RE: Unknown holes in the motherboard of the CBM610

From: Baltissen, GJPAA (Ruud) <ruud.baltissen_at_apg.nl>
Date: Thu, 26 Apr 2018 12:20:06 +0000
Message-ID: <54F350D2C6501448A3EE14B7854C5FB575272023@WSV10441N3.office01.internalcorp.net>
Hallo Steve,


> There is also a 1024K memory board by Anderson Communications Engineering:
> http://www.6502.org/users/sjgray/computer/cbm2/pic-ace-b1024.jpg


Thank you for this info!

The JPG looks as if the board uses female headers at the under site of the board for both big expansion connectors (*) and the small one at the other side. IIRC the position of the smaller connector in the 610 is different from the one in the 720 and that would explain the connector in the left of the JPG. You can see clearly the lines that connect it with its female counterpart. So for one of the computers you'll need a flatcable. Could you tell me in which system the board would fit w/o using the flatcable, please?

Anyway, both your cards are enough reasons for me to keep the connectors and holes fixed to each other. But I will design them as a separate package so I still have some flexibility in placing the whole on the motherboard. Another idea: why using two different layouts, why not using the one for the 720 for both the 720 and 610 (or the other way around)? Comment is welcome!

(*): why two? Why isn't one enough? Both connectors are the same AFAIK. Or is here another difference in layout between the 610 and 720? I'll definitely have to check this this evening.


Met vriendelijke groet / With kind regards, Ruud Baltissen

www.Baltissen.org<http://www.baltissen.org/>




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Received on 2018-04-26 15:00:03

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