test-drb

test-drb@ccmp.vtda.org

101090 discussions

by sales＠elecplus.com

https://www.elecshopper.com/texas-instruments-ti-994a-computer-in-box-black- and-silver.html Only 4 of these on hand. Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-370-3239 cell sales at elecplus.com --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

6 years, 10 months

RSTS/RSX manuals available in the UK

by binarydinosaurs＠gmail.com

Hi folks, I?ve held onto this collection of manuals for the last 3 years and now they really need to go because I?m having to move house in the next 2-3 months, my landlady is selling up. I thought it was too good to be true being in this house for 7.5 years! The RSTS manuals are V10 (1990) and there's 3 RSX-11M V4 as well as RSX DECNET. I don?t have the time to scan them myself otherwise I would?ve done ages ago. I?m heading past Jim Austin?s place in a couple of weeks? time so if nobody else is interested I can drop them off there if he?s up for it. Cheers, -- adrian/witchy Owner of Binary Dinosaurs, the UK's biggest private home computer collection? t: @binarydinosaurs f: facebook.com/binarydinosaurs w: www.binarydinosaurs.co.uk

6 years, 10 months

IBM Series/1

by sieler＠allegro.com

> > > The hardware is excellent. They have fairly fast processors, and the > > I/O capacity is great. Reliability is typical IBM. > > > > The OS sucks balls. All the balls. > > > > Commercially, they were not a success, despite being IBM's first > > "open" system, in that they invited third party developers. It seems When I joined HP in mid-1979, the first week I spotted an IBM Series/1 in a small conference room ... with an IBM repairman. The HP engineers had apparently blown out a memory board somehow while "looking" at it :) >From the HP 3000 viewpoint, we weren't worried about the Series/1. Stan

6 years, 10 months

MULTIPROCESSING FOR THE IMPOVERISHED Part 1: a 6809 Uniprocessor

by lproven＠gmail.com

1993 article on building a multiprocessor 6809 box. http://www.bradrodriguez.com/papers/6809cpu.htm -- Liam Proven - Profile: https://about.me/liamproven Email: lproven at cix.co.uk - Google Mail/Hangouts/Plus: lproven at gmail.com Twitter/Facebook/Flickr: lproven - Skype/LinkedIn: liamproven UK: +44 7939-087884 - ?R (+ WhatsApp/Telegram/Signal): +420 702 829 053

6 years, 10 months

looking for a 7-track reel tape controller

by p.gebhardt＠ymail.com

Hello Paul, thanks a lot for your hint to the DEC controller. I wasn't aware that the TM11, TMA11 and TMB11 controllers can handle 9-track as well as 7-track NRZI-encoded tape drives. However, all these controllers seem to be very rare in the public out there. Not too surprising considering that DEC TU and TS tape drives themselves are rare and that 7-track tape drives were soon replaced by 9-track tape technology in the early days. With best regards, Pierre ----------------------------------------------------------------------------- http://www.digitalheritage.de Am Dienstag, 6. August 2019, 19:49:14 MESZ hat P Gebhardt <p.gebhardt at ymail.com> Folgendes geschrieben: Hello Paul, thanks a lot for your hint to the DEC controller. I wasn't aware that the TM11, TMA11 and TMB11 controllers can handle 9-track as well as 7-track NRZI-encoded tape drives. However, all these controllers seem to be very rare in the public out there. Not too surprising considering that DEC TU and TS tape drives themselves are rare and that 7-track tape drives were soon replaced by 9-track tape technology in the early days. With best regards, Pierre ----------------------------------------------------------------------------- http://www.digitalheritage.de Am Freitag, 2. August 2019, 07:04:02 MESZ hat Paul Koning via cctech <cctech at classiccmp.org> Folgendes geschrieben: It may depend more on what kind of tape drive you have. The DEC TU10 controller handles both? 7 and 9 track tapes. ??? paul

6 years, 10 months

PDP-11 Emulation on VAX Was Re: Alphaservers for free in Athabasca, Alberta

by raywjewhurst＠gmail.com

If I am not mistaken the 8600/50 were the last VAXen to feature PDP-11 emulation. After VMS 3.x the functionality was dropped so it was very short lived on the 8600. Ray

