test-drb February 2015

test-drb@ccmp.vtda.org

203 participants
261 discussions

by ljw-cctech＠ljw.me.uk

Posting the message below for a non-subscriber (thanks to Bruce Damer) - please reply to Patricia Gray at the email below. And here is the Digibarn's Comptometer Page: http://www.digibarn.com/collections/calculators/comptometer/ Lawrence === I have what I think is a model J comptometer - but the red or white key in the upper right hand corner of the number keys is missing part of itself. We bought it at the San Jose Flea Market, sometime before 1987, when my husband died, but the local museum here has a bunch of them and no room for more. Thanks. Patricia Gray, Montrose Colorado pbggray at gmail.com === -- Lawrence Wilkinson lawrence at ljw.me.uk Ph 07841-048948 http://www.ljw.me.uk

9 years, 10 months

Pascal not considered harmful - was Re: Rich kids are into COBOL

by radiotest＠juno.com

At 01:07 PM 2/19/2015, Ethan Dicks wrote: >I got my start with banging hex into TIM ... I got my start punching Hollerith cards and handing in a box of them at the computer center window. :-) Dale H. Cook, Roanoke/Lynchburg, VA Osborne 1 / Kaypro 4-84 / Kaypro 1 / Amstrad PPC-640 http://plymouthcolony.net/starcity/radios/index.html

9 years, 10 months

RA81 removal

by jnc＠mercury.lcs.mit.edu

>From a while back: > From: Noel Chiappa > What's odd is that RL0x's use almost identical (maybe they are > identical) slides So I recently happened to be doing some stuff in the basement, and I compared the DEC part numbers on the RA81 slides and some RL02 slides I have, and ... they are indeed the same part number! > but on the RLOx's, there _is_ (I think) a way to take the drive out > without undoing screws; there's a little latch at the very front of the > slide, and it looks like if one trips that latch, the rail along the > side of the drive case will slide out out of the slides. I have yet to try this and see if the RL0x's will in fact slide out - does anyone happen to know if RL0x's can be slid out? > I wonder why they didn't do that on the RA8x's as well? Maybe because > those weigh so much more? Definitely a possibility, given that they are in fact the same slides. Noel

9 years, 10 months

HP 21MX Ethernet/SCSI card?

by johannesthelen＠hotmail.com

Hello! I just got HP 2109 E-series which I bought from eBay last week. I was planning to make own tape emulator interface for it, but I found mystery card from it, and it could solve some of data transfering problems... Here's pictures of it:https://drive.google.com/file/d/0B_DR111cK6W-M0FPSnR4VmRDR3M/view?usp=sh… It seems to be from 1995 what I can guess from chip date codes, but theres no any manufacturers logos. As you can see pic, there is RJ45 and SCSI connectors. Is this somekind of emulator board for disk drive..? Can it used with PC (like old NetBEUI protocol) or is this for some very-special-made-for-very-special-communication-software? Computer itself is from Navy's Radcom station (made by Grumman Aerospace Division), maybe somebody knows more of this system... - Johannes Thelen Old computer blog (Finnish) http://ennenmikrotietokoneita.blogspot.fi/Company site www.thelentech.fi

9 years, 10 months

PDP-8/M restoration project

by blstuart＠bellsouth.net

For any of you who are on more than one of these lists, I apologize in advance for your getting multiple copies of this. Now that I'm moved into the new place and the man cave (my basement) is converging on a usable state and in recognition of the upcoming 50th anniversary of the introduction of the PDP-8, I'm about to embark on a project to restore a PDP-8/M I got a while back. Unfortunately, this one is somewhat incomplete.. So I'm looking to start collecting some of the bits I'll need before it's all said and done. The items I need are in descending order of priority: KK8E M8320 Bus load module KL8E M8650 Async module H851 Inter-module jumper blocks for the CPU boards Memory Storage device and controller Power switch key One front panel switch paddle If you have any of those that you're looking to unload (especially the M8320 or the M8650), let me know. Obviously, I can live without the switch paddle and I should be able to get a new key cut, but if anyone has extras lying around, I promise to give them a good home. The truth is I don't expect to come up with memory or storage devices for what I can justify spending. However, it turns out I do have an Omnibus prototype board. So I'm planning to use that to build a device to emulate a set of RK05s using an SD card for storage, and if need be, I can put memory on there too. Thanks in advance, BLS

