[cctalk] Re: Computers in the Paul Allen collection

Anyone want to guess what the Xerox Alto will (should) sell for? 73 Eugene W2HX My Youtube Channel: https://www.youtube.com/@w2hx/videos -Original Message- From: Paul Koning via cctalk Sent: Wednesday, August 21, 2024 3:25 PM To: cctalk@classiccmp.org Cc: Paul Koning Subject

[cctalk] Re: Revocable Living Trust for Computer Collectors

None of our survivors will give a rats-arse about getting even a nickel for this stuff. All they will want is for it to be gone. They would probably even pay to have it carted away. So I don't think any economic analysis of how to dispose of a collection to maximize return is relevant. Sent

[cctalk] Re: teletype roll as an RF termination load

Yes I do rtty and I use mechanical equipment. Several of us use military standards and military equipment. I show some of this on my Youtube Channel which can be found at @w2hx Sent from Nine<http://www.9folders.com/> From: ben via cctalk Sent: Wed

[cctalk] Re: teletype roll as an RF termination load

"teletype rolls" what, like rolls of paper? They are not effective as dummy loads. Sent from Nine From: Fritz Mueller via cctalk Sent: Wednesday, June 12, 2024 6:56 PM To: General Discussion: On-Topic and Off-Topic Posts Cc: Fritz Muel

[cctalk] DEC Qbus/Massbus?

Was there ever a massbus controller card for qbus systems? 73 Eugene W2HX My Youtube Channel: https://www.youtube.com/@w2hx/videos

[cctalk] Re: 5,34 Petaflop System Cheyenne

cctalk Sent: Saturday, May 4, 2024 12:41 PM To: W2HX via cctalk Cc: Jon Elson Subject: [cctalk] Re: 5,34 Petaflop System Cheyenne On 5/4/24 10:21, W2HX via cctalk wrote: > I wonder how well that machine would do at bitcoin mining > Umm, it will consume about 4000 Dollars of electricity per day!

[cctalk] Re: 5,34 Petaflop System Cheyenne

I wonder how well that machine would do at bitcoin mining Sent from Nine From: CAREY SCHUG via cctalk Sent: Saturday, May 4, 2024 12:28 AM To: General Discussion: On-Topic and Off-Topic Posts Cc: CAREY SCHUG Subject: [cctalk] Re: 5,34 Pet

[cctalk] Re: 5,34 Petaflop System Cheyenne

Someone seems to want it. Bidding is at $250,000 and counting. I guess someone didn’t get the memo about getting just a few nvidia cards! 73 Eugene W2HX My Youtube Channel: https://www.youtube.com/@w2hx/videos -Original Message- From: Gavin Scott via cctalk Sent: Friday, May 3

[cctalk] Re: PDP-11 thingy. What is it?

Thanks everyone! 73 Eugene W2HX My Youtube Channel: https://www.youtube.com/@w2hx/videos -Original Message- From: Carlos E Murillo-Sanchez via cctalk Sent: Thursday, April 11, 2024 12:37 AM To: Glen Slick via cctalk Cc: Carlos E Murillo-Sanchez Subject: [cctalk] Re: PDP-11 thingy

[cctalk] Re: PDP-11 thingy. What is it?

perfectly good working ones? Anyone know if there is any value in keeping the FC-202 or just keep with the DEC cards? 2. Any idea on that other card? https://w2hx.com/?prefix=x/What-Is-It/PDP-11-Thing/Board1/ Thanks guys! 73 Eugene W2HX My Youtube Channel: https://www.youtube.com/@w2hx/videos

[cctalk] PDP-11 thingy. What is it?

gnize it? https://w2hx.com/?prefix=x/What-Is-It/PDP-11-Thing/Board2/ Any info appreciated! 73 Eugene W2HX My Youtube Channel: https://www.youtube.com/@w2hx/videos

[cctalk] WAS: Amoeba OS, Now: VAX/VMS Licensing?

this? 73 Eugene W2HX My Youtube Channel: https://www.youtube.com/@w2hx/videos -Original Message- From: Antonio Carlini via cctalk Sent: Sunday, March 31, 2024 6:29 PM To: cctalk@classiccmp.org Cc: Antonio Carlini Subject: [cctalk] Re: Amoeba OS On 28/03/2024 23:29, Alexander

[cctalk] Re: How to shutdown RT11?

