If you own an Action Replay then that code came on it. Here it is anyway.

Code by: Codejunkies
Title: Press Y To Moon Jump

Code:
923fffa8 00002400
020dafcc 00000398
d2000000 00000000
For future reference visit this link http://www.datelcustomerservice.com/...lists/ARDS.xml to get codes that already exist from Datel (the basic codes i.e. the one you asked for) Press ctrl F to quickfind and type keywords (i.e. Metroid) with the "Match case" box checked to quickly go to the codes for the game you wish. For future posts: please don't bother to become a member if you're going to post noob questions like this.