shithub: pokered

Download patch

ref: 94d755003ebd0abee80e276f2af964a453ec3ca1
parent: 65245542c7e6f8b1c0bdb46354285dbde32c67ab
author: yenatch <yenatch@gmail.com>
date: Mon Jan 6 17:34:14 EST 2014 

split out the audio engines

diff: cannot open b/audio//null: file does not exist: 'b/audio//null' 
--- /dev/null
+++ b/audio/engine_1.asm
@@ -1,0 +1,1682 @@
+; The first of three duplicated sound engines.
+
+Func_9103: ; 0x9103
+	ld c, CH0
+.loop
+	ld b, $0
+	ld hl, $c026
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr z, .nextChannel
+	ld a, c
+	cp CH4
+	jr nc, .asm_912e ; if sfx channel
+	ld a, [$c002]
+	and a
+	jr z, .asm_912e
+	bit 7, a
+	jr nz, .nextChannel
+	set 7, a
+	ld [$c002], a
+	xor a
+	ld [$ff00+$25], a
+	ld [$ff00+$1a], a
+	ld a, $80
+	ld [$ff00+$1a], a
+	jr .nextChannel
+.asm_912e
+	call Music2_ApplyMusicAffects
+.nextChannel
+	ld a, c
+	inc c ; inc channel number
+	cp CH7
+	jr nz, .loop 
+	ret
+
+; this routine checks flags for music effects currently applied
+; to the channel and calls certain functions based on flags.
+; known flags for $c02e:
+;	1: call has been used
+;	3: a toggle used only by this routine for vibrato
+;	4: pitchbend flag
+;	6: dutycycle flag
+Music2_ApplyMusicAffects: ; 0x9138
+	ld b, $0
+	ld hl, $c0b6 ; delay unitl next note
+	add hl, bc
+	ld a, [hl]
+	cp $1 ; if the delay is 1, play next note
+	jp z, Music2_PlayNextNote
+	dec a ; otherwise, decrease the delay timer
+	ld [hl], a
+	ld a, c
+	cp CH4
+	jr nc, .startChecks ; if a sfx channel
+	ld hl, $c02a
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr z, .startChecks
+	ret
+.startChecks
+	ld hl, $c02e
+	add hl, bc
+	bit 6, [hl] ; dutycycle
+	jr z, .checkForExecuteMusic
+	call Music2_ApplyDutyCycle
+.checkForExecuteMusic
+	ld b, $0
+	ld hl, $c036
+	add hl, bc
+	bit 0, [hl]
+	jr nz, .checkForPitchBend
+	ld hl, $c02e
+	add hl, bc
+	bit 2, [hl]
+	jr nz, .disablePitchBendVibrato
+.checkForPitchBend
+	ld hl, $c02e
+	add hl, bc
+	bit 4, [hl] ; pitchbend
+	jr z, .checkVibratoDelay
+	jp Music2_ApplyPitchBend
+.checkVibratoDelay
+	ld hl, $c04e ; vibrato delay
+	add hl, bc
+	ld a, [hl]
+	and a ; check if delay is over
+	jr z, .checkForVibrato
+	dec [hl] ; otherwise, dec delay
+.disablePitchBendVibrato
+	ret
+.checkForVibrato
+	ld hl, $c056 ; vibrato rate
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr nz, .vibrato
+	ret ; no vibrato
+.vibrato
+	ld d, a
+	ld hl, $c05e
+	add hl, bc
+	ld a, [hl]
+	and $f
+	and a
+	jr z, .vibratoAlreadyDone
+	dec [hl] ; apply vibrato pitch change
+	ret
+.vibratoAlreadyDone
+	ld a, [hl]
+	swap [hl]
+	or [hl]
+	ld [hl], a ; reset the vibrato value and start again
+	ld hl, $c066
+	add hl, bc
+	ld e, [hl] ; get note pitch
+	ld hl, $c02e
+	add hl, bc
+	bit 3, [hl] ; this is the only code that sets/resets bit three so
+	jr z, .unset ; it continuously alternates which path it takes
+	res 3, [hl]
+	ld a, d
+	and $f
+	ld d, a
+	ld a, e
+	sub d
+	jr nc, .noCarry
+	ld a, $0
+.noCarry
+	jr .done
+.unset
+	set 3, [hl]
+	ld a, d
+	and $f0
+	swap a
+	add e
+	jr nc, .done
+	ld a, $ff
+.done
+	ld d, a
+	ld b, $3
+	call Func_9838
+	ld [hl], d
+	ret
+
+; this routine executes all music commands that take up no time,
+; like tempo changes, duty changes etc. and doesn't return
+; until the first note is reached
+Music2_PlayNextNote ; 0x91d0
+	ld hl, $c06e
+	add hl, bc
+	ld a, [hl]
+	ld hl, $c04e
+	add hl, bc
+	ld [hl], a
+	ld hl, $c02e
+	add hl, bc
+	res 4, [hl]
+	res 5, [hl]
+	call Music2_endchannel
+	ret
+
+Music2_endchannel: ; 0x91e6
+	call Music2_GetNextMusicByte
+	ld d, a
+	cp $ff ; is this command an endchannel?
+	jp nz, Music2_callchannel ; no
+	ld b, $0 ; yes
+	ld hl, $c02e
+	add hl, bc
+	bit 1, [hl]
+	jr nz, .returnFromCall
+	ld a, c
+	cp CH3
+	jr nc, .noiseOrSfxChannel
+	jr .asm_923f
+.noiseOrSfxChannel
+	res 2, [hl]
+	ld hl, $c036
+	add hl, bc
+	res 0, [hl]
+	cp CH6
+	jr nz, .notSfxChannel3
+	ld a, $0
+	ld [$ff00+$1a], a
+	ld a, $80
+	ld [$ff00+$1a], a
+.notSfxChannel3
+	jr nz, .asm_9222
+	ld a, [$c003]
+	and a
+	jr z, .asm_9222
+	xor a
+	ld [$c003], a
+	jr .asm_923f
+.asm_9222
+	jr .asm_9248
+.returnFromCall
+	res 1, [hl]
+	ld d, $0
+	ld a, c
+	add a
+	ld e, a
+	ld hl, $c006
+	add hl, de
+	push hl ; store current channel address
+	ld hl, $c016
+	add hl, de
+	ld e, l
+	ld d, h
+	pop hl
+	ld a, [de]
+	ld [hli], a
+	inc de
+	ld a, [de]
+	ld [hl], a ; loads channel address to return to
+	jp Music2_endchannel
+.asm_923f
+	ld hl, Unknown_9b1f
+	add hl, bc
+	ld a, [$ff00+$25]
+	and [hl]
+	ld [$ff00+$25], a
+.asm_9248
+	ld a, [$c02a]
+	cp $14
+	jr nc, .asm_9251
+	jr .asm_926e
+.asm_9251
+	ld a, [$c02a]
+	cp $86
+	jr z, .asm_926e
+	jr c, .asm_925c
+	jr .asm_926e
+.asm_925c
+	ld a, c
+	cp CH4
+	jr z, .asm_9265
+	call Func_96c7
+	ret c
+.asm_9265
+	ld a, [$c005]
+	ld [$ff00+$24], a
+	xor a
+	ld [$c005], a
+.asm_926e
+	ld hl, $c026
+	add hl, bc
+	ld [hl], b
+	ret
+
+Music2_callchannel: ; 0x9274
+	cp $fd ; is this command a callchannel?
+	jp nz, Music2_loopchannel ; no
+	call Music2_GetNextMusicByte ; yes
+	push af
+	call Music2_GetNextMusicByte
+	ld d, a
+	pop af
+	ld e, a
+	push de ; store pointer
+	ld d, $0
+	ld a, c
+	add a
+	ld e, a
+	ld hl, $c006
+	add hl, de
+	push hl
+	ld hl, $c016
+	add hl, de
+	ld e, l
+	ld d, h
+	pop hl
+	ld a, [hli]
+	ld [de], a
+	inc de
+	ld a, [hld]
+	ld [de], a ; copy current channel address
+	pop de
+	ld [hl], e
+	inc hl
+	ld [hl], d ; overwrite current address with pointer
+	ld b, $0
+	ld hl, $c02e
+	add hl, bc
+	set 1, [hl] ; set the call flag
+	jp Music2_endchannel
+
+Music2_loopchannel: ; 0x92a9
+	cp $fe ; is this command a loopchannel?
+	jp nz, Music2_notetype ; no
+	call Music2_GetNextMusicByte ; yes
+	ld e, a
+	and a
+	jr z, .infiniteLoop
+	ld b, $0
+	ld hl, $c0be
+	add hl, bc
+	ld a, [hl]
+	cp e
+	jr nz, .loopAgain
+	ld a, $1 ; if no more loops to make,
+	ld [hl], a
+	call Music2_GetNextMusicByte ; skip pointer
+	call Music2_GetNextMusicByte
+	jp Music2_endchannel
+.loopAgain ; inc loop count
+	inc a
+	ld [hl], a
+	; fall through
+.infiniteLoop ; overwrite current address with pointer
+	call Music2_GetNextMusicByte
+	push af
+	call Music2_GetNextMusicByte
+	ld b, a
+	ld d, $0
+	ld a, c
+	add a
+	ld e, a
+	ld hl, $c006
+	add hl, de
+	pop af
+	ld [hli], a
+	ld [hl], b
+	jp Music2_endchannel
+
+Music2_notetype: ; 0x92e4
+	and $f0
+	cp $d0 ; is this command a notetype?
+	jp nz, Music2_togglecall ; no
+	ld a, d ; yes
+	and $f
+	ld b, $0
+	ld hl, $c0c6
+	add hl, bc
+	ld [hl], a ; store low nibble as speed
+	ld a, c
+	cp CH3
+	jr z, .noiseChannel ; noise channel has 0 params
+	call Music2_GetNextMusicByte
+	ld d, a
+	ld a, c
+	cp CH2
+	jr z, .musicChannel3
+	cp CH6
+	jr nz, .notChannel3
+	ld hl, $c0e7
+	jr .sfxChannel3
+.musicChannel3
+	ld hl, $c0e6
+.sfxChannel3
+	ld a, d
+	and $f
+	ld [hl], a ; store low nibble of param as duty
+	ld a, d
+	and $30
+	sla a
+	ld d, a
+	; fall through
+
+	; if channel 3, store high nibble as volume
+	; else, store volume (high nibble) and fade (low nibble)
+.notChannel3
+	ld b, $0
+	ld hl, $c0de
+	add hl, bc
+	ld [hl], d
+.noiseChannel
+	jp Music2_endchannel
+
+Music2_togglecall: ; 0x9323
+	ld a, d
+	cp $e8 ; is this command an togglecall?
+	jr nz, Music2_vibrato ; no
+	ld b, $0 ; yes
+	ld hl, $c02e
+	add hl, bc
+	ld a, [hl]
+	xor $1
+	ld [hl], a ; flip bit 0 of $c02e (toggle returning from call)
+	jp Music2_endchannel
+
+Music2_vibrato: ; 0x9335
+	cp $ea ; is this command a vibrato?
+	jr nz, Music2_pitchbend ; no
+	call Music2_GetNextMusicByte ; yes
+	ld b, $0
+	ld hl, $c04e
+	add hl, bc
+	ld [hl], a ; store delay 
+	ld hl, $c06e
+	add hl, bc
+	ld [hl], a ; store delay
+	call Music2_GetNextMusicByte
+	ld d, a
+	and $f0
+	swap a
+	ld b, $0
+	ld hl, $c056
+	add hl, bc
+	srl a
+	ld e, a
+	adc b
+	swap a
+	or e
+	ld [hl], a ; store rate as both high and low nibbles
+	ld a, d
+	and $f
+	ld d, a
+	ld hl, $c05e
+	add hl, bc
+	swap a
+	or d
+	ld [hl], a ; store depth as both high and low nibbles
+	jp Music2_endchannel
+
+Music2_pitchbend: ; 0x936d
+	cp $eb ; is this command a pitchbend?
+	jr nz, Music2_duty ; no
+	call Music2_GetNextMusicByte ; yes
+	ld b, $0
+	ld hl, $c076
+	add hl, bc
+	ld [hl], a ; store first param
+	call Music2_GetNextMusicByte
+	ld d, a
+	and $f0
+	swap a
+	ld b, a
+	ld a, d
+	and $f
+	call Func_9858
+	ld b, $0
+	ld hl, $c0a6
+	add hl, bc
+	ld [hl], d ; store unknown part of second param
+	ld hl, $c0ae
+	add hl, bc
+	ld [hl], e ; store unknown part of second param
+	ld b, $0
+	ld hl, $c02e
+	add hl, bc
+	set 4, [hl] ; set pitchbend flag
+	call Music2_GetNextMusicByte
+	ld d, a
+	jp Music2_notelength
+
+Music2_duty: ; 0x93a5
+	cp $ec ; is this command a duty?
+	jr nz, Music2_tempo ; no
+	call Music2_GetNextMusicByte ; yes
+	rrca
+	rrca
+	and $c0
+	ld b, $0
+	ld hl, $c03e
+	add hl, bc
+	ld [hl], a ; store duty
+	jp Music2_endchannel
+
+Music2_tempo: ; 0x93ba
+	cp $ed ; is this command a tempo?
+	jr nz, Music2_unknownmusic0xee ; no
+	ld a, c ; yes
+	cp CH4
+	jr nc, .sfxChannel
+	call Music2_GetNextMusicByte
+	ld [$c0e8], a ; store first param
+	call Music2_GetNextMusicByte
+	ld [$c0e9], a ; store second param
+	xor a
+	ld [$c0ce], a ; clear RAM
+	ld [$c0cf], a
+	ld [$c0d0], a
+	ld [$c0d1], a
+	jr .musicChannelDone
+.sfxChannel
+	call Music2_GetNextMusicByte
+	ld [$c0ea], a ; store first param
+	call Music2_GetNextMusicByte
+	ld [$c0eb], a ; store second param
+	xor a
+	ld [$c0d2], a ; clear RAM
+	ld [$c0d3], a
+	ld [$c0d4], a
+	ld [$c0d5], a
+.musicChannelDone
+	jp Music2_endchannel
+
+Music2_unknownmusic0xee: ; 0x93fa
+	cp $ee ; is this command an unknownmusic0xee?
+	jr nz, Music2_unknownmusic0xef ; no
+	call Music2_GetNextMusicByte ; yes
+	ld [$c004], a ; store first param
+	jp Music2_endchannel
+
+; this appears to never be used
+Music2_unknownmusic0xef ; 0x9407
+	cp $ef ; is this command an unknownmusic0xef?
+	jr nz, Music2_dutycycle ; no
+	call Music2_GetNextMusicByte ; yes
+	push bc
+	call Func_9876
+	pop bc
+	ld a, [$c003]
+	and a
+	jr nz, .skip
+	ld a, [$c02d]
+	ld [$c003], a
+	xor a
+	ld [$c02d], a
+.skip
+	jp Music2_endchannel
+
+Music2_dutycycle: ; 0x9426
+	cp $fc ; is this command a dutycycle?
+	jr nz, Music2_stereopanning ; no
+	call Music2_GetNextMusicByte ; yes
+	ld b, $0
+	ld hl, $c046
+	add hl, bc
+	ld [hl], a ; store full cycle
+	and $c0
+	ld hl, $c03e
+	add hl, bc
+	ld [hl], a ; store first duty
+	ld hl, $c02e
+	add hl, bc
+	set 6, [hl] ; set dutycycle flag
+	jp Music2_endchannel
+
+Music2_stereopanning: ; 0x9444
+	cp $f0 ; is this command a stereopanning?
+	jr nz, Music2_executemusic ; no
+	call Music2_GetNextMusicByte ; yes
+	ld [$ff00+$24], a ; store stereopanning
+	jp Music2_endchannel
+
+Music2_executemusic: ; 0x9450
+	cp $f8 ; is this command an executemusic?
+	jr nz, Music2_octave ; no
+	ld b, $0 ; yes
+	ld hl, $c036
+	add hl, bc
+	set 0, [hl]
+	jp Music2_endchannel
+
+Music2_octave: ; 0x945f
+	and $f0
+	cp $e0 ; is this command an octave?
+	jr nz, Music2_unknownsfx0x20 ; no
+	ld hl, $c0d6 ; yes
+	ld b, $0
+	add hl, bc
+	ld a, d
+	and $f
+	ld [hl], a ; store low nibble as octave
+	jp Music2_endchannel
+
+Music2_unknownsfx0x20: ; 0x9472
+	cp $20 ; is this command an unknownsfx0x20?
+	jr nz, Music2_unknownsfx0x10 ; no
+	ld a, c
+	cp CH3 ; is this a noise or sfx channel?
+	jr c, Music2_unknownsfx0x10 ; no
+	ld b, $0
+	ld hl, $c036
+	add hl, bc
+	bit 0, [hl]
+	jr nz, Music2_unknownsfx0x10 ; no
+	call Music2_notelength ; yes
+	ld d, a
+	ld b, $0
+	ld hl, $c03e
+	add hl, bc
+	ld a, [hl]
+	or d
+	ld d, a
+	ld b, $1
+	call Func_9838
+	ld [hl], d
+	call Music2_GetNextMusicByte
+	ld d, a
+	ld b, $2
+	call Func_9838
+	ld [hl], d
+	call Music2_GetNextMusicByte
+	ld e, a
+	ld a, c
+	cp CH7
+	ld a, $0
+	jr z, .sfxNoiseChannel ; only two params for noise channel
+	push de
+	call Music2_GetNextMusicByte
+	pop de
+.sfxNoiseChannel
+	ld d, a
+	push de
+	call Func_9629
+	call Func_95f8
+	pop de
+	call Func_964b
+	ret
+
+Music2_unknownsfx0x10:
+	ld a, c
+	cp CH4
+	jr c, Music2_note ; if not a sfx
+	ld a, d
+	cp $10 ; is this command a unknownsfx0x10?
+	jr nz, Music2_note ; no
+	ld b, $0
+	ld hl, $c036
+	add hl, bc
+	bit 0, [hl]
+	jr nz, Music2_note ; no
+	call Music2_GetNextMusicByte ; yes
+	ld [$ff00+$10], a
+	jp Music2_endchannel
+
+Music2_note:
+	ld a, c
+	cp CH3
+	jr nz, Music2_notelength ; if not noise channel
+	ld a, d
+	and $f0
+	cp $b0 ; is this command a dnote?
+	jr z, Music2_dnote ; yes
+	jr nc, Music2_notelength ; no
+	swap a
+	ld b, a
+	ld a, d
+	and $f
+	ld d, a
+	ld a, b
+	push de
+	push bc
+	jr asm_94fd
+
+Music2_dnote:
+	ld a, d
+	and $f
+	push af
+	push bc
+	call Music2_GetNextMusicByte ; get dnote instrument
+asm_94fd
+	ld d, a
+	ld a, [$c003]
+	and a
+	jr nz, .asm_9508
+	ld a, d
+	call Func_9876
+.asm_9508
+	pop bc
+	pop de
+
+Music2_notelength: ; 0x950a
+	ld a, d
+	push af
+	and $f
+	inc a
+	ld b, $0
+	ld e, a  ; store note length (in 16ths)
+	ld d, b
+	ld hl, $c0c6
+	add hl, bc
+	ld a, [hl]
+	ld l, b
+	call Func_9847
+	ld a, c
+	cp CH4
+	jr nc, .sfxChannel
+	ld a, [$c0e8]
+	ld d, a
+	ld a, [$c0e9]
+	ld e, a
+	jr .skip
+.sfxChannel
+	ld d, $1
+	ld e, $0
+	cp CH7
+	jr z, .skip ; if noise channel
+	call Func_9693
+	ld a, [$c0ea]
+	ld d, a
+	ld a, [$c0eb]
+	ld e, a
+.skip
+	ld a, l
+	ld b, $0
+	ld hl, $c0ce
+	add hl, bc
+	ld l, [hl]
+	call Func_9847
+	ld e, l
+	ld d, h
+	ld hl, $c0ce
+	add hl, bc
+	ld [hl], e
+	ld a, d
+	ld hl, $c0b6
+	add hl, bc
+	ld [hl], a
+	ld hl, $c036
+	add hl, bc
+	bit 0, [hl]
+	jr nz, Music2_notepitch
+	ld hl, $c02e
+	add hl, bc
+	bit 2, [hl]
+	jr z, Music2_notepitch
+	pop hl
+	ret
+
+Music2_notepitch: ; 0x9568
+	pop af
+	and $f0
+	cp $c0 ; compare to rest
+	jr nz, .notRest
+	ld a, c
+	cp CH4
+	jr nc, .sfxChannel
+	ld hl, $c02a
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr nz, .done
+	; fall through
+.sfxChannel
+	ld a, c
+	cp CH2
+	jr z, .musicChannel3
+	cp CH6
+	jr nz, .notSfxChannel3
+.musicChannel3
+	ld b, $0
+	ld hl, Unknown_9b1f
+	add hl, bc
+	ld a, [$ff00+$25]
+	and [hl]
+	ld [$ff00+$25], a
+	jr .done
+.notSfxChannel3
+	ld b, $2
+	call Func_9838
+	ld a, $8
+	ld [hli], a
+	inc hl
+	ld a, $80
+	ld [hl], a
+.done
+	ret
+.notRest
+	swap a
+	ld b, $0
+	ld hl, $c0d6
+	add hl, bc
+	ld b, [hl]
+	call Func_9858
+	ld b, $0
+	ld hl, $c02e
+	add hl, bc
+	bit 4, [hl]
+	jr z, .asm_95b8
+	call Func_978f
+.asm_95b8
+	push de
+	ld a, c
+	cp CH4
+	jr nc, .skip ; if sfx channel
+	ld hl, $c02a
+	ld d, $0
+	ld e, a
+	add hl, de
+	ld a, [hl]
+	and a
+	jr nz, .asm_95cb
+	jr .skip
+.asm_95cb
+	pop de
+	ret
+.skip
+	ld b, $0
+	ld hl, $c0de
+	add hl, bc
+	ld d, [hl]
+	ld b, $2
+	call Func_9838
+	ld [hl], d
+	call Func_9629
+	call Func_95f8
+	pop de
+	ld b, $0
+	ld hl, $c02e
+	add hl, bc
+	bit 0, [hl]
+	jr z, .asm_95ef
+	inc e
+	jr nc, .asm_95ef
+	inc d
+.asm_95ef
+	ld hl, $c066
+	add hl, bc
+	ld [hl], e
+	call Func_964b
+	ret
+
+Func_95f8: ; 0x95f8
+	ld b, $0
+	ld hl, Unknown_9b27
+	add hl, bc
+	ld a, [$ff00+$25]
+	or [hl]
+	ld d, a
+	ld a, c
+	cp CH7
+	jr z, .sfxNoiseChannel
+	cp CH4
+	jr nc, .skip ; if sfx channel
+	ld hl, $c02a
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr nz, .skip
+.sfxNoiseChannel
+	ld a, [$c004]
+	ld hl, Unknown_9b27
+	add hl, bc
+	and [hl]
+	ld d, a
+	ld a, [$ff00+$25]
+	ld hl, Unknown_9b1f
+	add hl, bc
+	and [hl]
+	or d
+	ld d, a
+.skip
+	ld a, d
+	ld [$ff00+$25], a
+	ret
+
+Func_9629: ; 0x9629
+	ld b, $0
+	ld hl, $c0b6
+	add hl, bc
+	ld d, [hl]
+	ld a, c
+	cp CH2
+	jr z, .channel3 ; if music channel 3
+	cp CH6
+	jr z, .channel3 ; if sfx channel 3
+	ld a, d
+	and $3f
+	ld d, a
+	ld hl, $c03e
+	add hl, bc
+	ld a, [hl]
+	or d
+	ld d, a
+.channel3
+	ld b, $1
+	call Func_9838
+	ld [hl], d
+	ret
+
+Func_964b: ; 0x964b
+	ld a, c
+	cp CH2
+	jr z, .channel3
+	cp CH6
+	jr nz, .notSfxChannel3
+	; fall through
+.channel3
+	push de
+	ld de, $c0e6
+	cp CH2
+	jr z, .musicChannel3
+	ld de, $c0e7
+.musicChannel3
+	ld a, [de]
+	add a
+	ld d, $0
+	ld e, a
+	ld hl, Music2_Channel3DutyPointers
+	add hl, de
+	ld e, [hl]
+	inc hl
+	ld d, [hl]
+	ld hl, $ff30
+	ld b, $f
+	ld a, $0
+	ld [$ff00+$1a], a
+.loop
+	ld a, [de]
+	inc de
+	ld [hli], a
+	ld a, b
+	dec b
+	and a
+	jr nz, .loop
+	ld a, $80
+	ld [$ff00+$1a], a
+	pop de
+.notSfxChannel3
+	ld a, d
+	or $80
+	and $c7
+	ld d, a
+	ld b, $3
+	call Func_9838
+	ld [hl], e
+	inc hl
+	ld [hl], d
+	call Func_96b5
+	ret
+
+Func_9693: ; 0x9693
+	call Func_96e5
+	jr nc, .asm_96ab
+	ld d, $0
+	ld a, [$c0f2]
+	add $80
+	jr nc, .asm_96a2
+	inc d
+.asm_96a2
+	ld [$c0eb], a
+	ld a, d
+	ld [$c0ea], a
+	jr .asm_96b4
+.asm_96ab
+	xor a
+	ld [$c0eb], a
+	ld a, $1
+	ld [$c0ea], a
+.asm_96b4
+	ret
+
+Func_96b5: ; 0x96b5
+	call Func_96e5
+	jr nc, .asm_96c6
+	ld a, [$c0f1]
+	add e
+	jr nc, .asm_96c1
+	inc d
+.asm_96c1
+	dec hl
+	ld e, a
+	ld [hl], e
+	inc hl
+	ld [hl], d
+.asm_96c6
+	ret
+
+Func_96c7: ; 0x96c7
+	call Func_96e5
+	jr nc, .asm_96e2
+	ld hl, $c006
+	ld e, c
+	ld d, $0
+	sla e
+	rl d
+	add hl, de
+	ld a, [hl]
+	sub $1
+	ld [hl], a
+	inc hl
+	ld a, [hl]
+	sbc $0
+	ld [hl], a
+	scf
+	ret
+.asm_96e2
+	scf
+	ccf
+	ret
+
+Func_96e5: ; 0x96e5
+	ld a, [$c02a]
+	cp $14
+	jr nc, .asm_96ee
+	jr .asm_96f4
+.asm_96ee
+	cp $86
+	jr z, .asm_96f4
+	jr c, .asm_96f7
+.asm_96f4
+	scf
+	ccf
+	ret
+.asm_96f7
+	scf
+	ret
+
+Music2_ApplyPitchBend: ; 0x96f9
+	ld hl, $c02e
+	add hl, bc
+	bit 5, [hl]
+	jp nz, .asm_9740
+	ld hl, $c09e
+	add hl, bc
+	ld e, [hl]
+	ld hl, $c096
+	add hl, bc
+	ld d, [hl]
+	ld hl, $c07e
+	add hl, bc
+	ld l, [hl]
+	ld h, b
+	add hl, de
+	ld d, h
+	ld e, l
+	ld hl, $c08e
+	add hl, bc
+	push hl
+	ld hl, $c086
+	add hl, bc