W2HX My Youtube Channel: https://www.youtube.com/@w2hx/videos -Original Message- From: Bill Gunshannon via cctalk Sent: Thursday, March 21, 2024 9:23 PM To: W2HX via cctalk Cc: Bill Gunshannon Subject: [cctalk] Re: How to shutdown RT11? On 3/21/2024 9:19 PM, W2HX via cctalk wrote

[cctalk] How to shutdown RT11?

I just got a pdp-11 to boot and it seems to have rt-11 installed. How do I do an orderly shutdown? Google has info on simh but this ain't that. Thanks! 73 Eugene w2hx

[cctalk] Re: Decwriter III self test issue?

Sorry! 73 Eugene W2HX My Youtube Channel: https://www.youtube.com/@w2hx/videos -Original Message- From: Lee Courtney via cctalk Sent: Sunday, March 3, 2024 5:03 PM To: General Discussion: On-Topic and Off-Topic Posts Cc: Lee Courtney Subject: [cctalk] Re: Decwriter III self test iss

[cctalk] Re: Decwriter III self test issue?

I thought I'd send a follow up that I have fixed the decwriter (whew)... A little lube goes a long way! Vid below. https://youtu.be/mJH3GPIvBvs 73 Eugene W2HX My Youtube Channel: https://www.youtube.com/@w2hx/videos -Original Message- From: W2HX via cctalk Sent: Thursday, Feb

[cctalk] Decwriter III self test issue?

roperly. I haven't tried any external serial connection yet. 73 Eugene W2HX My Youtube Channel: https://www.youtube.com/@w2hx/videos

[cctalk] Re: Silly question about S-100 and video monitors

Ok great info, everyone. Thanks for the information! 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos -Original Message- From: William Sudbrink Sent: Wednesday, August 30, 2023 5:06 PM To: 'General Discussion: On-Topic and Off-Topic Posts

[cctalk] Silly question about S-100 and video monitors

. 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos

[cctalk] Re: Logic Analyzers - HP/Agilent 16700B or 1670G?

Or this looks cool http://www.retrocmp.com/tools/qprobe/327-qprobe2023-overview 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos -Original Message- From: Martin Bishop via cctalk Sent: Sunday, August 20, 2023 4:42 PM To: General Discussion: On

[cctalk] Re: Talking PDP11

And by 1979 there was the fairlight... https://en.wikipedia.org/wiki/Fairlight_CMI 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos >Speaking of old computerized music playing technology, there are two from the >PLATO system at the University of Il

[cctalk] Re: Linotype and other printing machines available

What am I missing? I can't find any photos in the links provided. I can't even find a subdirectory called linotype under the temp directory? 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos -Original Message- From: Paul Koning via cct

[cctalk] Re: Altair 8800 question

Ok thanks everyone for the clarification. 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos -Original Message- From: Brent Hilpert via cctalk Sent: Tuesday, May 9, 2023 2:29 PM To: General Discussion: On-Topic and Off-Topic Posts Cc: Brent

[cctalk] Altair 8800 question

r units vs earlier units? 73 Eugene W2HX Check out my Youtube Channel: https://www.youtube.com/@w2hx/videos

[cctalk] Re: DEC RL device

to find documentation? Or even what the name/model of the product might be for googling? 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos -Original Message- From: Paul Koning via cctalk Sent: Monday, May 1, 2023 8:33 AM To: cctalk@classiccmp.org Cc

[cctalk] DEC RL device

, should I not use it for fear of destroying an RL platter? https://w2hx.com/?prefix=x/VintageComp/Platter-Device/ 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos

[cctalk] Re: flipchip cleaning and pin corrosion inhibition

f too much moisture is absorbed. For this reason, it is recommended not to use water or water-soluble solvents to clean these components. Alcohol or hydrocarbon solvents are recommended for rinsing." 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos ---