6 years, 10 months

Alphaservers for free in Athabasca, Alberta

by rlloken＠telus.net

On Mon, 5 Aug 2019, Boris Gimbarzevsky wrote: > A mere 579 miles from Kamloops. Unfortunately have to talk to my wife who > thinks I have too many computers even though I've given away bulk of my DEC > stuff. Never got a chance to play around on Alpha as it came out during my > Mac days. A mere 1,000km, South I assume since you gave the distance in miles but I don't think you want a 7 foot rack of ES45s in your living room - the power bill, the heat, and the fan noise would wear on you after a while. Without looking it up, I imagine I am about 1,000km the other way from Kamloops. We could meet in the middle, have a beer together, and trade trailers. :) -- Richard Loken VE6BSV : "...underneath those tuques we wear, Athabasca, Alberta Canada : our heads are naked!" ** rlloken at telus.net ** : - Arthur Black

6 years, 10 months

Control Data Cyber 960 available

by wdonzelli＠gmail.com

I just received a pile of goodies from BT Federal, the last remaining bit of Control Data. Part of the goodies included a complete set of spare CPU boards for a Cyber 960. This means my extra Cy960 is surplus to my needs - I bought it strictly as a source of spare parts. So it needs to go. The world is not all DEC and IBM. Play around with machine that has Seymour's fingerprints all over it. This is an ex-Florida Light and Power box. Mind you, this is a serious machine. It sucks a lot of power, and weighs a lot. 5000 pounds total in three cabinets. Completely over engineered. See the cray-cyber guys website for more specs. This is the CPU only - no disks or tapes, but I could include a DI with it (sort of a channel attached comms box for connecting terminals, printers, and networks). I think the cray-cyber guys are working on getting an emulator working for disk and tape. Software and docs are very available. No goofy license needed. Anyway, available pretty much immediately. Located in the Hudson Valley of NY. Serious machine, so serious inquiries only, please (off list). -- Will

6 years, 10 months

mid-range IBM systems [was RE: IBM Series/1]

by RichA＠livingcomputers.org

From: Jay West Sent: Monday, August 05, 2019 10:38 AM > I used to run a system at Anheuser-Busch in the late 80's, ISTR it was a > 4331, 4341, or 4381. The 4331, 4361 and 4341 are slightly more than waist high. The 4381 is a high-boy cabinet. Rich Rich Alderson Sr. Systems Engineer Living Computers: Museum + Labs 2245 1st Ave S Seattle, WA 98134 http://www.LivingComputers.org/

6 years, 10 months

Needed: instruction manual for AVA 103C

by wh.sudbrink＠verizon.net

I just picked up an AVA Model 103C Floppy Exerciser. While it has a few quick tips silkscreened on the bottom of it, I think it would be helpful to have the full manual. I've done a fair bit of googling, but all I've turned up is several repair manuals for other equipment, suggesting the 103C as the ideal tool for testing and repairing their gear. Thanks, Bill Sudbrink --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

6 years, 10 months

Various Mac PowerPC, Dec and Sun equipment available in Houston TX

by nospam212-cctalk＠yahoo.com

The clearing continues... I have several system that are free to anyone who wants them before they get tossed. Local pick up gets preference but I'll ship if you are willing to pay for UPS packing and shipping. None of the systems have been powered on in several years and the DEC and Sun equipment is incomplete, see notes below. All systems are as is and include base system only, no monitors, keyboards, etc. All of the Macs came from a company that did audio/video production work. I believe these were mostly used to record and edit audio in a recording studio though some may have been used in their art department for graphics work. Systems include: Mac PowerPC 9600/300 Five Mac PowerPC G4s (Couple of the systems have cases modded for rack mounting) The DEC equipment is as follows: MicroVAX 3100 - No idea what is inside or condition. Case has an opening where it appears a tape or removable drive once was installed but is no longer there. DEC Storage Expansion - Believe this went with the MicroVAX above but not sure, no idea what all is inside or condition. And finally the Sun: Sun SparcStation 5 - No idea condition of what is inside, probably incomplete or missing components but no idea. All the above are offered free for local pickup or you pay to have them packed and shipped. Located in Houston, TX. Contact me off list if you have any questions or want to arrange pickup. Best, David Williams www.trailingedge.com

