- vcf-midatlantic - lists.vcfed.org

VCF museum re-opening August 1
by Jeffrey Brace 20 Jul '20

20 Jul '20

InfoAge and all their museums including the Vintage Computer Federation Museum will be opening August 1 for regular museum hours and days: Saturday, Sunday, Wednesday from 1PM to 5PM. Keep in mind that you must go through the front desk if you are visiting any of the museums because they will take your temperature, make sure that you are wearing a mask and take down your contact information (for contact tracing purposes). Everyone must wear a mask and each museum has Covid-19 procedures in place for managing the flow of people, wearing masks, hand sanitizer, social distancing, etc. The docents and steering committee are preparing the museum for reopening over the next two weeks. -- ========================================= Jeff Brace Vice President & Board Member, VCF East Showrunner Vintage Computer Federation http://www.vcfed.org/ jeffrey(a)vcfed.org cell: 732-759-1783

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today's surplus finds
by Jeffrey Jonas 20 Jul '20

20 Jul '20

I think the prices are good for authentic parts: https://www.bgmicro.com/9Z1509.aspx limit 10 per order Your Price: $7.99 Quantity in Stock 275 BG Part Number: 9Z1509 RCA COSMAC CDP1802ACE Low power CMOS Microprocessor Introduced by RCA back in 1976 and yet it still continues to have a very loyal following. Used in spacecrafts and in many space science programs. https://www.bgmicro.com/1B1661.aspx Your Price: $1.19 BG Part Number: 1B1661 National Semiconductor MM5486N LED Display Driver. TTL compatible. For individual LEDs, 7 segment displays, or even for relays. 40 Pin Dip. Serial I/O. Very useful and were very popular back in the mid 80's. 33 outputs that will sink 15 ma. Versatile and easy to use. Optimized for common anode. With a brightness control. [it is essentially a 33 bit shift register with current-adjustable outputs via one pin to a resistor. It cascades too!] cheers! Jeff Jonas

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Mac G4 Quicksilver -- free to a good home (NJ)
by William Dudley 20 Jul '20

20 Jul '20

I have too many computers. This is a Mac G4 "Quicksilver". I've replaced the (dead) power supply with a non-Apple supply (with wiring mods to make it work). It has Ubuntu 16.04 installed on it, because I was using the computer in my guest room, and guests should have a modern browser. The case is in good to excellent cosmetic condition. I'll wipe my account off the machine and give you the root password, and then you can either use it as is, or install MacOS 9 on it (or whatever). It has a 40GB disk and 640MB of RAM. Here are the detailed specs about OS and CPU: VERSION="16.04.6 LTS (Xenial Xerus)" bogomips : 49.81 clock : 500.000000MHz cpu : 7400, altivec supported detected as : 65 (PowerMac G4 AGP Graphics) L2 cache : 1024K unified machine : PowerMac3,3 Memory : 640 MB motherboard : PowerMac3,3 MacRISC Power Macintosh platform : PowerMac pmac flags : 00000014 pmac-generation : NewWorld processor : 0 processor : 1 revision : 2.9 (pvr 000c 0209) total bogomips : 99.63 I don't particularly want to ship this as it's big and heavy. I live in the middle of NJ. I can deliver it to the Museum for a tech day, or meet you somewhere in Monmouth or Ocean county to effect the transfer. This email is free of malware because I run Linux.

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Next Repair Workshop 8/15 & 8/16, 2020
by Jeffrey Brace 19 Jul '20

19 Jul '20

The next repair workshop is: August 15 & 16, 2020. Sign up here: https://docs.google.com/spreadsheets/d/1L3Jc_RIHiBG08kZOOAgzvqjf8G0ox9ZRa6B… -- ========================================= Jeff Brace Vice President & Board Member, VCF East Showrunner Vintage Computer Federation http://www.vcfed.org/ jeffrey(a)vcfed.org

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Looking for CompuPro CPU-Z
by Richard Cini 18 Jul '20

18 Jul '20

All – Yet another project afoot…trying to get my 8” SA-851 drives working with my IMSAI. My configuration is highly customized using 5.25” drives in place of 8” (and part of two VCF presentations). As a test, I wanted to throw together a small CompuPro system to see if I can get disk images from the Maslin archive working. The only board I don’t have is the CPU-Z board. I have an Interfacer 1, plenty of RAM boards, and the Disk 1 controller. Does anyone have a spare working CPU-Z board that they could part with? Even if I could just use it for testing, that’d be great, but I could do a trade also. I have a ton of spare boards and a few other interesting things. Please contact me off-list. Thanks! Rich -- Rich Cini http://www.classiccmp.org/cini http://www.classiccmp.org/altair32

