No free-play DIP setting on these games
The DIP switches have no free-play option. The nearest setting is a first replay at 10,000 points. A modified U6 EPROM (with the MPU jumpered for 2732 EPROMs) adds free play on DIP switches 17 and 18.
Systems
Source: Repairing Bally Electronic Pinball Games from 1977 to 1985, Part One, Clay Harrell (pinrepair.com)