http://www.actionpinball.com/roms.php
Bally Pinballs 1985-1989 (6803 MPU): 19 Bally pinballs were made that used the 6803 MPU board which featured 1 or 2 language-specific ROM chips- U2 and U3. (
Eight Ball Champ through
Atlantis). Chips to change:
Sound ROMs do not need to be changed.