Source: Antiriad
The test mode is quite hard to access:
- Reset Game and hold down Player 2 buttons 1 and 2. If you did it fast
enough, you will see the message 'Ready?'. If not try again.
- Press Player 1 Button 2 14 times. If you did this correctly, you should
see another message '4th June. 1991'. Now you are in the test mode.
Raine Team 16/02/2002