Found codes for 99x all items.
I realize it's been a while since your request, but it might help someone else looking (I found them, and your request, while looking for them for my own play-through).
99x each item (in order of item acquisition)
* As long as it ends up in one of the slots, once you pick up one of an item, you will instantly have 99 in your inventory, even if you previously had 0. This includes key-items like the jail keys from the start of the game. It also doesn't matter if the max item limit is lower, so you'll end up with 99/30 or even 99/1 items.
I can't confirm whether this will affect game progression at any point, as I've only just started the game, but it seems to be functionally identical to the same cheat for the PS3 version used by Game Genie. Still, I take no responsibility if it does mess something up at some point (though you should hopefully be able to just use a modified version of the code to set the number in inventory lower, worst case scenario).
1st to 100th item x99
400060B8 00000063
40640008 00000000
1st to 200th item x99
400060B8 00000063
40C80008 00000000
1st to 300th item x99
400060B8 00000063
412C0008 00000000
1st to 400th item x99
400060B8 00000063
41900008 00000000
1st to 500th item x99
400060B8 00000063
41F40008 00000000
1st to XXX (arbitrary hexadecimal number) item x99
400060B8 00000063
4XXX0008 00000000
These are either/or, that is, the 1-500 code overlaps all the other ones, etc. No credit goes to me for creating these, I simply found them
You must login or register to view this content.. They were made for the Japanese version, but after testing them I've found them to work identically on the US version.