Oh by the way i have found an interesting site now:
techdocs.exodusemulator.com
I have to see now which boardset my friends Heavyweight Champ actually uses...
Greetings Markus (from Bottmingen, Switzerland)
Sega System 16
Archive of technical documentation, tools, and software for vintage Sega arcade systems and consoles, to assist in research, development, and emulation.
Greetings Markus (from Bottmingen, Switzerland)