[Ronja] Twister not workling

[toco]

Me and my friend have built 2 Ronja but the twisters aren't working.
The Twister was built with the circuit layout from the 28th August  
2004 on a dot matrix board.
All connections have been tested three times. The ICs got current.
Is it possible that there is an bug in the layout?
The Twister isn't working.
IC U66 and U67 got +9V DC on Port 0
The quarz is oscillating correctly.
The test-routine doesn't recognize the connected twister.
Does anybody know important voltages of the ICs.
We got an Oscilloscope.
Which IC generates and sends the link status to the computer?
Which Singals shoult be at whitch port at the ICs, espacially IC U58  
and U62.

I hope you can help me,
toco
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