Items

He's moved a lot of things around in his hack, so a disassembly would be highly misleading. If anybody could reverse the process, that would help, but we're still going to need locations for hooking in the US versions.

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I've confirmed two things via some minor reverse engineering:

1) the item menu itself has been expanded by 64 slots, and the arrow hasn't been recoded to take that into account. Likely needs fixed, but it's just an aesthetic issue.
2) the actual item index has been expanded by having the game read the item quantity's highest bit. An item quantity of $80 changes the actual item, and sets its quantity to 0.

The new item-related RAM ranges are follows:
Stored item check: 7EECA0-7EEDB3 (this is because the expanded portion of the menu cuts off at $40. It goes slightly further in RAM but won't display if you insert anything.)
Item quantity check: 7EEDD0-7EEE3 (same issue. It goes further, but he seems to have cut it off at $40.)