test-drb

test-drb@ccmp.vtda.org

101090 discussions

by carlclaunch51＠gmail.com

On 05/19/2019 09:46 AM, Jon Elson via cctalk wrote: > There's a switch labeled "IRIG" which stands for Inter Range > Instrumentation Group, and refers to a standard for > telemetry encoding. There is a standard for time code, a > standard for modulating analog signas onto a bunch of FM > carriers, and a standard for multiplexing several analog > signals onto one FM carrier. In this case IRIG stands for Inertial Reference Integrating Gyroscope, one of three inside the Intertial Measurement Unit of the spacecraft. This adapter is used to test the PSA tray (Power Sub Assembly) which had modules such as the Coarse Alignment Amplifiers that were used to drive and measure the gryos (and the accelerometers). It also drives the sextant optics for star sighting in the CM (thus you see the knobs labeled Sxt Shaft and Sxt Trun) Those same circutis would be used with the Rendezvous Radar for the PSA installed in a LM. > Apollo documents are probably VERY hard to come by these days. They are being rapidly and steadily digitized and made available. Many of the PSA schematics are now accessible. The test point adapter itself is not going to be easy to find, but you can find the wiring harness schematics that would tell you what each of your 91 leads in the connector does. Carl

7 years, 3 months

Things to do in Australia & New Zealand?

by pat＠vax11.net

I'm going to be in Australia and then New Zealand for most of June, and was wondering if there was anything interesting classic computer wise to visit? I'm planning on being in Sydney for the Australia half of the trip, and haven't made many plans for New Zealand yet besides flying in/out of Auckland. Pat

7 years, 3 months

PDP-11 Rack

by useddec＠gmail.com

Hi Thomas, I tried to call but couldn't reach you. I think I can have it picked up before then, but have a few questions. Thanks, Paul 217 766 7690

7 years, 3 months

PDP-11 Rack For Sale

by tsraguso＠gmail.com

I have an empty PDP-11 rack that must be gone by Thursday, 5/30. I am asking $90 OBO. I also have a UNIBUS SMD disk controller (asking 150). I will ship the controller, but not the rack. I am located in Houston, TX. Thomas Raguso 832 374-2803

7 years, 3 months

Available: Wang 370 book

by anders＠abc80.net

Hi, I got a stash of documentation yesterday. Found a book "WANG 370 calculating system, program library volume 1" which I don't have any use for. Looks to be almost unread, it has become a bit yellow and it has a small sticker on the front page. Printed in 1968. Is there anybody that want's it (free pickup in south Sweden or for postage fee)? /Anders

7 years, 3 months

HP-01 calc watch go withs - brochures, t- shirts, booklets, ad copy who else collecting?

