Famicom Meijin Sen

Disabled Debug Routines
All three Famicom games (the other two beingSatomi Hakkenden and Sted: Iseki Wakusei no Yabou) developed by Alpha Denshi contain the same debug routines to test game internals or engines. This particular game contains all of them at the same time.

Scrolling Engine Test
All revisions of this game contain scrolling engine test routines. Since this is just leftovers from software library, there are no actual background data or CHR bank setups, but the engine itself is working. Use the Game Genie code then reset the console. Now you can scroll background garbage in any direction by pressing the D-Pad buttons on the first controller, and with the A or B buttons you can play the test sounds. On the second controller press the A button to print the string "TEST0123456789TEST" to the background. There are two sprites at the center of the screen too; using the D-Pad of the second controller, you can move one of them around the other one.

CHR Data Viewer
Only the REV0 version contains this mode. Use the Game Genie code then reset the console. Now you can see the game's graphics, and select any palette or edit any of the existing palettes with the D-Pad buttons and the A button on the first controller. Since these are just leftovers, changing some of the values causes the program crash.

Memory Editor/Viewer
Only the REV0 version contains this mode. Use the Game Genie code then reset the console. Now you can browse CPU memory as well as modify any data in it.