R-Type 2 - Atari ST Cheats

Cheat mode: Wait until prompted to insert disk 2. Then, press [Help], type me, then press [Up] to enable cheat mode. Press one of the following keys to activate the corresponding cheat function.
[F5] - Invincible to walls and aliens
[F6] - Invincible to alien fire
[F7] - Unlimited credits
[F8] - Change orb control