test-drb

test-drb@ccmp.vtda.org

101090 discussions

by sales＠elecplus.com

https://www.elecshopper.com/decision-data-keyboard.html For parts or repair. I am going to be adding quite a few keyboards in the coming week, so if you want them before the "keyboard kids" get them, please turn on your rss feeds. https://www.elecshopper.com/rss/ 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, 9 months

Scanning question

by jfoust＠threedee.com

At 04:50 PM 7/18/2019, Warner Losh via cctalk wrote: >(1) wire-ring bounded. What's the best way to scan these? The easiest is to >just clip the wire binding and drop it in the scanner. But then what? Those are going to snag on each other, no? I'd trim the edges off. >(2) Folded with staples. These are booklet format, with stables in the >middle. I could easily remove the staple and scan. but how do I replace the >staple? Cut along the middle using a paper cutter. >(3) Gum bound. These books are bound with some kind of gum / goo on the >spine. Some of these are so old I could just remove it and have no real >degradation of the state. Others have spines that are still in good shape. Probably needs a pro paper cutter. - John

6 years, 9 months

Another warehouse closing

by sales＠elecplus.com

https://www.facebook.com/KemnerEnterprises/ Located in Pottstown, PA. Still open Fri afternoons and Saturdays. Cindy Croxton --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

6 years, 9 months

Setting up RSS feeds

by sales＠elecplus.com

If you have Thunderbird, go to Blogs and News Feeds. Click on the RSS icon, and enter the info for each site you want to follow. If you have Outlook, the process is very similar. If you have Chrome, you can use an add-on, such as https://chrome.google.com/webstore/detail/rss-feed-reader/pnjaodmkngahhkoih… If you have Firefox, see this areticle https://addons.mozilla.org/en-US/firefox/collections/4757633/feed-readers/ Cindy

6 years, 9 months

Looking for Pangolin QuadMod cards (Amiga)

by ethan＠757.org

Just a random one... I'm looking for old Zorro II boards made by a company called Pangolin. It's the QuadMod16 and QuadMod8 which are used with the Amiga. If a QuadMod2000 or QuadMod32 showed up I might have slight interest in that as well. These are laser projector controllers for light show use. I have a QM16 now but it might be a "slave" card and the software can't see it. -- : Ethan O'Toole

6 years, 9 months

VCFMW drop offs and visits

by useddec＠gmail.com

If anyone going to VCFMW needs any (mosyly) DEC items dropped off there please let me know so I can plan ahead. Trades are sometimes workable for other DEC equipment, even more so for US and foreign coins and currency. I plan on arriving Friday afternoon and returning Saturday night. If anyone wants to stop by and look around, please let me know of tentative plans so I can plan accordingly and not have too many people tripping over each other. Please contact me off list. Thanks, Paul

6 years, 9 months

VCFMW

by useddec＠gmail.com

If anyone from the UK is coming over to VCFMW and would be willing to bring me some nice crisp uncirculated currency I will be happy to trade you for US currency or DEC computer items. I can make up a list over the next few days. I don't know when the new 50 is coming out, and I'm also interested in the Steven Hawkins coin, coins from the isles, pre-decimal and other foreign coins. Please feel free to contact me off list. Thanks, Paul

6 years, 9 months

AGC software bloat 'what if' musing

by steven＠malikoff.com

It's well documented that in 1967 or so the AGC code was bloated (amongst other problems) and looked like it was not going to be ready in time for the landings, so much so that NASA sent in Bill Tindall to MIT to kick heads. Could they perhaps have given the under-pressure programmers some breathing space - a contingency - by carrying another set of ropes with the excess (return mission) code on them, whilst still working on the all-in-one set? That is, fly to the moon with everything required up to P65 etc then once on the surface, exchange the rope modules for the return software and throw the first rope set out onto the surface to save weight. Power cycling the AGC in flight was possible and even done later on Apollo 13 and surely they would have done this in simulations. And they could presumably have left the IMU running and aligned, as sufficient power was available? Steve

