Mother 3/PSI data

This is a sub-page of Mother 3.

PSI data table
Game	MOTHER 3
Start Address	0xE1908
End Address	0xE5107
# of Entries	256 (0x100), only 100 used
Entry Length	56 bytes (0x38)
Total Length	36864 bytes (0x3800)
Back to the ROM map

Overview

The PSI data table contains parameters for each PSI move in the game. The ordering is consistent with the game's internal PSI names listing.
PSI are programmed not to have smashes.

Format

Each entry in the table uses 56 bytes.

Even though the game considers only the first two bytes of PP cost, the developers left two more bytes.
This was probably done so the table has the same structure as the Level-up stats table.

Field listing

• 00-03 (04) = [ A ] PSI number
• 04-07 (04) = [ B ] Type
• 08-0B (04) = [ C ] Usable in overworld
• 0C-0F (04) = [ D ] PP cost
• 10-37 (28) = [ E ] PSI/Item/Actions Info Chunk

Table view

       00   01   02   03   04   05   06   07   08   09   0A   0B   0C   0D   0E   0F
    +--------------------------------------------------------------------------------
00  | [        A        ] [        B        ] [        C        ] [        D        ]
10  | [                                      E                                     ->
20  | <-                                     E                                     ->
30  | <-                E                   ]

Type

The type value determines in which category it is placed:

00: Offense

01: Recover

02: Assist

Unused effect

These bytes are now unused.
They have the same value as the Effect bytes of the Info Chunk.
The only difference is that even Assist PSI have a 2 value.
In the beginning the developers probably thought about creating a different chunk of bytes for PSI and these bytes are a leftover.

Info chunk

PSI data, Item data, Battle skills table and Battle actions table all share this group of 0x28 (40) bytes.

It is called Battle Info chunk.