May 2020 - vcf-midatlantic - lists.vcfed.org

UPS (Uninterruptible Power Supplies) was: How's Everyone Doing
by Jeffrey Brace 30 Nov '20

30 Nov '20

I decided to make a new thread since there is a lot of interest in this topic, etc. @Dave Mcguire. Thanks for the tip on where to buy replacement batteries. As far as I know APC is the most recommended brand. I see others are using Panasonic. I'm curious to know which brands everyone recommends or discourages? On Fri, Apr 24, 2020 at 1:02 PM Mike Loewen via vcf-midatlantic < vcf-midatlantic(a)lists.vcfed.org> wrote: > On Fri, 24 Apr 2020, Ethan O'Toole via vcf-midatlantic wrote: > > > I used to work for a large music streaming provider and we had thousands > and > > thousand of servers. The data center would put out a notice that they're > > going to do UPS maintenance or Switchgear maintenance... and usually > that > > night we would have maybe up to 20 servers have issues. Hard hang or > maybe a > > reboot. Meanwhile everything looked okay. > > At one point, I had a production server in the data center, an IBM > RS6000 > with redundant power supplies (2). The techs were moving systems to a > different power bus and unplugged one of the supplies: my system promptly > shut > down. It turned out that my system required THREE power supplies before > redundancy was in effect. Oops. > > > Mike Loewen mloewen(a)cpumagic.scol.pa.us > Old Technology http://q7.neurotica.com/Oldtech/ > -- ========================================= Jeff Brace Vice President & Board Member, VCF East Showrunner Vintage Computer Federation http://www.vcfed.org/ jeffrey(a)vcfed.org -- ========================================= Jeff Brace Vice President & Board Member, VCF East Showrunner Vintage Computer Federation http://www.vcfed.org/ jeffrey(a)vcfed.org

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Re: [vcf-midatlantic] Museum report - 12/16/18
by Douglas Crawford 04 Jul '20

04 Jul '20

Again? This isn't getting through. On 12/17/2018 12:28 PM, Douglas Crawford wrote: > Great day at the museum. Visitor flow was non stop in the afternoon. > I am grateful for the assistance of Chris and Tony, with their help we > cycled > through the visitors and gave everyone good attention. > Its fun to docent in teams! > > The museum looked sharp and with Tony's help we had most everything > running that is > demo-able.

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VCF West 2020 is going virtual - call for class instructors
by Jeffrey Brace 31 May '20

31 May '20

VCF West has decided to go virtual due to the uncertainty of being able to have large gatherings at the Computer History Museum where the show normally takes place. We are looking for class instructors to submit a 30 minute video on a how-to subject which will be shown to the virtual audience and be followed by a live Q&A session. Deadline for the video will be July 1. The virtual show will be August 1 from 10AM to 6PM Pacific Time. You can send me a private message with questions. Or you can send an e-mail to Erik Klein with your idea for a class: erik(a)vcfed.org -- ========================================= Jeff Brace Vice President & Board Member, VCF East Showrunner Vintage Computer Federation http://www.vcfed.org/ jeffrey(a)vcfed.org

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Re: [vcf-midatlantic] First PS/2 style IBM display
by Bill Degnan 31 May '20

31 May '20

Rare items get more $$ On Sat, May 30, 2020, 1:07 PM Bob Aviles via vcf-midatlantic < vcf-midatlantic(a)lists.vcfed.org> wrote: > Wow! that's seem a lot? > On Friday, May 29, 2020, 12:30:23 AM EDT, Bill Degnan via > vcf-midatlantic <vcf-midatlantic(a)lists.vcfed.org> wrote: > > > https://www.ebay.com/itm/IBM-5144-Monochrome-Monitor-greenscreen/3033093690… > > not easy to find these. If you have an IBM Convertible (LCD 8086 laptop), > this was the rare external monitor that went with it. Kind of like the > Apple IIc of IBMs. > b > >