+	ld a, [hl]
+	pop hl
+	add [hl]
+	ld [hl], a
+	ld a, $0
+	adc e
+	ld e, a
+	ld a, $0
+	adc d
+	ld d, a
+	ld hl, $c0a6
+	add hl, bc
+	ld a, [hl]
+	cp d
+	jp c, .asm_9786
+	jr nz, .asm_9773
+	ld hl, $c0ae
+	add hl, bc
+	ld a, [hl]
+	cp e
+	jp c, .asm_9786
+	jr .asm_9773
+.asm_9740
+	ld hl, $c09e
+	add hl, bc
+	ld a, [hl]
+	ld hl, $c096
+	add hl, bc
+	ld d, [hl]
+	ld hl, $c07e
+	add hl, bc
+	ld e, [hl]
+	sub e
+	ld e, a
+	ld a, d
+	sbc b
+	ld d, a
+	ld hl, $c086
+	add hl, bc
+	ld a, [hl]
+	add a
+	ld [hl], a
+	ld a, e
+	sbc b
+	ld e, a
+	ld a, d
+	sbc b
+	ld d, a
+	ld hl, $c0a6
+	add hl, bc
+	ld a, d
+	cp [hl]
+	jr c, .asm_9786
+	jr nz, .asm_9773
+	ld hl, $c0ae
+	add hl, bc
+	ld a, e
+	cp [hl]
+	jr c, .asm_9786
+.asm_9773
+	ld hl, $c09e
+	add hl, bc
+	ld [hl], e
+	ld hl, $c096
+	add hl, bc
+	ld [hl], d
+	ld b, $3
+	call Func_9838
+	ld a, e
+	ld [hli], a
+	ld [hl], d
+	ret
+.asm_9786
+	ld hl, $c02e
+	add hl, bc
+	res 4, [hl]
+	res 5, [hl]
+	ret
+
+Func_978f: ; 0x978f
+	ld hl, $c096
+	add hl, bc
+	ld [hl], d
+	ld hl, $c09e
+	add hl, bc
+	ld [hl], e
+	ld hl, $c0b6
+	add hl, bc
+	ld a, [hl]
+	ld hl, $c076
+	add hl, bc
+	sub [hl]
+	jr nc, .asm_97a7
+	ld a, $1
+.asm_97a7
+	ld [hl], a
+	ld hl, $c0ae
+	add hl, bc
+	ld a, e
+	sub [hl]
+	ld e, a
+	ld a, d
+	sbc b
+	ld hl, $c0a6
+	add hl, bc
+	sub [hl]
+	jr c, .asm_97c3
+	ld d, a
+	ld b, $0
+	ld hl, $c02e
+	add hl, bc
+	set 5, [hl]
+	jr .asm_97e6
+.asm_97c3
+	ld hl, $c096
+	add hl, bc
+	ld d, [hl]
+	ld hl, $c09e
+	add hl, bc
+	ld e, [hl]
+	ld hl, $c0ae
+	add hl, bc
+	ld a, [hl]
+	sub e
+	ld e, a
+	ld a, d
+	sbc b
+	ld d, a
+	ld hl, $c0a6
+	add hl, bc
+	ld a, [hl]
+	sub d
+	ld d, a
+	ld b, $0
+	ld hl, $c02e
+	add hl, bc
+	res 5, [hl]
+.asm_97e6
+	ld hl, $c076
+	add hl, bc
+.asm_97ea
+	inc b
+	ld a, e
+	sub [hl]
+	ld e, a
+	jr nc, .asm_97ea
+	ld a, d
+	and a
+	jr z, .asm_97f8
+	dec a
+	ld d, a
+	jr .asm_97ea
+.asm_97f8
+	ld a, e
+	add [hl]
+	ld d, b
+	ld b, $0
+	ld hl, $c07e
+	add hl, bc
+	ld [hl], d
+	ld hl, $c086
+	add hl, bc
+	ld [hl], a
+	ld hl, $c08e
+	add hl, bc
+	ld [hl], a
+	ret
+
+Music2_ApplyDutyCycle: ; 0x980d
+	ld b, $0
+	ld hl, $c046
+	add hl, bc
+	ld a, [hl]
+	rlca
+	rlca
+	ld [hl], a
+	and $c0
+	ld d, a
+	ld b, $1
+	call Func_9838
+	ld a, [hl]
+	and $3f
+	or d
+	ld [hl], a
+	ret
+
+Music2_GetNextMusicByte: ; 0x9825
+	ld d, $0
+	ld a, c
+	add a
+	ld e, a
+	ld hl, $c006
+	add hl, de
+	ld a, [hli]
+	ld e, a
+	ld a, [hld]
+	ld d, a
+	ld a, [de] ; get next music command
+	inc de
+	ld [hl], e ; store address of next command
+	inc hl
+	ld [hl], d
+	ret
+
+Func_9838: ; 0x9838
+	ld a, c
+	ld hl, Unknown_9b17
+	add l
+	jr nc, .noCarry
+	inc h
+.noCarry
+	ld l, a
+	ld a, [hl]
+	add b
+	ld l, a
+	ld h, $ff
+	ret
+
+Func_9847: ; 0x9847
+	ld h, $0
+.loop
+	srl a
+	jr nc, .noCarry
+	add hl, de
+.noCarry
+	sla e
+	rl d
+	and a
+	jr z, .done
+	jr .loop
+.done
+	ret
+
+Func_9858: ; 0x9858
+	ld h, $0
+	ld l, a
+	add hl, hl
+	ld d, h
+	ld e, l
+	ld hl, Unknown_9b2f
+	add hl, de
+	ld e, [hl]
+	inc hl
+	ld d, [hl]
+	ld a, b
+.loop
+	cp $7
+	jr z, .done
+	sra d
+	rr e
+	inc a
+	jr .loop
+.done
+	ld a, $8
+	add d
+	ld d, a
+	ret
+
+Func_9876: ; 0x9876
+	ld [$c001], a
+	cp $ff
+	jp z, Func_9a34
+	cp $b9
+	jp z, Func_994e
+	jp c, Func_994e
+	cp $fe
+	jr z, .asm_988d
+	jp nc, Func_994e
+.asm_988d
+	xor a
+	ld [$c000], a
+	ld [$c003], a
+	ld [$c0e9], a
+	ld [$c0e6], a
+	ld [$c0e7], a
+	ld d, $8
+	ld hl, $c016
+	call FillMusicRAM2
+	ld hl, $c006
+	call FillMusicRAM2
+	ld d, $4
+	ld hl, $c026
+	call FillMusicRAM2
+	ld hl, $c02e
+	call FillMusicRAM2
+	ld hl, $c03e
+	call FillMusicRAM2
+	ld hl, $c046
+	call FillMusicRAM2
+	ld hl, $c04e
+	call FillMusicRAM2
+	ld hl, $c056
+	call FillMusicRAM2
+	ld hl, $c05e
+	call FillMusicRAM2
+	ld hl, $c066
+	call FillMusicRAM2
+	ld hl, $c06e
+	call FillMusicRAM2
+	ld hl, $c036
+	call FillMusicRAM2
+	ld hl, $c076
+	call FillMusicRAM2
+	ld hl, $c07e
+	call FillMusicRAM2
+	ld hl, $c086
+	call FillMusicRAM2
+	ld hl, $c08e
+	call FillMusicRAM2
+	ld hl, $c096
+	call FillMusicRAM2
+	ld hl, $c09e
+	call FillMusicRAM2
+	ld hl, $c0a6
+	call FillMusicRAM2
+	ld hl, $c0ae
+	call FillMusicRAM2
+	ld a, $1
+	ld hl, $c0be
+	call FillMusicRAM2
+	ld hl, $c0b6
+	call FillMusicRAM2
+	ld hl, $c0c6
+	call FillMusicRAM2
+	ld [$c0e8], a
+	ld a, $ff
+	ld [$c004], a
+	xor a
+	ld [$ff00+$24], a
+	ld a, $8
+	ld [$ff00+$10], a
+	ld a, $0
+	ld [$ff00+$25], a
+	xor a
+	ld [$ff00+$1a], a
+	ld a, $80
+	ld [$ff00+$1a], a
+	ld a, $77
+	ld [$ff00+$24], a
+	jp Func_9a8f
+
+Func_994e: ; 0x994e
+	ld l, a
+	ld e, a
+	ld h, $0
+	ld d, h
+	add hl, hl
+	add hl, de
+	ld de, SFX_Headers_02
+	add hl, de
+	ld a, h
+	ld [$c0ec], a
+	ld a, l
+	ld [$c0ed], a
+	ld a, [hl]
+	and $c0
+	rlca
+	rlca
+	ld c, a
+.asm_9967
+	ld d, c
+	ld a, c
+	add a
+	add c
+	ld c, a
+	ld b, $0
+	ld a, [$c0ec]
+	ld h, a
+	ld a, [$c0ed]
+	ld l, a
+	add hl, bc
+	ld c, d
+	ld a, [hl]
+	and $f
+	ld e, a
+	ld d, $0
+	ld hl, $c026
+	add hl, de
+	ld a, [hl]
+	and a
+	jr z, .asm_99a3
+	ld a, e
+	cp $7
+	jr nz, .asm_999a
+	ld a, [$c001]
+	cp $14
+	jr nc, .asm_9993
+	ret
+.asm_9993
+	ld a, [hl]
+	cp $14
+	jr z, .asm_99a3
+	jr c, .asm_99a3
+.asm_999a
+	ld a, [$c001]
+	cp [hl]
+	jr z, .asm_99a3
+	jr c, .asm_99a3
+	ret
+.asm_99a3
+	xor a
+	push de
+	ld h, d
+	ld l, e
+	add hl, hl
+	ld d, h
+	ld e, l
+	ld hl, $c016
+	add hl, de
+	ld [hli], a
+	ld [hl], a
+	ld hl, $c006
+	add hl, de
+	ld [hli], a
+	ld [hl], a
+	pop de
+	ld hl, $c026
+	add hl, de
+	ld [hl], a
+	ld hl, $c02e
+	add hl, de
+	ld [hl], a
+	ld hl, $c03e
+	add hl, de
+	ld [hl], a
+	ld hl, $c046
+	add hl, de
+	ld [hl], a
+	ld hl, $c04e
+	add hl, de
+	ld [hl], a
+	ld hl, $c056
+	add hl, de
+	ld [hl], a
+	ld hl, $c05e
+	add hl, de
+	ld [hl], a
+	ld hl, $c066
+	add hl, de
+	ld [hl], a
+	ld hl, $c06e
+	add hl, de
+	ld [hl], a
+	ld hl, $c076
+	add hl, de
+	ld [hl], a
+	ld hl, $c07e
+	add hl, de
+	ld [hl], a
+	ld hl, $c086
+	add hl, de
+	ld [hl], a
+	ld hl, $c08e
+	add hl, de
+	ld [hl], a
+	ld hl, $c096
+	add hl, de
+	ld [hl], a
+	ld hl, $c09e
+	add hl, de
+	ld [hl], a
+	ld hl, $c0a6
+	add hl, de
+	ld [hl], a
+	ld hl, $c0ae
+	add hl, de
+	ld [hl], a
+	ld hl, $c036
+	add hl, de
+	ld [hl], a
+	ld a, $1
+	ld hl, $c0be
+	add hl, de
+	ld [hl], a
+	ld hl, $c0b6
+	add hl, de
+	ld [hl], a
+	ld hl, $c0c6
+	add hl, de
+	ld [hl], a
+	ld a, e
+	cp $4
+	jr nz, .asm_9a2b
+	ld a, $8
+	ld [$ff00+$10], a
+.asm_9a2b
+	ld a, c
+	and a
+	jp z, Func_9a8f
+	dec c
+	jp .asm_9967
+
+Func_9a34: ; 0x9a34
+	ld a, $80
+	ld [$ff00+$26], a
+	ld [$ff00+$1a], a
+	xor a
+	ld [$ff00+$25], a
+	ld [$ff00+$1c], a
+	ld a, $8
+	ld [$ff00+$10], a
+	ld [$ff00+$12], a
+	ld [$ff00+$17], a
+	ld [$ff00+$21], a
+	ld a, $40
+	ld [$ff00+$14], a
+	ld [$ff00+$19], a
+	ld [$ff00+$23], a
+	ld a, $77
+	ld [$ff00+$24], a
+	xor a
+	ld [$c000], a
+	ld [$c003], a
+	ld [$c002], a
+	ld [$c0e9], a
+	ld [$c0eb], a
+	ld [$c0e6], a
+	ld [$c0e7], a
+	ld d, $a0
+	ld hl, $c006
+	call FillMusicRAM2
+	ld a, $1
+	ld d, $18
+	ld hl, $c0b6
+	call FillMusicRAM2
+	ld [$c0e8], a
+	ld [$c0ea], a
+	ld a, $ff
+	ld [$c004], a
+	ret
+
+; fills d bytes at hl with a
+FillMusicRAM2: ; 0x9a89
+	ld b, d
+.loop
+	ld [hli], a
+	dec b
+	jr nz, .loop
+	ret
+
+Func_9a8f: ; 0x9a8f
+	ld a, [$c001]
+	ld l, a
+	ld e, a
+	ld h, $0
+	ld d, h
+	add hl, hl
+	add hl, de
+	ld de, SFX_Headers_02
+	add hl, de
+	ld e, l
+	ld d, h
+	ld hl, $c006
+	ld a, [de] ; get channel number
+	ld b, a
+	rlca
+	rlca
+	and $3
+	ld c, a
+	ld a, b
+	and $f
+	ld b, c
+	inc b
+	inc de
+	ld c, $0
+.asm_9ab1
+	cp c
+	jr z, .asm_9ab9
+	inc c
+	inc hl
+	inc hl
+	jr .asm_9ab1
+.asm_9ab9
+	push hl
+	push bc
+	push af
+	ld b, $0
+	ld c, a
+	ld hl, $c026
+	add hl, bc
+	ld a, [$c001]
+	ld [hl], a
+	pop af
+	cp $3
+	jr c, .asm_9ad2
+	ld hl, $c02e
+	add hl, bc
+	set 2, [hl]
+.asm_9ad2
+	pop bc
+	pop hl
+	ld a, [de] ; get channel pointer
+	ld [hli], a
+	inc de
+	ld a, [de]
+	ld [hli], a
+	inc de
+	inc c
+	dec b
+	ld a, b
+	and a
+	ld a, [de]
+	inc de
+	jr nz, .asm_9ab1
+	ld a, [$c001]
+	cp $14
+	jr nc, .asm_9aeb
+	jr .asm_9b15
+.asm_9aeb
+	ld a, [$c001]
+	cp $86
+	jr z, .asm_9b15
+	jr c, .asm_9af6
+	jr .asm_9b15
+.asm_9af6
+	ld hl, $c02a
+	ld [hli], a
+	ld [hli], a
+	ld [hli], a
+	ld [hl], a
+	ld hl, $c012 ; sfx noise channel pointer
+	ld de, Noise2_endchannel
+	ld [hl], e
+	inc hl
+	ld [hl], d ; overwrite pointer to point to endchannel
+	ld a, [$c005]
+	and a
+	jr nz, .asm_9b15
+	ld a, [$ff00+$24]
+	ld [$c005], a
+	ld a, $77
+	ld [$ff00+$24], a
+.asm_9b15
+	ret
+
+Noise2_endchannel: ; 0x9b16
+	endchannel
+
+Unknown_9b17: ; 0x9b17
+	db $10, $15, $1A, $1F ; channels 0-3
+	db $10, $15, $1A, $1F ; channels 4-7
+
+Unknown_9b1f: ; 0x9b1f
+	db $EE, $DD, $BB, $77 ; channels 0-3
+	db $EE, $DD, $BB, $77 ; channels 4-7
+
+Unknown_9b27: ; 0x9b27
+	db $11, $22, $44, $88 ; channels 0-3
+	db $11, $22, $44, $88 ; channels 4-7
+
+Unknown_9b2f: ; 0x9b2f
+	dw $F82C
+	dw $F89D
+	dw $F907
+	dw $F96B
+	dw $F9CA
+	dw $FA23
+	dw $FA77
+	dw $FAC7
+	dw $FB12
+	dw $FB58
+	dw $FB9B
+	dw $FBDA
+
+
--- /dev/null
+++ b/audio/engine_2.asm
@@ -1,0 +1,1733 @@
+; The second of three duplicated sound engines.
+
+Func_21879: ; 21879 (8:5879)
+	ld c, CH0
+.loop
+	ld b, $0
+	ld hl, $c026
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr z, .nextChannel
+	ld a, c
+	cp CH4
+	jr nc, .applyAffects ; if sfx channel
+	ld a, [$c002]
+	and a
+	jr z, .applyAffects
+	bit 7, a
+	jr nz, .nextChannel
+	set 7, a
+	ld [$c002], a
+	xor a
+	ld [$FF00+$25], a
+	ld [$FF00+$1a], a
+	ld a, $80
+	ld [$FF00+$1a], a
+	jr .nextChannel
+.applyAffects
+	call Music8_ApplyMusicAffects
+.nextChannel
+	ld a, c
+	inc c
+	cp CH7
+	jr nz, .loop
+	ret
+
+; this routine checks flags for music effects currently applied
+; to the channel and calls certain functions based on flags.
+; known flags for $c02e:
+;	1: call has been used
+;	3: a toggle used only by this routine for vibrato
+;	4: pitchbend flag
+;	6: dutycycle flag
+Music8_ApplyMusicAffects: ; 218ae (8:58ae)
+	ld b, $0
+	ld hl, $c0b6 ; delay unitl next note
+	add hl, bc
+	ld a, [hl]
+	cp $1 ; if the delay is 1, play next note
+	jp z, Music8_PlayNextNote
+	dec a ; otherwise, decrease the delay timer
+	ld [hl], a
+	ld a, c
+	cp CH4
+	jr nc, .startChecks ; if a sfx channel
+	ld hl, $c02a
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr z, .startChecks
+	ret
+.startChecks
+	ld hl, $c02e
+	add hl, bc
+	bit 6, [hl] ; dutycycle
+	jr z, .checkForExecuteMusic
+	call Music8_ApplyDutyCycle
+.checkForExecuteMusic
+	ld b, $0
+	ld hl, $c036
+	add hl, bc
+	bit 0, [hl]
+	jr nz, .checkForPitchBend
+	ld hl, $c02e
+	add hl, bc
+	bit 2, [hl]
+	jr nz, .disablePitchBendVibrato
+.checkForPitchBend
+	ld hl, $c02e
+	add hl, bc
+	bit 4, [hl] ; pitchbend
+	jr z, .checkVibratoDelay
+	jp Music8_ApplyPitchBend
+.checkVibratoDelay
+	ld hl, $c04e ; vibrato delay
+	add hl, bc
+	ld a, [hl]
+	and a ; check if delay is over
+	jr z, .checkForVibrato
+	dec [hl] ; otherwise, dec delay
+.disablePitchBendVibrato
+	ret
+.checkForVibrato
+	ld hl, $c056 ; vibrato rate
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr nz, .vibrato
+	ret ; no vibrato
+.vibrato
+	ld d, a
+	ld hl, $c05e
+	add hl, bc
+	ld a, [hl]
+	and $f
+	and a
+	jr z, .vibratoAlreadyDone
+	dec [hl] ; apply vibrato pitch change
+	ret
+.vibratoAlreadyDone
+	ld a, [hl]
+	swap [hl]
+	or [hl]
+	ld [hl], a ; reset the vibrato value and start again
+	ld hl, $c066
+	add hl, bc
+	ld e, [hl] ; get note pitch
+	ld hl, $c02e
+	add hl, bc
+	bit 3, [hl] ; this is the only code that sets/resets bit three so
+	jr z, .unset ; it continuously alternates which path it takes
+	res 3, [hl]
+	ld a, d
+	and $f
+	ld d, a
+	ld a, e
+	sub d
+	jr nc, .noCarry
+	ld a, $0
+.noCarry
+	jr .done
+.unset
+	set 3, [hl]
+	ld a, d
+	and $f0
+	swap a
+	add e
+	jr nc, .done
+	ld a, $ff
+.done
+	ld d, a
+	ld b, $3
+	call Func_21ff7
+	ld [hl], d
+	ret
+
+; this routine executes all music commands that take up no time,
+; like tempo changes, duty changes etc. and doesn't return
+; until the first note is reached
+Music8_PlayNextNote: ; 21946 (8:5946)
+	ld hl, $c06e
+	add hl, bc
+	ld a, [hl]
+	ld hl, $c04e
+	add hl, bc
+	ld [hl], a
+	ld hl, $c02e
+	add hl, bc
+	res 4, [hl]
+	res 5, [hl]
+	ld a, c
+	cp CH4
+	jr nz, .beginChecks
+	ld a, [$d083]
+	bit 7, a
+	ret nz
+.beginChecks
+	call Music8_endchannel
+	ret
+
+Music8_endchannel: ; 21967 (8:5967)
+	call Music8_GetNextMusicByte
+	ld d, a
+	cp $ff ; is this command an endchannel?
+	jp nz, Music8_callchannel ; no
+	ld b, $0 ; yes
+	ld hl, $c02e
+	add hl, bc
+	bit 1, [hl]
+	jr nz, .returnFromCall
+	ld a, c
+	cp CH3
+	jr nc, .noiseOrSfxChannel
+	jr .asm_219c0
+.noiseOrSfxChannel
+	res 2, [hl]
+	ld hl, $c036
+	add hl, bc
+	res 0, [hl]
+	cp CH6
+	jr nz, .notSfxChannel3
+	ld a, $0
+	ld [$FF00+$1a], a
+	ld a, $80
+	ld [$FF00+$1a], a
+.notSfxChannel3
+	jr nz, .asm_219a3
+	ld a, [$c003]
+	and a
+	jr z, .asm_219a3
+	xor a
+	ld [$c003], a
+	jr .asm_219c0
+.asm_219a3
+	jr .asm_219c9
+.returnFromCall
+	res 1, [hl]
+	ld d, $0
+	ld a, c
+	add a
+	ld e, a
+	ld hl, $c006
+	add hl, de
+	push hl ; store current channel address
+	ld hl, $c016
+	add hl, de
+	ld e, l
+	ld d, h
+	pop hl
+	ld a, [de]
+	ld [hli], a
+	inc de
+	ld a, [de]
+	ld [hl], a ; loads channel address to return to
+	jp Music8_endchannel
+.asm_219c0
+	ld hl, Unknown_222de
+	add hl, bc
+	ld a, [$FF00+$25]
+	and [hl]
+	ld [$FF00+$25], a
+.asm_219c9
+	ld a, [$c02a]
+	cp $14
+	jr nc, .asm_219d2
+	jr .asm_219ef
+.asm_219d2
+	ld a, [$c02a]
+	cp $86
+	jr z, .asm_219ef
+	jr c, .asm_219dd
+	jr .asm_219ef
+.asm_219dd
+	ld a, c
+	cp CH4
+	jr z, .asm_219e6
+	call Func_21e6d
+	ret c
+.asm_219e6
+	ld a, [$c005]
+	ld [$FF00+$24], a
+	xor a
+	ld [$c005], a
+.asm_219ef
+	ld hl, $c026
+	add hl, bc
+	ld [hl], b
+	ret
+
+Music8_callchannel: ; 219f5 (8:59f5)
+	cp $fd ; is this command a callchannel?
+	jp nz, Music8_loopchannel ; no
+	call Music8_GetNextMusicByte ; yes
+	push af
+	call Music8_GetNextMusicByte
+	ld d, a
+	pop af
+	ld e, a
+	push de ; store pointer
+	ld d, $0
+	ld a, c
+	add a
+	ld e, a
+	ld hl, $c006
+	add hl, de
+	push hl
+	ld hl, $c016
+	add hl, de
+	ld e, l
+	ld d, h
+	pop hl
+	ld a, [hli]
+	ld [de], a
+	inc de
+	ld a, [hld]
+	ld [de], a ; copy current channel address
+	pop de
+	ld [hl], e
+	inc hl
+	ld [hl], d ; overwrite current address with pointer
+	ld b, $0
+	ld hl, $c02e
+	add hl, bc
+	set 1, [hl] ; set the call flag
+	jp Music8_endchannel
+
+Music8_loopchannel: ; 21a2a (8:5a2a)
+	cp $fe ; is this command a loopchannel?
+	jp nz, Music8_notetype ; no
+	call Music8_GetNextMusicByte ; yes
+	ld e, a
+	and a
+	jr z, .infiniteLoop
+	ld b, $0
+	ld hl, $c0be
+	add hl, bc
+	ld a, [hl]
+	cp e
+	jr nz, .loopAgain
+	ld a, $1 ; if no more loops to make,
+	ld [hl], a
+	call Music8_GetNextMusicByte ; skip pointer
+	call Music8_GetNextMusicByte
+	jp Music8_endchannel
+.loopAgain ; inc loop count
+	inc a
+	ld [hl], a
+	; fall through
+.infiniteLoop ; overwrite current address with pointer
+	call Music8_GetNextMusicByte
+	push af
+	call Music8_GetNextMusicByte
+	ld b, a
+	ld d, $0
+	ld a, c
+	add a
+	ld e, a
+	ld hl, $c006
+	add hl, de
+	pop af
+	ld [hli], a
+	ld [hl], b
+	jp Music8_endchannel
+
+Music8_notetype: ; 21a65 (8:5a65)
+	and $f0
+	cp $d0 ; is this command a notetype?
+	jp nz, Music8_togglecall ; no
+	ld a, d ; yes
+	and $f
+	ld b, $0
+	ld hl, $c0c6
+	add hl, bc
+	ld [hl], a ; store low nibble as speed
+	ld a, c
+	cp CH3
+	jr z, .noiseChannel ; noise channel has 0 params
+	call Music8_GetNextMusicByte
+	ld d, a
+	ld a, c
+	cp CH2
+	jr z, .musicChannel3
+	cp CH6
+	jr nz, .notChannel3
+	ld hl, $c0e7
+	jr .sfxChannel3
+.musicChannel3
+	ld hl, $c0e6
+.sfxChannel3
+	ld a, d
+	and $f
+	ld [hl], a ; store low nibble of param as duty
+	ld a, d
+	and $30
+	sla a
+	ld d, a
+	; fall through
+
+	; if channel 3, store high nibble as volume
+	; else, store volume (high nibble) and fade (low nibble)
+.notChannel3
+	ld b, $0
+	ld hl, $c0de
+	add hl, bc
+	ld [hl], d
+.noiseChannel
+	jp Music8_endchannel
+
+Music8_togglecall: ; 21aa4 (8:5aa4)
+	ld a, d
+	cp $e8 ; is this command an togglecall?
+	jr nz, Music8_vibrato ; no
+	ld b, $0 ; yes
+	ld hl, $c02e
+	add hl, bc
+	ld a, [hl]
+	xor $1
+	ld [hl], a ; flip bit 0 of $c02e (toggle returning from call)
+	jp Music8_endchannel
+
+Music8_vibrato: ; 21ab6 (8:5ab6)
+	cp $ea ; is this command a vibrato?
+	jr nz, Music8_pitchbend ; no
+	call Music8_GetNextMusicByte ; yes
+	ld b, $0
+	ld hl, $c04e
+	add hl, bc
+	ld [hl], a ; store delay 
+	ld hl, $c06e
+	add hl, bc
+	ld [hl], a ; store delay 
+	call Music8_GetNextMusicByte
+	ld d, a
+	and $f0
+	swap a
+	ld b, $0
+	ld hl, $c056
+	add hl, bc
+	srl a
+	ld e, a
+	adc b
+	swap a
+	or e
+	ld [hl], a ; store rate as both high and low nibbles
+	ld a, d
+	and $f
+	ld d, a
+	ld hl, $c05e
+	add hl, bc
+	swap a
+	or d
+	ld [hl], a ; store depth as both high and low nibbles
+	jp Music8_endchannel
+
+Music8_pitchbend: ; 21aee (8:5aee)
+	cp $eb ; is this command a pitchbend?
+	jr nz, Music8_duty ; no
+	call Music8_GetNextMusicByte ; yes
+	ld b, $0
+	ld hl, $c076
+	add hl, bc
+	ld [hl], a ; store first param
+	call Music8_GetNextMusicByte
+	ld d, a
+	and $f0
+	swap a
+	ld b, a
+	ld a, d
+	and $f
+	call Func_22017
+	ld b, $0
+	ld hl, $c0a6
+	add hl, bc
+	ld [hl], d ; store unknown part of second param
+	ld hl, $c0ae
+	add hl, bc
+	ld [hl], e ; store unknown part of second param
+	ld b, $0
+	ld hl, $c02e
+	add hl, bc
+	set 4, [hl] ; set pitchbend flag
+	call Music8_GetNextMusicByte
+	ld d, a
+	jp Music8_notelength
+
+Music8_duty: ; 21b26 (8:5b26)
+	cp $ec ; is this command a duty?
