SPC topic

I think for FFVI instruments used in songs are stored in BBR samples because you can replace them in FF3usME. As of the sound effects that you produce by using the event command F4, I think they come from the SPC core waveform generator: Here are some offsets I found in a detailed ROM map:

Code:

053E5F    053F1B    PTR    No    Pointers to BRRs (63 addresses)    
054C35    085E79    BRR    No    BRR samples

That covers the BBRs. There are 63 adresses for 63 instruments (3F).

Now the next offsets covers sound effects pointers, and sound effects type 1. From what I understand, ithey are transferred to the SPC cor like JCE was telling. I never saw a detailed list of all the sound effects (not instruments) for FFVI with their offsets but we would need that I guess if we want to change some. Plus for the sound effects there is the sample data and the instruction, which maybe is the way the sample is modulated. I'm not too sure however...

Code:

0520C7    0520C8    Length of Sound Effect Sample Data    

0520C9    052215    Sound Effect Sample Data (Copied to SPC locations $4800-$494C)    

052216    052217    Length of Pointer Table to Sound Effect Sample Data    

052218    052237    Pointer Table to Sound Effect Sample Data (Copied to SPC locations $1B00-$1B1F)    

052238    052239    Length of ADSR Data for Sound Effect Samples    

05223A    052249    ADSR Data for Sound Effect Samples (Copied to SPC locations $1A80-$1A8F)    

05224A    05224B    Length of Wave Rate Multiplying Values for Sound Effect Samples    

05224C    05225B    Wave Rate Multiplying Values for Sound Effect Samples (Copied to SPC locations $1A00-$1A0F)    

05225C    05225D    Length of Type 1 Sound Effect Instruction Pointers and Instructions    

05225E    053E5D    Type 1 Sound Effect Instruction Pointers and Instructions