Advice Wanted

You can go in the ''Resources and links'' section and download the different disassemblies (source code) of the game. There are comments in the code which makes it easier to navigate.

• Bank C0 deals with event commands among other core elements.
  
• Bank C1 is graphic oriented and deals with the combat window (from what I know).
  
• Bank C2 deals mainly with the combat system (there you will find your damage calculation).
  
• Bank C3 deals with the field menu and some mysterious ending game routines.
  
• Bank C5 deals with the music.
  

There are other disassemblies such as bank 7E, D4 and EE.

If you want a good resource for opcodes (65816 instructions) here is a good link: http://www14.brinkster.com/assassin17/thegun.htm
Here is also a nice list with the hex values of the opcodes: http://www.defence-force.org/computing/o.../annexe_2/

You can also find online small tutorials about SNES assembly (65816) and even books (one is linked in Resources and Links section). Check also romhacking.net for documentation.