+	jr nz, Music8_tempo ; no
+	call Music8_GetNextMusicByte ; yes
+	rrca
+	rrca
+	and $c0
+	ld b, $0
+	ld hl, $c03e
+	add hl, bc
+	ld [hl], a ; store duty
+	jp Music8_endchannel
+
+Music8_tempo: ; 21b3b (8:5b3b)
+	cp $ed ; is this command a tempo?
+	jr nz, Music8_unknownmusic0xee ; no
+	ld a, c ; yes
+	cp CH4
+	jr nc, .sfxChannel
+	call Music8_GetNextMusicByte
+	ld [$c0e8], a ; store first param
+	call Music8_GetNextMusicByte
+	ld [$c0e9], a ; store second param
+	xor a
+	ld [$c0ce], a ; clear RAM
+	ld [$c0cf], a
+	ld [$c0d0], a
+	ld [$c0d1], a
+	jr .musicChannelDone
+.sfxChannel
+	call Music8_GetNextMusicByte
+	ld [$c0ea], a ; store first param
+	call Music8_GetNextMusicByte
+	ld [$c0eb], a ; store second param
+	xor a
+	ld [$c0d2], a ; clear RAM
+	ld [$c0d3], a
+	ld [$c0d4], a
+	ld [$c0d5], a
+.musicChannelDone
+	jp Music8_endchannel
+
+Music8_unknownmusic0xee: ; 21b7b (8:5b7b)
+	cp $ee ; is this command an unknownmusic0xee?
+	jr nz, Music8_unknownmusic0xef ; no
+	call Music8_GetNextMusicByte ; yes
+	ld [$c004], a ; store first param
+	jp Music8_endchannel
+
+; this appears to never be used
+Music8_unknownmusic0xef: ; 21b88 (8:5b88)
+	cp $ef ; is this command an unknownmusic0xef?
+	jr nz, Music8_dutycycle ; no
+	call Music8_GetNextMusicByte ; yes
+	push bc
+	call Func_22035
+	pop bc
+	ld a, [$c003]
+	and a
+	jr nz, .skip
+	ld a, [$c02d]
+	ld [$c003], a
+	xor a
+	ld [$c02d], a
+.skip
+	jp Music8_endchannel
+
+Music8_dutycycle: ; 21ba7 (8:5ba7)
+	cp $fc ; is this command a dutycycle?
+	jr nz, Music8_stereopanning ; no
+	call Music8_GetNextMusicByte ; yes
+	ld b, $0
+	ld hl, $c046
+	add hl, bc
+	ld [hl], a ; store full cycle
+	and $c0
+	ld hl, $c03e
+	add hl, bc
+	ld [hl], a ; store first duty
+	ld hl, $c02e
+	add hl, bc
+	set 6, [hl] ; set dutycycle flag
+	jp Music8_endchannel
+
+Music8_stereopanning: ; 21bc5 (8:5bc5)
+	cp $f0 ; is this command a stereopanning?
+	jr nz, Music8_executemusic ; no
+	call Music8_GetNextMusicByte ; yes
+	ld [$FF00+$24], a
+	jp Music8_endchannel
+
+Music8_executemusic: ; 21bd1 (8:5bd1)
+	cp $f8 ; is this command an executemusic?
+	jr nz, Music8_octave ; no
+	ld b, $0 ; yes
+	ld hl, $c036
+	add hl, bc
+	set 0, [hl]
+	jp Music8_endchannel
+
+Music8_octave: ; 21be0 (8:5be0)
+	and $f0
+	cp $e0 ; is this command an octave?
+	jr nz, Music8_unknownsfx0x20 ; no
+	ld hl, $c0d6 ; yes
+	ld b, $0
+	add hl, bc
+	ld a, d
+	and $f
+	ld [hl], a ; store low nibble as octave
+	jp Music8_endchannel
+
+Music8_unknownsfx0x20: ; 21bf3
+	cp $20 ; is this command an unknownsfx0x20?
+	jr nz, Music8_unknownsfx0x10 ; no
+	ld a, c
+	cp CH3 ; is this a noise or sfx channel?
+	jr c, Music8_unknownsfx0x10 ; no
+	ld b, $0
+	ld hl, $c036
+	add hl, bc
+	bit 0, [hl]
+	jr nz, Music8_unknownsfx0x10 ; no
+	call Music8_notelength
+	ld d, a
+	ld b, $0
+	ld hl, $c03e
+	add hl, bc
+	ld a, [hl]
+	or d
+	ld d, a
+	ld b, $1
+	call Func_21ff7
+	ld [hl], d
+	call Music8_GetNextMusicByte
+	ld d, a
+	ld b, $2
+	call Func_21ff7
+	ld [hl], d
+	call Music8_GetNextMusicByte
+	ld e, a
+	ld a, c
+	cp CH7
+	ld a, $0
+	jr z, .sfxNoiseChannel ; only two params for noise channel
+	push de
+	call Music8_GetNextMusicByte
+	pop de
+.sfxNoiseChannel
+	ld d, a
+	push de
+	call Func_21daa
+	call Func_21d79
+	pop de
+	call Func_21dcc
+	ret
+
+Music8_unknownsfx0x10: ; 21c40 (8:5c40)
+	ld a, c
+	cp CH4
+	jr c, Music8_note ; if not a sfx
+	ld a, d
+	cp $10 ; is this command a unknownsfx0x10?
+	jr nz, Music8_note ; no
+	ld b, $0
+	ld hl, $c036
+	add hl, bc
+	bit 0, [hl]
+	jr nz, Music8_note ; no
+	call Music8_GetNextMusicByte ; yes
+	ld [$FF00+$10], a
+	jp Music8_endchannel
+
+Music8_note: ; 21c5c (8:5c5c)
+	ld a, c
+	cp CH3
+	jr nz, Music8_notelength ; if not noise channel
+	ld a, d
+	and $f0
+	cp $b0 ; is this command a dnote?
+	jr z, Music8_dnote ; yes
+	jr nc, Music8_notelength ; no
+	swap a
+	ld b, a
+	ld a, d
+	and $f
+	ld d, a
+	ld a, b
+	push de
+	push bc
+	jr asm_21c7e
+
+Music8_dnote: ; 21c76 (8:5c76)
+	ld a, d
+	and $f
+	push af
+	push bc
+	call Music8_GetNextMusicByte ; get dnote instrument
+asm_21c7e
+	ld d, a
+	ld a, [$c003]
+	and a
+	jr nz, .asm_21c89
+	ld a, d
+	call Func_22035
+.asm_21c89
+	pop bc
+	pop de
+
+Music8_notelength: ; 21c8b (8:5c8b)
+	ld a, d
+	push af
+	and $f
+	inc a
+	ld b, $0
+	ld e, a ; store note length (in 16ths)
+	ld d, b
+	ld hl, $c0c6
+	add hl, bc
+	ld a, [hl]
+	ld l, b
+	call Func_22006
+	ld a, c
+	cp CH4
+	jr nc, .sfxChannel
+	ld a, [$c0e8]
+	ld d, a
+	ld a, [$c0e9]
+	ld e, a
+	jr .skip
+.sfxChannel
+	ld d, $1
+	ld e, $0
+	cp CH7
+	jr z, .skip ; if noise channel
+	call Func_21e2f
+	ld a, [$c0ea]
+	ld d, a
+	ld a, [$c0eb]
+	ld e, a
+.skip
+	ld a, l
+	ld b, $0
+	ld hl, $c0ce
+	add hl, bc
+	ld l, [hl]
+	call Func_22006
+	ld e, l
+	ld d, h
+	ld hl, $c0ce
+	add hl, bc
+	ld [hl], e
+	ld a, d
+	ld hl, $c0b6
+	add hl, bc
+	ld [hl], a
+	ld hl, $c036
+	add hl, bc
+	bit 0, [hl]
+	jr nz, Music8_notepitch
+	ld hl, $c02e
+	add hl, bc
+	bit 2, [hl]
+	jr z, Music8_notepitch
+	pop hl
+	ret
+
+Music8_notepitch: ; 21ce9 (8:5ce9)
+	pop af
+	and $f0
+	cp $c0 ; compare to rest
+	jr nz, .notRest
+	ld a, c
+	cp CH4
+	jr nc, .sfxChannel
+	ld hl, $c02a
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr nz, .done
+	; fall through
+.sfxChannel
+	ld a, c
+	cp CH2
+	jr z, .musicChannel3
+	cp CH6
+	jr nz, .notSfxChannel3
+.musicChannel3
+	ld b, $0
+	ld hl, Unknown_222de
+	add hl, bc
+	ld a, [$FF00+$25]
+	and [hl]
+	ld [$FF00+$25], a
+	jr .done
+.notSfxChannel3
+	ld b, $2
+	call Func_21ff7
+	ld a, $8
+	ld [hli], a
+	inc hl
+	ld a, $80
+	ld [hl], a
+.done
+	ret
+.notRest
+	swap a
+	ld b, $0
+	ld hl, $c0d6
+	add hl, bc
+	ld b, [hl]
+	call Func_22017
+	ld b, $0
+	ld hl, $c02e
+	add hl, bc
+	bit 4, [hl]
+	jr z, .asm_21d39
+	call Func_21f4e
+.asm_21d39
+	push de
+	ld a, c
+	cp CH4
+	jr nc, .skip ; if sfx channel
+	ld hl, $c02a
+	ld d, $0
+	ld e, a
+	add hl, de
+	ld a, [hl]
+	and a
+	jr nz, .asm_21d4c
+	jr .skip
+.asm_21d4c
+	pop de
+	ret
+.skip
+	ld b, $0
+	ld hl, $c0de
+	add hl, bc
+	ld d, [hl]
+	ld b, $2
+	call Func_21ff7
+	ld [hl], d
+	call Func_21daa
+	call Func_21d79
+	pop de
+	ld b, $0
+	ld hl, $c02e
+	add hl, bc
+	bit 0, [hl]
+	jr z, .asm_21d70
+	inc e
+	jr nc, .asm_21d70
+	inc d
+.asm_21d70
+	ld hl, $c066
+	add hl, bc
+	ld [hl], e
+	call Func_21dcc
+	ret
+
+Func_21d79: ; 21d79 (8:5d79)
+	ld b, $0
+	ld hl, Unknown_222e6
+	add hl, bc
+	ld a, [$FF00+$25]
+	or [hl]
+	ld d, a
+	ld a, c
+	cp CH7
+	jr z, .sfxNoiseChannel
+	cp CH4
+	jr nc, .skip ; if sfx channel
+	ld hl, $c02a
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr nz, .skip
+.sfxNoiseChannel
+	ld a, [$c004]
+	ld hl, Unknown_222e6
+	add hl, bc
+	and [hl]
+	ld d, a
+	ld a, [$FF00+$25]
+	ld hl, Unknown_222de
+	add hl, bc
+	and [hl]
+	or d
+	ld d, a
+.skip
+	ld a, d
+	ld [$FF00+$25], a
+	ret
+
+Func_21daa: ; 21daa (8:5daa)
+	ld b, $0
+	ld hl, $c0b6
+	add hl, bc
+	ld d, [hl]
+	ld a, c
+	cp CH2
+	jr z, .channel3 ; if music channel 3
+	cp CH6
+	jr z, .channel3 ; if sfx channel 3
+	ld a, d
+	and $3f
+	ld d, a
+	ld hl, $c03e
+	add hl, bc
+	ld a, [hl]
+	or d
+	ld d, a
+.channel3
+	ld b, $1
+	call Func_21ff7
+	ld [hl], d
+	ret
+
+Func_21dcc: ; 21dcc (8:5dcc)
+	ld a, c
+	cp CH2
+	jr z, .channel3
+	cp CH6
+	jr nz, .notSfxChannel3
+	; fall through
+.channel3
+	push de
+	ld de, $c0e6
+	cp CH2
+	jr z, .musicChannel3
+	ld de, $c0e7
+.musicChannel3
+	ld a, [de]
+	add a
+	ld d, $0
+	ld e, a
+	ld hl, Music8_Channel3DutyPointers
+	add hl, de
+	ld e, [hl]
+	inc hl
+	ld d, [hl]
+	ld hl, $ff30
+	ld b, $f
+	ld a, $0
+	ld [$FF00+$1a], a
+.loop
+	ld a, [de]
+	inc de
+	ld [hli], a
+	ld a, b
+	dec b
+	and a
+	jr nz, .loop
+	ld a, $80
+	ld [$FF00+$1a], a
+	pop de
+.notSfxChannel3
+	ld a, d
+	or $80
+	and $c7
+	ld d, a
+	ld b, $3
+	call Func_21ff7
+	ld [hl], e
+	inc hl
+	ld [hl], d
+	ld a, c
+	cp CH4
+	jr c, .musicChannel
+	call Func_21e56
+.musicChannel
+	ret
+
+Func_21e19: ; 21e19 (8:5e19)
+	ld a, c
+	cp CH4
+	jr nz, .asm_21e2e
+	ld a, [$d083]
+	bit 7, a
+	jr z, .asm_21e2e
+	xor a
+	ld [$c0f1], a
+	ld a, $80
+	ld [$c0f2], a
+.asm_21e2e
+	ret
+
+Func_21e2f: ; 21e2f (8:5e2f)
+	call Func_21e8b
+	jr c, .asm_21e39
+	call Func_21e9f
+	jr nc, .asm_21e4c
+.asm_21e39
+	ld d, $0
+	ld a, [$c0f2]
+	add $80
+	jr nc, .asm_21e43
+	inc d
+.asm_21e43
+	ld [$c0eb], a
+	ld a, d
+	ld [$c0ea], a
+	jr .asm_21e55
+.asm_21e4c
+	xor a
+	ld [$c0eb], a
+	ld a, $1
+	ld [$c0ea], a
+.asm_21e55
+	ret
+
+Func_21e56: ; 21e56 (8:5e56)
+	call Func_21e8b
+	jr c, .asm_21e60
+	call Func_21e9f
+	jr nc, .asm_21e6c
+.asm_21e60
+	ld a, [$c0f1]
+	add e
+	jr nc, .asm_21e67
+	inc d
+.asm_21e67
+	dec hl
+	ld e, a
+	ld [hl], e
+	inc hl
+	ld [hl], d
+.asm_21e6c
+	ret
+
+Func_21e6d: ; 21e6d (8:5e6d)
+	call Func_21e8b
+	jr nc, .asm_21e88
+	ld hl, $c006
+	ld e, c
+	ld d, $0
+	sla e
+	rl d
+	add hl, de
+	ld a, [hl]
+	sub $1
+	ld [hl], a
+	inc hl
+	ld a, [hl]
+	sbc $0
+	ld [hl], a
+	scf
+	ret
+.asm_21e88
+	scf
+	ccf
+	ret
+
+Func_21e8b: ; 21e8b (8:5e8b)
+	ld a, [$c02a]
+	cp $14
+	jr nc, .asm_21e94
+	jr .asm_21e9a
+.asm_21e94
+	cp $86
+	jr z, .asm_21e9a
+	jr c, .asm_21e9d
+.asm_21e9a
+	scf
+	ccf
+	ret
+.asm_21e9d
+	scf
+	ret
+
+Func_21e9f: ; 21e9f (8:5e9f)
+	ld a, [$c02d]
+	ld b, a
+	ld a, [$c02a]
+	or b
+	cp $9d
+	jr nc, .asm_21ead
+	jr .asm_21eb3
+.asm_21ead
+	cp $ea
+	jr z, .asm_21eb3
+	jr c, .asm_21eb6
+.asm_21eb3
+	scf
+	ccf
+	ret
+.asm_21eb6
+	scf
+	ret
+
+Music8_ApplyPitchBend: ; 21eb8 (8:5eb8)
+	ld hl, $c02e
+	add hl, bc
+	bit 5, [hl]
+	jp nz, .asm_21eff
+	ld hl, $c09e
+	add hl, bc
+	ld e, [hl]
+	ld hl, $c096
+	add hl, bc
+	ld d, [hl]
+	ld hl, $c07e
+	add hl, bc
+	ld l, [hl]
+	ld h, b
+	add hl, de
+	ld d, h
+	ld e, l
+	ld hl, $c08e
+	add hl, bc
+	push hl
+	ld hl, $c086
+	add hl, bc
+	ld a, [hl]
+	pop hl
+	add [hl]
+	ld [hl], a
+	ld a, $0
+	adc e
+	ld e, a
+	ld a, $0
+	adc d
+	ld d, a
+	ld hl, $c0a6
+	add hl, bc
+	ld a, [hl]
+	cp d
+	jp c, .asm_21f45
+	jr nz, .asm_21f32
+	ld hl, $c0ae
+	add hl, bc
+	ld a, [hl]
+	cp e
+	jp c, .asm_21f45
+	jr .asm_21f32
+.asm_21eff
+	ld hl, $c09e
+	add hl, bc
+	ld a, [hl]
+	ld hl, $c096
+	add hl, bc
+	ld d, [hl]
+	ld hl, $c07e
+	add hl, bc
+	ld e, [hl]
+	sub e
+	ld e, a
+	ld a, d
+	sbc b
+	ld d, a
+	ld hl, $c086
+	add hl, bc
+	ld a, [hl]
+	add a
+	ld [hl], a
+	ld a, e
+	sbc b
+	ld e, a
+	ld a, d
+	sbc b
+	ld d, a
+	ld hl, $c0a6
+	add hl, bc
+	ld a, d
+	cp [hl]
+	jr c, .asm_21f45
+	jr nz, .asm_21f32
+	ld hl, $c0ae
+	add hl, bc
+	ld a, e
+	cp [hl]
+	jr c, .asm_21f45
+.asm_21f32
+	ld hl, $c09e
+	add hl, bc
+	ld [hl], e
+	ld hl, $c096
+	add hl, bc
+	ld [hl], d
+	ld b, $3
+	call Func_21ff7
+	ld a, e
+	ld [hli], a
+	ld [hl], d
+	ret
+.asm_21f45
+	ld hl, $c02e
+	add hl, bc
+	res 4, [hl]
+	res 5, [hl]
+	ret
+
+Func_21f4e: ; 21f4e (8:5f4e)
+	ld hl, $c096
+	add hl, bc
+	ld [hl], d
+	ld hl, $c09e
+	add hl, bc
+	ld [hl], e
+	ld hl, $c0b6
+	add hl, bc
+	ld a, [hl]
+	ld hl, $c076
+	add hl, bc
+	sub [hl]
+	jr nc, .asm_21f66
+	ld a, $1
+.asm_21f66
+	ld [hl], a
+	ld hl, $c0ae
+	add hl, bc
+	ld a, e
+	sub [hl]
+	ld e, a
+	ld a, d
+	sbc b
+	ld hl, $c0a6
+	add hl, bc
+	sub [hl]
+	jr c, .asm_21f82
+	ld d, a
+	ld b, $0
+	ld hl, $c02e
+	add hl, bc
+	set 5, [hl]
+	jr .asm_21fa5
+.asm_21f82
+	ld hl, $c096
+	add hl, bc
+	ld d, [hl]
+	ld hl, $c09e
+	add hl, bc
+	ld e, [hl]
+	ld hl, $c0ae
+	add hl, bc
+	ld a, [hl]
+	sub e
+	ld e, a
+	ld a, d
+	sbc b
+	ld d, a
+	ld hl, $c0a6
+	add hl, bc
+	ld a, [hl]
+	sub d
+	ld d, a
+	ld b, $0
+	ld hl, $c02e
+	add hl, bc
+	res 5, [hl]
+.asm_21fa5
+	ld hl, $c076
+	add hl, bc
+.asm_21fa9
+	inc b
+	ld a, e
+	sub [hl]
+	ld e, a
+	jr nc, .asm_21fa9
+	ld a, d
+	and a
+	jr z, .asm_21fb7
+	dec a
+	ld d, a
+	jr .asm_21fa9
+.asm_21fb7
+	ld a, e
+	add [hl]
+	ld d, b
+	ld b, $0
+	ld hl, $c07e
+	add hl, bc
+	ld [hl], d
+	ld hl, $c086
+	add hl, bc
+	ld [hl], a
+	ld hl, $c08e
+	add hl, bc
+	ld [hl], a
+	ret
+
+Music8_ApplyDutyCycle: ; 21fcc (8:5fcc)
+	ld b, $0
+	ld hl, $c046
+	add hl, bc
+	ld a, [hl]
+	rlca
+	rlca
+	ld [hl], a
+	and $c0
+	ld d, a
+	ld b, $1
+	call Func_21ff7
+	ld a, [hl]
+	and $3f
+	or d
+	ld [hl], a
+	ret
+
+Music8_GetNextMusicByte: ; 21fe4 (8:5fe4)
+	ld d, $0
+	ld a, c
+	add a
+	ld e, a
+	ld hl, $c006
+	add hl, de
+	ld a, [hli]
+	ld e, a
+	ld a, [hld]
+	ld d, a
+	ld a, [de] ; get next music command
+	inc de
+	ld [hl], e ; store address of next command
+	inc hl
+	ld [hl], d
+	ret
+
+Func_21ff7: ; 21ff7 (8:5ff7)
+	ld a, c
+	ld hl, Unknown_222d6
+	add l
+	jr nc, .noCarry
+	inc h
+.noCarry
+	ld l, a
+	ld a, [hl]
+	add b
+	ld l, a
+	ld h, $ff
+	ret
+
+Func_22006: ; 22006 (8:6006)
+	ld h, $0
+.loop
+	srl a
+	jr nc, .noCarry
+	add hl, de
+.noCarry
+	sla e
+	rl d
+	and a
+	jr z, .done
+	jr .loop
+.done
+	ret
+
+Func_22017: ; 22017 (8:6017)
+	ld h, $0
+	ld l, a
+	add hl, hl
+	ld d, h
+	ld e, l
+	ld hl, Unknown_222ee
+	add hl, de
+	ld e, [hl]
+	inc hl
+	ld d, [hl]
+	ld a, b
+.loop
+	cp CH7
+	jr z, .done
+	sra d
+	rr e
+	inc a
+	jr .loop
+.done
+	ld a, $8
+	add d
+	ld d, a
+	ret
+
+Func_22035: ; 22035 (8:6035)
+	ld [$c001], a
+	cp $ff
+	jp z, Func_221f3
+	cp $e9
+	jp z, Func_2210d
+	jp c, Func_2210d
+	cp $fe
+	jr z, .asm_2204c
+	jp nc, Func_2210d
+.asm_2204c
+	xor a
+	ld [$c000], a
+	ld [$c003], a
+	ld [$c0e9], a
+	ld [$c0e6], a
+	ld [$c0e7], a
+	ld d, $8
+	ld hl, $c016
+	call FillMusicRAM8
+	ld hl, $c006
+	call FillMusicRAM8
+	ld d, $4
+	ld hl, $c026
+	call FillMusicRAM8
+	ld hl, $c02e
+	call FillMusicRAM8
+	ld hl, $c03e
+	call FillMusicRAM8
+	ld hl, $c046
+	call FillMusicRAM8
+	ld hl, $c04e
+	call FillMusicRAM8
+	ld hl, $c056
+	call FillMusicRAM8
+	ld hl, $c05e
+	call FillMusicRAM8
+	ld hl, $c066
+	call FillMusicRAM8
+	ld hl, $c06e
+	call FillMusicRAM8
+	ld hl, $c036
+	call FillMusicRAM8
+	ld hl, $c076
+	call FillMusicRAM8
+	ld hl, $c07e
+	call FillMusicRAM8
+	ld hl, $c086
+	call FillMusicRAM8
+	ld hl, $c08e
+	call FillMusicRAM8
+	ld hl, $c096
+	call FillMusicRAM8
+	ld hl, $c09e
+	call FillMusicRAM8
+	ld hl, $c0a6
+	call FillMusicRAM8
+	ld hl, $c0ae
+	call FillMusicRAM8
+	ld a, $1
+	ld hl, $c0be
+	call FillMusicRAM8
+	ld hl, $c0b6
+	call FillMusicRAM8
+	ld hl, $c0c6
+	call FillMusicRAM8
+	ld [$c0e8], a
+	ld a, $ff
+	ld [$c004], a
+	xor a
+	ld [$FF00+$24], a
+	ld a, $8
+	ld [$FF00+$10], a
+	ld a, $0
+	ld [$FF00+$25], a
+	xor a
+	ld [$FF00+$1a], a
+	ld a, $80
+	ld [$FF00+$1a], a
+	ld a, $77
+	ld [$FF00+$24], a
+	jp Func_2224e
+
+Func_2210d: ; 2210d (8:610d)
+	ld l, a
+	ld e, a
+	ld h, $0
+	ld d, h
+	add hl, hl
+	add hl, de
+	ld de, SFX_Headers_08
+	add hl, de
+	ld a, h
+	ld [$c0ec], a
+	ld a, l
+	ld [$c0ed], a
+	ld a, [hl]
+	and $c0
+	rlca
+	rlca
+	ld c, a
+.asm_22126
+	ld d, c
+	ld a, c
+	add a
+	add c
+	ld c, a
+	ld b, $0
+	ld a, [$c0ec]
+	ld h, a
+	ld a, [$c0ed]
+	ld l, a
+	add hl, bc
+	ld c, d
+	ld a, [hl]
+	and $f
+	ld e, a
+	ld d, $0
+	ld hl, $c026
+	add hl, de
+	ld a, [hl]
+	and a
+	jr z, .asm_22162
+	ld a, e
+	cp $7
+	jr nz, .asm_22159
+	ld a, [$c001]
+	cp $14
+	jr nc, .asm_22152
+	ret
+.asm_22152
+	ld a, [hl]
+	cp $14
+	jr z, .asm_22162
+	jr c, .asm_22162
+.asm_22159
+	ld a, [$c001]
+	cp [hl]
+	jr z, .asm_22162
+	jr c, .asm_22162
+	ret
+.asm_22162
+	xor a
+	push de
+	ld h, d
+	ld l, e
+	add hl, hl
+	ld d, h
+	ld e, l
+	ld hl, $c016
+	add hl, de
+	ld [hli], a
+	ld [hl], a
+	ld hl, $c006
+	add hl, de
+	ld [hli], a
+	ld [hl], a
+	pop de
+	ld hl, $c026
+	add hl, de
+	ld [hl], a
+	ld hl, $c02e
+	add hl, de
+	ld [hl], a
+	ld hl, $c03e
+	add hl, de
+	ld [hl], a
+	ld hl, $c046
+	add hl, de
+	ld [hl], a
+	ld hl, $c04e
+	add hl, de
+	ld [hl], a
+	ld hl, $c056
+	add hl, de
+	ld [hl], a
+	ld hl, $c05e
+	add hl, de
+	ld [hl], a
+	ld hl, $c066
+	add hl, de
+	ld [hl], a
+	ld hl, $c06e
+	add hl, de
+	ld [hl], a
+	ld hl, $c076
+	add hl, de
+	ld [hl], a
+	ld hl, $c07e
+	add hl, de
+	ld [hl], a
+	ld hl, $c086
+	add hl, de
+	ld [hl], a
+	ld hl, $c08e
+	add hl, de
+	ld [hl], a
+	ld hl, $c096
+	add hl, de
+	ld [hl], a
+	ld hl, $c09e
+	add hl, de
+	ld [hl], a
+	ld hl, $c0a6
+	add hl, de
+	ld [hl], a
+	ld hl, $c0ae
+	add hl, de
+	ld [hl], a
+	ld hl, $c036
+	add hl, de
+	ld [hl], a
+	ld a, $1
+	ld hl, $c0be
+	add hl, de
+	ld [hl], a
+	ld hl, $c0b6
+	add hl, de
+	ld [hl], a
+	ld hl, $c0c6
+	add hl, de
+	ld [hl], a
+	ld a, e
+	cp $4
+	jr nz, .asm_221ea
+	ld a, $8
+	ld [$FF00+$10], a
+.asm_221ea
+	ld a, c
+	and a
+	jp z, Func_2224e
+	dec c
+	jp .asm_22126
+
+Func_221f3: ; 221f3 (8:61f3)
+	ld a, $80
+	ld [$FF00+$26], a
+	ld [$FF00+$1a], a
+	xor a
+	ld [$FF00+$25], a
+	ld [$FF00+$1c], a
+	ld a, $8
+	ld [$FF00+$10], a
+	ld [$FF00+$12], a
+	ld [$FF00+$17], a
+	ld [$FF00+$21], a
+	ld a, $40
+	ld [$FF00+$14], a
+	ld [$FF00+$19], a
+	ld [$FF00+$23], a
+	ld a, $77
+	ld [$FF00+$24], a
+	xor a
+	ld [$c000], a
+	ld [$c003], a
+	ld [$c002], a
+	ld [$c0e9], a
+	ld [$c0eb], a
+	ld [$c0e6], a
+	ld [$c0e7], a
+	ld d, $a0
+	ld hl, $c006
+	call FillMusicRAM8
+	ld a, $1
+	ld d, $18
+	ld hl, $c0b6
+	call FillMusicRAM8
+	ld [$c0e8], a
+	ld [$c0ea], a
+	ld a, $ff
+	ld [$c004], a
+	ret
+
+; fills d bytes at hl with a
+FillMusicRAM8: ; 22248 (8:6248)
+	ld b, d
+.loop
+	ld [hli], a
+	dec b
+	jr nz, .loop
+	ret
+
+Func_2224e: ; 2224e (8:624e)
+	ld a, [$c001]
+	ld l, a
+	ld e, a
+	ld h, $0
+	ld d, h
+	add hl, hl
+	add hl, de
+	ld de, SFX_Headers_08
+	add hl, de
+	ld e, l
+	ld d, h
+	ld hl, $c006
+	ld a, [de] ; get channel number
+	ld b, a
+	rlca
+	rlca
+	and $3
+	ld c, a
+	ld a, b
+	and $f
+	ld b, c
+	inc b
+	inc de
+	ld c, $0
+.asm_22270
+	cp c
+	jr z, .asm_22278
+	inc c
+	inc hl
+	inc hl
+	jr .asm_22270
+.asm_22278
+	push hl
+	push bc
+	push af
+	ld b, $0
+	ld c, a
+	ld hl, $c026
+	add hl, bc
+	ld a, [$c001]
+	ld [hl], a
+	pop af
+	cp $3
+	jr c, .asm_22291
+	ld hl, $c02e
+	add hl, bc
+	set 2, [hl]
+.asm_22291
+	pop bc
+	pop hl
+	ld a, [de] ; get channel pointer
+	ld [hli], a
+	inc de
+	ld a, [de]
+	ld [hli], a
+	inc de
+	inc c
+	dec b
+	ld a, b
+	and a
+	ld a, [de]
+	inc de
+	jr nz, .asm_22270
+	ld a, [$c001]
+	cp $14
+	jr nc, .asm_222aa
+	jr .asm_222d4
+.asm_222aa
+	ld a, [$c001]
+	cp $86
+	jr z, .asm_222d4
+	jr c, .asm_222b5
+	jr .asm_222d4
+.asm_222b5
+	ld hl, $c02a
+	ld [hli], a
+	ld [hli], a
+	ld [hli], a
+	ld [hl], a
+	ld hl, $c012 ; sfx noise channel pointer
+	ld de, Noise8_endchannel
+	ld [hl], e
+	inc hl
+	ld [hl], d ; overwrite pointer to point to endchannel
+	ld a, [$c005]
+	and a
+	jr nz, .asm_222d4
+	ld a, [$FF00+$24]
+	ld [$c005], a
+	ld a, $77
+	ld [$FF00+$24], a
+.asm_222d4
+	ret
+
+Noise8_endchannel: ; 222d5 (8:62d5)
+	endchannel
+
+Unknown_222d6: ; 222d6 (8:62d6)
+	db $10, $15, $1A, $1F ; channels 0-3
+	db $10, $15, $1A, $1F ; channels 4-7
+
+Unknown_222de: ; 222de (8:62de)
+	db $EE, $DD, $BB, $77 ; channels 0-3
+	db $EE, $DD, $BB, $77 ; channels 4-7
+
+Unknown_222e6: ; 222e6 (8:62e6)
+	db $11, $22, $44, $88 ; channels 0-3
+	db $11, $22, $44, $88 ; channels 4-7
+
+Unknown_222ee: ; 222ee (8:62ee)
+	dw $F82C
+	dw $F89D
+	dw $F907
+	dw $F96B
+	dw $F9CA
+	dw $FA23
+	dw $FA77
+	dw $FAC7
+	dw $FB12
+	dw $FB58
+	dw $FB9B
+	dw $FBDA
+
+
--- /dev/null
+++ b/audio/engine_3.asm
@@ -1,0 +1,1682 @@
+; The third of three duplicated sound engines.
