- vcf-midatlantic - lists.vcfed.org

Museum report
by Evan Koblentz 01 Jul '19

01 Jul '19

InfoAge had about 15 visitors today; half of them made it to VCF-land. One guy introduced himself as Jason Howe's cousin. So that was exciting. :) Bill I. came by to visit us.

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Looking for schematic for Tandy HD
by Richard Cini 30 Jun '19

30 Jun '19

All – I just obtained a 25-1025 10MB external hard drive unit for my Tandy 2000. There is a relay inside that powers the unit on when accessed from the controller. Unfortunately, one of the relay coil leads has come undone (the trigger, not the ground) and I don’t know where it goes. Does anyone have a schematic of the power supply or a copy of the service manual, or a link, so I can fix it? Thanks! Rich -- Rich Cini http://www.classiccmp.org/cini http://www.classiccmp.org/altair32

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Pet Help
by David Hoelzer 28 Jun '19

28 Jun '19

Hey- My life is still in turmoil, but I decided to have a go at my PET before moving it on to a new home (yes, some of you know who I'm looking at). At this point, it is semi-conscious again... but... I appear to have a strong clock, phi1, phi2, and there appears to be data appearing on the data lines of the 6502 (see the logic analyzer output). The display, however, is not happy looking. Additionally, while the display in the photo looks awesome (compared to complete darkness), it will randomly flicker to darkness or perhaps even go dark for long periods. Nothing is particularly hot on the board, I just burned a complete set of EPROMs (and verified them), and I've been over the board three times looking for solder joints, etc. When the screen goes dark, the tube is still glowing, so I'm guessing that it's a video circuitry problem, but I'm stumped as how to tell if it's on the board or on the CRT board. (This is a 2001-N 32k..) Any suggestions? I know we have some PET pros around here. Photos attached. If they don't go to the list (I don't remember of they do) ping me and I'll send them direct. -- ---- David Hoelzer Chief of Operations Enclave Forensics, Inc.

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OT: Bob Applegate is not well
by Neil Cherry 28 Jun '19

28 Jun '19

His web site is down again but I did manage to catch a glimpse (cached) of this: Posted in Uncategorized Posted on May 29, 2019 by Bob Long term suspension of business Over the last few weeks I have been feeling weaker and eventually starting losing my breath while taking short walks. My doctor sent me to the emergency room where I was diagnosed with Leukemia. The treatment will require another 6 to 8 weeks in the hospital, so there is no way I can fill orders. I have email, but won’t be checking very often. It is unlikely any development work will take place, although my wife and kids have offered to bring things in for me to work on. Any orders placed will be cancelled until further notice and monies refunded. Bob -- Linux Home Automation Neil Cherry ncherry(a)linuxha.com http://www.linuxha.com/ Main site http://linuxha.blogspot.com/ My HA Blog Author of: Linux Smart Homes For Dummies

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Big news!!! (from me, not VCFed)
by Evan Koblentz 28 Jun '19

28 Jun '19

Hello! I have a major announcement. :) It's time for version 2.0 of my book, "Abacus to smartphone: The evolution of mobile and portable computers," which I published on dead trees four years ago. This time, it's going to be a (free!) interactive website: the era of printed books is behind us. Please help me raise funds to make this happen. Funders will get exclusive access for the first month that the website is live (approximately the whole of August 2019). All of the details (such what's new/different) are here: https://fundrazr.com/b1WZ91?ref=ab_74VRia ... please check it out. Thanks!! -Evan

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Princeton data center visit
by Evan Koblentz 28 Jun '19

28 Jun '19

Only two or three people expressed interest in seeing the Princeton U. data center, and I had a different reason to be on their campus today, so I asked for a last-minute tour and my contact their obliged. They have multiple data centers. Most of them are production IT. The one they showed me has some IT but mostly it's science: https://facilities.princeton.edu/projects/high-performance-computing-resear… I was blown away by how clean it is inside! :) It's almost mostly lights-out -- I only saw two employees during the 60-minute tour, and the lights went on/off automatically as we traversed the hallways. Pictures (personal use only): http://tinyurl.com/y2n2g4se The files called electric.jpg, standby.jpg, pipes.jpg, and overview.jpg are self-explanatory. Financial.jpg is a cage with special security for one rack that's used with credit card transactions. Super_hp.jpg is "TIGER" -- their HPE-designed supercomputer. IBM_9.jpg is their newest machine under construction. I spotted some interesting older equipment (can't say what yet) which might fit into VCF-land :), so hopefully we can make that happen. -- Evan Koblentz, executive director Vintage Computer Federation www.vcfed.org evan(a)vcfed.org (646) 546-9999 VCF is a 501(c)(3) non-profit organization

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Commodore 1541 Diagnostic Cartridge
by Jeffrey Brace 27 Jun '19

27 Jun '19

At the last workshop I had a 1541 diagnostic cartridge which a few members used. I originally heard about this from Chris Fala. If anyone wants to buy it, the this website sells it: < https://www.protovision.games/shop/product_info.php?products_id=193&languag… > -- ========================================= Jeff Brace Vice President Vintage Computer Federation

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Museum report
by Evan Koblentz 27 Jun '19

27 Jun '19

Only a few visitors today, but they were good ones, including two engineers -- one ex-HP, one ex-Bell Labs. Our museum internet access is via a hotspot (Mobile Citizen, which is $10/month exclusively for non-profits). We recently ordered a newer version of the hotspot, which arrives next Monday. But they made a mistake and deactivated our old one yesterday .... GRRRR ... so we didn't have any internet access today nor will we have it this weekend. There's a change they will reactivate the old one in the next day or two. I am skeptical but I have no way of knowing if it works until I get there and try it Saturday. I spent some time working on version 2 of our touchscreen information kiosk. This time the work is focusing on better layout/writing for the kiosk content. In version 1 I focused on getting all the right tech bits, tying up loose ends with the CSS, getting the web server running, and making sure the whole setup is rock-solid reliable.

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C64 remake?
by W2HX 27 Jun '19

27 Jun '19

? Came across this, thought it might interest some. https://youtu.be/4yOch48SScs Commodore 64

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Museum report
by Evan Koblentz 22 Jun '19

22 Jun '19

Very busy today, lots of visitors. I had three projects to work on but didn't have time for any of them -- a nice problem to have.

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