Feel free to do some digging.
PRG ROM
The NES File has a header (+0x10) to tell the ROM size. You need to add that value to the PRG offset to get the right address.
0x1730 Table for noice and anitation.
Table Format: AA BB CC DD
AA=Stage BB=Block CC=Segment DD=Effect 10 Fog, 20 Animation Only, 30 Animation and Sound, 40 ??, 32-37 WaterEffect(flicker),56?? ,71 move a stage??
The most insight in the game was from Opptomon
- check his abandon project/notes
http://www.romhacking.net/abandoned/[55]COA-CV3.7z