Thanks for the info about those Zaccs, especially from the Scorpion

These boards are not mine, a friend of mine bought a huge collection of old pcbs from a former operator and he gave me some for testing.
There are more interesting and unknown Zacc pcbs among them

I will document everything and publish it soon.
I think he won't keep all of these, he is rather a pinball guy, so I hope we will be the Raiders of the lost Zaccaria pcbs.

By the way, can you help solve the mystery what is + and - "Ponte" in the manual of Dribbling?
I try to make an adapter to test these, Paul informed me, that the +15V probably wont need, so I have a good chance to make at least one working.
Scheme here:
http://klov.net/manuals-videogames/D/Dribbling.pdf