Well I'd need to test the game before I can answer your question fully. seeing as i've already completed it, I can just load my save @ the end of the game to figure it out for you. It could be one of those weird games where the values only corresponds with a value, i.e 1-9, and don't use letters for values, so 255 would = 0255.
To get it higher, you'd need to add another code similar to that one, like
000DBA03
000DBBE7
Note the last two values for both codes will be used in conjunction with one another, so it'd read as 03E7, which is in turn 999.
But let me go and test the game before I can make my final analysis.
EditSuper Mario RPG
Inf HP Mario
00FA91E7
00FA9203
Max HP Mario
00FA93E7
00FA9403
As you can see, using two codes for one will make it function as a 16-bit code.
Seems I was quick enough to search, and edit my post