6 years, 9 months

DEC Purchase Specifications, particularly 23-000A9-01

by nf6x＠nf6x.net

I've been studying scanned documents for the M9312 UNIBUS bootstrap/terminator card because of reasons. They refer to Digital Equipment Corporation Purchase Specifications 23-000A9-01 and 23-000F1-01 for the PROMs, and I'm wondering whether those documents have been preserved anywhere? I'd love to see them. Ok, about the reasons: My PDP-11/34A has an M9301-YF bootstrap/terminator card, which doesn't have bootstrap code for a couple of the newer devices I'd like to use in the system such as RL02 and emulated TU58. The newer M9312 card looks more flexible for changing out bootstraps than the M9301 series. I'm working on getting my hands on an M9312, but I don't know yet whether I'll be able to get original PROMs for the specific bootstraps that I want. I haven't identified a trustworthy source for blank old-timey bipolar PROMs yet (and I'm not sure if I have a suitable device programmer for them), and I was thinking about making some sort of PROM emulations that I can swap around like they're going out of style. It would probably be helpful (and definitely interesting) if I could learn details about the original part specifications, such as what speed ratings DEC used. I don't have an M9312 in my hands yet, and I'm not yet sure about how rapidly the card performs its little 4-to-16 bit deserialization stunt. If 70ns access time parts are sufficient for the M9312's PROMs, then I may design an emulation with a 5V compatible 28 series EEPROM. If they need to be faster, then I may need to do something fancier. Or maybe I'll find the original PROMs that I need and then get distracted and wander off. It may well be easier to design a replacement for the entire M9312 card than trying to emulate the individual 512x4 bipolar PROMs, but since when do I do anything the easy way? I sure wouldn't be playing with 40 year old computers if I was concerned with practicality and ease of use! -- Mark J. Blair, NF6X <nf6x at nf6x.net> http://www.nf6x.net/

6 years, 9 months

Computer Reset shop, liquidation. (USA)

by jfoust＠threedee.com

At 10:29 AM 7/17/2019, Patrick Finnegan via cctalk wrote: >On Wed, Jul 17, 2019 at 10:17 AM Ethan O'Toole via cctalk < > There are likely to be similar places around flyover America. You been poking around my warehouse? >I'd agree in prinicpal, but if even 0.1% of LGR's 1M youtube followers try >to show up one day, it'd be a Problem. More people going will create a >bigger headache for the volunteers helping to deal with the situation and >might end up in no one getting anything. YouTube subscriber numbers versus reality; you'd have a hard time getting 0.00001% of those subscribers to do anything in the real world. >I've been overwhelmed trying to >deal with my own collection sometimes; I can't imagine having 10-20x the >space filled up would be like. I'm overwhelmed and it's time to purge. The problem isn't a desire for old computers, the problem is having too much space. You might like motorcycles or tractors or Beanie Babies, but if you have the space and the inclination, you can eventually fill your available space. > There's some threshold where >instead of "more people getting retrocomputers", it's "This is too much >stress, so it's all going to a landfill". Yes, assuming you expended the effort to organize and document, then organization makes dispersal slightly more easy... but most of the problem is still there. You want to advertise what you have? Effort. Put a value on it? More effort. Want to give it away? Sell it? All that takes time and effort. Lots of time. Packing, shipping, even just dealing with schedules and communication and meet-ups and those who don't show up. And yes, if you're in "flyover America" you have far fewer enthusiasts to attract for local pickup. Even sending it all to recycling takes a tremendous amount of effort. I put some stuff on eBay the other day, some server stuff less than ten years old plus some other items, like 18 VoIP phones with a starting bid of 99 cents... the only thing seeing a bid so far is a NIB toner cartridge for an HP laser printer. So, to deal with my own hoarding / collecting, I'll strive to make a list of stuff I haven't touched in 10, 20, 30 years, and I'll post here to see if anyone is interested. Too much lingering obligation and future debt, even if it only has to go to recycling. I've considered taking a truckful to VCF Midwest, but apparently I'd need to make a big scary sign that says "If you don't take it now, it's going to recycling" because I can't imagine that I'd be able to give away half the load. - John

