June 2016 - vcf-midatlantic

workshop prep
by Jeffrey Jonas 05 Jun '16

05 Jun '16

Who needed EPROMS such as 2764? I have plenty to spare, but do you have a UV eraser & programmer? Who asked for Z80 chips at a previous workshop? I have more. I'm sorting my old chips, just ask if you need anything such as 16k, 64k DIP DRAM. I NEED: 0.3" chip rails. I also need help identifying chips: Universal Pioneer UM4004, but it's a 0.6" 28 pin DIP Thanks, and see you at the workshop! -- jeffj

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A few old books
by Bob Flanders 05 Jun '16

05 Jun '16

Anyone interested? For the library maybe?

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FS: Bytek S-10 EPROM Programmer Standalone/RS232 Control
by Systems Glitch 05 Jun '16

05 Jun '16

link: http://www.ebay.com/itm/272264880145 This one arrived in a lot of surplus test equipment from Virginia Tech. It had an exploded electrolytic in the power supply -- vented electrolyte all over the inside! I cleaned it up and replaced the blown capacitor with a NOS reformed unit, and it seems to power up and be functional. Unfortunately, I can't locate a manual on it, so I can't test programming functionality -- you have to select the EPROM type with a numeric code, which I don't have. Hence the listing as "for parts." Inside, this is a little 8085 based system. Your typical array of standard and MCS-80/85 family parts. I want to say it uses a regular EPROM, so that should be easy to dump if someone is interested in reverse-engineering the EPROM definitions, or writing custom firmware for it. Very clean design. I've already got a number of programmers so I figured I'd pass this one on to someone else to hack on. Thanks, Jonathan

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FS: Leader LS-1020 20 MHz Analog Dual Trace Oscilloscope
by Systems Glitch 04 Jun '16

04 Jun '16

link: http://www.ebay.com/itm/272264264580 Simple 20 MHz analog dual trace oscilloscope. Fully tested with my Tektronix function generator. Picked it up in a lot of surplus lab gear. This would be a fine little 'scope if you need something to look at relatively slow digital signals or for general hobbyist level analog work. Thanks, Jonathan

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"bit rot" LCDs
by Jeffrey Jonas 04 Jun '16

04 Jun '16

Apropos of the pocket computer with the rotting screen: I have a parts drawer full of NOS unused LCDs. Some have gone dark and now it seems to be spreading. Does one out-gassing/leaking cause the others to rot? Some even had silicone sealant along the edges! -- jeffj

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FS: Tektronix/Sony 308 Data Analyzer (Logic Analyzer)
by Systems Glitch 04 Jun '16

04 Jun '16

link: http://www.ebay.com/itm/272264216556 Fully functional, just selling it as I've finally got my HP 1650A logic analyzer set up and checked out. I've used this little logic analyzer a number of times in both vintage computer and embedded microcontroller work. It comes with the P6451 pod, which allows both 8-bit parallel data acquisition and serial analysis. Full flying lead and grabber kit included -- you can plug the flying leads onto AP/3M "DIP clips", standard pin headers (like an IDE header), wire wrap pins, or into the grabbers. Instruction manual is included, as well as an IEC power cable and the protective front panel cover. This unit can be expanded with a word recognizer pod, which allows input from 16 possible inputs to trigger data collection. This can be used to trigger when, for example, an 8-bit CPU hits a certain address. The auction does *not* include a word recognizer pod. As with all listings, if you'd like to save on shipping by having me bring this to the next VCF workshop event I'm able to attend, that's fine! Thanks, Jonathan

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Video Footage from VCFE XI
by Douglas Crawford 04 Jun '16

04 Jun '16

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Looking for Compaq DeskPro/386 parts
by Richard Cini 04 Jun '16

04 Jun '16

All – This old Compaq DeskPro I dug-out is working great at this point, and I located a second Type 17 MPI/CDC hard drive. However, I am looking for a few random parts for it. If anyone has the following that they’re willing to part with, please contact me off-list: · Drive power cable (5-pin black on the mobo side and regular 4-pin drive on the other; gray wire). Right now I’m using a power splitter which works fine. Just looking for OEM cable. · Drive mounting slides (2). These are solid metal, maybe 3/16” thick and have holes drilled for both the drive and the cage. None of the slides I have are thick enough. · Keyboard and/or cable. The cable on mine is shot and the SPACE bar doesn’t work. I’m using a regular AT keyboard, which of course works fine. The mounting slides is the most important right now because I can’t find a way to secure the drive properly. I also located a generic ‘286 motherboard for my rusty non-booting AT. Got it cheap, so it was worth buying it for testing versus the original AT board. Hopefully between the two machines I’ll be able to get a Windows 1 demo working. Thanks! Rich -- Rich Cini http://www.classiccmp.org/cini http://www.classiccmp.org/altair32

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IMPORTANT Info - Workshop June 11/12
by Jeffrey Brace 04 Jun '16

04 Jun '16

LOCATION: InfoAge Building 9032A - (2201 Marconi Road, Wall Township, NJ) TIME: Start about 10 A.M. on Saturday and ends whenever we go to sleep. End about 5 P.M. on Sunday. (Starts around 10 A.M. Sunday morning) COST: $10 for all members attending the workshop, which VCF donates to InfoAge as thanks for providing the space for us. EQUIPMENT: VCF will provide a table and you can use any available electrical outlet. Bring your own tools, power strips, power cords and supplies etc. DRINKS: You should bring your own. I would recommend bringing a cooler of some type. Upon request there is a refrigerator available down the hall. FOOD: You provide your own. We may order pizza or go out to a dinner. Usually we make a decision when everyone gets hungry. GATE: Please close the front gate behind you. We want museum visitors to go to the front lobby and not wander through the middle of the campus. PARKING: Park behind the back ramp of 9032A (which is around the building), or in the main parking lot, NOT in the courtyard. QUESTIONS? Please ask me (Jeff Brace) or Evan. My cell is 732-759-1783 and Evan’s is 646-546-9999 in case you need to contact us. See everyone there! And have fun!

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My ebay score :)
by Evan Koblentz 04 Jun '16

04 Jun '16

It's in transit, so I guess that's good enough .... I bought a four-volume set of Army books about (ahem) automatic data processing for a grand total of ten dollars. I viewed/copied some individual pages of the first three books while doing research at the old Ft. Monmouth museum several years ago. Didn't know there was a fourth book and they're not available on Amazon or used.addall.net or anyplace else. The volumes are: Book 1 - Introduction to ADPS Book 2 - Army use of ADPS Book 3 - Fieldata equipment Book 4 - Fieldata system application I'll loan these to the museum and put them on display with our MOBIDIC/Fieldata exhibit. But first, I will scan them and make them available to Bitsavers/Archive.org.

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