6 years, 10 months

Selling my Data I/O 29B programmer

by woolfson＠telswitch.com

Just a heads? up to the group that I am not using this any more; ever since I restored the PLATO terminals for LCM and CHM, I have not touched the 29B. I don?t think that I am going to be having much use for it since I have not been dabbling in vintage hardware. If anyone is interested, it is listed right now; but I am more or less interested in giving it a good home and if someone wants it, just contact me directly and I?ll be happy to try to make that happen (and I can remove the auction if nobody has bid). https://www.ebay.com/itm/233305501413 <https://www.ebay.com/itm/233305501413>

6 years, 10 months

IBM Series/1 (Kevin Bowling)

by michael.99.thompson＠gmail.com

> > Date: Fri, 2 Aug 2019 12:40:58 -0700 > From: Kevin Bowling <kevin.bowling at kev009.com> > Subject: IBM Series/1 > > Anyone have one of these? I'd like to find a system, but images of > the OS media would be interesting. > > Regards, > Kevin > The RICM has lots of Series/1 systems. They haven't been powered on for decades. You are welcome to explore what we have. http://www.ricomputermuseum.org/Home/equipment/ibm-series1 -- Michael Thompson

6 years, 10 months

IBM Series/1

by kevin.bowling＠kev009.com

Anyone have one of these? I'd like to find a system, but images of the OS media would be interesting. Regards, Kevin

6 years, 10 months

Avoid shipping with pre-sale deals on stuff from Sellam's collection--today only!

by sellam.ismail＠gmail.com

Howdy Folks. I wish I had thought of this a few days ago, but I wasn't sure if I was going to be making it to the VCF event this weekend. Being that I am, I'd like to offer to bring any item that you want to purchase to the VCF if you're going to be there yourself. That way you can save on the shipping. Also note that I have "show prices", which are higher than my normal prices to offset the consignment commission. However, if you confirm a purchase beforehand, you will pay the regular asking price. The listings on my Virtual Warehouse of Computing Wonders are presently up to date: https://docs.google.com/spreadsheets/d/1I53wxarLHlNmlPVf_HJ5oMKuab4zrApI_hi… Please be reminded that this is not my complete inventory, but merely what I have presently processed and listed from my warehouse mine. If there's something you are looking for that I don't have listed, please send a request by e-mail. Thanks! Sellam

6 years, 10 months

VCF Midwest 14 Overflow Hotel Block Open

by silent700＠gmail.com

Hello vintage fans! This is exactly the kind of problem a growing show wants to have, but it's a problem nonetheless. The Clarion Inn hotel attached to our show venue is FULL for Saturday night 9/14. There may be a few rooms left for Friday 9/13, but that doesn't do you a whole lot of good if you're staying the weekend. We have arranged a small room block at the Comfort Suites in Oak Brook Terrace, a short drive away from our hotel (sadly there was nothing nearby that was walkable). Room rates are the same ($109/night) and we have King and Double rooms reserved from Thursday through Sunday nights. More information and a booking link can be found here: http://vcfmw.org/hotel.html We recommend checking with the host hotel (Clarion Inn, info at the link) first in case a cancellation freed up a room before booking with Comfort Suites. And remember - the deadline to book a room is August 24th. They're not going to let us slide! Looking forward to seeing everyone there in September! -jt