+
+Func_7d177: ; 7d177 (1f:5177)
+	ld c, CH0
+.loop
+	ld b, $0
+	ld hl, $c026
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr z, .nextChannel
+	ld a, c
+	cp CH4
+	jr nc, .applyAffects ; if sfx channel
+	ld a, [$c002]
+	and a
+	jr z, .applyAffects
+	bit 7, a
+	jr nz, .nextChannel
+	set 7, a
+	ld [$c002], a
+	xor a
+	ld [$FF00+$25], a
+	ld [$FF00+$1a], a
+	ld a, $80
+	ld [$FF00+$1a], a
+	jr .nextChannel
+.applyAffects
+	call Music1f_Music2_ApplyMusicAffects
+.nextChannel
+	ld a, c
+	inc c ; inc channel number
+	cp CH7
+	jr nz, .loop
+	ret
+
+; this routine checks flags for music effects currently applied
+; to the channel and calls certain functions based on flags.
+; known flags for $c02e:
+;	1: call has been used
+;	3: a toggle used only by this routine for vibrato
+;	4: pitchbend flag
+;	6: dutycycle flag
+Music1f_Music2_ApplyMusicAffects: ; 7d1ac (1f:51ac)
+	ld b, $0
+	ld hl, $c0b6 ; delay until next note
+	add hl, bc
+	ld a, [hl]
+	cp $1 ; if delay is 1, play next note
+	jp z, Music1f_Music2_PlayNextNote
+	dec a ; otherwise, decrease the delay timer
+	ld [hl], a
+	ld a, c
+	cp CH4
+	jr nc, .startChecks ; if a sfx channel
+	ld hl, $c02a
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr z, .startChecks
+	ret
+.startChecks
+	ld hl, $c02e
+	add hl, bc
+	bit 6, [hl] ; dutycycle
+	jr z, .checkForExecuteMusic
+	call Music1f_ApplyDutyCycle
+.checkForExecuteMusic
+	ld b, $0
+	ld hl, $c036
+	add hl, bc
+	bit 0, [hl]
+	jr nz, .checkForPitchBend
+	ld hl, $c02e
+	add hl, bc
+	bit 2, [hl]
+	jr nz, .disablePitchBendVibrato
+.checkForPitchBend
+	ld hl, $c02e
+	add hl, bc
+	bit 4, [hl] ; pitchbend
+	jr z, .checkVibratoDelay
+	jp Music1f_ApplyPitchBend
+.checkVibratoDelay
+	ld hl, $c04e ; vibrato delay
+	add hl, bc
+	ld a, [hl]
+	and a ; check if delay is over
+	jr z, .checkForVibrato
+	dec [hl] ; otherwise, dec delay
+.disablePitchBendVibrato
+	ret
+.checkForVibrato
+	ld hl, $c056 ; vibrato rate
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr nz, .vibrato
+	ret ; no vibrato
+.vibrato
+	ld d, a
+	ld hl, $c05e
+	add hl, bc
+	ld a, [hl]
+	and $f
+	and a
+	jr z, .vibratoAlreadyDone
+	dec [hl] ; apply vibrato pitch change
+	ret
+.vibratoAlreadyDone
+	ld a, [hl]
+	swap [hl]
+	or [hl]
+	ld [hl], a ; reset the vibrato value and start again
+	ld hl, $c066
+	add hl, bc
+	ld e, [hl] ; get note pitch
+	ld hl, $c02e
+	add hl, bc
+	bit 3, [hl] ; this is the only code that sets/resets bit three so
+	jr z, .unset ; it continuously alternates which path it takes
+	res 3, [hl]
+	ld a, d
+	and $f
+	ld d, a
+	ld a, e
+	sub d
+	jr nc, .noCarry
+	ld a, $0
+.noCarry
+	jr .done
+.unset
+	set 3, [hl]
+	ld a, d
+	and $f0
+	swap a
+	add e
+	jr nc, .done
+	ld a, $ff
+.done
+	ld d, a
+	ld b, $3
+	call Func_7d8ac
+	ld [hl], d
+	ret
+
+; this routine executes all music commands that take up no time,
+; like tempo changes, duty changes etc. and doesn't return
+; until the first note is reached
+Music1f_Music2_PlayNextNote: ; 7d244 (1f:5244)
+	ld hl, $c06e
+	add hl, bc
+	ld a, [hl]
+	ld hl, $c04e
+	add hl, bc
+	ld [hl], a
+	ld hl, $c02e
+	add hl, bc
+	res 4, [hl]
+	res 5, [hl]
+	call Music1f_endchannel
+	ret
+
+Music1f_endchannel: ; 7d25a (1f:525a)
+	call Music1f_GetNextMusicByte
+	ld d, a
+	cp $ff ; is this command an endchannel?
+	jp nz, Music1f_callchannel ; no
+	ld b, $0 ; yes
+	ld hl, $c02e
+	add hl, bc
+	bit 1, [hl]
+	jr nz, .returnFromCall
+	ld a, c
+	cp CH3
+	jr nc, .noiseOrSfxChannel
+	jr .asm_7d2b3
+.noiseOrSfxChannel
+	res 2, [hl]
+	ld hl, $c036
+	add hl, bc
+	res 0, [hl]
+	cp CH6
+	jr nz, .notSfxChannel3
+	ld a, $0
+	ld [$FF00+$1a], a
+	ld a, $80
+	ld [$FF00+$1a], a
+.notSfxChannel3
+	jr nz, .asm_7d296
+	ld a, [$c003]
+	and a
+	jr z, .asm_7d296
+	xor a
+	ld [$c003], a
+	jr .asm_7d2b3
+.asm_7d296
+	jr .asm_7d2bc
+.returnFromCall
+	res 1, [hl]
+	ld d, $0
+	ld a, c
+	add a
+	ld e, a
+	ld hl, $c006
+	add hl, de
+	push hl ; store current channel address
+	ld hl, $c016
+	add hl, de
+	ld e, l
+	ld d, h
+	pop hl
+	ld a, [de]
+	ld [hli], a
+	inc de
+	ld a, [de]
+	ld [hl], a ; loads channel address to return to
+	jp Music1f_endchannel
+.asm_7d2b3
+	ld hl, Unknown_7db93
+	add hl, bc
+	ld a, [$FF00+$25]
+	and [hl]
+	ld [$FF00+$25], a
+.asm_7d2bc
+	ld a, [$c02a]
+	cp $14
+	jr nc, .asm_7d2c5
+	jr .asm_7d2e2
+.asm_7d2c5
+	ld a, [$c02a]
+	cp $86
+	jr z, .asm_7d2e2
+	jr c, .asm_7d2d0
+	jr .asm_7d2e2
+.asm_7d2d0
+	ld a, c
+	cp CH4
+	jr z, .asm_7d2d9
+	call Func_7d73b
+	ret c
+.asm_7d2d9
+	ld a, [$c005]
+	ld [$FF00+$24], a
+	xor a
+	ld [$c005], a
+.asm_7d2e2
+	ld hl, $c026
+	add hl, bc
+	ld [hl], b
+	ret
+
+Music1f_callchannel: ; 7d2e8 (1f:52e8)
+	cp $fd ; is this command a callchannel?
+	jp nz, Music1f_loopchannel ; no
+	call Music1f_GetNextMusicByte ; yes
+	push af
+	call Music1f_GetNextMusicByte
+	ld d, a
+	pop af
+	ld e, a
+	push de ; store pointer
+	ld d, $0
+	ld a, c
+	add a
+	ld e, a
+	ld hl, $c006
+	add hl, de
+	push hl
+	ld hl, $c016
+	add hl, de
+	ld e, l
+	ld d, h
+	pop hl
+	ld a, [hli]
+	ld [de], a
+	inc de
+	ld a, [hld]
+	ld [de], a ; copy current channel address
+	pop de
+	ld [hl], e
+	inc hl
+	ld [hl], d ; overwrite current address with pointer
+	ld b, $0
+	ld hl, $c02e
+	add hl, bc
+	set 1, [hl] ; set the call flag
+	jp Music1f_endchannel
+
+Music1f_loopchannel: ; 7d31d (1f:531d)
+	cp $fe ; is this command a loopchannel?
+	jp nz, Music1f_notetype ; no
+	call Music1f_GetNextMusicByte ; yes
+	ld e, a
+	and a
+	jr z, .infiniteLoop
+	ld b, $0
+	ld hl, $c0be
+	add hl, bc
+	ld a, [hl]
+	cp e
+	jr nz, .loopAgain
+	ld a, $1 ; if no more loops to make
+	ld [hl], a
+	call Music1f_GetNextMusicByte ; skip pointer
+	call Music1f_GetNextMusicByte
+	jp Music1f_endchannel
+.loopAgain ; inc loop count
+	inc a
+	ld [hl], a
+	; fall through
+.infiniteLoop ; overwrite current address with pointer
+	call Music1f_GetNextMusicByte
+	push af
+	call Music1f_GetNextMusicByte
+	ld b, a
+	ld d, $0
+	ld a, c
+	add a
+	ld e, a
+	ld hl, $c006
+	add hl, de
+	pop af
+	ld [hli], a
+	ld [hl], b
+	jp Music1f_endchannel
+
+Music1f_notetype: ; 7d358 (1f:5358)
+	and $f0
+	cp $d0 ; is this command a notetype?
+	jp nz, Music1f_togglecall ; no
+	ld a, d ; yes
+	and $f
+	ld b, $0
+	ld hl, $c0c6
+	add hl, bc
+	ld [hl], a ; store low nibble as speed
+	ld a, c
+	cp CH3
+	jr z, .noiseChannel ; noise channel has 0 params
+	call Music1f_GetNextMusicByte
+	ld d, a
+	ld a, c
+	cp CH2
+	jr z, .musicChannel3
+	cp CH6
+	jr nz, .notChannel3
+	ld hl, $c0e7
+	jr .sfxChannel3
+.musicChannel3
+	ld hl, $c0e6
+.sfxChannel3
+	ld a, d
+	and $f
+	ld [hl], a ; store low nibble of param as duty
+	ld a, d
+	and $30
+	sla a
+	ld d, a
+	; fall through
+
+	; if channel 3, store high nibble as volume
+	; else, store volume (high nibble) and fade (low nibble)
+.notChannel3
+	ld b, $0
+	ld hl, $c0de
+	add hl, bc
+	ld [hl], d
+.noiseChannel
+	jp Music1f_endchannel
+
+Music1f_togglecall: ; 7d397 (1f:5397)
+	ld a, d
+	cp $e8 ; is this command an togglecall?
+	jr nz, Music1f_vibrato ; no
+	ld b, $0 ; yes
+	ld hl, $c02e
+	add hl, bc
+	ld a, [hl]
+	xor $1
+	ld [hl], a ; flip bit 0 of $c02e (toggle returning from call)
+	jp Music1f_endchannel
+
+Music1f_vibrato: ; 7d3a9 (1f:53a9)
+	cp $ea ; is this command a vibrato?
+	jr nz, Music1f_pitchbend ; no
+	call Music1f_GetNextMusicByte ; yes
+	ld b, $0
+	ld hl, $c04e
+	add hl, bc
+	ld [hl], a ; store delay
+	ld hl, $c06e
+	add hl, bc
+	ld [hl], a ; store delay
+	call Music1f_GetNextMusicByte
+	ld d, a
+	and $f0
+	swap a
+	ld b, $0
+	ld hl, $c056
+	add hl, bc
+	srl a
+	ld e, a
+	adc b
+	swap a
+	or e
+	ld [hl], a ; store rate as both high and low nibbles
+	ld a, d
+	and $f
+	ld d, a
+	ld hl, $c05e
+	add hl, bc
+	swap a
+	or d
+	ld [hl], a ; store depth as both high and low nibbles
+	jp Music1f_endchannel
+
+Music1f_pitchbend: ; 7d3e1 (1f:53e1)
+	cp $eb ; is this command a pitchbend?
+	jr nz, Music1f_duty ; no
+	call Music1f_GetNextMusicByte ; yes
+	ld b, $0
+	ld hl, $c076
+	add hl, bc
+	ld [hl], a ; store first param
+	call Music1f_GetNextMusicByte
+	ld d, a
+	and $f0
+	swap a
+	ld b, a
+	ld a, d
+	and $f
+	call Func_7d8cc
+	ld b, $0
+	ld hl, $c0a6
+	add hl, bc
+	ld [hl], d ; store unknown part of second param
+	ld hl, $c0ae
+	add hl, bc
+	ld [hl], e ; store unknown part of second param
+	ld b, $0
+	ld hl, $c02e
+	add hl, bc
+	set 4, [hl] ; set pitchbend flag
+	call Music1f_GetNextMusicByte
+	ld d, a
+	jp Music1f_notelength
+
+Music1f_duty: ; 7d419 (1f:5419)
+	cp $ec ; is this command a duty?
+	jr nz, Music1f_tempo ; no
+	call Music1f_GetNextMusicByte ; yes
+	rrca
+	rrca
+	and $c0
+	ld b, $0
+	ld hl, $c03e
+	add hl, bc
+	ld [hl], a ; store duty
+	jp Music1f_endchannel
+
+Music1f_tempo: ; 7d42e (1f:542e)
+	cp $ed ; is this command a tempo?
+	jr nz, Music1f_unknownmusic0xee ; no
+	ld a, c ; yes
+	cp CH4
+	jr nc, .sfxChannel
+	call Music1f_GetNextMusicByte
+	ld [$c0e8], a ; store first param
+	call Music1f_GetNextMusicByte
+	ld [$c0e9], a ; store second param
+	xor a
+	ld [$c0ce], a ; clear RAM
+	ld [$c0cf], a
+	ld [$c0d0], a
+	ld [$c0d1], a
+	jr .musicChannelDone
+.sfxChannel
+	call Music1f_GetNextMusicByte
+	ld [$c0ea], a ; store first param
+	call Music1f_GetNextMusicByte
+	ld [$c0eb], a ; store second param
+	xor a
+	ld [$c0d2], a ; clear RAM
+	ld [$c0d3], a
+	ld [$c0d4], a
+	ld [$c0d5], a
+.musicChannelDone
+	jp Music1f_endchannel
+
+Music1f_unknownmusic0xee: ; 7d46e (1f:546e)
+	cp $ee ; is this command an unknownmusic0xee?
+	jr nz, Music1f_unknownmusic0xef ; no
+	call Music1f_GetNextMusicByte ; yes
+	ld [$c004], a ; store first param
+	jp Music1f_endchannel
+
+; this appears to never be used
+Music1f_unknownmusic0xef: ; 7d47b (1f:547b)
+	cp $ef ; is this command an unknownmusic0xef?
+	jr nz, Music1f_dutycycle ; no
+	call Music1f_GetNextMusicByte ; yes
+	push bc
+	call Func_7d8ea
+	pop bc
+	ld a, [$c003]
+	and a
+	jr nz, .skip
+	ld a, [$c02d]
+	ld [$c003], a
+	xor a
+	ld [$c02d], a
+.skip
+	jp Music1f_endchannel
+
+Music1f_dutycycle: ; 7d49a (1f:549a)
+	cp $fc ; is this command a dutycycle?
+	jr nz, Music1f_stereopanning ; no
+	call Music1f_GetNextMusicByte ; yes
+	ld b, $0
+	ld hl, $c046
+	add hl, bc
+	ld [hl], a ; store full cycle
+	and $c0
+	ld hl, $c03e
+	add hl, bc
+	ld [hl], a ; store first duty
+	ld hl, $c02e
+	add hl, bc
+	set 6, [hl] ; set duty flag
+	jp Music1f_endchannel
+
+Music1f_stereopanning: ; 7d4b8 (1f:54b8)
+	cp $f0 ; is this command a stereopanning?
+	jr nz, Music1f_executemusic ; no
+	call Music1f_GetNextMusicByte ; yes
+	ld [$FF00+$24], a ; store stereopanning
+	jp Music1f_endchannel
+
+Music1f_executemusic: ; 7d4c4 (1f:54c4)
+	cp $f8 ; is this command an executemusic?
+	jr nz, Music1f_octave ; no
+	ld b, $0 ; yes
+	ld hl, $c036
+	add hl, bc
+	set 0, [hl]
+	jp Music1f_endchannel
+
+Music1f_octave: ; 7d4d3 (1f:54d3)
+	and $f0
+	cp $e0 ; is this command an octave?
+	jr nz, Music1f_unknownsfx0x20 ; no
+	ld hl, $c0d6 ; yes
+	ld b, $0
+	add hl, bc
+	ld a, d
+	and $f
+	ld [hl], a ; store low nibble as octave
+	jp Music1f_endchannel
+
+Music1f_unknownsfx0x20: ; 7d4e6 (1f:54e6)
+	cp $20 ; is this command an unknownsfx0x20?
+	jr nz, Music1f_unknownsfx0x10 ; no
+	ld a, c
+	cp CH3 ; is this a noise or sfx channel?
+	jr c, Music1f_unknownsfx0x10 ; no
+	ld b, $0
+	ld hl, $c036
+	add hl, bc
+	bit 0, [hl]
+	jr nz, Music1f_unknownsfx0x10 ; no
+	call Music1f_notelength ; yes
+	ld d, a
+	ld b, $0
+	ld hl, $c03e
+	add hl, bc
+	ld a, [hl]
+	or d
+	ld d, a
+	ld b, $1
+	call Func_7d8ac
+	ld [hl], d
+	call Music1f_GetNextMusicByte
+	ld d, a
+	ld b, $2
+	call Func_7d8ac
+	ld [hl], d
+	call Music1f_GetNextMusicByte
+	ld e, a
+	ld a, c
+	cp CH7
+	ld a, $0
+	jr z, .sfxNoiseChannel ; only two params for noise channel
+	push de
+	call Music1f_GetNextMusicByte
+	pop de
+.sfxNoiseChannel
+	ld d, a
+	push de
+	call Func_7d69d
+	call Func_7d66c
+	pop de
+	call Func_7d6bf
+	ret
+
+Music1f_unknownsfx0x10 ; 7d533 (1f:5533)
+	ld a, c
+	cp CH4
+	jr c, Music1f_note ; if not a sfx
+	ld a, d
+	cp $10 ; is this command an unknownsfx0x10?
+	jr nz, Music1f_note ; no
+	ld b, $0
+	ld hl, $c036
+	add hl, bc
+	bit 0, [hl]
+	jr nz, Music1f_note ; no
+	call Music1f_GetNextMusicByte ; yes
+	ld [$FF00+$10], a
+	jp Music1f_endchannel
+
+Music1f_note: ; 7d54f (1f:554f)
+	ld a, c
+	cp CH3
+	jr nz, Music1f_notelength ; if not noise channel
+	ld a, d
+	and $f0
+	cp $b0 ; is this command a dnote?
