We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS
N-SPC Engine/Nintendo/Koji Kondo/SFX Sequence Format
From SnesLab
Go back to N-SPC Engine/Prototype
The SFX sequence data is slightly modified compared to the standard N-SPC's voice command format. These are headerless, unlike a song, and they only support one channel at a time, with the channel used being fixed. Both games have almost the same command set except for VCMD $FF.
All SFX are initially handled at a tempo of $38.
| VCMD ID | Description | Arguments |
|---|---|---|
| $00 | End of SFX | |
| $01-$7F | Note Duration | xx |
| $80-$C5 | Note | |
| $C6-$CF | Tie | |
| $D0-$D9 | Percussion | |
| $DA | Instrument | xx |
| $DB-$DC | Invalid Note | |
| $DD | Pitch Slide to Note | xx yy zz aa |
| $DE-$EA | Invalid Note | |
| $EB | Note Pitch Envelope To | xx yy zz |
| $EC-$FE | Invalid Note | |
| $FF | Restart SFX (Super Mario World CPUIO0) | |
| $FF | Jump Back One Byte (Super Mario World CPUIO3) | |
| $FF | Jump to SFX ID (Pilotwings) | xx |
TODO VCMD documentation (some of them are identical to standard N-SPC)