[cctalk] Re: VCF East 2023 photos

Links are working now. Maybe a problem on my side, or maybe there were fixed. But thanks again for posting this 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos -Original Message- From: W2HX via cctalk Sent: Monday, April 17, 2023 1:52 PM To

[cctalk] Re: VCF East 2023 photos

Thanks for taking the time to document the show. I went to the link provided and only PART 1 and PART 6 link to other pages. Are parts 2-5 just not written yet? Or a bug in the html? 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos -Original Message

[cctalk] Re: mainframe vs mini

hone. Internet services ompanies like iVillage and many others were using it. Some IBM internet software also used this but I can't recall the names. But surely Apple jumped on the bandwagon with their iMac colorful cube thing in 1998 or thereabouts. But in general, I agree with t

[cctalk] Re: mainframe vs mini

power but benefitted from low ripple. 73 Eugene W2HX -Original Message- From: Paul Koning via cctalk But apart from circular motion (i.e., feeding motors) there is a second reason to use three phase power: reduced ripple. Full wave rectification of n Hz mains power gives you a 2n

[cctalk] Re: on the origin of home computers

I loved it. I would only suggest a human narrator like your daughter would be great. But I don't like the computer generated narration (I am right about the computer narrator, aren't I?). -Original Message- From: Steve Lewis via cctalk Sent: Wednesday, March 8, 2023 11:54 AM To: Gener

[cctalk] Re: Inline Serial Device?

back uarts, an MCU would certainly be the way to go. 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx -Original Message- From: Mike Stein via cctalk Sent: Saturday, November 12, 2022 3:09 PM To: General Discussion: On-Topic and Off-Topic Posts Cc: Mike Stein Su

[cctalk] Re: Inline Serial Device?

it to trigger a relay instead of a change of port. But before I went down that path, I thought I'd ask if anyone knew something more fit for purpose. Seems not and either this black box unit with a hack or a mcu might be my options. Thanks all! 73 Eugene W2HX Subscribe to my Youtube Chan

[cctalk] Inline Serial Device?

output? Some kind of box? Does anyone know of such a thing? I guess it could be cobbled up with a microcontroller, but hoping to just get something "off the shelf." Thank you 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx

[cctalk] Re: Soviet PDP clones

This is an excellent video on the history of Soviet computing and the causes of their lagging behind the west. I cannot comment on the accuracy since I am no expert in this subject. But a very interesting and informative video. https://www.youtube.com/watch?v=dnHdqPBrtH8 73 Eugene W2HX

[cctalk] Re: Wang bar napkin story [WAS:RE: Re: "Revival" of a dedicated Micropolis webpage on internet]

I always thought it was interesting how 5 1/4 is 3U (rack units). I thought there might have been some relationship to that. But could have been just coincidence. 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos -Original Message- From: Tom

[cctalk] Re: Dec rl02 disk pack shelf design

packs and storing them in many linear feet of desktop wire holders might not be an efficient way to store them. 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos -Original Message- From: Jonathan Chapman via cctalk Sent: Tuesday, August 9

[cctalk] Re: VT220 North of Boston

haha 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos -Original Message- From: Hagstrom, Paul via cctalk Sent: Monday, August 8, 2022 5:32 PM To: General Discussion: On-Topic and Off-Topic Posts Cc: Hagstrom, Paul Subject: [cctalk] Re

[cctalk] Re: VT220 North of Boston

North Andover, MA or North Andover WI? 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos -Original Message- From: Dave Mitton via cctalk Sent: Saturday, August 6, 2022 10:34 PM To: cctalk@classiccmp.org Cc: Dave Mitton Subject: [cctalk

[cctalk] Re: BBS memorabilia

>“yellow pages” Do you recall what this was called? I remember (vaguely) something called the "Yanoff List" which was an attempt at a paper catalog of websites. 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos -Original Message---

RE: new Z80 monitor ROM works with no RAM

Dang! That Z80 computer looks AWESOME. Is there a website that talks about it? Is this a homebrew project or something he plans to make available as a kit? 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos -Original Message- From: cctalk On

RE: Advice on Desoldering an IC

Indeed! Great investment. 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos -Original Message- From: cctalk On Behalf Of Rob Jarratt via cctalk Sent: Friday, April 22, 2022 2:04 PM To: 'General Discussion: On-Topic and Off-Topic