+	jr z, Music1f_dnote ; yes
+	jr nc, Music1f_notelength ; no
+	swap a
+	ld b, a
+	ld a, d
+	and $f
+	ld d, a
+	ld a, b
+	push de
+	push bc
+	jr asm_7d571
+
+Music1f_dnote: ; 7d569 (1f:5569)
+	ld a, d
+	and $f
+	push af
+	push bc
+	call Music1f_GetNextMusicByte ; get dnote instrument
+asm_7d571
+	ld d, a
+	ld a, [$c003]
+	and a
+	jr nz, .asm_7d57c
+	ld a, d
+	call Func_7d8ea
+.asm_7d57c
+	pop bc
+	pop de
+
+Music1f_notelength: ; 7d57e (1f:557e)
+	ld a, d
+	push af
+	and $f
+	inc a
+	ld b, $0
+	ld e, a  ; store note length (in 16ths)
+	ld d, b
+	ld hl, $c0c6
+	add hl, bc
+	ld a, [hl]
+	ld l, b
+	call Func_7d8bb
+	ld a, c
+	cp CH4
+	jr nc, .sfxChannel
+	ld a, [$c0e8]
+	ld d, a
+	ld a, [$c0e9]
+	ld e, a
+	jr .skip
+.sfxChannel
+	ld d, $1
+	ld e, $0
+	cp CH7
+	jr z, .skip ; if noise channel
+	call Func_7d707
+	ld a, [$c0ea]
+	ld d, a
+	ld a, [$c0eb]
+	ld e, a
+.skip
+	ld a, l
+	ld b, $0
+	ld hl, $c0ce
+	add hl, bc
+	ld l, [hl]
+	call Func_7d8bb
+	ld e, l
+	ld d, h
+	ld hl, $c0ce
+	add hl, bc
+	ld [hl], e
+	ld a, d
+	ld hl, $c0b6
+	add hl, bc
+	ld [hl], a
+	ld hl, $c036
+	add hl, bc
+	bit 0, [hl]
+	jr nz, Music1f_notepitch
+	ld hl, $c02e
+	add hl, bc
+	bit 2, [hl]
+	jr z, Music1f_notepitch
+	pop hl
+	ret
+
+Music1f_notepitch: ; 7d5dc (1f:55dc)
+	pop af
+	and $f0
+	cp $c0 ; compare to rest
+	jr nz, .notRest
+	ld a, c
+	cp CH4
+	jr nc, .sfxChannel
+	ld hl, $c02a
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr nz, .quit
+	; fall through
+.sfxChannel
+	ld a, c
+	cp CH2
+	jr z, .musicChannel3
+	cp CH6
+	jr nz, .notSfxChannel3
+.musicChannel3
+	ld b, $0
+	ld hl, Unknown_7db93
+	add hl, bc
+	ld a, [$FF00+$25]
+	and [hl]
+	ld [$FF00+$25], a
+	jr .quit
+.notSfxChannel3
+	ld b, $2
+	call Func_7d8ac
+	ld a, $8
+	ld [hli], a
+	inc hl
+	ld a, $80
+	ld [hl], a
+.quit
+	ret
+.notRest
+	swap a
+	ld b, $0
+	ld hl, $c0d6
+	add hl, bc
+	ld b, [hl]
+	call Func_7d8cc
+	ld b, $0
+	ld hl, $c02e
+	add hl, bc
+	bit 4, [hl]
+	jr z, .asm_7d62c
+	call Func_7d803
+.asm_7d62c
+	push de
+	ld a, c
+	cp CH4
+	jr nc, .skip ; if sfx Channel
+	ld hl, $c02a
+	ld d, $0
+	ld e, a
+	add hl, de
+	ld a, [hl]
+	and a
+	jr nz, .done
+	jr .skip
+.done
+	pop de
+	ret
+.skip
+	ld b, $0
+	ld hl, $c0de
+	add hl, bc
+	ld d, [hl]
+	ld b, $2
+	call Func_7d8ac
+	ld [hl], d
+	call Func_7d69d
+	call Func_7d66c
+	pop de
+	ld b, $0
+	ld hl, $c02e
+	add hl, bc
+	bit 0, [hl]
+	jr z, .asm_7d663
+	inc e
+	jr nc, .asm_7d663
+	inc d
+.asm_7d663
+	ld hl, $c066
+	add hl, bc
+	ld [hl], e
+	call Func_7d6bf
+	ret
+
+Func_7d66c: ; 7d66c (1f:566c)
+	ld b, $0
+	ld hl, Unknown_7db9b
+	add hl, bc
+	ld a, [$FF00+$25]
+	or [hl]
+	ld d, a
+	ld a, c
+	cp CH7
+	jr z, .sfxNoiseChannel
+	cp CH4
+	jr nc, .skip ; if sfx channel
+	ld hl, $c02a
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr nz, .skip
+.sfxNoiseChannel
+	ld a, [$c004]
+	ld hl, Unknown_7db9b
+	add hl, bc
+	and [hl]
+	ld d, a
+	ld a, [$FF00+$25]
+	ld hl, Unknown_7db93
+	add hl, bc
+	and [hl]
+	or d
+	ld d, a
+.skip
+	ld a, d
+	ld [$FF00+$25], a
+	ret
+
+Func_7d69d: ; 7d69d (1f:569d)
+	ld b, $0
+	ld hl, $c0b6
+	add hl, bc
+	ld d, [hl]
+	ld a, c
+	cp CH2
+	jr z, .channel3 ; if music channel 3
+	cp CH6
+	jr z, .channel3 ; if sfx channel 3
+	ld a, d
+	and $3f
+	ld d, a
+	ld hl, $c03e
+	add hl, bc
+	ld a, [hl]
+	or d
+	ld d, a
+.channel3
+	ld b, $1
+	call Func_7d8ac
+	ld [hl], d
+	ret
+
+Func_7d6bf: ; 7d6bf (1f:56bf)
+	ld a, c
+	cp CH2
+	jr z, .channel3
+	cp CH6
+	jr nz, .notSfxChannel3
+	; fall through
+.channel3
+	push de
+	ld de, $c0e6
+	cp CH2
+	jr z, .musicChannel3
+	ld de, $c0e7
+.musicChannel3
+	ld a, [de]
+	add a
+	ld d, $0
+	ld e, a
+	ld hl, Music1f_Channel3DutyPointers
+	add hl, de
+	ld e, [hl]
+	inc hl
+	ld d, [hl]
+	ld hl, $ff30
+	ld b, $f
+	ld a, $0
+	ld [$FF00+$1a], a
+.loop
+	ld a, [de]
+	inc de
+	ld [hli], a
+	ld a, b
+	dec b
+	and a
+	jr nz, .loop
+	ld a, $80
+	ld [$FF00+$1a], a
+	pop de
+.notSfxChannel3
+	ld a, d
+	or $80
+	and $c7
+	ld d, a
+	ld b, $3
+	call Func_7d8ac
+	ld [hl], e
+	inc hl
+	ld [hl], d
+	call Func_7d729
+	ret
+
+Func_7d707: ; 7d707 (1f:5707)
+	call Func_7d759
+	jr nc, .asm_7d71f
+	ld d, $0
+	ld a, [$c0f2]
+	add $80
+	jr nc, .asm_7d716
+	inc d
+.asm_7d716
+	ld [$c0eb], a
+	ld a, d
+	ld [$c0ea], a
+	jr .asm_7d728
+.asm_7d71f
+	xor a
+	ld [$c0eb], a
+	ld a, $1
+	ld [$c0ea], a
+.asm_7d728
+	ret
+
+Func_7d729: ; 7d729 (1f:5729)
+	call Func_7d759
+	jr nc, .asm_7d73a
+	ld a, [$c0f1]
+	add e
+	jr nc, .asm_7d735
+	inc d
+.asm_7d735
+	dec hl
+	ld e, a
+	ld [hl], e
+	inc hl
+	ld [hl], d
+.asm_7d73a
+	ret
+
+Func_7d73b: ; 7d73b (1f:573b)
+	call Func_7d759
+	jr nc, .asm_7d756
+	ld hl, $c006
+	ld e, c
+	ld d, $0
+	sla e
+	rl d
+	add hl, de
+	ld a, [hl]
+	sub $1
+	ld [hl], a
+	inc hl
+	ld a, [hl]
+	sbc $0
+	ld [hl], a
+	scf
+	ret
+.asm_7d756
+	scf
+	ccf
+	ret
+
+Func_7d759: ; 7d759 (1f:5759)
+	ld a, [$c02a]
+	cp $14
+	jr nc, .asm_7d762
+	jr .asm_7d768
+.asm_7d762
+	cp $86
+	jr z, .asm_7d768
+	jr c, .asm_7d76b
+.asm_7d768
+	scf
+	ccf
+	ret
+.asm_7d76b
+	scf
+	ret
+
+Music1f_ApplyPitchBend: ; 7d76d (1f:576d)
+	ld hl, $c02e
+	add hl, bc
+	bit 5, [hl]
+	jp nz, .asm_7d7b4
+	ld hl, $c09e
+	add hl, bc
+	ld e, [hl]
+	ld hl, $c096
+	add hl, bc
+	ld d, [hl]
+	ld hl, $c07e
+	add hl, bc
+	ld l, [hl]
+	ld h, b
+	add hl, de
+	ld d, h
+	ld e, l
+	ld hl, $c08e
+	add hl, bc
+	push hl
+	ld hl, $c086
+	add hl, bc
+	ld a, [hl]
+	pop hl
+	add [hl]
+	ld [hl], a
+	ld a, $0
+	adc e
+	ld e, a
+	ld a, $0
+	adc d
+	ld d, a
+	ld hl, $c0a6
+	add hl, bc
+	ld a, [hl]
+	cp d
+	jp c, .asm_7d7fa
+	jr nz, .asm_7d7e7
+	ld hl, $c0ae
+	add hl, bc
+	ld a, [hl]
+	cp e
+	jp c, .asm_7d7fa
+	jr .asm_7d7e7
+.asm_7d7b4
+	ld hl, $c09e
+	add hl, bc
+	ld a, [hl]
+	ld hl, $c096
+	add hl, bc
+	ld d, [hl]
+	ld hl, $c07e
+	add hl, bc
+	ld e, [hl]
+	sub e
+	ld e, a
+	ld a, d
+	sbc b
+	ld d, a
+	ld hl, $c086
+	add hl, bc
+	ld a, [hl]
+	add a
+	ld [hl], a
+	ld a, e
+	sbc b
+	ld e, a
+	ld a, d
+	sbc b
+	ld d, a
+	ld hl, $c0a6
+	add hl, bc
+	ld a, d
+	cp [hl]
+	jr c, .asm_7d7fa
+	jr nz, .asm_7d7e7
+	ld hl, $c0ae
+	add hl, bc
+	ld a, e
+	cp [hl]
+	jr c, .asm_7d7fa
+.asm_7d7e7
+	ld hl, $c09e
+	add hl, bc
+	ld [hl], e
+	ld hl, $c096
+	add hl, bc
+	ld [hl], d
+	ld b, $3
+	call Func_7d8ac
+	ld a, e
+	ld [hli], a
+	ld [hl], d
+	ret
+.asm_7d7fa
+	ld hl, $c02e
+	add hl, bc
+	res 4, [hl]
+	res 5, [hl]
+	ret
+
+Func_7d803: ; 7d803 (1f:5803)
+	ld hl, $c096
+	add hl, bc
+	ld [hl], d
+	ld hl, $c09e
+	add hl, bc
+	ld [hl], e
+	ld hl, $c0b6
+	add hl, bc
+	ld a, [hl]
+	ld hl, $c076
+	add hl, bc
+	sub [hl]
+	jr nc, .asm_7d81b
+	ld a, $1
+.asm_7d81b
+	ld [hl], a
+	ld hl, $c0ae
+	add hl, bc
+	ld a, e
+	sub [hl]
+	ld e, a
+	ld a, d
+	sbc b
+	ld hl, $c0a6
+	add hl, bc
+	sub [hl]
+	jr c, .asm_7d837
+	ld d, a
+	ld b, $0
+	ld hl, $c02e
+	add hl, bc
+	set 5, [hl]
+	jr .asm_7d85a
+.asm_7d837
+	ld hl, $c096
+	add hl, bc
+	ld d, [hl]
+	ld hl, $c09e
+	add hl, bc
+	ld e, [hl]
+	ld hl, $c0ae
+	add hl, bc
+	ld a, [hl]
+	sub e
+	ld e, a
+	ld a, d
+	sbc b
+	ld d, a
+	ld hl, $c0a6
+	add hl, bc
+	ld a, [hl]
+	sub d
+	ld d, a
+	ld b, $0
+	ld hl, $c02e
+	add hl, bc
+	res 5, [hl]
+.asm_7d85a
+	ld hl, $c076
+	add hl, bc
+.asm_7d85e
+	inc b
+	ld a, e
+	sub [hl]
+	ld e, a
+	jr nc, .asm_7d85e
+	ld a, d
+	and a
+	jr z, .asm_7d86c
+	dec a
+	ld d, a
+	jr .asm_7d85e
+.asm_7d86c
+	ld a, e
+	add [hl]
+	ld d, b
+	ld b, $0
+	ld hl, $c07e
+	add hl, bc
+	ld [hl], d
+	ld hl, $c086
+	add hl, bc
+	ld [hl], a
+	ld hl, $c08e
+	add hl, bc
+	ld [hl], a
+	ret
+
+Music1f_ApplyDutyCycle: ; 7d881 (1f:5881)
+	ld b, $0
+	ld hl, $c046
+	add hl, bc
+	ld a, [hl]
+	rlca
+	rlca
+	ld [hl], a
+	and $c0
+	ld d, a
+	ld b, $1
+	call Func_7d8ac
+	ld a, [hl]
+	and $3f
+	or d
+	ld [hl], a
+	ret
+
+Music1f_GetNextMusicByte: ; 7d899 (1f:5899)
+	ld d, $0
+	ld a, c
+	add a
+	ld e, a
+	ld hl, $c006
+	add hl, de
+	ld a, [hli]
+	ld e, a
+	ld a, [hld]
+	ld d, a
+	ld a, [de] ; get next music command
+	inc de
+	ld [hl], e ; store address of next command
+	inc hl
+	ld [hl], d
+	ret
+
+Func_7d8ac: ; 7d8ac (1f:58ac)
+	ld a, c
+	ld hl, Unknown_7db8b
+	add l
+	jr nc, .noCarry
+	inc h
+.noCarry
+	ld l, a
+	ld a, [hl]
+	add b
+	ld l, a
+	ld h, $ff
+	ret
+
+Func_7d8bb: ; 7d8bb (1f:58bb)
+	ld h, $0
+.loop
+	srl a
+	jr nc, .noCarry
+	add hl, de
+.noCarry
+	sla e
+	rl d
+	and a
+	jr z, .done
+	jr .loop
+.done
+	ret
+
+Func_7d8cc: ; 7d8cc (1f:58cc)
+	ld h, $0
+	ld l, a
+	add hl, hl
+	ld d, h
+	ld e, l
+	ld hl, Unknown_7dba3
+	add hl, de
+	ld e, [hl]
+	inc hl
+	ld d, [hl]
+	ld a, b
+.loop
+	cp $7
+	jr z, .done
+	sra d
+	rr e
+	inc a
+	jr .loop
+.done
+	ld a, $8
+	add d
+	ld d, a
+	ret
+
+Func_7d8ea: ; 7d8ea (1f:58ea)
+	ld [$c001], a
+	cp $ff
+	jp z, Func_7daa8
+	cp $c2
+	jp z, Func_7d9c2
+	jp c, Func_7d9c2
+	cp $fe
+	jr z, .asm_7d901
+	jp nc, Func_7d9c2
+.asm_7d901
+	xor a
+	ld [$c000], a
+	ld [$c003], a
+	ld [$c0e9], a
+	ld [$c0e6], a
+	ld [$c0e7], a
+	ld d, $8
+	ld hl, $c016
+	call FillMusicRAM1f
+	ld hl, $c006
+	call FillMusicRAM1f
+	ld d, $4
+	ld hl, $c026
+	call FillMusicRAM1f
+	ld hl, $c02e
+	call FillMusicRAM1f
+	ld hl, $c03e
+	call FillMusicRAM1f
+	ld hl, $c046
+	call FillMusicRAM1f
+	ld hl, $c04e
+	call FillMusicRAM1f
+	ld hl, $c056
+	call FillMusicRAM1f
+	ld hl, $c05e
+	call FillMusicRAM1f
+	ld hl, $c066
+	call FillMusicRAM1f
+	ld hl, $c06e
+	call FillMusicRAM1f
+	ld hl, $c036
+	call FillMusicRAM1f
+	ld hl, $c076
+	call FillMusicRAM1f
+	ld hl, $c07e
+	call FillMusicRAM1f
+	ld hl, $c086
+	call FillMusicRAM1f
+	ld hl, $c08e
+	call FillMusicRAM1f
+	ld hl, $c096
+	call FillMusicRAM1f
+	ld hl, $c09e
+	call FillMusicRAM1f
+	ld hl, $c0a6
+	call FillMusicRAM1f
+	ld hl, $c0ae
+	call FillMusicRAM1f
+	ld a, $1
+	ld hl, $c0be
+	call FillMusicRAM1f
+	ld hl, $c0b6
+	call FillMusicRAM1f
+	ld hl, $c0c6
+	call FillMusicRAM1f
+	ld [$c0e8], a
+	ld a, $ff
+	ld [$c004], a
+	xor a
+	ld [$FF00+$24], a
+	ld a, $8
+	ld [$FF00+$10], a
+	ld a, $0
+	ld [$FF00+$25], a
+	xor a
+	ld [$FF00+$1a], a
+	ld a, $80
+	ld [$FF00+$1a], a
+	ld a, $77
+	ld [$FF00+$24], a
+	jp Func_7db03
+
+Func_7d9c2: ; 7d9c2 (1f:59c2)
+	ld l, a
+	ld e, a
+	ld h, $0
+	ld d, h
+	add hl, hl
+	add hl, de
+	ld de, SFX_Headers_1f
+	add hl, de
+	ld a, h
+	ld [$c0ec], a
+	ld a, l
+	ld [$c0ed], a
+	ld a, [hl]
+	and $c0
+	rlca
+	rlca
+	ld c, a
+.asm_7d9db
+	ld d, c
+	ld a, c
+	add a
+	add c
+	ld c, a
+	ld b, $0
+	ld a, [$c0ec]
+	ld h, a
+	ld a, [$c0ed]
+	ld l, a
+	add hl, bc
+	ld c, d
+	ld a, [hl]
+	and $f
+	ld e, a
+	ld d, $0
+	ld hl, $c026
+	add hl, de
+	ld a, [hl]
+	and a
+	jr z, .asm_7da17
+	ld a, e
+	cp $7
+	jr nz, .asm_7da0e
+	ld a, [$c001]
+	cp $14
+	jr nc, .asm_7da07
+	ret
+.asm_7da07
+	ld a, [hl]
+	cp $14
+	jr z, .asm_7da17
+	jr c, .asm_7da17
+.asm_7da0e
+	ld a, [$c001]
+	cp [hl]
+	jr z, .asm_7da17
+	jr c, .asm_7da17
+	ret
+.asm_7da17
+	xor a
+	push de
+	ld h, d
+	ld l, e
+	add hl, hl
+	ld d, h
+	ld e, l
+	ld hl, $c016
+	add hl, de
+	ld [hli], a
+	ld [hl], a
+	ld hl, $c006
+	add hl, de
+	ld [hli], a
+	ld [hl], a
+	pop de
+	ld hl, $c026
+	add hl, de
+	ld [hl], a
+	ld hl, $c02e
+	add hl, de
+	ld [hl], a
+	ld hl, $c03e
+	add hl, de
+	ld [hl], a
+	ld hl, $c046
+	add hl, de
+	ld [hl], a
+	ld hl, $c04e
+	add hl, de
+	ld [hl], a
+	ld hl, $c056
+	add hl, de
+	ld [hl], a
+	ld hl, $c05e
+	add hl, de
+	ld [hl], a
+	ld hl, $c066
+	add hl, de
+	ld [hl], a
+	ld hl, $c06e
+	add hl, de
+	ld [hl], a
+	ld hl, $c076
+	add hl, de
+	ld [hl], a
+	ld hl, $c07e
+	add hl, de
+	ld [hl], a
+	ld hl, $c086
+	add hl, de
+	ld [hl], a
+	ld hl, $c08e
+	add hl, de
+	ld [hl], a
+	ld hl, $c096
+	add hl, de
+	ld [hl], a
+	ld hl, $c09e
+	add hl, de
+	ld [hl], a
+	ld hl, $c0a6
+	add hl, de
+	ld [hl], a
+	ld hl, $c0ae
+	add hl, de
+	ld [hl], a
+	ld hl, $c036
+	add hl, de
+	ld [hl], a
+	ld a, $1
+	ld hl, $c0be
+	add hl, de
+	ld [hl], a
+	ld hl, $c0b6
+	add hl, de
+	ld [hl], a
+	ld hl, $c0c6
+	add hl, de
+	ld [hl], a
+	ld a, e
+	cp $4
+	jr nz, .asm_7da9f
+	ld a, $8
+	ld [$FF00+$10], a
+.asm_7da9f
+	ld a, c
+	and a
+	jp z, Func_7db03
+	dec c
+	jp .asm_7d9db
+
+Func_7daa8: ; 7daa8 (1f:5aa8)
+	ld a, $80
+	ld [$FF00+$26], a
+	ld [$FF00+$1a], a
+	xor a
+	ld [$FF00+$25], a
+	ld [$FF00+$1c], a
+	ld a, $8
+	ld [$FF00+$10], a
+	ld [$FF00+$12], a
+	ld [$FF00+$17], a
+	ld [$FF00+$21], a
+	ld a, $40
+	ld [$FF00+$14], a
+	ld [$FF00+$19], a
+	ld [$FF00+$23], a
+	ld a, $77
+	ld [$FF00+$24], a
+	xor a
+	ld [$c000], a
+	ld [$c003], a
+	ld [$c002], a
+	ld [$c0e9], a
+	ld [$c0eb], a
+	ld [$c0e6], a
+	ld [$c0e7], a
+	ld d, $a0
+	ld hl, $c006
+	call FillMusicRAM1f
+	ld a, $1
+	ld d, $18
+	ld hl, $c0b6
+	call FillMusicRAM1f
+	ld [$c0e8], a
+	ld [$c0ea], a
+	ld a, $ff
+	ld [$c004], a
+	ret
+
+; fills d bytes at hl with a
+FillMusicRAM1f: ; 7dafd (1f:5afd)
+	ld b, d
+.loop
+	ld [hli], a
+	dec b
+	jr nz, .loop
+	ret
+
+Func_7db03: ; 7db03 (1f:5b03)
+	ld a, [$c001]
+	ld l, a
+	ld e, a
+	ld h, $0
+	ld d, h
+	add hl, hl
+	add hl, de
+	ld de, SFX_Headers_1f
+	add hl, de
+	ld e, l
+	ld d, h
+	ld hl, $c006
+	ld a, [de] ; get channel number
+	ld b, a
+	rlca
+	rlca
+	and $3
+	ld c, a
+	ld a, b
+	and $f
+	ld b, c
+	inc b
+	inc de
+	ld c, $0
+.asm_7db25
+	cp c
+	jr z, .asm_7db2d
+	inc c
+	inc hl
+	inc hl
+	jr .asm_7db25
+.asm_7db2d
+	push hl
+	push bc
+	push af
+	ld b, $0
+	ld c, a
+	ld hl, $c026
+	add hl, bc
+	ld a, [$c001]
+	ld [hl], a
+	pop af
+	cp $3
+	jr c, .asm_7db46
+	ld hl, $c02e
+	add hl, bc
+	set 2, [hl]
+.asm_7db46
+	pop bc
+	pop hl
+	ld a, [de] ; get channel pointer
+	ld [hli], a
+	inc de
+	ld a, [de]
+	ld [hli], a
+	inc de
+	inc c
+	dec b
+	ld a, b
+	and a
+	ld a, [de]
+	inc de
+	jr nz, .asm_7db25
+	ld a, [$c001]
+	cp $14
+	jr nc, .asm_7db5f
+	jr .asm_7db89
+.asm_7db5f
+	ld a, [$c001]
+	cp $86
+	jr z, .asm_7db89
+	jr c, .asm_7db6a
+	jr .asm_7db89
+.asm_7db6a
+	ld hl, $c02a
+	ld [hli], a
+	ld [hli], a
+	ld [hli], a
+	ld [hl], a
+	ld hl, $c012 ; sfx noise channel pointer
+	ld de, Noise1f_endchannel
+	ld [hl], e
+	inc hl
+	ld [hl], d ; overwrite pointer to point to endchannel
+	ld a, [$c005]
+	and a
+	jr nz, .asm_7db89
+	ld a, [$FF00+$24]
+	ld [$c005], a
+	ld a, $77
+	ld [$FF00+$24], a
+.asm_7db89
+	ret
+
+Noise1f_endchannel: ; 7db8a (1f:5b8a)
+	endchannel
+
+Unknown_7db8b: ; 7db8b (1f:5b8b)
+	db $10, $15, $1A, $1F ; channels 0-3
+	db $10, $15, $1A, $1F ; channels 4-7
+
+Unknown_7db93: ; 7db93 (1f:5b93)
+	db $EE, $DD, $BB, $77 ; channels 0-3
+	db $EE, $DD, $BB, $77 ; channels 4-7
+
+Unknown_7db9b: ; 7db9b (1f:5b9b)
+	db $11, $22, $44, $88 ; channels 0-3
+	db $11, $22, $44, $88 ; channels 4-7
+
+Unknown_7dba3: ; 7dba3 (1f:5ba3)
+	dw $F82C
+	dw $F89D
+	dw $F907
+	dw $F96B
+	dw $F9CA
+	dw $FA23
+	dw $FA77
+	dw $FAC7
+	dw $FB12
+	dw $FB58
+	dw $FB9B
+	dw $FBDA
+
+
--- a/main.asm
+++ b/main.asm
@@ -18485,1685 +18485,10 @@
 .playSong
 	jp PlayMusic
 
-Func_9103: ; 0x9103
-	ld c, CH0
-.loop
-	ld b, $0
-	ld hl, $c026
-	add hl, bc
-	ld a, [hl]
-	and a
-	jr z, .nextChannel
-	ld a, c
-	cp CH4
-	jr nc, .asm_912e ; if sfx channel
-	ld a, [$c002]
-	and a
-	jr z, .asm_912e
-	bit 7, a
-	jr nz, .nextChannel
-	set 7, a
-	ld [$c002], a
-	xor a
-	ld [$ff00+$25], a
-	ld [$ff00+$1a], a
-	ld a, $80
-	ld [$ff00+$1a], a
-	jr .nextChannel
-.asm_912e
-	call Music2_ApplyMusicAffects
-.nextChannel
-	ld a, c
-	inc c ; inc channel number
-	cp CH7
-	jr nz, .loop 
-	ret
 
-; this routine checks flags for music effects currently applied
-; to the channel and calls certain functions based on flags.
-; known flags for $c02e:
-;	1: call has been used
-;	3: a toggle used only by this routine for vibrato
-;	4: pitchbend flag
-;	6: dutycycle flag
-Music2_ApplyMusicAffects: ; 0x9138
-	ld b, $0
-	ld hl, $c0b6 ; delay unitl next note
-	add hl, bc
-	ld a, [hl]
-	cp $1 ; if the delay is 1, play next note
-	jp z, Music2_PlayNextNote
-	dec a ; otherwise, decrease the delay timer
-	ld [hl], a
-	ld a, c
-	cp CH4
-	jr nc, .startChecks ; if a sfx channel
-	ld hl, $c02a
-	add hl, bc
-	ld a, [hl]
-	and a
-	jr z, .startChecks
-	ret
-.startChecks
-	ld hl, $c02e
-	add hl, bc
-	bit 6, [hl] ; dutycycle
-	jr z, .checkForExecuteMusic
-	call Music2_ApplyDutyCycle
-.checkForExecuteMusic
-	ld b, $0
-	ld hl, $c036
-	add hl, bc
-	bit 0, [hl]
-	jr nz, .checkForPitchBend
-	ld hl, $c02e
-	add hl, bc
-	bit 2, [hl]
-	jr nz, .disablePitchBendVibrato
-.checkForPitchBend
-	ld hl, $c02e
-	add hl, bc
-	bit 4, [hl] ; pitchbend
-	jr z, .checkVibratoDelay
-	jp Music2_ApplyPitchBend
-.checkVibratoDelay
-	ld hl, $c04e ; vibrato delay
-	add hl, bc
-	ld a, [hl]
-	and a ; check if delay is over
-	jr z, .checkForVibrato
-	dec [hl] ; otherwise, dec delay
-.disablePitchBendVibrato
-	ret
-.checkForVibrato
-	ld hl, $c056 ; vibrato rate
-	add hl, bc
-	ld a, [hl]
-	and a
-	jr nz, .vibrato
-	ret ; no vibrato
-.vibrato
-	ld d, a
-	ld hl, $c05e
-	add hl, bc
-	ld a, [hl]
-	and $f
-	and a
-	jr z, .vibratoAlreadyDone
-	dec [hl] ; apply vibrato pitch change
-	ret
-.vibratoAlreadyDone
-	ld a, [hl]
-	swap [hl]
-	or [hl]
-	ld [hl], a ; reset the vibrato value and start again
-	ld hl, $c066
-	add hl, bc
-	ld e, [hl] ; get note pitch
-	ld hl, $c02e
-	add hl, bc
-	bit 3, [hl] ; this is the only code that sets/resets bit three so
-	jr z, .unset ; it continuously alternates which path it takes
-	res 3, [hl]
-	ld a, d
-	and $f
-	ld d, a
-	ld a, e
-	sub d
-	jr nc, .noCarry
-	ld a, $0
-.noCarry
-	jr .done
-.unset
-	set 3, [hl]
-	ld a, d
-	and $f0
-	swap a
-	add e
-	jr nc, .done
-	ld a, $ff
-.done
-	ld d, a
-	ld b, $3
-	call Func_9838
-	ld [hl], d
-	ret
+INCLUDE "audio/engine_1.asm"
 
-; this routine executes all music commands that take up no time,
-; like tempo changes, duty changes etc. and doesn't return
-; until the first note is reached
-Music2_PlayNextNote ; 0x91d0
-	ld hl, $c06e
-	add hl, bc
-	ld a, [hl]
-	ld hl, $c04e
-	add hl, bc
-	ld [hl], a
-	ld hl, $c02e
-	add hl, bc
-	res 4, [hl]
-	res 5, [hl]
-	call Music2_endchannel
-	ret
 
-Music2_endchannel: ; 0x91e6
-	call Music2_GetNextMusicByte
-	ld d, a
-	cp $ff ; is this command an endchannel?
-	jp nz, Music2_callchannel ; no
-	ld b, $0 ; yes
-	ld hl, $c02e
-	add hl, bc
-	bit 1, [hl]
-	jr nz, .returnFromCall
-	ld a, c
-	cp CH3
-	jr nc, .noiseOrSfxChannel
-	jr .asm_923f
-.noiseOrSfxChannel
-	res 2, [hl]
-	ld hl, $c036
-	add hl, bc
-	res 0, [hl]
-	cp CH6
-	jr nz, .notSfxChannel3
-	ld a, $0
-	ld [$ff00+$1a], a
-	ld a, $80
-	ld [$ff00+$1a], a
-.notSfxChannel3
-	jr nz, .asm_9222
-	ld a, [$c003]
-	and a
-	jr z, .asm_9222
-	xor a
-	ld [$c003], a
-	jr .asm_923f
-.asm_9222
-	jr .asm_9248
-.returnFromCall
-	res 1, [hl]
-	ld d, $0
-	ld a, c
-	add a
-	ld e, a
-	ld hl, $c006
-	add hl, de
-	push hl ; store current channel address
-	ld hl, $c016
-	add hl, de
-	ld e, l
-	ld d, h
-	pop hl
-	ld a, [de]
-	ld [hli], a
-	inc de
-	ld a, [de]
-	ld [hl], a ; loads channel address to return to
-	jp Music2_endchannel
-.asm_923f
-	ld hl, Unknown_9b1f
-	add hl, bc
-	ld a, [$ff00+$25]
-	and [hl]
-	ld [$ff00+$25], a
-.asm_9248
-	ld a, [$c02a]
-	cp $14
-	jr nc, .asm_9251
-	jr .asm_926e
-.asm_9251
-	ld a, [$c02a]
-	cp $86
-	jr z, .asm_926e
-	jr c, .asm_925c
-	jr .asm_926e
-.asm_925c
-	ld a, c
-	cp CH4
-	jr z, .asm_9265
-	call Func_96c7
-	ret c
-.asm_9265
-	ld a, [$c005]
-	ld [$ff00+$24], a
-	xor a
-	ld [$c005], a
-.asm_926e
-	ld hl, $c026
-	add hl, bc
-	ld [hl], b
-	ret
-
-Music2_callchannel: ; 0x9274
-	cp $fd ; is this command a callchannel?
