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Thread: Unpopulated S100 stuff at Anchor Electronics

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    Default Unpopulated S100 stuff at Anchor Electronics

    I don't know if anyone has already posted on this, but Anchor Electronics has some unpopulated NOS S100 boards for sale.

    (Not affiliated with Anchor; just noticed them in one of my parts searches)

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    Quote Originally Posted by Chuck(G) View Post
    I don't know if anyone has already posted on this, but Anchor Electronics has some unpopulated NOS S100 boards for sale.

    (Not affiliated with Anchor; just noticed them in one of my parts searches)
    they've had these kicking around the store forever
    I think there was some connection between SSM and Anchor in the past

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    They used to have a history page at their website:
    https://web.archive.org/web/20110517.../about_us.html

    It is a biography of John Robert Burgoon:

    In the early '70s John resigned from his position at Lockheed and moved his fledgling electronic parts company from his garage to a nearby warehouse. At about this time home computers were just coming on the scene and John recognized an opportunity. With technical help from others, John started another company to build computer boards. The parts company he called, “Anchor Electronics” and the board company was “Solid State Music”, or “SSM”.
    ...
    John’s companies occupied several buildings and he had about 35 employees. The stress of it all proved too much and in late 1977 John suffered a massive heart attack. He ended up selling all his businesses, except for the parts company that was so dear to him – Anchor Electronics.

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    I think I still have a S100 SSM 8K SRAM board kicking around--lots of 91L02s.

    There's a very odd SSM PC blank that's being offered. Anyone know what it's supposed to be part of?

    Anchor has always been a good source of vintage parts. I found what I was looking for there (0.156 24-position edge connector) for a very reasonable price.

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    Quote Originally Posted by Chuck(G) View Post
    I think I still have a S100 SSM 8K SRAM board kicking around--lots of 91L02s.

    There's a very odd SSM PC blank that's being offered. Anyone know what it's supposed to be part of?

    Anchor has always been a good source of vintage parts. I found what I was looking for there (0.156 24-position edge connector) for a very reasonable price.
    it's a SSM IO-3
    probably an 8255 and two 8251s

    and yup, they're good folks, same with Bob at Halted and Mike at Excess Solutions

    the folks behind the counter at Anchor say store business has been slow.

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    Well, times change, don't they?

    That IO-3 "mystery board" isn't S-100, nor Intellec. 80 pins on 0.125 spacing. What was it for?

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    Quote Originally Posted by Chuck(G) View Post
    Well, times change, don't they?

    That IO-3 "mystery board" isn't S-100, nor Intellec. 80 pins on 0.125 spacing. What was it for?
    good question. the 28 pin chips appear to interface 16 pin rams

    just dug around in Byte from 76 and 77 and IO-3 never appears, just IO-1 and 2

    it's not an Intellec-4, that was 100 pins or Digital Group
    Last edited by Al Kossow; August 3rd, 2017 at 11:09 AM.

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    Quote Originally Posted by Chuck(G) View Post

    That IO-3 "mystery board" isn't S-100, nor Intellec. 80 pins on 0.125 spacing. What was it for?
    Could it be for a Digital Group machine? Looks a lot like the cards here...

    http://www.bytecollector.com/dg_cards.htm


    Edit -- Guess not. DG memory cards are 72pin --
    Last edited by Moonferret; August 3rd, 2017 at 02:06 PM.

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    I count 72 pins on the Digital Group boards, not 80. But maybe my eyes are fooling me.

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    The Digital Group I/O boards use a 72-pin, 0.156" spacing connector unbussed for each I/O board's connection to the outside world and a 44-pin, 0.156" spacing connector for the CPU bus, the CPU board uses a 100-pin, 0.156" spacing connector (same as S-100, but it's *not* S-100 electrically), the memory boards used the same 72-pin, 0.156" spacing connector as the I/O board's I/O connector, but centered instead of offset.

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