by couryhouse＠aol.com

OK ?Marc.. guess, ?patent ran out. this was eons ago I was involved initally... ?so thus my dated ?"who had and not ?list"... remember the leitz episcopic.. ? phase contrast? system... ighhh...!, ?have,an otholux set up like that... another fun one is the Wild m20 ?with episcopic... bright field AND darkfield. Marc .. yes... as u said....Nomarski microscopy, is Differential phase contrast microscopy. Makes very small height differences (partial wavelength) on mostly planar objects pop out, and creates amazing color effect.... ?the francon yamotto method seems simular in images,and colors... ? -----Original Message----- From: Curious Marc <curiousmarc3 at gmail.com> To: COURYHOUSE at aol.com <couryhouse at aol.com>; cctalk at classiccmp.org <cctalk at classiccmp.org>; spacewar <spacewar at gmail.com> Sent: Mon, May 20, 2019 10:36 PM Subject: Re: HP-01 calc watch go withs - brochures, t- shirts, booklets, ad copy who else collecting? #yiv6703816687 #yiv6703816687 -- _filtered #yiv6703816687 {panose-1:2 4 5 3 5 4 6 3 2 4;} _filtered #yiv6703816687 {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;} #yiv6703816687 #yiv6703816687 p.yiv6703816687MsoNormal, #yiv6703816687 li.yiv6703816687MsoNormal, #yiv6703816687 div.yiv6703816687MsoNormal {margin:0in;margin-bottom:.0001pt;font-size:11.0pt;font-family:sans-serif;} #yiv6703816687 a:link, #yiv6703816687 span.yiv6703816687MsoHyperlink {color:blue;text-decoration:underline;} #yiv6703816687 a:visited, #yiv6703816687 span.yiv6703816687MsoHyperlinkFollowed {color:purple;text-decoration:underline;} #yiv6703816687 p.yiv6703816687msonormal0, #yiv6703816687 li.yiv6703816687msonormal0, #yiv6703816687 div.yiv6703816687msonormal0 {margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:sans-serif;} #yiv6703816687 span.yiv6703816687EmailStyle18 {font-family:sans-serif;color:windowtext;} #yiv6703816687 .yiv6703816687MsoChpDefault {font-size:10.0pt;} _filtered #yiv6703816687 {margin:1.0in 1.0in 1.0in 1.0in;} #yiv6703816687 div.yiv6703816687WordSection1 {} #yiv6703816687 Nomarski microscopy, Ed. Differential phase contrast microscopy. Makes very small height differences (partial wavelength) on mostly planar objects pop out, and creates amazing color effects as a biproduct. Pretty much a stalwart of any good cleanroom microscope. Every manufacturer offers it, usually a pretty expensive option as all your optics have to be stress-free. I dream to own one of these one day. Marc ? From: cctalk <cctalk-bounces at classiccmp.org> on behalf of "cctalk at classiccmp.org" <cctalk at classiccmp.org> Reply-To: "COURYHOUSE at aol.com" <couryhouse at aol.com>, "cctalk at classiccmp.org" <cctalk at classiccmp.org> Date: Monday, May 20, 2019 at 11:20 AM To: "COURYHOUSE at aol.com" <couryhouse at aol.com>, <spacewar at gmail.com>, "cctalk at classiccmp.org" <cctalk at classiccmp.org> Subject: Re: HP-01 calc watch go withs - brochures, t- shirts, booklets, ad copy who else collecting? ? should? say ?Francion Yamamotto? ?not ?Yrancion Yamamotto? ? ? In a message dated 5/20/2019 10:07:04 AM US Mountain Standard Time, couryhouse at aol.com writes: Since? we? have? nice? microscopes at? the museum? project? we? were? hired? to? photo? some IC? innards? years? back. This? ended? up? becoming? a minor obsession? for? a short? time? as? the? artwork under? various? illuminations? is? fantastic.?? ? ? One of the things? that? seemed? to show the mots? difference in? detail between layers and highs? etc... was? differential? interference contrast? (after? nomorski (sp?) ( this? was on our? Ziess Ultraphot? and? seems? to be? a Zeiss? only? ? offering.0? ?on? the? Japanese? side of? things? Nikon? had? ?Yrancion Yamamotto (sp?)? method? which? seems? ?nice? ? but? I? preferred? the? ?Nomeriski. Using? these? ?methods? you? may be? able? to extract? more usable? detail? ?than? with traditional methods.? ?and? wow? the? color? photos? are? ?frame-able! But? ?kinda? what? I? wanted to mention? to is? depending? on? what? era? ?the chips? were? the? over? coatings? ? seemed? to? worsen? the view? the newer the chip? or? so? I? thought at the? time. ? ? ? Such? great? ?fun? to? photo? ?the? little? ic innards!? ?even? a? standard? ?illum.? ?scope? with the? vertical? episcopic? illumination? gives? ?some? ? fun? photos? too,? especially? on the? earlier? ?chips. ? Don't? know? if? any? of? ?this? will help on the? HP-01? roms? but? sure? was? fun to talk about? again ed sharpe archivist for? smecc ? ? ? ? ? In a message dated 5/20/2019 9:00:09 AM US Mountain Standard Time, spacewar at gmail.com writes: Only just within the last month I finally obtained a ROM dump from a production HP-01, for potential use in my Nonpareil simulator. Previously I only had the preproduction code listed in a US patent. I'm not sure when I'll have time to actually work on the simulation, though. My original plan had been to crack open an HP-01 module and try to read the ROM bits optically, as Peter Monta did for the HP-35. However, that didn't work, probably due to a passivation coating on the ROM dies. ?