-	jp nz, Music2_loopchannel ; no
-	call Music2_GetNextMusicByte ; yes
-	push af
-	call Music2_GetNextMusicByte
-	ld d, a
-	pop af
-	ld e, a
-	push de ; store pointer
-	ld d, $0
-	ld a, c
-	add a
-	ld e, a
-	ld hl, $c006
-	add hl, de
-	push hl
-	ld hl, $c016
-	add hl, de
-	ld e, l
-	ld d, h
-	pop hl
-	ld a, [hli]
-	ld [de], a
-	inc de
-	ld a, [hld]
-	ld [de], a ; copy current channel address
-	pop de
-	ld [hl], e
-	inc hl
-	ld [hl], d ; overwrite current address with pointer
-	ld b, $0
-	ld hl, $c02e
-	add hl, bc
-	set 1, [hl] ; set the call flag
-	jp Music2_endchannel
-
-Music2_loopchannel: ; 0x92a9
-	cp $fe ; is this command a loopchannel?
-	jp nz, Music2_notetype ; no
-	call Music2_GetNextMusicByte ; yes
-	ld e, a
-	and a
-	jr z, .infiniteLoop
-	ld b, $0
-	ld hl, $c0be
-	add hl, bc
-	ld a, [hl]
-	cp e
-	jr nz, .loopAgain
-	ld a, $1 ; if no more loops to make,
-	ld [hl], a
-	call Music2_GetNextMusicByte ; skip pointer
-	call Music2_GetNextMusicByte
-	jp Music2_endchannel
-.loopAgain ; inc loop count
-	inc a
-	ld [hl], a
-	; fall through
-.infiniteLoop ; overwrite current address with pointer
-	call Music2_GetNextMusicByte
-	push af
-	call Music2_GetNextMusicByte
-	ld b, a
-	ld d, $0
-	ld a, c
-	add a
-	ld e, a
-	ld hl, $c006
-	add hl, de
-	pop af
-	ld [hli], a
-	ld [hl], b
-	jp Music2_endchannel
-
-Music2_notetype: ; 0x92e4
-	and $f0
-	cp $d0 ; is this command a notetype?
-	jp nz, Music2_togglecall ; no
-	ld a, d ; yes
-	and $f
-	ld b, $0
-	ld hl, $c0c6
-	add hl, bc
-	ld [hl], a ; store low nibble as speed
-	ld a, c
-	cp CH3
-	jr z, .noiseChannel ; noise channel has 0 params
-	call Music2_GetNextMusicByte
-	ld d, a
-	ld a, c
-	cp CH2
-	jr z, .musicChannel3
-	cp CH6
-	jr nz, .notChannel3
-	ld hl, $c0e7
-	jr .sfxChannel3
-.musicChannel3
-	ld hl, $c0e6
-.sfxChannel3
-	ld a, d
-	and $f
-	ld [hl], a ; store low nibble of param as duty
-	ld a, d
-	and $30
-	sla a
-	ld d, a
-	; fall through
-
-	; if channel 3, store high nibble as volume
-	; else, store volume (high nibble) and fade (low nibble)
-.notChannel3
-	ld b, $0
-	ld hl, $c0de
-	add hl, bc
-	ld [hl], d
-.noiseChannel
-	jp Music2_endchannel
-
-Music2_togglecall: ; 0x9323
-	ld a, d
-	cp $e8 ; is this command an togglecall?
-	jr nz, Music2_vibrato ; no
-	ld b, $0 ; yes
-	ld hl, $c02e
-	add hl, bc
-	ld a, [hl]
-	xor $1
-	ld [hl], a ; flip bit 0 of $c02e (toggle returning from call)
-	jp Music2_endchannel
-
-Music2_vibrato: ; 0x9335
-	cp $ea ; is this command a vibrato?
-	jr nz, Music2_pitchbend ; no
-	call Music2_GetNextMusicByte ; yes
-	ld b, $0
-	ld hl, $c04e
-	add hl, bc
-	ld [hl], a ; store delay 
-	ld hl, $c06e
-	add hl, bc
-	ld [hl], a ; store delay
-	call Music2_GetNextMusicByte
-	ld d, a
-	and $f0
-	swap a
-	ld b, $0
-	ld hl, $c056
-	add hl, bc
-	srl a
-	ld e, a
-	adc b
-	swap a
-	or e
-	ld [hl], a ; store rate as both high and low nibbles
-	ld a, d
-	and $f
-	ld d, a
-	ld hl, $c05e
-	add hl, bc
-	swap a
-	or d
-	ld [hl], a ; store depth as both high and low nibbles
-	jp Music2_endchannel
-
-Music2_pitchbend: ; 0x936d
-	cp $eb ; is this command a pitchbend?
-	jr nz, Music2_duty ; no
-	call Music2_GetNextMusicByte ; yes
-	ld b, $0
-	ld hl, $c076
-	add hl, bc
-	ld [hl], a ; store first param
-	call Music2_GetNextMusicByte
-	ld d, a
-	and $f0
-	swap a
-	ld b, a
-	ld a, d
-	and $f
-	call Func_9858
-	ld b, $0
-	ld hl, $c0a6
-	add hl, bc
-	ld [hl], d ; store unknown part of second param
-	ld hl, $c0ae
-	add hl, bc
-	ld [hl], e ; store unknown part of second param
-	ld b, $0
-	ld hl, $c02e
-	add hl, bc
-	set 4, [hl] ; set pitchbend flag
-	call Music2_GetNextMusicByte
-	ld d, a
-	jp Music2_notelength
-
-Music2_duty: ; 0x93a5
-	cp $ec ; is this command a duty?
-	jr nz, Music2_tempo ; no
-	call Music2_GetNextMusicByte ; yes
-	rrca
-	rrca
-	and $c0
-	ld b, $0
-	ld hl, $c03e
-	add hl, bc
-	ld [hl], a ; store duty
-	jp Music2_endchannel
-
-Music2_tempo: ; 0x93ba
-	cp $ed ; is this command a tempo?
-	jr nz, Music2_unknownmusic0xee ; no
-	ld a, c ; yes
-	cp CH4
-	jr nc, .sfxChannel
-	call Music2_GetNextMusicByte
-	ld [$c0e8], a ; store first param
-	call Music2_GetNextMusicByte
-	ld [$c0e9], a ; store second param
-	xor a
-	ld [$c0ce], a ; clear RAM
-	ld [$c0cf], a
-	ld [$c0d0], a
-	ld [$c0d1], a
-	jr .musicChannelDone
-.sfxChannel
-	call Music2_GetNextMusicByte
-	ld [$c0ea], a ; store first param
-	call Music2_GetNextMusicByte
-	ld [$c0eb], a ; store second param
-	xor a
-	ld [$c0d2], a ; clear RAM
-	ld [$c0d3], a
-	ld [$c0d4], a
-	ld [$c0d5], a
-.musicChannelDone
-	jp Music2_endchannel
-
-Music2_unknownmusic0xee: ; 0x93fa
-	cp $ee ; is this command an unknownmusic0xee?
-	jr nz, Music2_unknownmusic0xef ; no
-	call Music2_GetNextMusicByte ; yes
-	ld [$c004], a ; store first param
-	jp Music2_endchannel
-
-; this appears to never be used
-Music2_unknownmusic0xef ; 0x9407
-	cp $ef ; is this command an unknownmusic0xef?
-	jr nz, Music2_dutycycle ; no
-	call Music2_GetNextMusicByte ; yes
-	push bc
-	call Func_9876
-	pop bc
-	ld a, [$c003]
-	and a
-	jr nz, .skip
-	ld a, [$c02d]
-	ld [$c003], a
-	xor a
-	ld [$c02d], a
-.skip
-	jp Music2_endchannel
-
-Music2_dutycycle: ; 0x9426
-	cp $fc ; is this command a dutycycle?
-	jr nz, Music2_stereopanning ; no
-	call Music2_GetNextMusicByte ; yes
-	ld b, $0
-	ld hl, $c046
-	add hl, bc
-	ld [hl], a ; store full cycle
-	and $c0
-	ld hl, $c03e
-	add hl, bc
-	ld [hl], a ; store first duty
-	ld hl, $c02e
-	add hl, bc
-	set 6, [hl] ; set dutycycle flag
-	jp Music2_endchannel
-
-Music2_stereopanning: ; 0x9444
-	cp $f0 ; is this command a stereopanning?
-	jr nz, Music2_executemusic ; no
-	call Music2_GetNextMusicByte ; yes
-	ld [$ff00+$24], a ; store stereopanning
-	jp Music2_endchannel
-
-Music2_executemusic: ; 0x9450
-	cp $f8 ; is this command an executemusic?
-	jr nz, Music2_octave ; no
-	ld b, $0 ; yes
-	ld hl, $c036
-	add hl, bc
-	set 0, [hl]
-	jp Music2_endchannel
-
-Music2_octave: ; 0x945f
-	and $f0
-	cp $e0 ; is this command an octave?
-	jr nz, Music2_unknownsfx0x20 ; no
-	ld hl, $c0d6 ; yes
-	ld b, $0
-	add hl, bc
-	ld a, d
-	and $f
-	ld [hl], a ; store low nibble as octave
-	jp Music2_endchannel
-
-Music2_unknownsfx0x20: ; 0x9472
-	cp $20 ; is this command an unknownsfx0x20?
-	jr nz, Music2_unknownsfx0x10 ; no
-	ld a, c
-	cp CH3 ; is this a noise or sfx channel?
-	jr c, Music2_unknownsfx0x10 ; no
-	ld b, $0
-	ld hl, $c036
-	add hl, bc
-	bit 0, [hl]
-	jr nz, Music2_unknownsfx0x10 ; no
-	call Music2_notelength ; yes
-	ld d, a
-	ld b, $0
-	ld hl, $c03e
-	add hl, bc
-	ld a, [hl]
-	or d
-	ld d, a
-	ld b, $1
-	call Func_9838
-	ld [hl], d
-	call Music2_GetNextMusicByte
-	ld d, a
-	ld b, $2
-	call Func_9838
-	ld [hl], d
-	call Music2_GetNextMusicByte
-	ld e, a
-	ld a, c
-	cp CH7
-	ld a, $0
-	jr z, .sfxNoiseChannel ; only two params for noise channel
-	push de
-	call Music2_GetNextMusicByte
-	pop de
-.sfxNoiseChannel
-	ld d, a
-	push de
-	call Func_9629
-	call Func_95f8
-	pop de
-	call Func_964b
-	ret
-
-Music2_unknownsfx0x10:
-	ld a, c
-	cp CH4
-	jr c, Music2_note ; if not a sfx
-	ld a, d
-	cp $10 ; is this command a unknownsfx0x10?
-	jr nz, Music2_note ; no
-	ld b, $0
-	ld hl, $c036
-	add hl, bc
-	bit 0, [hl]
-	jr nz, Music2_note ; no
-	call Music2_GetNextMusicByte ; yes
-	ld [$ff00+$10], a
-	jp Music2_endchannel
-
-Music2_note:
-	ld a, c
-	cp CH3
-	jr nz, Music2_notelength ; if not noise channel
-	ld a, d
-	and $f0
-	cp $b0 ; is this command a dnote?
-	jr z, Music2_dnote ; yes
-	jr nc, Music2_notelength ; no
-	swap a
-	ld b, a
-	ld a, d
-	and $f
-	ld d, a
-	ld a, b
-	push de
-	push bc
-	jr asm_94fd
-
-Music2_dnote:
-	ld a, d
-	and $f
-	push af
-	push bc
-	call Music2_GetNextMusicByte ; get dnote instrument
-asm_94fd
-	ld d, a
-	ld a, [$c003]
-	and a
-	jr nz, .asm_9508
-	ld a, d
-	call Func_9876
-.asm_9508
-	pop bc
-	pop de
-
-Music2_notelength: ; 0x950a
-	ld a, d
-	push af
-	and $f
-	inc a
-	ld b, $0
-	ld e, a  ; store note length (in 16ths)
-	ld d, b
-	ld hl, $c0c6
-	add hl, bc
-	ld a, [hl]
-	ld l, b
-	call Func_9847
-	ld a, c
-	cp CH4
-	jr nc, .sfxChannel
-	ld a, [$c0e8]
-	ld d, a
-	ld a, [$c0e9]
-	ld e, a
-	jr .skip
-.sfxChannel
-	ld d, $1
-	ld e, $0
-	cp CH7
-	jr z, .skip ; if noise channel
-	call Func_9693
-	ld a, [$c0ea]
-	ld d, a
-	ld a, [$c0eb]
-	ld e, a
-.skip
-	ld a, l
-	ld b, $0
-	ld hl, $c0ce
-	add hl, bc
-	ld l, [hl]
-	call Func_9847
-	ld e, l
-	ld d, h
-	ld hl, $c0ce
-	add hl, bc
-	ld [hl], e
-	ld a, d
-	ld hl, $c0b6
-	add hl, bc
-	ld [hl], a
-	ld hl, $c036
-	add hl, bc
-	bit 0, [hl]
-	jr nz, Music2_notepitch
-	ld hl, $c02e
-	add hl, bc
-	bit 2, [hl]
-	jr z, Music2_notepitch
-	pop hl
-	ret
-
-Music2_notepitch: ; 0x9568
-	pop af
-	and $f0
-	cp $c0 ; compare to rest
-	jr nz, .notRest
-	ld a, c
-	cp CH4
-	jr nc, .sfxChannel
-	ld hl, $c02a
-	add hl, bc
-	ld a, [hl]
-	and a
-	jr nz, .done
-	; fall through
-.sfxChannel
-	ld a, c
-	cp CH2
-	jr z, .musicChannel3
-	cp CH6
-	jr nz, .notSfxChannel3
-.musicChannel3
-	ld b, $0
-	ld hl, Unknown_9b1f
-	add hl, bc
-	ld a, [$ff00+$25]
-	and [hl]
-	ld [$ff00+$25], a
-	jr .done
-.notSfxChannel3
-	ld b, $2
-	call Func_9838
-	ld a, $8
-	ld [hli], a
-	inc hl
-	ld a, $80
-	ld [hl], a
-.done
-	ret
-.notRest
-	swap a
-	ld b, $0
-	ld hl, $c0d6
-	add hl, bc
-	ld b, [hl]
-	call Func_9858
-	ld b, $0
-	ld hl, $c02e
-	add hl, bc
-	bit 4, [hl]
-	jr z, .asm_95b8
-	call Func_978f
-.asm_95b8
-	push de
-	ld a, c
-	cp CH4
-	jr nc, .skip ; if sfx channel
-	ld hl, $c02a
-	ld d, $0
-	ld e, a
-	add hl, de
-	ld a, [hl]
-	and a
-	jr nz, .asm_95cb
-	jr .skip
-.asm_95cb
-	pop de
-	ret
-.skip
-	ld b, $0
-	ld hl, $c0de
-	add hl, bc
-	ld d, [hl]
-	ld b, $2
-	call Func_9838
-	ld [hl], d
-	call Func_9629
-	call Func_95f8
-	pop de
-	ld b, $0
-	ld hl, $c02e
-	add hl, bc
-	bit 0, [hl]
-	jr z, .asm_95ef
-	inc e
-	jr nc, .asm_95ef
-	inc d
-.asm_95ef
-	ld hl, $c066
-	add hl, bc
-	ld [hl], e
-	call Func_964b
-	ret
-
-Func_95f8: ; 0x95f8
-	ld b, $0
-	ld hl, Unknown_9b27
-	add hl, bc
-	ld a, [$ff00+$25]
-	or [hl]
-	ld d, a
-	ld a, c
-	cp CH7
-	jr z, .sfxNoiseChannel
-	cp CH4
-	jr nc, .skip ; if sfx channel
-	ld hl, $c02a
-	add hl, bc
-	ld a, [hl]
-	and a
-	jr nz, .skip
-.sfxNoiseChannel
-	ld a, [$c004]
-	ld hl, Unknown_9b27
-	add hl, bc
-	and [hl]
-	ld d, a
-	ld a, [$ff00+$25]
-	ld hl, Unknown_9b1f
-	add hl, bc
-	and [hl]
-	or d
-	ld d, a
-.skip
-	ld a, d
-	ld [$ff00+$25], a
-	ret
-
-Func_9629: ; 0x9629
-	ld b, $0
-	ld hl, $c0b6
-	add hl, bc
-	ld d, [hl]
-	ld a, c
-	cp CH2
-	jr z, .channel3 ; if music channel 3
-	cp CH6
-	jr z, .channel3 ; if sfx channel 3
-	ld a, d
-	and $3f
-	ld d, a
-	ld hl, $c03e
-	add hl, bc
-	ld a, [hl]
-	or d
-	ld d, a
-.channel3
-	ld b, $1
-	call Func_9838
-	ld [hl], d
-	ret
-
-Func_964b: ; 0x964b
-	ld a, c
-	cp CH2
-	jr z, .channel3
-	cp CH6
-	jr nz, .notSfxChannel3
-	; fall through
-.channel3
-	push de
-	ld de, $c0e6
-	cp CH2
-	jr z, .musicChannel3
-	ld de, $c0e7
-.musicChannel3
-	ld a, [de]
-	add a
-	ld d, $0
-	ld e, a
-	ld hl, Music2_Channel3DutyPointers
-	add hl, de
-	ld e, [hl]
-	inc hl
-	ld d, [hl]
-	ld hl, $ff30
-	ld b, $f
-	ld a, $0
-	ld [$ff00+$1a], a
-.loop
-	ld a, [de]
-	inc de
-	ld [hli], a
-	ld a, b
-	dec b
-	and a
-	jr nz, .loop
-	ld a, $80
-	ld [$ff00+$1a], a
-	pop de
-.notSfxChannel3
-	ld a, d
-	or $80
-	and $c7
-	ld d, a
-	ld b, $3
-	call Func_9838
-	ld [hl], e
-	inc hl
-	ld [hl], d
-	call Func_96b5
-	ret
-
-Func_9693: ; 0x9693
-	call Func_96e5
-	jr nc, .asm_96ab
-	ld d, $0
-	ld a, [$c0f2]
-	add $80
-	jr nc, .asm_96a2
-	inc d
-.asm_96a2
-	ld [$c0eb], a
-	ld a, d
-	ld [$c0ea], a
-	jr .asm_96b4
-.asm_96ab
-	xor a
-	ld [$c0eb], a
-	ld a, $1
-	ld [$c0ea], a
-.asm_96b4
-	ret
-
-Func_96b5: ; 0x96b5
-	call Func_96e5
-	jr nc, .asm_96c6
-	ld a, [$c0f1]
-	add e
-	jr nc, .asm_96c1
-	inc d
-.asm_96c1
-	dec hl
-	ld e, a
-	ld [hl], e
-	inc hl
-	ld [hl], d
-.asm_96c6
-	ret
-
-Func_96c7: ; 0x96c7
-	call Func_96e5
-	jr nc, .asm_96e2
-	ld hl, $c006
-	ld e, c
-	ld d, $0
-	sla e
-	rl d
-	add hl, de
-	ld a, [hl]
-	sub $1
-	ld [hl], a
-	inc hl
-	ld a, [hl]
-	sbc $0
-	ld [hl], a
-	scf
-	ret
-.asm_96e2
-	scf
-	ccf
-	ret
-
-Func_96e5: ; 0x96e5
-	ld a, [$c02a]
-	cp $14
-	jr nc, .asm_96ee
-	jr .asm_96f4
-.asm_96ee
-	cp $86
-	jr z, .asm_96f4
-	jr c, .asm_96f7
-.asm_96f4
-	scf
-	ccf
-	ret
-.asm_96f7
-	scf
-	ret
-
-Music2_ApplyPitchBend: ; 0x96f9
-	ld hl, $c02e
-	add hl, bc
-	bit 5, [hl]
-	jp nz, .asm_9740
-	ld hl, $c09e
-	add hl, bc
-	ld e, [hl]
-	ld hl, $c096
-	add hl, bc
-	ld d, [hl]
-	ld hl, $c07e
-	add hl, bc
-	ld l, [hl]
-	ld h, b
-	add hl, de
-	ld d, h
-	ld e, l
-	ld hl, $c08e
-	add hl, bc
-	push hl
-	ld hl, $c086
-	add hl, bc
-	ld a, [hl]
-	pop hl
-	add [hl]
-	ld [hl], a
-	ld a, $0
-	adc e
-	ld e, a
-	ld a, $0
-	adc d
-	ld d, a
-	ld hl, $c0a6
-	add hl, bc
-	ld a, [hl]
-	cp d
-	jp c, .asm_9786
-	jr nz, .asm_9773
-	ld hl, $c0ae
-	add hl, bc
-	ld a, [hl]
-	cp e
-	jp c, .asm_9786
-	jr .asm_9773
-.asm_9740
-	ld hl, $c09e
-	add hl, bc
-	ld a, [hl]
-	ld hl, $c096
-	add hl, bc
-	ld d, [hl]
-	ld hl, $c07e
-	add hl, bc
-	ld e, [hl]
-	sub e
-	ld e, a
-	ld a, d
-	sbc b
-	ld d, a
-	ld hl, $c086
-	add hl, bc
-	ld a, [hl]
-	add a
-	ld [hl], a
-	ld a, e
-	sbc b
-	ld e, a
-	ld a, d
-	sbc b
-	ld d, a
-	ld hl, $c0a6
-	add hl, bc
-	ld a, d
-	cp [hl]
-	jr c, .asm_9786
-	jr nz, .asm_9773
-	ld hl, $c0ae
-	add hl, bc
-	ld a, e
-	cp [hl]
-	jr c, .asm_9786
-.asm_9773
-	ld hl, $c09e
-	add hl, bc
-	ld [hl], e
-	ld hl, $c096
-	add hl, bc
-	ld [hl], d
-	ld b, $3
-	call Func_9838
-	ld a, e
-	ld [hli], a
-	ld [hl], d
-	ret
-.asm_9786
-	ld hl, $c02e
-	add hl, bc
-	res 4, [hl]
-	res 5, [hl]
-	ret
-
-Func_978f: ; 0x978f
-	ld hl, $c096
-	add hl, bc
-	ld [hl], d
-	ld hl, $c09e
-	add hl, bc
-	ld [hl], e
-	ld hl, $c0b6
-	add hl, bc
-	ld a, [hl]
-	ld hl, $c076
-	add hl, bc
-	sub [hl]
-	jr nc, .asm_97a7
-	ld a, $1
-.asm_97a7
-	ld [hl], a
-	ld hl, $c0ae
-	add hl, bc
-	ld a, e
-	sub [hl]
-	ld e, a
-	ld a, d
-	sbc b
-	ld hl, $c0a6
-	add hl, bc
-	sub [hl]
-	jr c, .asm_97c3
-	ld d, a
-	ld b, $0
-	ld hl, $c02e
-	add hl, bc
-	set 5, [hl]
-	jr .asm_97e6
-.asm_97c3
-	ld hl, $c096
-	add hl, bc
-	ld d, [hl]
-	ld hl, $c09e
-	add hl, bc
-	ld e, [hl]
-	ld hl, $c0ae
-	add hl, bc
-	ld a, [hl]
-	sub e
-	ld e, a
-	ld a, d
-	sbc b
-	ld d, a
-	ld hl, $c0a6
-	add hl, bc
-	ld a, [hl]
-	sub d
-	ld d, a
-	ld b, $0
-	ld hl, $c02e
-	add hl, bc
-	res 5, [hl]
-.asm_97e6
-	ld hl, $c076
-	add hl, bc
-.asm_97ea
-	inc b
-	ld a, e
-	sub [hl]
-	ld e, a
-	jr nc, .asm_97ea
-	ld a, d
-	and a
-	jr z, .asm_97f8
-	dec a
-	ld d, a
-	jr .asm_97ea
-.asm_97f8
-	ld a, e
-	add [hl]
-	ld d, b
-	ld b, $0
-	ld hl, $c07e
-	add hl, bc
-	ld [hl], d
-	ld hl, $c086
-	add hl, bc
-	ld [hl], a
-	ld hl, $c08e
-	add hl, bc
-	ld [hl], a
-	ret
-
-Music2_ApplyDutyCycle: ; 0x980d
-	ld b, $0
-	ld hl, $c046
-	add hl, bc
-	ld a, [hl]
-	rlca
-	rlca
-	ld [hl], a
-	and $c0
-	ld d, a
-	ld b, $1
-	call Func_9838
-	ld a, [hl]
-	and $3f
-	or d
-	ld [hl], a
-	ret
-
-Music2_GetNextMusicByte: ; 0x9825
-	ld d, $0
-	ld a, c
-	add a
-	ld e, a
-	ld hl, $c006
-	add hl, de
-	ld a, [hli]
-	ld e, a
-	ld a, [hld]
-	ld d, a
-	ld a, [de] ; get next music command
-	inc de
-	ld [hl], e ; store address of next command
-	inc hl
-	ld [hl], d
-	ret
-
-Func_9838: ; 0x9838
-	ld a, c
-	ld hl, Unknown_9b17
-	add l
-	jr nc, .noCarry
-	inc h
-.noCarry
-	ld l, a
-	ld a, [hl]
-	add b
-	ld l, a
-	ld h, $ff
-	ret
-
-Func_9847: ; 0x9847
-	ld h, $0
-.loop
-	srl a
-	jr nc, .noCarry
-	add hl, de
-.noCarry
-	sla e
-	rl d
-	and a
-	jr z, .done
-	jr .loop
-.done
-	ret
-
-Func_9858: ; 0x9858
-	ld h, $0
-	ld l, a
-	add hl, hl
-	ld d, h
-	ld e, l
-	ld hl, Unknown_9b2f
-	add hl, de
-	ld e, [hl]
-	inc hl
-	ld d, [hl]
-	ld a, b
-.loop
-	cp $7
-	jr z, .done
-	sra d
-	rr e
-	inc a
-	jr .loop
-.done
-	ld a, $8
-	add d
-	ld d, a
-	ret
-
-Func_9876: ; 0x9876
-	ld [$c001], a
-	cp $ff
-	jp z, Func_9a34
-	cp $b9
-	jp z, Func_994e
-	jp c, Func_994e
-	cp $fe
-	jr z, .asm_988d
-	jp nc, Func_994e
-.asm_988d
-	xor a
-	ld [$c000], a
-	ld [$c003], a
-	ld [$c0e9], a
-	ld [$c0e6], a
-	ld [$c0e7], a
-	ld d, $8
-	ld hl, $c016
-	call FillMusicRAM2
-	ld hl, $c006
-	call FillMusicRAM2
-	ld d, $4
-	ld hl, $c026
-	call FillMusicRAM2
-	ld hl, $c02e
-	call FillMusicRAM2
-	ld hl, $c03e
-	call FillMusicRAM2
-	ld hl, $c046
-	call FillMusicRAM2
-	ld hl, $c04e
-	call FillMusicRAM2
-	ld hl, $c056
-	call FillMusicRAM2
-	ld hl, $c05e
-	call FillMusicRAM2
-	ld hl, $c066
-	call FillMusicRAM2
-	ld hl, $c06e
-	call FillMusicRAM2
-	ld hl, $c036
-	call FillMusicRAM2
-	ld hl, $c076
-	call FillMusicRAM2
-	ld hl, $c07e
-	call FillMusicRAM2
-	ld hl, $c086
-	call FillMusicRAM2
-	ld hl, $c08e
-	call FillMusicRAM2
-	ld hl, $c096
-	call FillMusicRAM2
-	ld hl, $c09e
-	call FillMusicRAM2
-	ld hl, $c0a6
-	call FillMusicRAM2
-	ld hl, $c0ae
-	call FillMusicRAM2
-	ld a, $1
-	ld hl, $c0be
-	call FillMusicRAM2
-	ld hl, $c0b6
-	call FillMusicRAM2
-	ld hl, $c0c6
-	call FillMusicRAM2
-	ld [$c0e8], a
-	ld a, $ff
-	ld [$c004], a
-	xor a
-	ld [$ff00+$24], a
-	ld a, $8
-	ld [$ff00+$10], a
-	ld a, $0
-	ld [$ff00+$25], a
-	xor a
-	ld [$ff00+$1a], a
-	ld a, $80
