Are they the valid addresses? When I change 0040 the game crashes, and 0041 and 0042 do nothing to the score.
Edit: More messing with 0040 gave me this...
http://imgur.com/iWIj0RSprobably a secret stage or sumthing...
char select music plays here. Messing with the address lets me play as two Kinopios 2P mode in the current screen I am in.
Another edit:
0040:00 - game restart
0040:01 - double Kinopio/Toad mode
0040:02 - switches to the Option menu CHR bank but doesn't work
0040:03 - switches to the Top 8 PRG on the current bank
0040:04 - crashes the video and gameplay on the "Text Kingdom" but the music plays normally
0040:05 - crashes the game on Nokonoko bank
I didn't check further addresses because I'm lazy.
Another another edit:
Can someone find the scoreboard addresses in the ROM? I want to change the scores to make them more fair and easier to get.