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First PS/2 style IBM display
by Bill Degnan 31 May '20

31 May '20

https://www.ebay.com/itm/IBM-5144-Monochrome-Monitor-greenscreen/3033093690… not easy to find these. If you have an IBM Convertible (LCD 8086 laptop), this was the rare external monitor that went with it. Kind of like the Apple IIc of IBMs. b

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Two old CRTs to retire ..
by John Heritage 29 May '20

29 May '20

Hey folks, I have two old CRTs I want to 'get rid of'. Before I figure out how to recycle these properly, I just wanted to see if anyone here wanted them. I can send pics, but they are: Hitachi CT1396VM - Composite input (and passthrough) output only. Has some screen burnin - not visible on brighter screens, but definitely visible on darker screens. A RCA/Thomson Consumer Electronics T09082 small color TV and VCR combo. has Composite and Audio in on the side (+ a "ear" jack), and RF on the back. No burn-in, and the last time I tested the VCR (decade ago) it worked. The outside cases are in good shape for their age .. Let me know if you want pics or want the screens.. John

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TI DS990/1 OS - Request from VCF Italia
by Jeffrey Brace 28 May '20

28 May '20

A member from VCF Italia is looking for an operating system for the Texas Instruments DS990/1 with 8" FD1000 floppy drive. Can anyone tell me where I might be able to find it for him? -- ========================================= Jeff Brace Vice President & Board Member, VCF East Showrunner Vintage Computer Federation http://www.vcfed.org/ jeffrey(a)vcfed.org

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Rediscovering Raymond Scott
by Jeffrey Jonas 26 May '20

26 May '20

Everyone knows Raymond Scott music. It's in our DNA because Carl Stalling wove it into so many cartoons. But Raymond Scott was an electronic music pioneer who worked with Moog and others on analog computers and some digital techniques. Here's a recent 3 hour retrospective about Raymond featuring his son and many key musicians: https://www.facebook.com/asmac.org/videos/3072223136194116/ Here's a free PDF book for download: https://www.raymondscott.net/artifacts/ To hear more, there's "Raymond Scott Radio" on Pandora

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RetroMagazine - New Online Vintage Computer Magazine
by Jeffrey Brace 26 May '20

26 May '20

Just heard about this new online Retro Computer Magazine. At first glance it seems that it has been written in Italian for many months and this is the first English language version. Looks pretty good: https://www.retromagazine.net/download/RetroMagazine_00_eng.pdf -- ========================================= Jeff Brace Vice President & Board Member, VCF East Showrunner Vintage Computer Federation http://www.vcfed.org/ jeffrey(a)vcfed.org <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campai…> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campai…> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

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FANUC A860-0056-T020 Powering and Industrial Papertape Reader Component Independently
by Bill Degnan 25 May '20

25 May '20

More detail to earlier post. https://www.vintagecomputer.net/FANUC/ Reader Part number A860-0056-T020 http://vintagecomputer.net/FANUC/FANUC%20A20B-0004_pwr-connect1.jpg http://vintagecomputer.net/FANUC/FANUC%20A20B-0004_250WV-AC-cap.jpg Here is the control board on the reader which has 50-pin tape in and punch out ports: http://vintagecomputer.net/FANUC/FANUC%20A20B-0004_IO-board.jpg http://vintagecomputer.net/FANUC/DOSTEK-440a-BTR.jpg The 50pin rainbow cable coming off the punch port is connected to a behind the tape reader (or "BTR"). The BTR converts the signals and sends them to a computer's serial port so they can be captured into a tape image. This is what they made when indudstrial processes converted from using actual tape readers and tapes to saved tape images. The BTR was the gateway between the reader and a computer. This FANUC 6 hardware manual, which includes this model of tape reader as part of a larger system, references the part numbers found on the reader, which is how I learned what I learned about it. http://cncmanual.com/download/1646/ I am working to safely power it up. Not in a rush to fry it.

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