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PDF of Microcomputer Systems Principles Featuring the 6502/KIM
by Jeffrey Brace 15 Jul '20

15 Jul '20

Bill Mensch mentioned this book in a video chat I had with him preparing for his VCF West 2020 Virtual presentation. It seems that a book that I'm looking for is hard to find and there is no PDF available. The book is: Microcomputer Systems Principles Featuring the 6502/KIM by Camp, Smay and Triska This is the Google Listing: https://books.google.com/books/about/Microcomputer_Systems_Principles_Featu… This is the World Cat listing: https://www.worldcat.org/title/microcomputer-systems-principles-featuring-t… If anyone knows of a PDF version, then please let me know. If you *have* the book, then consider scanning it for the general public's use. Thanks! -- ========================================= Jeff Brace Vice President & Board Member, VCF East Showrunner Vintage Computer Federation http://www.vcfed.org/ jeffrey(a)vcfed.org

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the Lego NES, so retro it's ... retro!
by Jeffrey Jonas 15 Jul '20

15 Jul '20

It's a clever moving background screen, but the price :-0 https://www.lego.com/en-us/product/nintendo-entertainment-system-71374 Nintendo Entertainment System $229.99 Coming Soon on August 1, 2020

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OT: Hard Drive Data recovery using DDRescue
by Jeffrey Brace 15 Jul '20

15 Jul '20

So I knew that DD Rescue on Linux was good at data recovery, but it has been a long time since I have used it so I'm just a beginner. Ian has used it a lot and knows lots of tricks to maximizing data recovery from hard drives. I have a hard drive that was with my desktop since 2011, so it has seen a lot of use. It is in the process of failing. Ian used the command like this: ddrescue -v -v -d /dev/sde3 salvage.img salvage.log He can explain a little better about what it is doing with these switches, but this way you can stop the process and pick up where you left off and it will continue. It uses the log file to keep track of things. So I ran the process which took about 36 hours or so. In the end I recovered 99.99% of my data with 40MB lost. Pretty amazing! It recovered almost all of the 1.4 Terabytes of data with about 40MB of sectors with errors. Pretty amazing! To recover a little about another 3MB of data, I had to unplug and restart the drive because it seemed to lock up. Then I ran another command to work from the end of the disk going backwards and to try 5 times to recover as much data as possible that had errors in the sectors. This was the command used: ddrescue -v -v -d -r5 -R /dev/sde3 salvage.img salvage.log On the windows 10 side I used OSFMount to mount the image and then copy to another hard drive. Thanks to Ian for helping me with the commands and to Jonthan Sturges for lending the cable to connect to my computer. I would have lost it all without your help. It's truly amazing! Other commands used were: mkdir /mnt/test mount -o loop,ro salvage.img /mnt/test Maybe Ian can fill in more details about the process. -- ========================================= Jeff Brace Vice President & Board Member, VCF East Showrunner Vintage Computer Federation http://www.vcfed.org/ jeffrey(a)vcfed.org

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Lear Siegler ADM-2
by jackson22 13 Jul '20

13 Jul '20

Hi everyone, I’m currently looking for a Lear Siegler ADM-2 terminal to purchase from someone for use in a future short film I’m creating. Afterwards I’d house it in my personal museum. If anyone has one or you know someone who owns one and could be interested in selling, let me know. I’d pay very well. I could also do a trade, I have quite a few rare terminals in my own collection. I’m familiar with old computers and know how to work around them, it could be in any condition. It would be in good hands. You can also Email me at jacksonharrington22(a)gmail.com Thanks.

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Repair Workshop tomorrow
by Jeffrey Brace 12 Jul '20

12 Jul '20

We continue at 10AM. If you put down for breakfast bagels list from Bill Inderrieden, then you are good, if not, then you are too late. I will bring Box of Joe and Dunkin Donuts. -- ========================================= Jeff Brace Vice President & Board Member, VCF East Showrunner Vintage Computer Federation http://www.vcfed.org/ jeffrey(a)vcfed.org

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