6 years, 10 months

What's a half meg on the Atari800 good for under

by technoid6502＠gmail.com

Good question. There are upgrades up to 4mb, but ones for the 800 most common range from 64k to 1088k. A pair of really common and several less common standards have existed for many years. This one conforms to the Axlon standard, which is among the oldest for the Atari's. It switches the banks in 32k increments. The other standard was set by Atari on the introduction of the 130xe; that switches in 16k increments. Aside from a ramdisk, what can you do with it? My primary reason for building the thing is to gain memory for the Spartados X operating system, which benefits greatly from more memory (256k is the sweet spot). SDX barely runs on 48k ram and the SIDE driver does not load. SIDE2 is a cartridge for the machine that grafts a CF slot on and allows it to act as a hard disk under SDX. This is of course very useful. Here's a link to the Spartados X cooperative: http://sdx.atari8.info/index.php The Side2 cart, in addition to hosting Spartados X and the CF hard disk controller and firmware, also hosts a real-time clock, and can carry several other programs which must be hosted by hardware because of thier bank-selecting rom design, such as Basic XL, Basic XE... Spartados is a 256k bank-selected cartridge itself. Released in 1988 by ICD, Spartados X is a surprisingly rich disk operating system which adds a host of features not available on other 8-bit machines. IO redirection and batch processing, memory management, paths of various sorts... Here's a link to the Side2 cart, which comes with the SDX firmware pre- loaded: https://lotharek.pl/productdetail.php?id=55 Being able to load the SIDE driver and access the CF slot as a hard disk is my primary purpose. The machine will have ample memory to run real programs while running SDX, which is also very important. Best, Jeff On Fri, 2019-08-02 at 13:06 -0500, Eric Christopherson wrote: > On Fri, Aug 2, 2019 at 12:39 PM Jeffrey S. Worley via cctalk < > cctalk at classiccmp.org> wrote: > > I'm building as many as ten of a 512k Axlon compatible memory board > > for > > > > the Atari 800 (not xl) computer. If you'd like to have one, please > > > > message me and let me know so I can reserve one for you. > > > > > > > > I'm not sure of my cost at the moment, but it is something on the > > order > > > > of $30.00 per board. I'll tot things up when I get around to it, > > but > > > > it will probably come out to less. So for parts and shipping, you > > can > > > > have one. Here's a photo of the completed board: > > > > > > > > https://atariage.com/forums/topic/256464-designing-an-axlon-compatible-boar… > > > > > > > > https://atariage.com/forums/topic/256464-designing-an-axlon-compatible-boar… > > > > > > > > I've got all the parts on order but the boards, for which I'm > > waiting > > > > for a quote. I gather the boards are about $10.00 each but am not > > > > counting my chickens quite yet. > > > > > > > > Best, > > > > > > > > Technoid Mutant > > Hi, Technoid! > > I'm certainly interested. I didn't know 512KB was possible in the > original 800. Other than RAM disks, do you know what sorts of things > it would let me do? > >

6 years, 10 months

512k SRAM for Atari 800 computer

by technoid6502＠gmail.com

I'm building as many as ten of a 512k Axlon compatible memory board for the Atari 800 (not xl) computer. If you'd like to have one, please message me and let me know so I can reserve one for you. I'm not sure of my cost at the moment, but it is something on the order of $30.00 per board. I'll tot things up when I get around to it, but it will probably come out to less. So for parts and shipping, you can have one. Here's a photo of the completed board: https://atariage.com/forums/topic/256464-designing-an-axlon-compatible-boar… https://atariage.com/forums/topic/256464-designing-an-axlon-compatible-boar… I've got all the parts on order but the boards, for which I'm waiting for a quote. I gather the boards are about $10.00 each but am not counting my chickens quite yet. Best, Technoid Mutant

6 years, 10 months

Announcing Cadetwriter

by dave＠babcock-family.org

To all, After several more months of delays - personal and project issues - Cadetwriter is being released.? [Cadetwriter is the official name of our general-purpose, Wheelwriter-based Computer Terminal.]? The public unveiling will be at this weekend's VCF West at the Computer History Museum in Mountain View, California. Attached is a flyer on the device. At the show we'll be demonstrating the Cadetwriter connected to: ??? ??? *? IBM 1620 Jr. via USB & proprietary protocol ??? ??? *? ALTAIR 8800 replica (Chris Davis) via RS-232 running OS/8 ??? ??? *? PiDP-8/I replica (Oscar Vermeulen) via USB running MITS Extended 16K BASIC (Bill Gates, Paul Allen, Monte Davidoff) ??? ??? *? Windows laptop via USB and a USB->RS-232 adapter Our plan for the show is to invite anyone with a computer having an RS-232 or USB port to try out Cadetwriter with their computer. We're hoping for a lot of takers We're finishing getting the documentation written or updated and everything uploaded to GitHub.? It should all be available next week. We appreciate your patience. Thanks, IBM 1620 Jr. Team

6 years, 10 months

looking for a 7-track reel tape controller

by p.gebhardt＠ymail.com

Hello list, I have been looking for years for a q-bus or unibus-based disk controller that is able to handle 7-track drives (NRZI encoding). So far, I only located one controller type which handles that: Dilog DQ120 or DU120 and I never came across any. Any other suggestions regarding controller types?Contact me off-list if you are happy to part any 7-track tape controller with me. That would be very much appreciated :) Best regards,Pierre -----------------------------------------------------------------------------http://www.digitalheritage.de

