Commands

Commands

When a note is playing, an instrument program or the track data can modify various parameters by using commands.

The commands are interchangeable between the track commands and the program commands (where applicable). Most of the commands loosely follow the "standards" set by the original Soundtracker and later trackers.

The commands generally follow a pattern: the first two digits tell the action and the next two are the parameter(s) for the command.

xx, yy = parameter to command

Command	Description
00xx	set arpeggio note (final played note = played note + arpeggio note + vibrato etc.)
40xx	set absolute arpeggio note (final played note = absolute arpeggio note + vibrato etc.)
01xx	portamento up
02xx	portamento down
03xx	slide to note with speed xx
04xy	vibrato with speed of x and depth of y
07xx	pulse width down
08xx	pulse width up
09xx	set pulse width
0axy	Fade volume up by x, down by y
0b0x	set waveform (1 = noise, 2 = pulse, 4 = triangle, 8 = saw, 9 = 1 + 8 = noise + saw etc.)
0cxx	set volume
0dxx	jump to pattern position xx (in current pattern only), makes pattern looping possible
0e1x	fine portamento up by x
0e2x	fine portamento down by x
0e9x	retrigger note every x tick
0eax	fine fade volume down by x
0ebx	fine fade volume up by x
0ecx	set volume to zero on tick x (note cut)
0edx	start playing current note on tick x (note delay)
0fxy	set play speeds to x and y. if x is 0, set both to y
10xy	set external arpeggio notes (used with 00f0 and 00f1 in the program)
11xx	portamento up by one semitone
12xx	portamento down by one semitone
17xx	slide panning to left by xx
18xx	set stereo panning to xx, 0 = left, 64 = center, 128 = right
19xx	slide panning to right by xx
1axx	fade global volume, works similar to 0axx
1cxx	set channel volume, works similar to 0cxx
1dxx	set global volume, works similar to 0cxx
1fxx	set play rate to xx
21xx	filter cutoff up
22xx	filter cutoff down
29xx	set cutoff
2axx	set resonance
2bxx	set filter type
2cxx	combined set filter cutoff and type (0x00..0x7F = lowpass, 0x80..0xFF = highpass, similar to AHX command 4xx)
2dxx	jump to the end of the current pattern
31xx	slide buzz tuning up
32xx	slide buzz tuning down
3f0x	set buzz shape (0-3)
39xx	set buzz finetune (0x80 = 0, 0x00 = -128, 0xff = 127)
3axx	set buzz semitune (0x80 = 0, 0x00 = -128, 0xff = 127)
5xxx	start wavetable sample at offset xxx (0-fff)
6xxx	set fine cutoff frequency (0-7ff)
7dxx	restart instument program
fc00	trigger release
fd00	loop begin
fexx	loop to previous "fd00" xx times
ffxx	go to step xx
fffd	trigger note release
fffe	nop (no operation)
ffff	end program

Volume column commands

The volume column can be used to trigger some commands in addition to setting the volume.

Dx	Fade volume down (same as command 0a0x
Ux	Fade volume up (same as command 0ax0