RE: Advice on Desoldering an IC

ative. The dust may form flammable mixtures with air." 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos -Original Message- From: cctalk On Behalf Of Chuck Guzis via cctalk Sent: Friday, April 15, 2022 7:42 PM To: Fred Cisin via cctal

RE: Advice on Desoldering an IC

rking device just to try it in another device I was repairing. Then I put it back. I had no concern about damaging the chip. I used to use the wick/sucker approach from childhood until about 20 years old. I always hated the results. Hakko is a game changer for me. 73 Eugene W2HX Subscribe to my Yo

RE: Retro networking / WAN communities

I could be wrong, but I always thought the distinction between hub and bridge was, all traffic is broadcast to all ports on a hub. A bridge allows traffic to be segregated (albeit still on the same subnet). 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel

RE: Retro networking / WAN communities

Internet message processor (BBN I think) 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos -Original Message- From: cctech On Behalf Of Wayne S via cctech Sent: Tuesday, April 12, 2022 1:24 PM To: Grant Taylor Cc: General Discussion: On

RE: LSSM is chasing this, was Re: General Data? Computer

hought was the invention). But notably, vacuum tube technology that existed in 1919 might be hard-pressed to be up to the task. I look forward to doing some more research on this topic. Thanks! 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos -Or

RE: Found! Ge 115 computer brochure

Btw I have since resent the message with a link to the .jpg but I don't think it has come through. I suspect both images and links may be verboten on this list. Ironic considering the advanced technical proclivities of the membership! 73 Eugene W2HX Subscribe to my Youtube Channel:

RE: Found! Ge 115 computer brochure

Y/Art/Dutch-Windmill.jpg 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos -Original Message- From: cctalk On Behalf Of Christian Corti via cctalk Sent: Tuesday, March 15, 2022 4:09 AM To: General Discussion: On-Topic and Off-Topic Posts Subjec

RE: Found! Ge 115 computer brochure

Here is some Baudot Art. Hot off the model 28 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos -Original Message- From: cctalk On Behalf Of Fred Cisin via cctalk Sent: Sunday, March 13, 2022 5:33 PM To: General Discussion: On-Topic and Off

RE: Rack Discussion Continued - Slide lubricant

> then grease them with light, white lithium grease. Fully agree! 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos

RE: Testing H745 Regulators

et on both 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos -Original Message- From: cctalk On Behalf Of Rob Jarratt via cctalk Sent: Wednesday, January 26, 2022 6:42 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Testing

RE: DEC 3000/600 Alphaserver problems

he bad component. In case the power supply has any inductors that might suffer from a shorted tant, I would remove and use my own bench supply as described above. Good luck! 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos -Original Message--

RE: Source for replacement caps in H744 regulators

not. I don’t know if what you are hearing is transformer hum, but if it is, you may just have to live with it. 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos -Original Message- From: cctalk On Behalf Of Matt Burke via cctalk Sent: Thursd

RE: Apple I auction

Anyone know what this sold for? 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos -Original Message- From: cctalk On Behalf Of s shumaker via cctalk Sent: Friday, October 22, 2021 9:07 PM To: General Discussion: On-Topic and Off-Topic Posts

RE: VAX 780 on eBay

, DC filtering becomes an issue. 73 Eugene W2HX Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos -Original Message- From: cctalk On Behalf Of Jonathan Chapman via cctalk Sent: Saturday, January 1, 2022 2:35 PM To: Grant Taylor ; General Discussion: On-Topic

RE: VAX 780 on eBay

lot of effort (locate a terminal/pc, wire it up, figure out where to plug it into the 780, etc. If this guy is a bulk dealer I would be surprised if he has the knowledge to do anything more than a power test which, again, would not be very useful and could even be detrimental. 73 Eugene W2HX

RE: DEC PDP-8/e Omnibus backplane lubrication

on. So unless I misread the article, I'm still happy with my suggestion to the op. 73 Eugene W2HX -Original Message- From: cctalk On Behalf Of Al Kossow via cctalk Sent: Tuesday, May 11, 2021 6:06 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: DEC PDP-8/e Omn