7 years, 3 months

HP-01 calc watch go withs - brochures, t- shirts, booklets, ad copy who else collecting?

by couryhouse＠aol.com

should? say ?Francion Yamamotto? ?not ?Yrancion Yamamotto? In a message dated 5/20/2019 10:07:04 AM US Mountain Standard Time, couryhouse at aol.com writes: Since? we? have? nice? microscopes at? the museum? project? we? were? hired? to? photo? some IC? innards? years? back. This? ended? up? becoming? a minor obsession? for? a short? time? as? the? artwork under? various? illuminations? is? fantastic.?? One of the things? that? seemed? to show the mots? difference in? detail between layers and highs? etc... was? differential? interference contrast? (after? nomorski (sp?) ( this? was on our? Ziess Ultraphot? and? seems? to be? a Zeiss? only? ? offering.0? ?on? the? Japanese? side of? things? Nikon? had? ?Yrancion Yamamotto (sp?)? method? which? seems? ?nice? ? but? I? preferred? the? ?Nomeriski. Using? these? ?methods? you? may be? able? to extract? more usable? detail? ?than? with traditional methods.? ?and? wow? the? color? photos? are? ?frame-able! But? ?kinda? what? I? wanted to mention? to is? depending? on? what? era? ?the chips? were? the? over? coatings? ? seemed? to? worsen? the view? the newer the chip? or? so? I? thought at the? time. Such? great? ?fun? to? photo? ?the? little? ic innards!? ?even? a? standard? ?illum.? ?scope? with the? vertical? episcopic? illumination? gives? ?some? ? fun? photos? too,? especially? on the? earlier? ?chips. Don't? know? if? any? of? ?this? will help on the? HP-01? roms? but? sure? was? fun to talk about? again ed sharpe archivist for? smecc In a message dated 5/20/2019 9:00:09 AM US Mountain Standard Time, spacewar at gmail.com writes: Only just within the last month I finally obtained a ROM dump from a production HP-01, for potential use in my Nonpareil simulator. Previously I only had the preproduction code listed in a US patent. I'm not sure when I'll have time to actually work on the simulation, though. My original plan had been to crack open an HP-01 module and try to read the ROM bits optically, as Peter Monta did for the HP-35. However, that didn't work, probably due to a passivation coating on the ROM dies.

7 years, 3 months

Pleas ID this IBM system....

by jos.dreesen＠greenmail.ch

The seller clearly has no idea, but the starting price is right ! https://www.ebay.de/itm/seltene-Anlage-Puma-Computer-IBM-2020/202646831828?… Jos

7 years, 3 months

Looking for my old ADM-3A

by charlesmorris800＠centurytel.net

I used to have an ADM-3A Dumb Terminal... fixed it up, and made my own lower-case ROM from a 2716 EPROM and a lot of small wires. Sold it around 2005 or so, but can't remember who bought it. Anyway I'd like to buy it back if the current owner is out there and isn't using it :) Thanks Charles --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

7 years, 3 months

M7264 Troubleshooting

by jnc＠mercury.lcs.mit.edu

> From: Mister PDP > After a day of confusing and mixed up signals (I don't really use > this type of equipment very often) .. I switched over to the > oscilloscope Don't feel bad, I too prefer to rely on an oscilloscope by default; not only does it let you see what's really happening (intermediate voltages, noise, etc) but it's simpler, and there are less ways to get incorrent info. > to confirm that the four clock signals on the MCP-1600 chipset were > working properly .. and was able to see that the very basics of the > CPU were working. It's not necessarily good if the 4 clocks (I take it that's what the latter refers to) are working, because if one or more of those were broken, it's a relatively easy/simple fix, whereas if they are working, and the CPU's still not running, it could be a failed CPU chip, and the only fix there is to replace it. > the SRUN signal coming off of the backplane. Note that SRUN isn't crucial to the machine's operation, it's just user info. If SRUN is somehow broken on it's own (i.e. failed component somewhere between where the CPU generates it, and the display LED) finding and fixing that issue won't help. Far more useful, in terms of getting the thing running, would be to know if BSYNC on the QBUS is hopping around (as ODT tries to talk to the console - an easy thing to check into, too). If not, that's a show-stopper that needs to be looked into. > From: Glen Slick > the SRUN L signal is driven on to the backplane bus line AF1. The '78-'78 "microcomputer processors" says (pg. 3-15) that on the LSI-11 it's also on CH1; just to complete the complexity, it also says (pg. 3-32) that on the LSI-11/2 it's also on AH1! > From: Mister PDP > I hooked the oscilloscope up to SRUN off of E68, and found that it > oscillates low at 58.68KHz. .. Hitting the Run/Halt switch does not > have any effect on the period or amplitude of the oscillation. So maybe the CPU is actually running after all? Although turning RUN/HALT to 'HALT' should stop it - the Run light would I think go out when ODT is running. (It certainly does on the /23.) Can you check that BHALT on the QBUS is actually asserted (i.e. 0V) when the switch is in HALT? Noel

7 years, 3 months

Jump to page:

2026

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