6 years, 9 months

IBM documentation is San Antonio

by sales＠elecplus.com

A friend of mine is an old IBM dealer. His mother started the business, and they have documentation going back to the beamspring days. He has agreed that he will pack all the stuff into boxes and pack the boxes on a pallet. These are not free; he wants an offer, since he has to pay a guy to pack, cost of boxes, etc. There are several hundred pounds of stuff. Think of a 5 foot wide 6 foot tall cabinet stuffed to the gills, and then multiply that by at least 4. If interested, let me know. 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, 9 months

Computer Reset shop, liquidation. (USA)

by cctalk＠ibm51xx.net

>So, to deal with my own hoarding / >collecting, I'll strive to make?>a list of stuff I haven't touched in 10, 20, >30 years, and I'll >post here to see if anyone is interested.? >Too much lingering >obligation and future debt, even if it only >has to go to recycling.This is always a good first step. If people don't know what you have people can't reach out.Just saying ;)-Ali

6 years, 10 months

Computer Reset shop, liquidation. (USA)

by cctalk＠ibm51xx.net

>It's unfortuante that this wasn't a well >known business/resource before it>was an overflowing burden for the family >to deal with.??Actually it was. They used to sell on eBay all the time. Guy was an old timer, nice enough once you got to know him but he wasn't very friendly or easy to deal with initially specially through eBay (listing with ridiculous S&H, no response to messages, etc).The place was on my list of if "I ever have the time and money" but life caught up to them before I hit the lottery :D.-Ali

6 years, 10 months

Mystery DEC backplane on eBay

by jnc＠mercury.lcs.mit.edu

For those who saw this item: https://www.ebay.com/itm/183639487495 but didn't know what it went to (Web searches for "5409818" and "5009817" didn't turn up anything useful for me), it turns out to be a "Configuration 2" backplane for a PDP-11/05-/10: http://gunkies.org/wiki/PDP-11/05#Backplane_versions with slots for one MM11-L memory unit, and 4 SPC slots. Noel

6 years, 10 months

RF08 light panel

by jnc＠mercury.lcs.mit.edu

> From: Ethan Dicks > Did anyone here get it? Yeah, me - although I didn't expect to! Because of my work on DEC indicator panels (this one's a 10-1/2" panel, unusual): http://ana-3.lcs.mit.edu/~jnc/tech/DECIndicatorPanels.html I put in what seemed to me a lowish bid, expecting not to get it (I figured I'd make do with the image from the sale), and was rather surprised that I got it. I don't have an RF08, of course, so if anyone actually has an RF08, I'll happily do a deal to get it to you. > I did not bid because I have zero parts of an RF08 (and if I ever > make a modern RF08 emulator, I might as well make one of these to > match). Yeah, for the QSIC indicator panels, we built totally new ones, too. We took advantage of that to change the interface; the DEC originals have a wire per light, which is kind of klunky. Ours time-multiplexes a single data line (there are 'clock' and 'latch' lines too); visually, it seems to look identical to the DEC originals in operation. Noel

6 years, 10 months

Artsearch software for MicroVax?

by ethan＠757.org

Anyone happen to have the Artsearch software for Microvax? It's my understanding the the software drove a laserdisc player. A friend has the laserdiscs but not the software. -- : Ethan O'Toole

6 years, 10 months

5 1/4 diskettes available

by guykd＠optusnet.com.au

At 03:47 PM 11/07/2019 -0500, you wrote: >> On 7/10/19 11:32 AM, Will Cooke via cctalk wrote: >> >> > https://www.bgmicro.com/4-pack-of-5-25-floppy-diskettes-with-sleeves.aspx >> >> They have hub rings, so they are probably 360K > >Weren't these 89 cents when this was first posted? Well they're $1.89 now. >You're altering the market! So they are! Oops. Sorry! Maybe they had a rush of orders, and it's not entirely my fault? Or maybe the 89c price was a typo, and my order alerted them? They confirmed my order. Fingers crossed they actually ship them, and it doesn't turn into an argument about honoring transactions. Though probably, a higher postage cost would be fair. 88 floppies and covers will weigh a bit. (Should have bought 100.) 4 Pack of 5.25" Floppy Diskettes with Sleeves COM1147 22 $0.89 $19.58 Subtotal: $19.58 Shipping & Handling: $6.95 Tax: $0.00 Order Total: $26.53 That's an easily altered market. I am a lovely butterfly, fear my flapping wings! Guy