-	ld [$ff00+$1a], a
-	ld a, $77
-	ld [$ff00+$24], a
-	jp Func_9a8f
-
-Func_994e: ; 0x994e
-	ld l, a
-	ld e, a
-	ld h, $0
-	ld d, h
-	add hl, hl
-	add hl, de
-	ld de, SFX_Headers_02
-	add hl, de
-	ld a, h
-	ld [$c0ec], a
-	ld a, l
-	ld [$c0ed], a
-	ld a, [hl]
-	and $c0
-	rlca
-	rlca
-	ld c, a
-.asm_9967
-	ld d, c
-	ld a, c
-	add a
-	add c
-	ld c, a
-	ld b, $0
-	ld a, [$c0ec]
-	ld h, a
-	ld a, [$c0ed]
-	ld l, a
-	add hl, bc
-	ld c, d
-	ld a, [hl]
-	and $f
-	ld e, a
-	ld d, $0
-	ld hl, $c026
-	add hl, de
-	ld a, [hl]
-	and a
-	jr z, .asm_99a3
-	ld a, e
-	cp $7
-	jr nz, .asm_999a
-	ld a, [$c001]
-	cp $14
-	jr nc, .asm_9993
-	ret
-.asm_9993
-	ld a, [hl]
-	cp $14
-	jr z, .asm_99a3
-	jr c, .asm_99a3
-.asm_999a
-	ld a, [$c001]
-	cp [hl]
-	jr z, .asm_99a3
-	jr c, .asm_99a3
-	ret
-.asm_99a3
-	xor a
-	push de
-	ld h, d
-	ld l, e
-	add hl, hl
-	ld d, h
-	ld e, l
-	ld hl, $c016
-	add hl, de
-	ld [hli], a
-	ld [hl], a
-	ld hl, $c006
-	add hl, de
-	ld [hli], a
-	ld [hl], a
-	pop de
-	ld hl, $c026
-	add hl, de
-	ld [hl], a
-	ld hl, $c02e
-	add hl, de
-	ld [hl], a
-	ld hl, $c03e
-	add hl, de
-	ld [hl], a
-	ld hl, $c046
-	add hl, de
-	ld [hl], a
-	ld hl, $c04e
-	add hl, de
-	ld [hl], a
-	ld hl, $c056
-	add hl, de
-	ld [hl], a
-	ld hl, $c05e
-	add hl, de
-	ld [hl], a
-	ld hl, $c066
-	add hl, de
-	ld [hl], a
-	ld hl, $c06e
-	add hl, de
-	ld [hl], a
-	ld hl, $c076
-	add hl, de
-	ld [hl], a
-	ld hl, $c07e
-	add hl, de
-	ld [hl], a
-	ld hl, $c086
-	add hl, de
-	ld [hl], a
-	ld hl, $c08e
-	add hl, de
-	ld [hl], a
-	ld hl, $c096
-	add hl, de
-	ld [hl], a
-	ld hl, $c09e
-	add hl, de
-	ld [hl], a
-	ld hl, $c0a6
-	add hl, de
-	ld [hl], a
-	ld hl, $c0ae
-	add hl, de
-	ld [hl], a
-	ld hl, $c036
-	add hl, de
-	ld [hl], a
-	ld a, $1
-	ld hl, $c0be
-	add hl, de
-	ld [hl], a
-	ld hl, $c0b6
-	add hl, de
-	ld [hl], a
-	ld hl, $c0c6
-	add hl, de
-	ld [hl], a
-	ld a, e
-	cp $4
-	jr nz, .asm_9a2b
-	ld a, $8
-	ld [$ff00+$10], a
-.asm_9a2b
-	ld a, c
-	and a
-	jp z, Func_9a8f
-	dec c
-	jp .asm_9967
-
-Func_9a34: ; 0x9a34
-	ld a, $80
-	ld [$ff00+$26], a
-	ld [$ff00+$1a], a
-	xor a
-	ld [$ff00+$25], a
-	ld [$ff00+$1c], a
-	ld a, $8
-	ld [$ff00+$10], a
-	ld [$ff00+$12], a
-	ld [$ff00+$17], a
-	ld [$ff00+$21], a
-	ld a, $40
-	ld [$ff00+$14], a
-	ld [$ff00+$19], a
-	ld [$ff00+$23], a
-	ld a, $77
-	ld [$ff00+$24], a
-	xor a
-	ld [$c000], a
-	ld [$c003], a
-	ld [$c002], a
-	ld [$c0e9], a
-	ld [$c0eb], a
-	ld [$c0e6], a
-	ld [$c0e7], a
-	ld d, $a0
-	ld hl, $c006
-	call FillMusicRAM2
-	ld a, $1
-	ld d, $18
-	ld hl, $c0b6
-	call FillMusicRAM2
-	ld [$c0e8], a
-	ld [$c0ea], a
-	ld a, $ff
-	ld [$c004], a
-	ret
-
-; fills d bytes at hl with a
-FillMusicRAM2: ; 0x9a89
-	ld b, d
-.loop
-	ld [hli], a
-	dec b
-	jr nz, .loop
-	ret
-
-Func_9a8f: ; 0x9a8f
-	ld a, [$c001]
-	ld l, a
-	ld e, a
-	ld h, $0
-	ld d, h
-	add hl, hl
-	add hl, de
-	ld de, SFX_Headers_02
-	add hl, de
-	ld e, l
-	ld d, h
-	ld hl, $c006
-	ld a, [de] ; get channel number
-	ld b, a
-	rlca
-	rlca
-	and $3
-	ld c, a
-	ld a, b
-	and $f
-	ld b, c
-	inc b
-	inc de
-	ld c, $0
-.asm_9ab1
-	cp c
-	jr z, .asm_9ab9
-	inc c
-	inc hl
-	inc hl
-	jr .asm_9ab1
-.asm_9ab9
-	push hl
-	push bc
-	push af
-	ld b, $0
-	ld c, a
-	ld hl, $c026
-	add hl, bc
-	ld a, [$c001]
-	ld [hl], a
-	pop af
-	cp $3
-	jr c, .asm_9ad2
-	ld hl, $c02e
-	add hl, bc
-	set 2, [hl]
-.asm_9ad2
-	pop bc
-	pop hl
-	ld a, [de] ; get channel pointer
-	ld [hli], a
-	inc de
-	ld a, [de]
-	ld [hli], a
-	inc de
-	inc c
-	dec b
-	ld a, b
-	and a
-	ld a, [de]
-	inc de
-	jr nz, .asm_9ab1
-	ld a, [$c001]
-	cp $14
-	jr nc, .asm_9aeb
-	jr .asm_9b15
-.asm_9aeb
-	ld a, [$c001]
-	cp $86
-	jr z, .asm_9b15
-	jr c, .asm_9af6
-	jr .asm_9b15
-.asm_9af6
-	ld hl, $c02a
-	ld [hli], a
-	ld [hli], a
-	ld [hli], a
-	ld [hl], a
-	ld hl, $c012 ; sfx noise channel pointer
-	ld de, Noise2_endchannel
-	ld [hl], e
-	inc hl
-	ld [hl], d ; overwrite pointer to point to endchannel
-	ld a, [$c005]
-	and a
-	jr nz, .asm_9b15
-	ld a, [$ff00+$24]
-	ld [$c005], a
-	ld a, $77
-	ld [$ff00+$24], a
-.asm_9b15
-	ret
-
-Noise2_endchannel: ; 0x9b16
-	endchannel
-
-Unknown_9b17: ; 0x9b17
-	db $10, $15, $1A, $1F ; channels 0-3
-	db $10, $15, $1A, $1F ; channels 4-7
-
-Unknown_9b1f: ; 0x9b1f
-	db $EE, $DD, $BB, $77 ; channels 0-3
-	db $EE, $DD, $BB, $77 ; channels 4-7
-
-Unknown_9b27: ; 0x9b27
-	db $11, $22, $44, $88 ; channels 0-3
-	db $11, $22, $44, $88 ; channels 4-7
-
-Unknown_9b2f: ; 0x9b2f
-	dw $F82C
-	dw $F89D
-	dw $F907
-	dw $F96B
-	dw $F9CA
-	dw $FA23
-	dw $FA77
-	dw $FAC7
-	dw $FB12
-	dw $FB58
-	dw $FB9B
-	dw $FBDA
-
 ; an alternate start for MeetRival which has a different first measure
 Music_RivalAlternateStart: ; 0x9b47
 	ld c, BANK(Music_MeetRival)
@@ -45308,1736 +43633,10 @@
 Unknown_21878: ; 21878 (8:5878)
 	db $FD
 
-Func_21879: ; 21879 (8:5879)
-	ld c, CH0
-.loop
-	ld b, $0
-	ld hl, $c026
-	add hl, bc
-	ld a, [hl]
-	and a
-	jr z, .nextChannel
-	ld a, c
-	cp CH4
-	jr nc, .applyAffects ; if sfx channel
-	ld a, [$c002]
-	and a
-	jr z, .applyAffects
-	bit 7, a
-	jr nz, .nextChannel
-	set 7, a
-	ld [$c002], a
-	xor a
-	ld [$FF00+$25], a
-	ld [$FF00+$1a], a
-	ld a, $80
-	ld [$FF00+$1a], a
-	jr .nextChannel
-.applyAffects
-	call Music8_ApplyMusicAffects
-.nextChannel
-	ld a, c
-	inc c
-	cp CH7
-	jr nz, .loop
-	ret
 
-; this routine checks flags for music effects currently applied
-; to the channel and calls certain functions based on flags.
-; known flags for $c02e:
-;	1: call has been used
-;	3: a toggle used only by this routine for vibrato
-;	4: pitchbend flag
-;	6: dutycycle flag
-Music8_ApplyMusicAffects: ; 218ae (8:58ae)
-	ld b, $0
-	ld hl, $c0b6 ; delay unitl next note
-	add hl, bc
-	ld a, [hl]
-	cp $1 ; if the delay is 1, play next note
-	jp z, Music8_PlayNextNote
-	dec a ; otherwise, decrease the delay timer
-	ld [hl], a
-	ld a, c
-	cp CH4
-	jr nc, .startChecks ; if a sfx channel
-	ld hl, $c02a
-	add hl, bc
-	ld a, [hl]
-	and a
-	jr z, .startChecks
-	ret
-.startChecks
-	ld hl, $c02e
-	add hl, bc
-	bit 6, [hl] ; dutycycle
-	jr z, .checkForExecuteMusic
-	call Music8_ApplyDutyCycle
-.checkForExecuteMusic
-	ld b, $0
-	ld hl, $c036
-	add hl, bc
-	bit 0, [hl]
-	jr nz, .checkForPitchBend
-	ld hl, $c02e
-	add hl, bc
-	bit 2, [hl]
-	jr nz, .disablePitchBendVibrato
-.checkForPitchBend
-	ld hl, $c02e
-	add hl, bc
-	bit 4, [hl] ; pitchbend
-	jr z, .checkVibratoDelay
-	jp Music8_ApplyPitchBend
-.checkVibratoDelay
-	ld hl, $c04e ; vibrato delay
-	add hl, bc
-	ld a, [hl]
-	and a ; check if delay is over
-	jr z, .checkForVibrato
-	dec [hl] ; otherwise, dec delay
-.disablePitchBendVibrato
-	ret
-.checkForVibrato
-	ld hl, $c056 ; vibrato rate
-	add hl, bc
-	ld a, [hl]
-	and a
-	jr nz, .vibrato
-	ret ; no vibrato
-.vibrato
-	ld d, a
-	ld hl, $c05e
-	add hl, bc
-	ld a, [hl]
-	and $f
-	and a
-	jr z, .vibratoAlreadyDone
-	dec [hl] ; apply vibrato pitch change
-	ret
-.vibratoAlreadyDone
-	ld a, [hl]
-	swap [hl]
-	or [hl]
-	ld [hl], a ; reset the vibrato value and start again
-	ld hl, $c066
-	add hl, bc
-	ld e, [hl] ; get note pitch
-	ld hl, $c02e
-	add hl, bc
-	bit 3, [hl] ; this is the only code that sets/resets bit three so
-	jr z, .unset ; it continuously alternates which path it takes
-	res 3, [hl]
-	ld a, d
-	and $f
-	ld d, a
-	ld a, e
-	sub d
-	jr nc, .noCarry
-	ld a, $0
-.noCarry
-	jr .done
-.unset
-	set 3, [hl]
-	ld a, d
-	and $f0
-	swap a
-	add e
-	jr nc, .done
-	ld a, $ff
-.done
-	ld d, a
-	ld b, $3
-	call Func_21ff7
-	ld [hl], d
-	ret
+INCLUDE "audio/engine_2.asm"
 
-; this routine executes all music commands that take up no time,
-; like tempo changes, duty changes etc. and doesn't return
-; until the first note is reached
-Music8_PlayNextNote: ; 21946 (8:5946)
-	ld hl, $c06e
-	add hl, bc
-	ld a, [hl]
-	ld hl, $c04e
-	add hl, bc
-	ld [hl], a
-	ld hl, $c02e
-	add hl, bc
-	res 4, [hl]
-	res 5, [hl]
-	ld a, c
-	cp CH4
-	jr nz, .beginChecks
-	ld a, [$d083]
-	bit 7, a
-	ret nz
-.beginChecks
-	call Music8_endchannel
-	ret
 
-Music8_endchannel: ; 21967 (8:5967)
-	call Music8_GetNextMusicByte
-	ld d, a
-	cp $ff ; is this command an endchannel?
-	jp nz, Music8_callchannel ; no
-	ld b, $0 ; yes
-	ld hl, $c02e
-	add hl, bc
-	bit 1, [hl]
-	jr nz, .returnFromCall
-	ld a, c
-	cp CH3
-	jr nc, .noiseOrSfxChannel
-	jr .asm_219c0
-.noiseOrSfxChannel
-	res 2, [hl]
-	ld hl, $c036
-	add hl, bc
-	res 0, [hl]
-	cp CH6
-	jr nz, .notSfxChannel3
-	ld a, $0
-	ld [$FF00+$1a], a
-	ld a, $80
-	ld [$FF00+$1a], a
-.notSfxChannel3
-	jr nz, .asm_219a3
-	ld a, [$c003]
-	and a
-	jr z, .asm_219a3
-	xor a
-	ld [$c003], a
-	jr .asm_219c0
-.asm_219a3
-	jr .asm_219c9
-.returnFromCall
-	res 1, [hl]
-	ld d, $0
-	ld a, c
-	add a
-	ld e, a
-	ld hl, $c006
-	add hl, de
-	push hl ; store current channel address
-	ld hl, $c016
-	add hl, de
-	ld e, l
-	ld d, h
-	pop hl
-	ld a, [de]
-	ld [hli], a
-	inc de
-	ld a, [de]
-	ld [hl], a ; loads channel address to return to
-	jp Music8_endchannel
-.asm_219c0
-	ld hl, Unknown_222de
-	add hl, bc
-	ld a, [$FF00+$25]
-	and [hl]
-	ld [$FF00+$25], a
-.asm_219c9
-	ld a, [$c02a]
-	cp $14
-	jr nc, .asm_219d2
-	jr .asm_219ef
-.asm_219d2
-	ld a, [$c02a]
-	cp $86
-	jr z, .asm_219ef
-	jr c, .asm_219dd
-	jr .asm_219ef
-.asm_219dd
-	ld a, c
-	cp CH4
-	jr z, .asm_219e6
-	call Func_21e6d
-	ret c
-.asm_219e6
-	ld a, [$c005]
-	ld [$FF00+$24], a
-	xor a
-	ld [$c005], a
-.asm_219ef
-	ld hl, $c026
-	add hl, bc
-	ld [hl], b
-	ret
-
-Music8_callchannel: ; 219f5 (8:59f5)
-	cp $fd ; is this command a callchannel?
-	jp nz, Music8_loopchannel ; no
-	call Music8_GetNextMusicByte ; yes
-	push af
-	call Music8_GetNextMusicByte
-	ld d, a
-	pop af
-	ld e, a
-	push de ; store pointer
-	ld d, $0
-	ld a, c
-	add a
-	ld e, a
-	ld hl, $c006
-	add hl, de
-	push hl
-	ld hl, $c016
-	add hl, de
-	ld e, l
-	ld d, h
-	pop hl
-	ld a, [hli]
-	ld [de], a
-	inc de
-	ld a, [hld]
-	ld [de], a ; copy current channel address
-	pop de
-	ld [hl], e
-	inc hl
-	ld [hl], d ; overwrite current address with pointer
-	ld b, $0
-	ld hl, $c02e
-	add hl, bc
-	set 1, [hl] ; set the call flag
-	jp Music8_endchannel
-
-Music8_loopchannel: ; 21a2a (8:5a2a)
-	cp $fe ; is this command a loopchannel?
-	jp nz, Music8_notetype ; no
-	call Music8_GetNextMusicByte ; yes
-	ld e, a
-	and a
-	jr z, .infiniteLoop
-	ld b, $0
-	ld hl, $c0be
-	add hl, bc
-	ld a, [hl]
-	cp e
-	jr nz, .loopAgain
-	ld a, $1 ; if no more loops to make,
-	ld [hl], a
-	call Music8_GetNextMusicByte ; skip pointer
-	call Music8_GetNextMusicByte
-	jp Music8_endchannel
-.loopAgain ; inc loop count
-	inc a
-	ld [hl], a
-	; fall through
-.infiniteLoop ; overwrite current address with pointer
-	call Music8_GetNextMusicByte
-	push af
-	call Music8_GetNextMusicByte
-	ld b, a
-	ld d, $0
-	ld a, c
-	add a
-	ld e, a
-	ld hl, $c006
-	add hl, de
-	pop af
-	ld [hli], a
-	ld [hl], b
-	jp Music8_endchannel
-
-Music8_notetype: ; 21a65 (8:5a65)
-	and $f0
-	cp $d0 ; is this command a notetype?
-	jp nz, Music8_togglecall ; no
-	ld a, d ; yes
-	and $f
-	ld b, $0
-	ld hl, $c0c6
-	add hl, bc
-	ld [hl], a ; store low nibble as speed
-	ld a, c
-	cp CH3
-	jr z, .noiseChannel ; noise channel has 0 params
-	call Music8_GetNextMusicByte
-	ld d, a
-	ld a, c
-	cp CH2
-	jr z, .musicChannel3
-	cp CH6
-	jr nz, .notChannel3
-	ld hl, $c0e7
-	jr .sfxChannel3
-.musicChannel3
-	ld hl, $c0e6
-.sfxChannel3
-	ld a, d
-	and $f
-	ld [hl], a ; store low nibble of param as duty
-	ld a, d
-	and $30
-	sla a
-	ld d, a
-	; fall through
-
-	; if channel 3, store high nibble as volume
-	; else, store volume (high nibble) and fade (low nibble)
-.notChannel3
-	ld b, $0
-	ld hl, $c0de
-	add hl, bc
-	ld [hl], d
-.noiseChannel
-	jp Music8_endchannel
-
-Music8_togglecall: ; 21aa4 (8:5aa4)
-	ld a, d
-	cp $e8 ; is this command an togglecall?
-	jr nz, Music8_vibrato ; no
-	ld b, $0 ; yes
-	ld hl, $c02e
-	add hl, bc
-	ld a, [hl]
-	xor $1
-	ld [hl], a ; flip bit 0 of $c02e (toggle returning from call)
-	jp Music8_endchannel
-
-Music8_vibrato: ; 21ab6 (8:5ab6)
-	cp $ea ; is this command a vibrato?
-	jr nz, Music8_pitchbend ; no
-	call Music8_GetNextMusicByte ; yes
-	ld b, $0
-	ld hl, $c04e
-	add hl, bc
-	ld [hl], a ; store delay 
-	ld hl, $c06e
-	add hl, bc
-	ld [hl], a ; store delay 
-	call Music8_GetNextMusicByte
-	ld d, a
-	and $f0
-	swap a
-	ld b, $0
-	ld hl, $c056
-	add hl, bc
-	srl a
-	ld e, a
-	adc b
-	swap a
-	or e
-	ld [hl], a ; store rate as both high and low nibbles
-	ld a, d
-	and $f
-	ld d, a
-	ld hl, $c05e
-	add hl, bc
-	swap a
-	or d
-	ld [hl], a ; store depth as both high and low nibbles
-	jp Music8_endchannel
-
-Music8_pitchbend: ; 21aee (8:5aee)
-	cp $eb ; is this command a pitchbend?
-	jr nz, Music8_duty ; no
-	call Music8_GetNextMusicByte ; yes
-	ld b, $0
-	ld hl, $c076
-	add hl, bc
-	ld [hl], a ; store first param
-	call Music8_GetNextMusicByte
-	ld d, a
-	and $f0
-	swap a
-	ld b, a
-	ld a, d
-	and $f
-	call Func_22017
-	ld b, $0
-	ld hl, $c0a6
-	add hl, bc
-	ld [hl], d ; store unknown part of second param
-	ld hl, $c0ae
-	add hl, bc
-	ld [hl], e ; store unknown part of second param
-	ld b, $0
-	ld hl, $c02e
-	add hl, bc
-	set 4, [hl] ; set pitchbend flag
-	call Music8_GetNextMusicByte
-	ld d, a
-	jp Music8_notelength
-
-Music8_duty: ; 21b26 (8:5b26)
-	cp $ec ; is this command a duty?
-	jr nz, Music8_tempo ; no
-	call Music8_GetNextMusicByte ; yes
-	rrca
-	rrca
-	and $c0
-	ld b, $0
-	ld hl, $c03e
-	add hl, bc
-	ld [hl], a ; store duty
-	jp Music8_endchannel
-
-Music8_tempo: ; 21b3b (8:5b3b)
-	cp $ed ; is this command a tempo?
-	jr nz, Music8_unknownmusic0xee ; no
-	ld a, c ; yes
-	cp CH4
-	jr nc, .sfxChannel
-	call Music8_GetNextMusicByte
-	ld [$c0e8], a ; store first param
-	call Music8_GetNextMusicByte
-	ld [$c0e9], a ; store second param
-	xor a
-	ld [$c0ce], a ; clear RAM
-	ld [$c0cf], a
-	ld [$c0d0], a
-	ld [$c0d1], a
-	jr .musicChannelDone
-.sfxChannel
-	call Music8_GetNextMusicByte
-	ld [$c0ea], a ; store first param
-	call Music8_GetNextMusicByte
-	ld [$c0eb], a ; store second param
-	xor a
-	ld [$c0d2], a ; clear RAM
-	ld [$c0d3], a
-	ld [$c0d4], a
-	ld [$c0d5], a
-.musicChannelDone
-	jp Music8_endchannel
-
-Music8_unknownmusic0xee: ; 21b7b (8:5b7b)
-	cp $ee ; is this command an unknownmusic0xee?
-	jr nz, Music8_unknownmusic0xef ; no
-	call Music8_GetNextMusicByte ; yes
-	ld [$c004], a ; store first param
-	jp Music8_endchannel
-
-; this appears to never be used
-Music8_unknownmusic0xef: ; 21b88 (8:5b88)
-	cp $ef ; is this command an unknownmusic0xef?
-	jr nz, Music8_dutycycle ; no
-	call Music8_GetNextMusicByte ; yes
-	push bc
-	call Func_22035
-	pop bc
-	ld a, [$c003]
-	and a
-	jr nz, .skip
-	ld a, [$c02d]
-	ld [$c003], a
-	xor a
-	ld [$c02d], a
-.skip
-	jp Music8_endchannel
-
-Music8_dutycycle: ; 21ba7 (8:5ba7)
-	cp $fc ; is this command a dutycycle?
-	jr nz, Music8_stereopanning ; no
-	call Music8_GetNextMusicByte ; yes
-	ld b, $0
-	ld hl, $c046
-	add hl, bc
-	ld [hl], a ; store full cycle
-	and $c0
-	ld hl, $c03e
-	add hl, bc
-	ld [hl], a ; store first duty
-	ld hl, $c02e
-	add hl, bc
-	set 6, [hl] ; set dutycycle flag
-	jp Music8_endchannel
-
-Music8_stereopanning: ; 21bc5 (8:5bc5)
-	cp $f0 ; is this command a stereopanning?
-	jr nz, Music8_executemusic ; no
-	call Music8_GetNextMusicByte ; yes
-	ld [$FF00+$24], a
-	jp Music8_endchannel
-
-Music8_executemusic: ; 21bd1 (8:5bd1)
-	cp $f8 ; is this command an executemusic?
-	jr nz, Music8_octave ; no
-	ld b, $0 ; yes
-	ld hl, $c036
-	add hl, bc
-	set 0, [hl]
-	jp Music8_endchannel
-
-Music8_octave: ; 21be0 (8:5be0)
-	and $f0
-	cp $e0 ; is this command an octave?
-	jr nz, Music8_unknownsfx0x20 ; no
-	ld hl, $c0d6 ; yes
-	ld b, $0
-	add hl, bc
-	ld a, d
-	and $f
-	ld [hl], a ; store low nibble as octave
-	jp Music8_endchannel
-
-Music8_unknownsfx0x20: ; 21bf3
-	cp $20 ; is this command an unknownsfx0x20?
-	jr nz, Music8_unknownsfx0x10 ; no
-	ld a, c
-	cp CH3 ; is this a noise or sfx channel?
-	jr c, Music8_unknownsfx0x10 ; no
-	ld b, $0
-	ld hl, $c036
-	add hl, bc
-	bit 0, [hl]
-	jr nz, Music8_unknownsfx0x10 ; no
-	call Music8_notelength
-	ld d, a
-	ld b, $0
-	ld hl, $c03e
-	add hl, bc
-	ld a, [hl]
-	or d
-	ld d, a
-	ld b, $1
-	call Func_21ff7
-	ld [hl], d
-	call Music8_GetNextMusicByte
-	ld d, a
-	ld b, $2
-	call Func_21ff7
-	ld [hl], d
-	call Music8_GetNextMusicByte
-	ld e, a
-	ld a, c
-	cp CH7
-	ld a, $0
-	jr z, .sfxNoiseChannel ; only two params for noise channel
-	push de
-	call Music8_GetNextMusicByte
-	pop de
-.sfxNoiseChannel
-	ld d, a
-	push de
-	call Func_21daa
-	call Func_21d79
-	pop de
-	call Func_21dcc
-	ret
-
-Music8_unknownsfx0x10: ; 21c40 (8:5c40)
-	ld a, c
-	cp CH4
-	jr c, Music8_note ; if not a sfx
-	ld a, d
-	cp $10 ; is this command a unknownsfx0x10?
-	jr nz, Music8_note ; no
-	ld b, $0
-	ld hl, $c036
-	add hl, bc
-	bit 0, [hl]
-	jr nz, Music8_note ; no
-	call Music8_GetNextMusicByte ; yes
-	ld [$FF00+$10], a
-	jp Music8_endchannel
-
-Music8_note: ; 21c5c (8:5c5c)
-	ld a, c
-	cp CH3
-	jr nz, Music8_notelength ; if not noise channel
-	ld a, d
-	and $f0
-	cp $b0 ; is this command a dnote?
