test-drb February 2017

test-drb@ccmp.vtda.org

153 participants
189 discussions

by blstuart＠bellsouth.net

On Wed, 2/15/17, jim stephens <jwsmail at jwsss.com> wrote: > I saw her speak twice... I got to hear her speak once when I was a freshman in college before I really knew much about who she was. Yet there were still several things she said that have stuck with me ever since.? Years later I was talking with a retired Navy admiral that I worked with and if I remember correctly how he put it, Hopper was the only person Nimitz was ever scared of. >? But she had only brought a couple of "nanoseconds" and so I > missed a chance to snag one. Alas, I never got one of her nanoseconds either.? But I still love telling my students the story about them. > Very nice lady. >From everything I've heard she was indeed, in addition to being a force of nature. Always wished I had gotten a chance to meet her. BLS

7 years, 10 months

How I came to vintage computers

by COURYHOUSE＠aol.com

Indeed! It is fun to learn what got people interested in the history... and their replies are in some cases interesting history itself! Ed# _www.smecc.org_ (http://www.smecc.org) In a message dated 2/15/2017 10:03:05 A.M. US Mountain Standard Time, nf6x at nf6x.net writes: Thanks for sharing. That was a delightful origin story. -- Mark J. Blair, NF6X <nf6x at nf6x.net> http://www.nf6x.net/

7 years, 10 months

Ted Kaczynski was RIGHT!

by jnc＠mercury.lcs.mit.edu

> From: Toby Thain > Even if your argument weren't absurd and offensive Absurd and offensive is in the eye of the beholder. Can we please drop this topic? Thanks. Noel

7 years, 10 months

New batch of pdp8 OMNIBUS to USB interface! Please Read and react!

by w2hx＠w2hx.com

Personally, i don't care about lead free solder. I am quite happy with lead. Is there a rohs requirement for small production, non profit, prototyping project? ________________________________ From: Philipp Hachtmann <hachti at hachti.de> Sent: Feb 14, 2017 11:54 AM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: New batch of pdp8 OMNIBUS to USB interface! Please Read and react! Hi, > I'm interested. How much did a board from the previous batch cost? Was different. I first made a poll and sold a batch of boards in my online shop for a certain price. It was somewhere about 105 EUR without VAT. After I received the payment, I made the boards and delivered them (I announced exactly that procedere!!). Later, as a few boards were left, I increased the price up to nearly EUR 200. I did it like with kickstarter - the people who trusted and funded got it cheaper. The whole thing barely covered the costs btw. > And > will that be any indication of what the new boards price? No, not really. But I already have some rough idea. The board will most probably be full size again. Reducing the size does seems not to offer enough benefit with respect to the hassle of adding enlargement afterwards. After my poll it looks as if there will be the following options: - Kit with full size board and SMT already soldered RoHS compliant. This will most probably go for short under EUR 100 (without VAT where it applies). I have to check with the assembly house. This time I try not to sit there and solder lead free SMD by hand for days. I like soldering SMT but that lead-free stuff and masses of boards can get quite annoying. The last boards were all hand soldered by me. One problem could be the gold fingers: My usual board house finally realized that their calculation tool was plain wrong when it charged me extra EUR 1,50 per board for the hard gold fingers. The board will be like the old ones but: * some unused (upper bit) IC positions removed * The diode stuff moved away from the edge (that was so stupid, sorry!) * The USB connector will be moved away from the edge, I will think about some holes to fix the cable using a strap. The USB will become mini USB. - Wonderful handle/set of handles to attach to the board. Probably made of milled wood, still thinking about it. This will be extremely expensive, I have no idea yet. Perhaps EUR 30 per "one piece" or set. And if someone really insists, I will manually complete and test a board. That would add another EUR 65 to the game. And perhaps an USB cable. If I continue to sell boards in that way, it will take not even 5 more years until it has paid for my Eagle 6 and 7 licenses.. Please continue to add to the doodle "calendar", if you are interested. Kind regards, Philipp

7 years, 10 months

New batch of pdp8 OMNIBUS to USB interface! Please Read and react!

by COURYHOUSE＠aol.com

I have not heard of 40 mil loop here on ttys... generally 20 mil or 60 mil. - At least what I have encountered. Is the 40 mil. standard in Europe? Ed# _www.smecc.org_ (http://www.smecc.org) In a message dated 2/14/2017 2:24:15 P.M. US Mountain Standard Time, hachti at hachti.de writes: On 14.02.2017 22:18, geneb wrote: > On Tue, 14 Feb 2017, ben wrote: > >> On 2/14/2017 6:27 AM, Alfred M. Szmidt wrote: >>> FWIW, Mini-B connectors are on their way out, nor USB OTG compliant. >>> Though agreed that they are flimsy... Why not just a type A or >>> something? Easy, big, and robust. >>> >> Why not mini and regular? >> Ben. >> PS: Add a 45.5 baud serail port. Control everything with a 5 level >> TTY. :) > > Dirty casual. 20mA current loop or nothing. The 45 baud machines do NOT run on 20mA. They usually run on 40mA :-) 20mA is the domain of model 28, 32, 33 etc.

7 years, 10 months

Mystery QED board

by jnc＠mercury.lcs.mit.edu

> From: Josh Dersch > Sorry, typo. Ah, no wonder I couldn't find it... :-) The memory card (?) - the hex board leaning up against the wall in the middle - does look a lot like the MS95 memory card from the manual (three horizontal DuPont headers at the top, two vertical ones at the bottom, etc) but it also has differences - it doesn't have the two large square chips, etc. (And there's an MS95 in the board list, IIRC.) None of the other boards seem to correspond to anything in the QED 95 manual, though. So, rather a mystery. Quickware Engineering does still have a Web page (http://quickware.com/) which says that "Our core business is providing custom PDP-11 processor emulator upgrades", but it contains little content. Noel

7 years, 10 months

Mystery QED board

by jnc＠mercury.lcs.mit.edu

Does anyone know what the QED board (4th image) in this eBay lot: http://www.ebay.com/itm/322414100718 is? The large chip looks like a J11 chip. However, the only QED PDP-11 board I found mention of online is a high-performance hex board UNIBUS processor, the QED 95. Noel

7 years, 10 months

need (physical) key for Sun SPARCserver 1000e

by barythrin＠gmail.com

Perhaps a silly question but have you poked around local social media for a local unix group? Or a local craigslist ad for someone to borrow a key? I wouldn't think they'd be thst uncommon although admittedly I also stopped/paused a project for similar lack of results a while back (much different system though).

7 years, 10 months

Information Request: unidentified HP 9825T instructions

by jnc＠mercury.lcs.mit.edu

> From: Tony Duell > Having other hardware decode instructions that appear as NOPs to the > main processor is not uncommon in HP machines. Ah, so you actually had some prior knowledge that helped in working out that puzzle, that that's what's happening here! :-) Noel

7 years, 10 months

Mystery QED board

by jnc＠mercury.lcs.mit.edu

> From: Josh Dersch > I think it is a QED 90 -- there are docs on Bitsavers ??? The only file in: http://bitsavers.org/pdf/quickwareEngineering/ is for the QED-95? Noel

7 years, 10 months

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test-drb February 2017