RE: DEC PDP-8/e Omnibus backplane lubrication

Very interesting. In probably 30 years I've been repairing equipment and among the dozen or so electronics forums I belong to, you may be the first person I've run across to throw some shade on that product. I've never heard any concerns or warnings about it. And there are some rather reputable

RE: DEC PDP-8/e Omnibus backplane lubrication

I would use caig deoxit. They have a version that has lubrication properties. I think it is the "S" series. Eugene -Original Message- From: cctalk On Behalf Of Tom Hunter via cctalk Sent: Monday, May 10, 2021 11:14 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: DEC PD

RE: 400 Hz

I will add that aircraft are one of the main users of 400 Hz. This is because weight is always an critical design consideration. So with smaller transformers, smaller capacitors, etc, you can save a LOT of weight on electronic devices in an aircraft. 73 Eugene W2HX -Original Message

RE: cctalk Digest, Vol 76, Issue 29

> I can still count quite rapidly up to 31 on one hand (either one). That is a neat trick. I have a hard time counting to 21 unless I take off my pants. 73 Eugene W2HX -Original Message- From: cctalk On Behalf Of Mark Moulding via cctalk Sent: Saturday, January 30, 2021 3:45 PM

RE: Apple 1 and memorabilia up for auction in Boston (NOT on Epay)

What am I missing? The picture shown on RR auctions shows the board with no chips? -Original Message- From: cctalk On Behalf Of Adrian Stoness via cctalk Sent: Thursday, December 10, 2020 10:32 PM To: Ali ; General Discussion: On-Topic and Off-Topic Posts Subject: Re: Apple 1 and memo

neat VGA tester

For you folks that work on machines with VGA monitors. https://www.mpja.com/11-16-20.asp?r=344017&s=2 I don't own one but it seemed interesting enough to pass on. 73 Eugene W2HX

RE: Soldering DB connectors

Crimp pins 100%! -Original Message- From: cctalk On Behalf Of Chuck Guzis via cctalk Sent: Wednesday, November 11, 2020 8:11 PM To: dwight via cctalk Subject: Re: Soldering DB connectors On 11/11/20 2:19 PM, dwight via cctalk wrote: > I've not had issues just soldering the wires on. I'

RE: [HECnet] RSTS/E patches

Are these patches discussed below only for patching SIMH to fix problems with it? Or are these fixes that are for actual PDP hardware implementations of RSTS? -Original Message- From: cctalk On Behalf Of Tony Nicholson via cctalk Sent: Monday, September 14, 2020 6:10 PM To: hec...@updat

article on TRS-80 in Nuts and Volts

Don't know if anyone gets/reads this old rag but I thought I'd share an article I came across: https://www.nutsvolts.com/magazine/article/the-trs-80-model-1 73 Eugene W2HX

VAX 11-780 Rack Available

or other DEC set up! Contact me directly. 73 Eugene W2HX PS Please pass onto any other list you may belong to that might have an interest in this rack. Thank you

RE: IDE-SD adapter question

d use that? I only have windows 7 or 10 machines available to me (other than some PDP machines!) I don't need very much space. I would like to run windows 95 and two or three other programs. Eugene -Original Message- From: Jonas M Sent: Sunday, June 28, 2020 1:47 AM To: W2HX

RE: IDE-SD adapter question

Re: IDE-SD adapter question On Fri, Jun 26, 2020 at 09:39:57PM +, W2HX via cctech wrote: > Thanks for previous help on this project. I am working on an old 486 > computer and I have replaced a 40 pin IDE hard drive with this SD adapter... > https://www.amazon.com/gp/pro

RE: IDE-SD adapter question

Could it be related to the fact that it is a 2GB SD card and I believe IDE controllers of that day could only address something like 500MB? Should I consider trying to partition the SD card into a 500MB partition? Eugene From: Richard Cini Sent: Friday, June 26, 2020 6:08 PM To: W2HX

IDE-SD adapter question

Hi all, Thanks for previous help on this project. I am working on an old 486 computer and I have replaced a 40 pin IDE hard drive with this SD adapter... https://www.amazon.com/gp/product/B07G29TZPS/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1 In general it seems to mostly be working. I can