6 years, 10 months

A few VT-320 and keyboard questions

by athornton＠gmail.com

I just picked up a VT-320, with no keyboard. I have some questions: 1) the price on DEC keyboards, at least on eBay, is insane. Does anyone have a VT-320 keyboard they?d be willing to let go cheaply? 2) ?or, failing that, I found a posting of someone who?d done an Arduino-based key code mapper that let him use a PS/2 (or maybe it was an AT) keyboard as a replacement. The link to the actual project was dead, though. Anyone have schematic and source code for such a project? 3) If anyone's got a DB-9-or-25-to-MMP cable you?d sell cheap, I?d be happy to buy it instead or making my own. OK, that?s not really a question. There?s a blank insert where the 25-pin connector usually is; was that a ?feature? of the B2 model? (that?s a question but not much of one) ?aaaaand while I?m here, another question. 4) I have a number of Apple IIs and one III that have sustained some keyboard damage. Where can I get/what is the name of the little plus-shaped keyboard stems for those? If I had a couple dozen that would be most helpful. Adam

6 years, 10 months

Your Heatkkit EC-1 analog computer

by rdawson16＠hotmail.com

Hi Jeff, I have hundreds of crystals here for you, and built a crystal tester (Jim Williams app note) https://www.analog.com/media/en/technical-documentation/application-notes/a… AN12 - Circuit Techniques for Clock Sources<https://www.analog.com/media/en/technical-documentation/application-notes/a…> Application Note 12 AN12-3 an12fa Figures 4a and 4b use another comparator based approach. In Figure 4a, the LT1016 comparator is set up with DC www.analog.com Brian and I are keen on making a new analog computer, possibly a kit. All new things, like the Analog Devices multipliers, better op amps etc, and possibly a USB, MIDI interface. Let us know how you come along on your bringup of the EC-1. The Heath manuals are the best in analog computing, on actual hardware. Randy

6 years, 10 months

Ill NLS MS-230

by brain＠jbrain.com

I have an ill NLS MS-230 Miniscope.? Is there anyone on list that might be interested in getting it running for me?? I'm willing pay for the privilege.? I'd like to see the unit working, but I have no experience with analog scopes, and I'd rather just entrust it to someone who can see it to success.? I did replace the batteries and let it charge for quite a while.? The red LED lights up on the front when on, but no sign of a trace, even when fed a known good 1kHz wave.? The CRT does not appear to be on. Anyone a fan of these units and might be interested in taking a look? Jim -- Jim Brain brain at jbrain.com www.jbrain.com

6 years, 10 months

Final reminder, VCF West

by cctalk＠snarc.net

VCF West is this weekend at the Computer History Museum in Mountain View, California. All of the details (and online ticket sales) are at http://vcfed.org/vcfwest. -Evan K.

6 years, 10 months

Resurrecting integrated circuits by cooking them.

by technoid6502＠gmail.com

Yesterday evening, in the process of refurbishing five very badly treated Atari 800 computers I had a hunch and subjected a failed Pokey chip (Atari Part CO12294 Wikki link https://en.wikipedia.org/wiki/POKEY ) to high heat by way of the barrel of my soldering iron until saliva evaporated from it in about 1 second. The chip, which did not work before in any of the machines now works perfectly. Pokey (see wikki link) is common to all Atari 8-bit computers and common in many Atari coinop video game systems. These chips are becoming scarce, so much so there is a sort of replacement being manufactured https://hotrodarcade.com/products/pokeyone-atari-pokey-chip-replacement-for… . The replacement Pokey only emulates the audio portion of the original chip, leaving the PotKEY part unimplemented. Pokey gets its name from Potentiometer Keyboard. It also handles the Atari SIO peripheral signals, so without those an Atari computer cannot use standard peripherals like serial disk drives, and other common interfaces. Thus, for Atari computers a true Pokey is a must. I stumbled upon a fix for this one and wonder if I reinvented the wheel or if this information may be of use to the group in treating other sorts of chips. Reflowing is a treatment for a lot of hardware these days and generally regarded as a hack which won't last. As modern hardware, CPU's and video chips in particular run very hot, I can see how this might be, but Pokey and most of the stuff we work with don't have this environmental restriction. Most of our gear runs at 40 degrees centigrade or lower. So I'm guessing the problem with my disused chip was oxidation within the package and that cooking the chip a bit cleaned things up? Any advise or observations would be appreciated. I tried this on another chip the same evening, an Antic. The Antic DID work for a second or two, whereas it had before given no signs of life, but then returned to its failed state. Best, Jeff (Technoid Mutant)

6 years, 10 months

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