neat collection of older "personal" computers and some other Unix-class boxen as well. Obviously there are more of us, an informal gathering would be neat. - Matt >Now, to change the subject of this thread, does anyone know of any >"classic computer" user groups in the Houston area? > >-Toth Matthew Sell Programmer On Time Support, Inc. www.ontimesupport.com (281) 296-6066 Join the Metrology Software discussion group METLIST! http://www.ontimesupport.com/cgi-bin/mojo/mojo.cgi "One World, One Web, One Program" - Microsoft Promotional Ad "Ein Volk, Ein Reich, Ein Fuhrer" - Adolf Hitler Many thanks for this tagline to a fellow RGVAC'er...

24 years

Stacking Apple ][ stuff

by mcguire＠neurotica.com

On December 8, Ethan Dicks wrote: > > Aluminium = non-magnetic Iron = magnetic in terms of marginal > > shielding from external fields. > > Do para-magnetic cows go "mu"? You are a sick, sick man. -Dave -- Dave McGuire St. Petersburg, FL

24 years

Stacking Apple ][ stuff

by erd_6502＠yahoo.com

--- John Lawson <jpl15(a)panix.com> wrote: > Aluminium = non-magnetic Iron = magnetic in terms of marginal > shielding from external fields. Do para-magnetic cows go "mu"? -ethan __________________________________________________ Do You Yahoo!? Send your FREE holiday greetings online! http://greetings.yahoo.com

24 years

Anyone parting with a Wyse 60

by mythtech＠Mac.com

Does anyone have a Wyse 60 they want to part with on the cheap? (working only please... I have a dead one thanks) I tried buying one on ebay a few times, and each time, either they were in horrible condition, or went above my price threshold, or I got "ebayed" at the last second by someone outbidding me. I would prefer one in the NJ area that I can drive and pick up as cost is my #1 issue, but if total cost (buy + shipping) isn't too bad, I will accept shipped ones. I might have stuff to trade, but most everything I have that is available to be parted with is PC related, which A: isn't as popular here, and B: isn't as hard to get as other systems. I do have a C64 or two (don't know functional condition), maybe some other stuff (like these Zebra 2500 manuals I keep tripping on) If you have something in mind, let me know, I will see if I have it. Thanks -chris <http://www.mythtech.net>

24 years

1961 build-your-own computer book

by mranalog＠attbi.com

I just recently found a cute little computer book called "I can learn about Calculators and Computers" by Raymond G. Kenyon, Harper & Brothers, 1961 112 pages. The chapters are entitled: How Early Man Counted and Computed The Story of Modern Computers Construct Your Own Calculators and Computers - - Oriental Abacus - John Napier's Bones - Slide Rules - "Stepped-Wheel" Calculator - Digital Computer - Analog Computer Materials used consist of wood, wire, D-cell batteries, flashlight bulbs, potentiometers, etc. Remember wooden cigar boxes? Regards, --Doug ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://www.best.com/~dcoward/analog =========================================

24 years

← Newer
1
...
35
36
37
38
39
40
41
...
44
Older →

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 December 2001