This is a patch that instantly gives you the item in the item box. I am crediting imamelia for the patch, as I found it in his ASM tutorial. If you use it in your hack, please credit imamelia, not me.
This contains a small, important bugfix:
If you die and use the reserve item you will be "revived" and the game goes on as if you didn't die.
Also fixed the star not dropping.