On 18/01/2012 03:13, Mark Jenison wrote:
> When I was over at Rick Schieve's one day, I found a few of these in his
> barn that he had been cutting up to make Jamma harness finger boards:
>
> https://plus.google.com/photos/113324346917953965256/albums/5698800677317070049
>
>
> 86 pin extender cards that fit in G80 cages. They are labeled "OCTO CARD
> EXTENDER". I hope to get some use out of them as I've got a stack of
> about 40 CPU boards to repair.
The octo card extenders you mention are actually from Atari 'Indy' pcbs,
sets like indy 800, indy 4 etc... shame to cut them up! but remember
there are some joined pads on the finger edge that aren't on the g80
set. they are one card from a set of three needed to service Indy pcbs :
http://www.andysarcade.net/pix/AA01709.JPG (2 sets shown)
I actually found a real g80 extender card in Tulsa, OK (with the indy
extenders above) at an operators place a few years back...
http://www.andysarcade.net/pix/AA01707.JPG
Notice the switch mounted in the upper right. The pcb has a ground plane
running through the pcb, and you see they've etched ground traces
alongside each of the pad->pad traces, presumably to counter noise?
-- Andrew Welburn http://www.andys-arcade.com --------------------------------------------------------------------------- ** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org ** Please direct other questions, comments, or problems to chris@westnet.comReceived on Wed Jan 18 06:42:06 2012
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