RE: IDE Hard Drive Question

Hard Drive Question On 6/25/2020 11:20 PM, Chuck Guzis via cctech wrote: > On 6/25/20 4:12 PM, Jon Elson via cctech wrote: >> On 06/25/2020 05:29 PM, W2HX via cctech wrote: >>> Does ANYONE have any idea what these 4 wires are connected to and why? >>> And anyone give any

IDE Hard Drive Question

r from working? Any and all suggestions/advice welcome. 73 Eugene W2HX

RE: State of New Jersey needs COBOL programmers

Not sure about that. I worked for Pershing in Jersey City around that time. They were (are?) a clearing house for tens of millions of dollars' worth of stock and bond trades every day. Lots of cobol to be remediated still in 1999. Oh, and I also worked on decimalization (stocks used to be traded

Re: First Internet message

software is currently non-patentable. Not sure the order of when it was/wasnt but currently is not. From: cctalk on behalf of Paul Koning via cctalk Sent: Thursday, December 26, 2019 5:09 PM To: Fred Cisin; General Discussion: On-Topic and Off-Topic Pos

Re: DEC KA650 VAX memory troubleshooting

Wow. Very nicely done! Which logic analyzer did you use to capture those displays? 73 Eugene W2HX From: cctalk on behalf of Joseph Zatarski via cctalk Sent: Sunday, November 24, 2019 1:28 AM To: General Discussion: On-Topic Posts Subject: Re: DEC KA650

Re: UniBone: Linux-to-DEC-UNIBUS-bridge, year #1

Is the BBB not fast enough to do Qbus? Meaning, for qbus, would a FPGA be necessary? Or was this just the op's choice among many possible options? It does seem useful to have this thing run linux and ethernet and be able to pass files (data and programs) back and forth very easily. the FPGA app

Re: UniBone: Linux-to-DEC-UNIBUS-bridge, year #1

functionality. I don't know how many people know how to program an FPGA (or maybe a lot of peope do, but just not me :) 73 es GUD DX Eugene W2HX From: cctalk on behalf of Nigel Johnson via cctalk Sent: Friday, November 15, 2019 3:26 PM To:

Re: UniBone: Linux-to-DEC-UNIBUS-bridge, year #1

LOVE the ideas, loved it when I first heard of it. But I'm a QBUS guy! Put me on the list when (if) you ever make one for qbus. GREAT idea! Eugene From: cctalk on behalf of Jörg Hoppe via cctalk Sent: Friday, November 15, 2019 8:07 AM To: General Discus

Re: TRS-80 Fireworks

Be sure to read this article. The caps used in this capacity (pun intended) are specialized... https://www.allaboutcircuits.com/technical-articles/safety-capacitor-class-x-and-class-y-capacitors/ From: cctalk on behalf of Marvin Johnston via cctalk Se

Re: Pertec Interface Cable Length

speed of the interface was slow enough to cope (you were probably within spec). > I seem to remember they were ribbon cables with each odd/even pair twisted which probably meant one active and one ground twisted together. Or differential pairs. 73 Eugene W2HX _

Re: Pertec Interface Cable Length

>Would folding the excess cable up and covering with anti-static plastic help? unlikely. The typical problem is that the longer the cable, the higher the capacitance of the transmission line. Therefore you get a lot of problems with rising and trailing edges of the signals which can cause all k

Re: DEC MS630/M7609 Question

e the first time wikipedia was wrong... Eugene From: Lyle Bickley Sent: Tuesday, July 9, 2019 6:08 PM To: cct...@classiccmp.org Cc: W2HX Subject: Re: DEC MS630/M7609 Question On Tue, 9 Jul 2019 21:11:39 + W2HX via cctech wrote: > Hi there. >

DEC MS630/M7609 Question

Hi there. I just acquired a board with the number M7609. It was advertised as an M630-CA which my research tells me is supposed to be 16MB. How do I tell on the board if this is 8MB or 16MB? There does not seem to be a suffix on the board that I can see. What to look for? 73 Eugene W2HX

RL01 Platter Removal?