6 years, 10 months

We are looking to buy RCA VP3501 keyboard or any of the 3000 data term items please drop us a line off list ( and art material photos posters etc too to add to display as well as hardware)

by couryhouse＠aol.com

We are looking? to buy RCA? VP3501 keyboard or any of the 3000? data term items please? drop us a line off list (and art material? photos posters etc too to add to display as well as? hardware) Thanks Ed Sharpe archivist for SMECC

6 years, 10 months

Margaret Hamilton Guardian interview.

by lyndon＠orthanc.ca

Another of the un-acknowledged people in the upcoming July 29 'celebrations'. https://www.theguardian.com/technology/2019/jul/13/margaret-hamilton-comput… --lyndon

6 years, 10 months

RF08 light panel

by aek＠bitsavers.org

bet this won't go cheap https://www.ebay.com/itm/372706567865

6 years, 10 months

visit to Bletchley Park / comp museum - Elliot 803

by billdegnan＠gmail.com

Hi all - Gatwick Airport was closed for many hours. Without getting into all of the details it became impossible to make it to the museum during my layover. As it was everything had to be perfect. I went to London for a few hours instead. My goal was to see the Elliot 803 at the computer museum in Bletchley so I could learn more about how it worked, I found some code written for the 802, which would work on the 803, and I thought it might be worth the experience to see or maybe even operate the actual machine. There is no simH that I know of for the 802/803 but I have read some attempts at it. I realize I could not see the whole museum and would be rushed, but given I was only in London for an extended 17-hour layover, why not try? Peter Onion Elliott 803 Team leader was going to meet me. Thanks everyone for their feedback. I am going to try to visit next spring for a longer period so I can take my time. I also would like by then to try the same technique I used for the LGP-30 to get that running on simH, applied to the Elliot 803. I'd have to get my head back into that project. Complicated. Bill

6 years, 10 months

SGI Personal Iris information

by pmackinlay＠hotmail.com

I'm currently working on emulating the 4D/20 in MAME, and looking for anyone who might have actual hardware, software or documents that might help. Right now, most useful would be some high resolution images of the system boards, especially the GR1 graphics boards, or even schematics if they're out there. Appreciate any information or input at all. -- Pat.

6 years, 10 months

Box of HP 1000 series MUX cards - 12040

by gerardcjat＠free.fr

The right question is : Does theses worth $ 600 as gold scrap ?? Certainly NOT, so ..... This is "If you want that scrap, you pay a premium ". A premium for what ? ( or for who ) ??

6 years, 10 months

Box of HP 1000 series MUX cards - 12040

by jesse＠cypress-tech.com

If anyone wants 87 HP 1000 series mux cards for gold or to play around with, I'm starting to clean house. The ebay link is below. https://www.ebay.com/itm/383039137321

6 years, 10 months

Margaret Hamilton Guardian interview.

by jnc＠mercury.lcs.mit.edu

> From: Richard Loken > I have never heard of her before and had no idea. There are two books from participants in the development of the AGC software (both of which I highly recommend) which mention her: Hugh Blair-Smith, "Left Brains for the Right Stuff: Computers, Space, and History", Sdp Publishing, East Bridgewater, 2015 Don Eyles, "Sunburst and Luminary: An Apollo Memoir", Fort Point Press, Boston, 2017 The latter has somewhat grumpy note (pg. 342) which points out that she was only appointed to a management role in early 1970, after the first landing. It also points out that Hal Laning originated the concepts of "asynchronous software" and "priority scheduling". Eldon C. Hall's excellent project history, "Journey to the Moon: The History of the Apollo Guidance Computer" (which covers both h/w and s/w) doesn't mention her. Noel

6 years, 10 months

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