Sony Playstation Games Solutions - One of
the Largest Games Source for PSone Cheats, PSX Codes, Hints, Tips,
Walkthroughs, FAQs and Games Strategy Guides.
Display R-Type Delta codes - At the main menu of Disc 1, hold L1 + L2 +
R1 + R2 and press Triangle, Circle, or Square.
Toggle background music - At the main menu of Disc 1, press Start, then
Left or Right to toggle the background music on/off. Press X to return to
the main menu.