Kyuukyoku Harikiri Koushien

Debug menu
On the main menu, select ほうかごMODE (the last option). In the next menu, move the cursor to こうこうTEAM ON (the last option again) and press Select. You'll arrive at a new screen.

While the credits scroll by at the bottom, you have a variety of options at your disposal. You can scroll through the various pictures in the game using B and change the palette using Select. The topmost option is a pretty self-explanatory sound test, select your track and press A to play. The second option, if set to 1, allows you to watch the baseball stadium by pressing A. You can use the directional pad to maneuver around the entire stadium. When you're done fooling around, press B to return. The third option allows you to select a number of cursors. To get out of here, simply press Start.

CRC test
Game Genie code enables a CRC test routine. Hold Up on the second controller and reset the game. The game will check the PRG ROM, the character table and the SRAM for integrity.