Persona 4 Golden/data.cpk/battle/SKILL.TBL

 is a file in Persona 3 and Persona 4 that defines the behaviour of most skills. It uses little-endian formatting.

The file contains two tables: the first containing the skill's element, and the second containing the behaviour of non-passive skills. Each of these tables are padded with a variable amount of 00 bytes afterwards to ensure each table has a 16-byte alignment.

SKILL.TBL.0 Rows
Each row is 2 bytes.

SKILL.TBL.1 Rows
Each row is 44 bytes.

All chances are given by a byte, and are divided by 0x64 to get the percent. For "always 0" fields, it likely means the preceding uint8 is a uint16 that never reaches values greater than 255, although testing is needed to confirm this.

Buff/Debuff Bit Flags
Tarukaja, tarunda, sukukaja, sukunda, etc. all have two flags set, shown in this table as the 1 and 2 pairs.

Each flag might be only for a specific value (i.e. Attack up 1 = Physical attack up, Attack up 2 = Magic attack up), but this needs confirmation.

Special Effect IDs
These are usually unique to just one boss skill.