Re: Circuit board trace repair...

2020-08-13 Thread Carlos E Murillo-Sanchez via cctalk
Chuck Guzis via cctalk wrote: On 8/13/20 9:58 PM, dwight via cctalk wrote: How much current is ir suppose to carry? I'd just replace it with a piece of wire wrap wire if it is less than an amp. Of course, I assume you've fixed what ever failed to cause it to blow. Gold wire is expensive. Dwight

Re: Circuit board trace repair...

2020-08-13 Thread Chuck Guzis via cctalk
On 8/13/20 9:58 PM, dwight via cctalk wrote: > How much current is ir suppose to carry? I'd just replace it with a piece of > wire wrap wire if it is less than an amp. > Of course, I assume you've fixed what ever failed to cause it to blow. > Gold wire is expensive. > Dwight According to my table

Re: Circuit board trace repair...

2020-08-13 Thread dwight via cctalk
How much current is ir suppose to carry? I'd just replace it with a piece of wire wrap wire if it is less than an amp. Of course, I assume you've fixed what ever failed to cause it to blow. Gold wire is expensive. Dwight From: cctalk on behalf of John Foust via c

HP Terminal Data from 1987

2020-08-13 Thread Stan Sieler via cctalk
I scanned flyers for the HP terminal line (700/22, 700/41, 700/71, 700/92, and 700/94), and a price list from 1987. Info at http://sieler.com/hp/other/hp_terminals.html Stan

Re: Card edge connectors for individual Qbus wings

2020-08-13 Thread Carlos E Murillo-Sanchez via cctalk
Carlos E Murillo-Sanchez wrote: Greetings, everyone... Does anybody know where I can source card edge connectors (with eyelets or pins on the other side, hopefully) that would fit individual wings in a Qbus board? With regards to the same project, and realizing  that the vt100 keyboard market

HP-UX 7.0 Technical Data flyer

2020-08-13 Thread Stan Sieler via cctalk
I found/scanned/OCR'd the "Technical data" flyer for HP-UX 7.0 (from 1989). It's at: http://www.sieler.com/hp/other/hp_ux_7_0.html Shortly after this, HP quietly dropped the "real time" portion of HP-UX, and in later years no one at HP seemed to know it had ever been there. Stan

Re: DEC VRE01 terminal documentation

2020-08-13 Thread Aaron Woolfson via cctalk
I am crossing my fingers that I stil have the scans of these somewhere, or photocopies these are copies of the original manuals. DigiVue sent me their only originals, which I made copies of and sent back to them at some point - Original Message - From: Aaron Woolfson To:

Re: DEC VRE01 terminal documentation

2020-08-13 Thread Aaron Woolfson via cctalk
Sorry for duplicate emails. Paul did I send you copies of the power supply manuals? One more photo of the power supply. I beleieve that the illumination activation needed to be 109-115 volts, and the sustainer needed to be 74-78 volts. - Original Message - From: Aaron Woolfson

Re: DEC VRE01 terminal documentation

2020-08-13 Thread Aaron Woolfson via cctalk
Here's a photo of one of the restored PLATO terminals (which had the plasma display) Does the power supply for the PLASMA look like the one in this photo of one of the terminals with the covers off? - Original Message - From: Aaron Woolfson To: paulkon...@comcast.net ; u...@ubanp

Re: LSI-11 Simulator from Bob Meister

2020-08-13 Thread Richard Cini via cctalk
Thanks Lars. Interesting article. According to his bio in Circuit Cellar, Bob was a programmer for the NASD (National Association of Securities Dealers) in New York and also wrote PDP-8 and MC6800 simulators. I can find even less on those two. The source code to the LSI11 says "R.W.Meister" so i

Re: DEC VRE01 terminal documentation

2020-08-13 Thread Aaron Woolfson via cctalk
Hi Tom. Thanks for your message. Well, the Plasma panels use a pretty unique. I'm attaching the precise waveforms that the Plasma Panel expects to see in order to achieve the illumination of the dot. And while this may not be exactly or precisely what you're looking for, this will explain muc

Re: DEC VRE01 terminal documentation

2020-08-13 Thread Antonio Carlini via cctalk
On 13/08/2020 22:29, Tom Uban via cctalk wrote: Thanks Aaron. The DEC display is quite a bit newer than the old Plato design. I had one of the Plato terminals at one time and am quite familiar with them. I also had a digivue standalone display at one time, but don't recall what I did with it ov