9 years, 10 months

VT101 8085 CPU Fault

by jnc＠mercury.lcs.mit.edu

> From: Matt Burke > You need to connect a DMM with mA (or better uA) range in series with > the bench supply and capacitor I was wondering about that - isn't the startup current, when the supply is first turned on, going to be substantial, especially with the larger caps? Any chance that could harm the DMM (or am I too used to old mechanical meters? ;-), or are they pretty well protected against over-current situations? If one does have to worry about this, is there a need for some sort of switch arrangement so that on initial power-on, there's a direct connection (supply -> cap), but once it's been on a few seconds, one can switch to route things through the DMM, to measure current with the cap mostly charged? Again, apologies for the elementary questions, but I'm not a hardware guy by trade... :-) Noel

9 years, 10 months

Old toner

by cclist＠sydex.com

I came across a carton (10 boxes) of Panasonic laser printer toner KX-P450 in my "I forgot about this stuff" stash. This is the toner for the old KX-P4450 series. I still have a 4455, but it's destined for the scrap heap, as it's not any better or more useful than any printer I have now--and is a messy bugger to refill. My question is "Can this toner" be used to refill other printer cartridges?" In other words, is most printer toner pretty much the same stuff? --Chuck

9 years, 10 months

ab20 archive

by jfoust＠threedee.com

At 08:56 AM 8/11/2014, Jason Scott wrote: >I'll work on finding and getting them on archive.org! > > >On Mon, Aug 11, 2014 at 4:59 AM, Jacob Dahl Pind <rachael at telefisk.org> >wrote: > >> >> Does anyone by change have either of the following walnut creek cdrom, >> >> AB20 Amiga CD-ROM >> Aminet CD-ROM disc, 6/93 , ( note this is not part of the aminet cds from >> Urban D. Mueller) I bet I have them both; the trick would be finding them. - John

9 years, 10 months

Sun Type 3 and 4 keyboards and Mice

by sales＠elecplus.com

Someone asked for these a few days ago. Found several in the attic. Type 3, 2 boards, 1 missing a couple of caps, 1 mouse. Type 4, I think there are 2 complete keyboards. Who wanted them? Cindy Croxton

9 years, 10 months

Pascal not considered harmful - was Re: Rich kids are into COBOL

by geneb＠deltasoft.com

On Thu, 19 Feb 2015, John Foust wrote: > Was it the sheer will power and marketing of Borland, or was > it the volume of developers who didn't need intensive low-level I/O? > I suspect it was Borland's extensions to Pascal that removed any limitation in I/O. I think people confuse Turbo Pascal with "standard" Pascal. Turbo brought a LOT to the table that you simply coudln't do with a standardized Pascal compiler. Borland never quit tweaking the language - Object Pascal hit with the 5.5 release of Turbo Pascal and that was improved upon even further with the 6.0 and 7.0 releases. When Delphi hit the market in 1995, it really blew people away. Had Borland's management not run the company into the ground, Delphi would be a lot more popular than it is today. Fortunately they used their last functioning brain cell to spin their developer tools off to CodeGear in 2007. Embarcadero purchased them a while after that and have continued to improve upon the product - both Delphi and C++ Builder. g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind. http://www.diy-cockpits.org/coll - Go Collimated or Go Home. Some people collect things for a hobby. Geeks collect hobbies. ScarletDME - The red hot Data Management Environment A Multi-Value database for the masses, not the classes. http://scarlet.deltasoft.com - Get it _today_!

9 years, 10 months

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test-drb February 2015