Märchen Adventure Cotton 100%

Debug display
This debug display exists, but no code to access it seems to remain in the game. Use the codes and  to display it during the game.

The values next to each item are hardcoded; what exactly they were supposed to represent is unknown. There are also strings for STG5 and STG6 that aren't displayed for some reason.

Break handler
This screen appears whenever the game executes a BRK instruction, and shows some basic information about where it occurred. Pressing Start exits this screen, though depending on how it was reached, this will probably crash the game.

Sound Test
At the title screen, press A, B, X, Right, Down, Left, A, Start to access a music, sound effect, and voice test screen. Press Select to toggle between the three categories, Up and Down to select a track, and Y to play it.

Level Select
At the magic selection screen, press Up, Down, Left, Right, Up, Down, Left, Right, B, A. A "1", which denotes the level to start on, will appear next to the character at the top of the screen. Press Up or Down to toggle it.