Re: DEC VRE01 terminal documentation

2020-08-13 Thread Tom Uban via cctalk
Thanks Aaron. The DEC display is quite a bit newer than the old Plato design. I had one of the Plato terminals at one time and am quite familiar with them. I also had a digivue standalone display at one time, but don't recall what I did with it over the course of the years. At that time, I did h

Re: DEC VRE01 terminal documentation

2020-08-13 Thread Tom Uban via cctalk
Thanks Paul. Yes, I know the old Plato plasma display terminals well, having grown up with them as my introduction to computers. The DEC VR01 is a much newer design, though I'm sure it has some similar properties, including a high voltage display. Unfortunately, the display itself never lights a

Re: DEC VRE01 terminal documentation

2020-08-13 Thread Paul Koning via cctalk
You may want to see if the PLATO terminal documentation is any help, look on Bitsavers under University of Illinois. Those plasma display power supplies are hairy devices; the panel is actually a memory device and the power supply produces a high voltage AC waveform to make that work. Those pa

DEC VRE01 terminal documentation

2020-08-13 Thread Tom Uban via cctalk
I have a DEC VRE01 terminal that I bought NIB years ago. For those who don't know about this model, it has a flat plasma (orange/black) display of about 17". It worked when I bought it, but now, years later, I tried powering it up and the light comes on for a moment and goes out. I suspect a pow

Re: Card edge connectors for individual Qbus wings

2020-08-13 Thread Carlos E Murillo-Sanchez via cctalk
systems_glitch via cctalk wrote: Douglas's boards are good quality, but IMO their edge connector socket is inappropriate for DEC boards. It's not deep enough, it does make contact but on e.g. the extender cards, it doesn't provide enough mechanical support for the boards, like the old DEC extende

Re: Card edge connectors for individual Qbus wings

2020-08-13 Thread Carlos E Murillo-Sanchez via cctalk
Glen Slick via cctalk wrote: Do you want something to plug into a backplane, or something to plug a board into? If the latter, Douglas Electronics lists a double wide connector with their part number 72-125C-EL. -snip- On Wed, Aug 12, 2020, 9:24 PM Carlos E Murillo-Sanchez via cctalk < cctalk@cl

Re: LSI-11 Simulator from Bob Meister

2020-08-13 Thread jim stephens via cctalk
On 8/13/2020 9:26 AM, Richard Cini via cctalk wrote: Ha, yes, P != W. I have actually found several Bob Meisters, but it's like Where's Waldo. On 8/13/20, 12:04 PM, "cctalk on behalf of Lars Brinkhoff via cctalk" wrote: Richard Cini wrote: > I found this by Robert P. Meiste

Re: LSI-11 Simulator from Bob Meister

2020-08-13 Thread Lars Brinkhoff via cctalk
Richard Cini wrote: > Ha, yes, P != W. I have actually found several Bob Meisters, but it's > like Where's Waldo. People should have unique names to make it easier for us stalkers! I have been trying to find Edward H. Black, ex MIT Dynamic Modeling.

Re: LSI-11 Simulator from Bob Meister

2020-08-13 Thread Richard Cini via cctalk
Ha, yes, P != W. I have actually found several Bob Meisters, but it's like Where's Waldo. On 8/13/20, 12:04 PM, "cctalk on behalf of Lars Brinkhoff via cctalk" wrote: Richard Cini wrote: > I found this by Robert P. Meister at Battelle Columbus labs. > > The source code to

Re: LSI-11 Simulator from Bob Meister

2020-08-13 Thread Lars Brinkhoff via cctalk
Richard Cini wrote: > I found this by Robert P. Meister at Battelle Columbus labs. > > The source code to the LSI11 says "R.W.Meister" so it's likely the > same chap. But P. isn't the same as W. :-(

Re: Card edge connectors for individual Qbus wings

2020-08-13 Thread systems_glitch via cctalk
Douglas's boards are good quality, but IMO their edge connector socket is inappropriate for DEC boards. It's not deep enough, it does make contact but on e.g. the extender cards, it doesn't provide enough mechanical support for the boards, like the old DEC extenders do. I suppose it's what we're st

Re: Card edge connectors for individual Qbus wings

2020-08-13 Thread Glen Slick via cctalk
Do you want something to plug into a backplane, or something to plug a board into? If the latter, Douglas Electronics lists a double wide connector with their part number 72-125C-EL. http://www.douglas.com/index.php/72-125c-el.html They also list double wide and quad wide extender cards, which o

Re: Circuit board trace repair...

2020-08-13 Thread John Foust via cctalk
At 05:33 PM 8/12/2020, Doc Shipley via cctalk wrote: >When I worked for Texas Instruments in '83, we used 30ga 24K gold wire... And these days, that's sold by the inch? - John