January 2016 - vcf-midatlantic

Sleeping over @ workshop
by Evan Koblentz 28 Jan '16

28 Jan '16

We'll open the new museum room (same as where we held Festivus last month) for anyone who wants to sleep over Saturday night. It has much better heating than in the workshop room. As usual, bring your air mattresses, sleeping bags, etc. .... no shower facilities, so bring deodorant too. :)

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OT - Need 60' of ribbon cable
by Kelly Leavitt 28 Jan '16

28 Jan '16

Anyone on list have a spool of ribbon cable (IDC) with 4 or more conductors? I need 60' for a project. Thanks, Kelly

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nice score, HP terminal
by Dave McGuire 28 Jan '16

28 Jan '16

So I did a little road trip out to Cincinnati to pick up a couple dozen IBM Twinax terminals; got home last night. In the pile was a pristine HP 2645 terminal, complete with keyboard. "How'd that get in there?" the guy asked. It's mine now! B-) -Dave -- Dave McGuire, AK4HZ New Kensington, PA

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OT: Anyone familiar with HeathKit Model HM1-122-A Series No. 53338?
by Dean Notarnicola 28 Jan '16

28 Jan '16

Getting this as a bonus item via another purchase. Can't find any info on it.

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Museum move - getting closer...
by Evan Koblentz 28 Jan '16

28 Jan '16

Everyone, Here's an update on the status of moving our museum. - We signed the new lease a couple of weeks ago. We will pay a (symbolic) $1/year for five years, and then we have five one-year renewals at the same price. - InfoAge received an estimate for turning one of the new room's single doors into a double door. A second estimate is forthcoming. Having a double door will allow us to more easily bring in larger stuff including the pallet-ized UNIVAC. - Fred and I are meeting soon to sort out the keys. - IA leadership includes someone who is an architecture and art professor. We've been asked to show him our layout plan for feedback and hopefully will do so this weekend. - We purchased a small amount of a new kind of shelving. We're going to assemble a single unit this weekend (will only take 15 minutes). If it works as expected, then we'll make the large purchase based on our recent fundraiser. - Depending on how busy we all are at the workshop this weekend, I may ask for two or three helpers to start taking apart our old museum. For example we can start by boxing up all the books and putting them into the warehouse. (We recently purchased a bunch of file boxes.) - We are delaying the addition of more electrical circuits into the new room until we see the final costs of the door, furniture, etc.

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FS: OSI 525 Dual Port Static RAM Board
by Systems Glitch 28 Jan '16

28 Jan '16

link: http://www.ebay.com/itm/272118422825 I received this board with another Ohio Scientific board. There are zero components populated, not even the Molex connectors. Sockets are present for the 2114 static RAMs and some of the board logic. Super clean board otherwise. I'm not sure what else it's used for, but the 525 board was used in Ohio Scientific's 14" hard drive subsystem -- I know as I've got one. It can of course be used as standard system RAM, and it's probably cheaper to find a bunch of 2114 static RAMs than a bunch of working SEMI4200s for a OSI 520 board. This one's up as an auction as I have no real idea what it's worth. I don't need it for any of my OSI stuff, but I figured someone else can use it, and with the scarcity of OSI boards, I shouldn't hold on to it. Thanks, Jonathan

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OT: Anyone have LexisNexis access?
by Evan Koblentz 28 Jan '16

28 Jan '16

I need to get an article that I wrote in 2012. It's fairly urgent. Contact me privately. Thanks

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Trenton - Sat., 3/19
by Evan Koblentz 28 Jan '16

28 Jan '16

Everyone, We will have a small presence at Trenton this year. (Last year's big presence was an exception for their 40th anniversary, as was our large display two years ago when we didn't have a VCF East that year.) This year, we'll just have one table, one to-be-determined computer on display, and a bunch of fliers. Nice and simple... I am giving a talk on "The present and future of computer history". Abstract - The field of computer history has seen many exciting changes in the past few years. Collectible prices are rising, new people are bring new ideas into our field, and a non-profit organization is emerging to help with structuring things. Come learn and go back to the future with us! Delorean not required. I'll need one helper that day (to hold down our fort while I'm lecturing and so I can make a round of the other club tables and stuff.)

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OT: Test
by tom.hornberger＠verizon.net 28 Jan '16

28 Jan '16

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FS: MITS 88-PMC 1702A EPROM Board
by Systems Glitch 27 Jan '16

27 Jan '16

link: http://www.ebay.com/itm/272117827487 Tested, working, very clean except for a lifted topside /QB pad between ICs P and T, which doesn't affect operation since the trace connects on the bottom side. I don't know why the original builder chose such a large ceramic capacitor below the -8V regulator...let me know if you'd like it replaced. This is a REV 1 board with solder mask and a DIP switch for address selection, as opposed to the wire jumper address selection on REV 0 boards. I tested this one with several EPROMs on my IMSAI 8080. It generates wait states properly. It is currently addressed for 0xF800 - 0xFFFF. Thanks, Jonathan

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