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taut inst: global volume

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minjaesong
2026-04-30 21:54:11 +09:00
parent 606fa736af
commit 515e0268e6
5 changed files with 88 additions and 48 deletions
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terranmon.txt
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@@ -2005,17 +2005,23 @@ Instrument bin: Registry for 256 instruments, formatted as:
0b hhhh 00pp
h: sample pointer high bit
pp: loop mode. 0-no loop, 1-loop, 2-backandforth, 3-oneshot (ignores note length unless overridden by other notes)
Bit8 Volume envelope sustain loops
0b u0 eee sss
s: sustain loop start index
e: sustain loop end index
u: set to enable the loop
Bit8 Panning envelope sustain loops
0b u0 eee sss
s: sustain loop start index
e: sustain loop end index
u: set to enable the loop
Bit8 Reserved
Bit8 Volume envelope sustain/loops
* Sustain is implemented by enabling 't' flag. FastTracker has no 'Sus Loop' but only 'Sus Point'; use same value for start and end index
0b ut eee sss
s: sustain/loop start index
e: sustain/loop end index
t: the loop must sustain (key-off escapes the loop)
u: set to enable the sustain/loop
Bit8 Panning envelope sustain/loops
* Sustain is implemented by enabling 't' flag
0b ut eee sss
s: sustain/loop start index
e: sustain/loop end index
t: the loop must sustain (key-off escapes the loop)
u: set to enable the sustain/loop
Uint8 Instrument Global Volume (0..255)
* ImpulseTracker has range of 0..128; multiply by (255/128) then round to int
* FastTracker2 has range of 0..64; multiply by (255/64) then round to int
Bit16x8 Volume envelopes
Byte 1: Volume (00..3F)
Byte 2: Time until the next point, in seconds (3.5 Unsigned Minifloat). 0 = hold at this point indefinitely.