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Old 04 September 2006, 19:05   #4
Secret Vampire
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Join Date: Jul 2006
Location: Birmingham UK
Age: 37
Posts: 214
It's on stripboard or perfboard, so it's probably home made, or prototype.
the lower chip is a tri-state buffer, not sure what the upper is as I can't read the markings.
I had a quick look in hard/hack, but couldn't see any likely candidates.
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