Oh, man. Anyone looking to make codes for Chasm is gonna have a fun time.
I've got pointers for HP/MP, stats, and experience that work every time when first turning on the game, but stop working if you exit to title and restart. The inventory codes are super weird. I found a working code ONCE, for one item, then follow up searches for different items, as well as the same item, yielded no results.
I'm finding that VitaCheat does not fully pause some games when opening its menu, so sometimes, when scrolling through results, values change as you move the cursor.
The experience value is weird , too. You can't max experience and have it work, as the value will go negative and continue to go negative as you gain more experience, without gaining levels. None of my searching has yielded any results that can offer a quick level up code.
The stats values are also weird. They're 8-bit values with a max of 255, but if you don't leave the code on and you level up, they roll back down to zero.
You can get around the item code issue by hexediting your save, but the game uses stacking data, so you can only modify the number of items you already have. Pasting in code to add items corrupts your save.
Fun stuff.