Shiren 1 SFC:Debug Mode

Debug mode is an unused mode in Mystery Dungeon 2: Shiren the Wanderer originally used by developers to test things in-game.

Accessing

Changing the bytes at 8000 and 8001 in a headerless ROM (or 8200 and 8201 in a headered ROM) from FF to 00 enables a slew of debugging functions (alternately, enter Pro Action Replay (PAR) codes C0800000, C0800100):

Functions

Controller 1 Functions

• Start: Skip to the next floor.
• B+Start: Reveal locations of all monsters on the current floor.
• Y+Start: Reveal locations of all tools on the current floor.
• B+Y+Start: Kill all monsters on the current floor.
• R+Start: Display full map of the current floor.
• B+R+Start: Opens a screen allowing the selection of any tool in the game.
• Y+R+Start: Turns off the background music. The only way to turn it back on is to reset.
• B+Y+R+Start: Opens a sound test.
• Controller 2 Functions
• Start: Allows for the entire current floor to be viewed using the D-Pad on controller 2. The coordinates of the portion currently on-screen are also displayed. The screen moves in 32 pixel increments.
• X: Displays Shiren's coordinates.
• Y: Opens an enemy test.

While in debug mode, if the player heads south of Canyon Hamlet, a debug room can be accessed. There are many transparent stairs that can go to each dungeon in the game. Going down the stairs in the dungeon leads you back to the debug floor. Pekeji's theme is used as the background music.