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-rw-r--r--engines/kyra/sound_adlib.cpp31
1 files changed, 31 insertions, 0 deletions
diff --git a/engines/kyra/sound_adlib.cpp b/engines/kyra/sound_adlib.cpp
index a797308d78..f5ce4b01b1 100644
--- a/engines/kyra/sound_adlib.cpp
+++ b/engines/kyra/sound_adlib.cpp
@@ -92,6 +92,37 @@ private:
int snd_setFlag(va_list &list);
int snd_clearFlag(va_list &list);
+ // These variables have not yet been named, but some of them are partly
+ // known nevertheless:
+ //
+ // unk1 - Unknown. Used for updating unk4.
+ // unk3 - Unknown. Used for turning off some notes.
+ // unk4 - Unknown. Related to sound timing?
+ // unk5 - Unknown. Used for turning off some notes.
+ // unk6 - Unknown. Used to indicate unk1 should be reset to _tempo.
+ // unk7 - Unknown. Used for turning off some notes.
+ // unk11 - Unknown. Used for updating unk5.
+ // unk12 - Unknown. Used for updating unk7.
+ // unk16 - Sound-related. Possibly some sort of pitch bend.
+ // unk18 - Sound-effect. Used for stateCallback2_1()
+ // unk19 - Sound-effect. Used for stateCallback2_1()
+ // unk20 - Sound-effect. Used for stateCallback2_1()
+ // unk21 - Sound-effect. Used for stateCallback2_1()
+ // unk22 - Sound-effect. Used for stateCallback2_1()
+ // unk29 - Sound-effect. Used for stateCallback1_1()
+ // unk30 - Sound-effect. Used for stateCallback1_1()
+ // unk31 - Sound-effect. Used for stateCallback1_1()
+ // unk32 - Sound-effect. Used for stateCallback1_2()
+ // unk33 - Sound-effect. Used for stateCallback1_2()
+ // unk34 - Sound-effect. Used for stateCallback1_2()
+ // unk35 - Sound-effect. Used for stateCallback1_2()
+ // unk36 - Sound-effect. Used for stateCallback1_2()
+ // unk37 - Sound-effect. Used for stateCallback1_2()
+ // unk38 - Sound-effect. Used for stateCallback1_2()
+ // unk39 - Currently unused, except for updateCallback56()
+ // unk40 - Currently unused, except for updateCallback56()
+ // unk41 - Sound-effect. Used for stateCallback1_2()
+
struct OutputState {
uint8 opExtraLevel2;
uint8 *dataptr;