?Hi all, I have a crashed RL01 disk (very crashed). I'd like to remove it from the plastic cover to display it. I opened up the case but cannot figure out how to remove the platter? I took 4 philips screws out which only served to remove a metal ring. It seems that the handle is somehow atta

Re: Uniprobe

I hope the creator of the uniprobe will someday create a Q probe! From: cctalk on behalf of Jim Manley via cctalk Sent: Saturday, June 1, 2019 2:35 AM To: marc.how...@ieee.org; Marc Howard; General Discussion: On-Topic and Off-Topic Posts Subject: Re: Un

Re: 11/93 Rebuild

I would love it if anyone on this list who maintains a wiki for PDP-11's could collect all of the various methods and instructions. I am still far from ready to do things like this (moving images to a PDP) but it is in my future. I could go through all the emails in the archive on the subject (t

RE: apollo psa test point adaptor

Too funny that was 73 Eugene W2HX -Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Will Cooke via cctalk Sent: Tuesday, May 21, 2019 1:58 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: apollo psa test point adaptor > On May

Re: apollo psa test point adaptor

>BTW I got my Apollo IRIG at the same auction that Adrian got the Apollo PSA >tester from. Wow, didn't know that NASA had testers for prostate specific antigen!

Re: DEC disc pack inspection unit on eBay

What is this used for? RL02's or something? and what does it do? From: cctalk on behalf of Bob Rosenbloom via cctalk Sent: Friday, May 10, 2019 1:49 AM To: cctalk Subject: DEC disc pack inspection unit on eBay There's a mis-categorized disk pack inspect

Re: Fujitsi 2444AC 9-track tape drive/PDP-11

>>But plain old flat straight ribbon cable in a 10" length will do for the 2444; even at 6250, frequencies aren't much higher than 1MH Sounds like I might be ok. Except mine are 10 feet not inches! I guess I'll just have to try them out. Thanks everyone!

RE: Fujitsi 2444AC 9-track tape drive/PDP-11

Oh, oops. That went completely over my head. I missed that detail entirely. We'll keep our fingers crossed that this will work :( 73 Eugene W2HX -Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Dennis Boone via cctalk Sent: Wednesday, May 01, 2

RE: Fujitsi 2444AC 9-track tape drive/PDP-11

I got a great pair of cables for this project. 50 conductor, 50 pin IDC, 10 feet long. http://w2hx.com/x/VintageComp/Fujitsu-2444AC/50pin-10feet.jpg Cost was $35 all in for the pair of 10' cables. Not bad considering 50 pin ribbon isn't cheap plus connectors plus time. 73 E

PDP-11/83 w/FPU?

?Hi friends. I am putting together a PDP-11 set up. i have a few CPUs available to me, a 11/23+, an 11/73 and I also have available to me an 11/83, M8190-AE . I would like to try to run as many different OS's as may interest me, including some unixes as possible (bsd...etc). My question is, ar

Re: Fujitsi 2444AC 9-track tape drive/PDP-11

omise. From: cctalk on behalf of Glen Slick via cctalk Sent: Thursday, April 11, 2019 9:10 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: Fujitsi 2444AC 9-track tape drive/PDP-11 On Thu, Apr 11, 2019 at 5:55 PM W2HX via cctalk

Re: Control Console, but not PDP-10

And don't forget about the 25% buyer's premium! Wow From: cctalk on behalf of Ethan Dicks via cctalk Sent: Friday, April 12, 2019 1:59 AM To: Paul Birkel; General Discussion: On-Topic and Off-Topic Posts Subject: Re: Control Console, but not PDP-10 On Fr

Re: Fujitsi 2444AC 9-track tape drive/PDP-11

-track tape drive/PDP-11 On Mon, Mar 18, 2019 at 8:35 PM W2HX via cctalk wrote: > > Now for some questions. > > 1. I've been told the QT13 is a very good card to interface here. I've > been looking for a while on ebay without luck. I do see a QT14 on ebay right >

Re: TeleVideo's MmmOST

fascinatingly advanced for 1981. From: cctalk on behalf of Patrick Finnegan via cctalk Sent: Wednesday, April 10, 2019 4:50 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: TeleVideo's MmmOST I've been adding a few more blog posts, and p

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