-	jr z, Music8_dnote ; yes
-	jr nc, Music8_notelength ; no
-	swap a
-	ld b, a
-	ld a, d
-	and $f
-	ld d, a
-	ld a, b
-	push de
-	push bc
-	jr asm_21c7e
-
-Music8_dnote: ; 21c76 (8:5c76)
-	ld a, d
-	and $f
-	push af
-	push bc
-	call Music8_GetNextMusicByte ; get dnote instrument
-asm_21c7e
-	ld d, a
-	ld a, [$c003]
-	and a
-	jr nz, .asm_21c89
-	ld a, d
-	call Func_22035
-.asm_21c89
-	pop bc
-	pop de
-
-Music8_notelength: ; 21c8b (8:5c8b)
-	ld a, d
-	push af
-	and $f
-	inc a
-	ld b, $0
-	ld e, a ; store note length (in 16ths)
-	ld d, b
-	ld hl, $c0c6
-	add hl, bc
-	ld a, [hl]
-	ld l, b
-	call Func_22006
-	ld a, c
-	cp CH4
-	jr nc, .sfxChannel
-	ld a, [$c0e8]
-	ld d, a
-	ld a, [$c0e9]
-	ld e, a
-	jr .skip
-.sfxChannel
-	ld d, $1
-	ld e, $0
-	cp CH7
-	jr z, .skip ; if noise channel
-	call Func_21e2f
-	ld a, [$c0ea]
-	ld d, a
-	ld a, [$c0eb]
-	ld e, a
-.skip
-	ld a, l
-	ld b, $0
-	ld hl, $c0ce
-	add hl, bc
-	ld l, [hl]
-	call Func_22006
-	ld e, l
-	ld d, h
-	ld hl, $c0ce
-	add hl, bc
-	ld [hl], e
-	ld a, d
-	ld hl, $c0b6
-	add hl, bc
-	ld [hl], a
-	ld hl, $c036
-	add hl, bc
-	bit 0, [hl]
-	jr nz, Music8_notepitch
-	ld hl, $c02e
-	add hl, bc
-	bit 2, [hl]
-	jr z, Music8_notepitch
-	pop hl
-	ret
-
-Music8_notepitch: ; 21ce9 (8:5ce9)
-	pop af
-	and $f0
-	cp $c0 ; compare to rest
-	jr nz, .notRest
-	ld a, c
-	cp CH4
-	jr nc, .sfxChannel
-	ld hl, $c02a
-	add hl, bc
-	ld a, [hl]
-	and a
-	jr nz, .done
-	; fall through
-.sfxChannel
-	ld a, c
-	cp CH2
-	jr z, .musicChannel3
-	cp CH6
-	jr nz, .notSfxChannel3
-.musicChannel3
-	ld b, $0
-	ld hl, Unknown_222de
-	add hl, bc
-	ld a, [$FF00+$25]
-	and [hl]
-	ld [$FF00+$25], a
-	jr .done
-.notSfxChannel3
-	ld b, $2
-	call Func_21ff7
-	ld a, $8
-	ld [hli], a
-	inc hl
-	ld a, $80
-	ld [hl], a
-.done
-	ret
-.notRest
-	swap a
-	ld b, $0
-	ld hl, $c0d6
-	add hl, bc
-	ld b, [hl]
-	call Func_22017
-	ld b, $0
-	ld hl, $c02e
-	add hl, bc
-	bit 4, [hl]
-	jr z, .asm_21d39
-	call Func_21f4e
-.asm_21d39
-	push de
-	ld a, c
-	cp CH4
-	jr nc, .skip ; if sfx channel
-	ld hl, $c02a
-	ld d, $0
-	ld e, a
-	add hl, de
-	ld a, [hl]
-	and a
-	jr nz, .asm_21d4c
-	jr .skip
-.asm_21d4c
-	pop de
-	ret
-.skip
-	ld b, $0
-	ld hl, $c0de
-	add hl, bc
-	ld d, [hl]
-	ld b, $2
-	call Func_21ff7
-	ld [hl], d
-	call Func_21daa
-	call Func_21d79
-	pop de
-	ld b, $0
-	ld hl, $c02e
-	add hl, bc
-	bit 0, [hl]
-	jr z, .asm_21d70
-	inc e
-	jr nc, .asm_21d70
-	inc d
-.asm_21d70
-	ld hl, $c066
-	add hl, bc
-	ld [hl], e
-	call Func_21dcc
-	ret
-
-Func_21d79: ; 21d79 (8:5d79)
-	ld b, $0
-	ld hl, Unknown_222e6
-	add hl, bc
-	ld a, [$FF00+$25]
-	or [hl]
-	ld d, a
-	ld a, c
-	cp CH7
-	jr z, .sfxNoiseChannel
-	cp CH4
-	jr nc, .skip ; if sfx channel
-	ld hl, $c02a
-	add hl, bc
-	ld a, [hl]
-	and a
-	jr nz, .skip
-.sfxNoiseChannel
-	ld a, [$c004]
-	ld hl, Unknown_222e6
-	add hl, bc
-	and [hl]
-	ld d, a
-	ld a, [$FF00+$25]
-	ld hl, Unknown_222de
-	add hl, bc
-	and [hl]
-	or d
-	ld d, a
-.skip
-	ld a, d
-	ld [$FF00+$25], a
-	ret
-
-Func_21daa: ; 21daa (8:5daa)
-	ld b, $0
-	ld hl, $c0b6
-	add hl, bc
-	ld d, [hl]
-	ld a, c
-	cp CH2
-	jr z, .channel3 ; if music channel 3
-	cp CH6
-	jr z, .channel3 ; if sfx channel 3
-	ld a, d
-	and $3f
-	ld d, a
-	ld hl, $c03e
-	add hl, bc
-	ld a, [hl]
-	or d
-	ld d, a
-.channel3
-	ld b, $1
-	call Func_21ff7
-	ld [hl], d
-	ret
-
-Func_21dcc: ; 21dcc (8:5dcc)
-	ld a, c
-	cp CH2
-	jr z, .channel3
-	cp CH6
-	jr nz, .notSfxChannel3
-	; fall through
-.channel3
-	push de
-	ld de, $c0e6
-	cp CH2
-	jr z, .musicChannel3
-	ld de, $c0e7
-.musicChannel3
-	ld a, [de]
-	add a
-	ld d, $0
-	ld e, a
-	ld hl, Music8_Channel3DutyPointers
-	add hl, de
-	ld e, [hl]
-	inc hl
-	ld d, [hl]
-	ld hl, $ff30
-	ld b, $f
-	ld a, $0
-	ld [$FF00+$1a], a
-.loop
-	ld a, [de]
-	inc de
-	ld [hli], a
-	ld a, b
-	dec b
-	and a
-	jr nz, .loop
-	ld a, $80
-	ld [$FF00+$1a], a
-	pop de
-.notSfxChannel3
-	ld a, d
-	or $80
-	and $c7
-	ld d, a
-	ld b, $3
-	call Func_21ff7
-	ld [hl], e
-	inc hl
-	ld [hl], d
-	ld a, c
-	cp CH4
-	jr c, .musicChannel
-	call Func_21e56
-.musicChannel
-	ret
-
-Func_21e19: ; 21e19 (8:5e19)
-	ld a, c
-	cp CH4
-	jr nz, .asm_21e2e
-	ld a, [$d083]
-	bit 7, a
-	jr z, .asm_21e2e
-	xor a
-	ld [$c0f1], a
-	ld a, $80
-	ld [$c0f2], a
-.asm_21e2e
-	ret
-
-Func_21e2f: ; 21e2f (8:5e2f)
-	call Func_21e8b
-	jr c, .asm_21e39
-	call Func_21e9f
-	jr nc, .asm_21e4c
-.asm_21e39
-	ld d, $0
-	ld a, [$c0f2]
-	add $80
-	jr nc, .asm_21e43
-	inc d
-.asm_21e43
-	ld [$c0eb], a
-	ld a, d
-	ld [$c0ea], a
-	jr .asm_21e55
-.asm_21e4c
-	xor a
-	ld [$c0eb], a
-	ld a, $1
-	ld [$c0ea], a
-.asm_21e55
-	ret
-
-Func_21e56: ; 21e56 (8:5e56)
-	call Func_21e8b
-	jr c, .asm_21e60
-	call Func_21e9f
-	jr nc, .asm_21e6c
-.asm_21e60
-	ld a, [$c0f1]
-	add e
-	jr nc, .asm_21e67
-	inc d
-.asm_21e67
-	dec hl
-	ld e, a
-	ld [hl], e
-	inc hl
-	ld [hl], d
-.asm_21e6c
-	ret
-
-Func_21e6d: ; 21e6d (8:5e6d)
-	call Func_21e8b
-	jr nc, .asm_21e88
-	ld hl, $c006
-	ld e, c
-	ld d, $0
-	sla e
-	rl d
-	add hl, de
-	ld a, [hl]
-	sub $1
-	ld [hl], a
-	inc hl
-	ld a, [hl]
-	sbc $0
-	ld [hl], a
-	scf
-	ret
-.asm_21e88
-	scf
-	ccf
-	ret
-
-Func_21e8b: ; 21e8b (8:5e8b)
-	ld a, [$c02a]
-	cp $14
-	jr nc, .asm_21e94
-	jr .asm_21e9a
-.asm_21e94
-	cp $86
-	jr z, .asm_21e9a
-	jr c, .asm_21e9d
-.asm_21e9a
-	scf
-	ccf
-	ret
-.asm_21e9d
-	scf
-	ret
-
-Func_21e9f: ; 21e9f (8:5e9f)
-	ld a, [$c02d]
-	ld b, a
-	ld a, [$c02a]
-	or b
-	cp $9d
-	jr nc, .asm_21ead
-	jr .asm_21eb3
-.asm_21ead
-	cp $ea
-	jr z, .asm_21eb3
-	jr c, .asm_21eb6
-.asm_21eb3
-	scf
-	ccf
-	ret
-.asm_21eb6
-	scf
-	ret
-
-Music8_ApplyPitchBend: ; 21eb8 (8:5eb8)
-	ld hl, $c02e
-	add hl, bc
-	bit 5, [hl]
-	jp nz, .asm_21eff
-	ld hl, $c09e
-	add hl, bc
-	ld e, [hl]
-	ld hl, $c096
-	add hl, bc
-	ld d, [hl]
-	ld hl, $c07e
-	add hl, bc
-	ld l, [hl]
-	ld h, b
-	add hl, de
-	ld d, h
-	ld e, l
-	ld hl, $c08e
-	add hl, bc
-	push hl
-	ld hl, $c086
-	add hl, bc
-	ld a, [hl]
-	pop hl
-	add [hl]
-	ld [hl], a
-	ld a, $0
-	adc e
-	ld e, a
-	ld a, $0
-	adc d
-	ld d, a
-	ld hl, $c0a6
-	add hl, bc
-	ld a, [hl]
-	cp d
-	jp c, .asm_21f45
-	jr nz, .asm_21f32
-	ld hl, $c0ae
-	add hl, bc
-	ld a, [hl]
-	cp e
-	jp c, .asm_21f45
-	jr .asm_21f32
-.asm_21eff
-	ld hl, $c09e
-	add hl, bc
-	ld a, [hl]
-	ld hl, $c096
-	add hl, bc
-	ld d, [hl]
-	ld hl, $c07e
-	add hl, bc
-	ld e, [hl]
-	sub e
-	ld e, a
-	ld a, d
-	sbc b
-	ld d, a
-	ld hl, $c086
-	add hl, bc
-	ld a, [hl]
-	add a
-	ld [hl], a
-	ld a, e
-	sbc b
-	ld e, a
-	ld a, d
-	sbc b
-	ld d, a
-	ld hl, $c0a6
-	add hl, bc
-	ld a, d
-	cp [hl]
-	jr c, .asm_21f45
-	jr nz, .asm_21f32
-	ld hl, $c0ae
-	add hl, bc
-	ld a, e
-	cp [hl]
-	jr c, .asm_21f45
-.asm_21f32
-	ld hl, $c09e
-	add hl, bc
-	ld [hl], e
-	ld hl, $c096
-	add hl, bc
-	ld [hl], d
-	ld b, $3
-	call Func_21ff7
-	ld a, e
-	ld [hli], a
-	ld [hl], d
-	ret
-.asm_21f45
-	ld hl, $c02e
-	add hl, bc
-	res 4, [hl]
-	res 5, [hl]
-	ret
-
-Func_21f4e: ; 21f4e (8:5f4e)
-	ld hl, $c096
-	add hl, bc
-	ld [hl], d
-	ld hl, $c09e
-	add hl, bc
-	ld [hl], e
-	ld hl, $c0b6
-	add hl, bc
-	ld a, [hl]
-	ld hl, $c076
-	add hl, bc
-	sub [hl]
-	jr nc, .asm_21f66
-	ld a, $1
-.asm_21f66
-	ld [hl], a
-	ld hl, $c0ae
-	add hl, bc
-	ld a, e
-	sub [hl]
-	ld e, a
-	ld a, d
-	sbc b
-	ld hl, $c0a6
-	add hl, bc
-	sub [hl]
-	jr c, .asm_21f82
-	ld d, a
-	ld b, $0
-	ld hl, $c02e
-	add hl, bc
-	set 5, [hl]
-	jr .asm_21fa5
-.asm_21f82
-	ld hl, $c096
-	add hl, bc
-	ld d, [hl]
-	ld hl, $c09e
-	add hl, bc
-	ld e, [hl]
-	ld hl, $c0ae
-	add hl, bc
-	ld a, [hl]
-	sub e
-	ld e, a
-	ld a, d
-	sbc b
-	ld d, a
-	ld hl, $c0a6
-	add hl, bc
-	ld a, [hl]
-	sub d
-	ld d, a
-	ld b, $0
-	ld hl, $c02e
-	add hl, bc
-	res 5, [hl]
-.asm_21fa5
-	ld hl, $c076
-	add hl, bc
-.asm_21fa9
-	inc b
-	ld a, e
-	sub [hl]
-	ld e, a
-	jr nc, .asm_21fa9
-	ld a, d
-	and a
-	jr z, .asm_21fb7
-	dec a
-	ld d, a
-	jr .asm_21fa9
-.asm_21fb7
-	ld a, e
-	add [hl]
-	ld d, b
-	ld b, $0
-	ld hl, $c07e
-	add hl, bc
-	ld [hl], d
-	ld hl, $c086
-	add hl, bc
-	ld [hl], a
-	ld hl, $c08e
-	add hl, bc
-	ld [hl], a
-	ret
-
-Music8_ApplyDutyCycle: ; 21fcc (8:5fcc)
-	ld b, $0
-	ld hl, $c046
-	add hl, bc
-	ld a, [hl]
-	rlca
-	rlca
-	ld [hl], a
-	and $c0
-	ld d, a
-	ld b, $1
-	call Func_21ff7
-	ld a, [hl]
-	and $3f
-	or d
-	ld [hl], a
-	ret
-
-Music8_GetNextMusicByte: ; 21fe4 (8:5fe4)
-	ld d, $0
-	ld a, c
-	add a
-	ld e, a
-	ld hl, $c006
-	add hl, de
-	ld a, [hli]
-	ld e, a
-	ld a, [hld]
-	ld d, a
-	ld a, [de] ; get next music command
-	inc de
-	ld [hl], e ; store address of next command
-	inc hl
-	ld [hl], d
-	ret
-
-Func_21ff7: ; 21ff7 (8:5ff7)
-	ld a, c
-	ld hl, Unknown_222d6
-	add l
-	jr nc, .noCarry
-	inc h
-.noCarry
-	ld l, a
-	ld a, [hl]
-	add b
-	ld l, a
-	ld h, $ff
-	ret
-
-Func_22006: ; 22006 (8:6006)
-	ld h, $0
-.loop
-	srl a
-	jr nc, .noCarry
-	add hl, de
-.noCarry
-	sla e
-	rl d
-	and a
-	jr z, .done
-	jr .loop
-.done
-	ret
-
-Func_22017: ; 22017 (8:6017)
-	ld h, $0
-	ld l, a
-	add hl, hl
-	ld d, h
-	ld e, l
-	ld hl, Unknown_222ee
-	add hl, de
-	ld e, [hl]
-	inc hl
-	ld d, [hl]
-	ld a, b
-.loop
-	cp CH7
-	jr z, .done
-	sra d
-	rr e
-	inc a
-	jr .loop
-.done
-	ld a, $8
-	add d
-	ld d, a
-	ret
-
-Func_22035: ; 22035 (8:6035)
-	ld [$c001], a
-	cp $ff
-	jp z, Func_221f3
-	cp $e9
-	jp z, Func_2210d
-	jp c, Func_2210d
-	cp $fe
-	jr z, .asm_2204c
-	jp nc, Func_2210d
-.asm_2204c
-	xor a
-	ld [$c000], a
-	ld [$c003], a
-	ld [$c0e9], a
-	ld [$c0e6], a
-	ld [$c0e7], a
-	ld d, $8
-	ld hl, $c016
-	call FillMusicRAM8
-	ld hl, $c006
-	call FillMusicRAM8
-	ld d, $4
-	ld hl, $c026
-	call FillMusicRAM8
-	ld hl, $c02e
-	call FillMusicRAM8
-	ld hl, $c03e
-	call FillMusicRAM8
-	ld hl, $c046
-	call FillMusicRAM8
-	ld hl, $c04e
-	call FillMusicRAM8
-	ld hl, $c056
-	call FillMusicRAM8
-	ld hl, $c05e
-	call FillMusicRAM8
-	ld hl, $c066
-	call FillMusicRAM8
-	ld hl, $c06e
-	call FillMusicRAM8
-	ld hl, $c036
-	call FillMusicRAM8
-	ld hl, $c076
-	call FillMusicRAM8
-	ld hl, $c07e
-	call FillMusicRAM8
-	ld hl, $c086
-	call FillMusicRAM8
-	ld hl, $c08e
-	call FillMusicRAM8
-	ld hl, $c096
-	call FillMusicRAM8
-	ld hl, $c09e
-	call FillMusicRAM8
-	ld hl, $c0a6
-	call FillMusicRAM8
-	ld hl, $c0ae
-	call FillMusicRAM8
-	ld a, $1
-	ld hl, $c0be
-	call FillMusicRAM8
-	ld hl, $c0b6
-	call FillMusicRAM8
-	ld hl, $c0c6
-	call FillMusicRAM8
-	ld [$c0e8], a
-	ld a, $ff
-	ld [$c004], a
-	xor a
-	ld [$FF00+$24], a
-	ld a, $8
-	ld [$FF00+$10], a
-	ld a, $0
-	ld [$FF00+$25], a
-	xor a
-	ld [$FF00+$1a], a
-	ld a, $80
-	ld [$FF00+$1a], a
-	ld a, $77
-	ld [$FF00+$24], a
-	jp Func_2224e
-
-Func_2210d: ; 2210d (8:610d)
-	ld l, a
-	ld e, a
-	ld h, $0
-	ld d, h
-	add hl, hl
-	add hl, de
-	ld de, SFX_Headers_08
-	add hl, de
-	ld a, h
-	ld [$c0ec], a
-	ld a, l
-	ld [$c0ed], a
-	ld a, [hl]
-	and $c0
-	rlca
-	rlca
-	ld c, a
-.asm_22126
-	ld d, c
-	ld a, c
-	add a
-	add c
-	ld c, a
-	ld b, $0
-	ld a, [$c0ec]
-	ld h, a
-	ld a, [$c0ed]
-	ld l, a
-	add hl, bc
-	ld c, d
-	ld a, [hl]
-	and $f
-	ld e, a
-	ld d, $0
-	ld hl, $c026
-	add hl, de
-	ld a, [hl]
-	and a
-	jr z, .asm_22162
-	ld a, e
-	cp $7
-	jr nz, .asm_22159
-	ld a, [$c001]
-	cp $14
-	jr nc, .asm_22152
-	ret
-.asm_22152
-	ld a, [hl]
-	cp $14
-	jr z, .asm_22162
-	jr c, .asm_22162
-.asm_22159
-	ld a, [$c001]
-	cp [hl]
-	jr z, .asm_22162
-	jr c, .asm_22162
-	ret
-.asm_22162
-	xor a
-	push de
-	ld h, d
-	ld l, e
-	add hl, hl
-	ld d, h
-	ld e, l
-	ld hl, $c016
-	add hl, de
-	ld [hli], a
-	ld [hl], a
-	ld hl, $c006
-	add hl, de
-	ld [hli], a
-	ld [hl], a
-	pop de
-	ld hl, $c026
-	add hl, de
-	ld [hl], a
-	ld hl, $c02e
-	add hl, de
-	ld [hl], a
-	ld hl, $c03e
-	add hl, de
-	ld [hl], a
-	ld hl, $c046
-	add hl, de
-	ld [hl], a
-	ld hl, $c04e
-	add hl, de
-	ld [hl], a
-	ld hl, $c056
-	add hl, de
-	ld [hl], a
-	ld hl, $c05e
-	add hl, de
-	ld [hl], a
-	ld hl, $c066
-	add hl, de
-	ld [hl], a
-	ld hl, $c06e
-	add hl, de
-	ld [hl], a
-	ld hl, $c076
-	add hl, de
-	ld [hl], a
-	ld hl, $c07e
-	add hl, de
-	ld [hl], a
-	ld hl, $c086
-	add hl, de
-	ld [hl], a
-	ld hl, $c08e
-	add hl, de
-	ld [hl], a
-	ld hl, $c096
-	add hl, de
-	ld [hl], a
-	ld hl, $c09e
-	add hl, de
-	ld [hl], a
-	ld hl, $c0a6
-	add hl, de
-	ld [hl], a
-	ld hl, $c0ae
-	add hl, de
-	ld [hl], a
-	ld hl, $c036
-	add hl, de
-	ld [hl], a
-	ld a, $1
-	ld hl, $c0be
-	add hl, de
-	ld [hl], a
-	ld hl, $c0b6
-	add hl, de
-	ld [hl], a
-	ld hl, $c0c6
-	add hl, de
-	ld [hl], a
-	ld a, e
-	cp $4
-	jr nz, .asm_221ea
-	ld a, $8
-	ld [$FF00+$10], a
-.asm_221ea
-	ld a, c
-	and a
-	jp z, Func_2224e
-	dec c
-	jp .asm_22126
-
-Func_221f3: ; 221f3 (8:61f3)
-	ld a, $80
-	ld [$FF00+$26], a
-	ld [$FF00+$1a], a
-	xor a
-	ld [$FF00+$25], a
-	ld [$FF00+$1c], a
-	ld a, $8
-	ld [$FF00+$10], a
-	ld [$FF00+$12], a
-	ld [$FF00+$17], a
-	ld [$FF00+$21], a
-	ld a, $40
-	ld [$FF00+$14], a
-	ld [$FF00+$19], a
-	ld [$FF00+$23], a
-	ld a, $77
-	ld [$FF00+$24], a
-	xor a
-	ld [$c000], a
-	ld [$c003], a
-	ld [$c002], a
-	ld [$c0e9], a
-	ld [$c0eb], a
-	ld [$c0e6], a
-	ld [$c0e7], a
-	ld d, $a0
-	ld hl, $c006
-	call FillMusicRAM8
-	ld a, $1
-	ld d, $18
-	ld hl, $c0b6
-	call FillMusicRAM8
-	ld [$c0e8], a
-	ld [$c0ea], a
-	ld a, $ff
-	ld [$c004], a
-	ret
-
-; fills d bytes at hl with a
-FillMusicRAM8: ; 22248 (8:6248)
-	ld b, d
-.loop
-	ld [hli], a
-	dec b
-	jr nz, .loop
-	ret
-
-Func_2224e: ; 2224e (8:624e)
-	ld a, [$c001]
-	ld l, a
-	ld e, a
-	ld h, $0
-	ld d, h
-	add hl, hl
-	add hl, de
-	ld de, SFX_Headers_08
-	add hl, de
-	ld e, l
-	ld d, h
-	ld hl, $c006
-	ld a, [de] ; get channel number
-	ld b, a
-	rlca
-	rlca
-	and $3
-	ld c, a
-	ld a, b
-	and $f
-	ld b, c
-	inc b
-	inc de
-	ld c, $0
-.asm_22270
-	cp c
-	jr z, .asm_22278
-	inc c
-	inc hl
-	inc hl
-	jr .asm_22270
-.asm_22278
-	push hl
-	push bc
-	push af
-	ld b, $0
-	ld c, a
-	ld hl, $c026
-	add hl, bc
-	ld a, [$c001]
-	ld [hl], a
-	pop af
-	cp $3
-	jr c, .asm_22291
-	ld hl, $c02e
-	add hl, bc
-	set 2, [hl]
-.asm_22291
-	pop bc
-	pop hl
-	ld a, [de] ; get channel pointer
-	ld [hli], a
-	inc de
-	ld a, [de]
-	ld [hli], a
-	inc de
-	inc c
-	dec b
-	ld a, b
-	and a
-	ld a, [de]
-	inc de
-	jr nz, .asm_22270
-	ld a, [$c001]
-	cp $14
-	jr nc, .asm_222aa
-	jr .asm_222d4
-.asm_222aa
-	ld a, [$c001]
-	cp $86
-	jr z, .asm_222d4
-	jr c, .asm_222b5
-	jr .asm_222d4
-.asm_222b5
-	ld hl, $c02a
-	ld [hli], a
-	ld [hli], a
-	ld [hli], a
-	ld [hl], a
-	ld hl, $c012 ; sfx noise channel pointer
-	ld de, Noise8_endchannel
-	ld [hl], e
-	inc hl
-	ld [hl], d ; overwrite pointer to point to endchannel
-	ld a, [$c005]
-	and a
-	jr nz, .asm_222d4
-	ld a, [$FF00+$24]
-	ld [$c005], a
-	ld a, $77
-	ld [$FF00+$24], a
-.asm_222d4
-	ret
-
-Noise8_endchannel: ; 222d5 (8:62d5)
-	endchannel
-
-Unknown_222d6: ; 222d6 (8:62d6)
-	db $10, $15, $1A, $1F ; channels 0-3
-	db $10, $15, $1A, $1F ; channels 4-7
-
-Unknown_222de: ; 222de (8:62de)
-	db $EE, $DD, $BB, $77 ; channels 0-3
-	db $EE, $DD, $BB, $77 ; channels 4-7
-
-Unknown_222e6: ; 222e6 (8:62e6)
-	db $11, $22, $44, $88 ; channels 0-3
-	db $11, $22, $44, $88 ; channels 4-7
-
-Unknown_222ee: ; 222ee (8:62ee)
-	dw $F82C
-	dw $F89D
-	dw $F907
-	dw $F96B
-	dw $F9CA
-	dw $FA23
-	dw $FA77
-	dw $FAC7
-	dw $FB12
-	dw $FB58
-	dw $FB9B
-	dw $FBDA
-
 Music_PokeFluteInBattle: ; 22306 (8:6306)
 	ld a, (SFX_08_46 - $4000) / 3 ; PokeFlute outside of battle
 	call PlaySoundWaitForCurrent
@@ -120486,1684 +117085,9 @@
 OwnedMonValues: ; 7d170 (1f:5170)
 	db 10, 40, 60, 90, 120, 150, $ff
 
-Func_7d177: ; 7d177 (1f:5177)
-	ld c, CH0
-.loop
-	ld b, $0
-	ld hl, $c026
-	add hl, bc
-	ld a, [hl]
-	and a
-	jr z, .nextChannel
-	ld a, c
-	cp CH4
-	jr nc, .applyAffects ; if sfx channel
-	ld a, [$c002]
-	and a
-	jr z, .applyAffects
-	bit 7, a
-	jr nz, .nextChannel
-	set 7, a
-	ld [$c002], a
-	xor a
-	ld [$FF00+$25], a
-	ld [$FF00+$1a], a
-	ld a, $80
-	ld [$FF00+$1a], a
-	jr .nextChannel
-.applyAffects
-	call Music1f_Music2_ApplyMusicAffects
-.nextChannel
-	ld a, c
-	inc c ; inc channel number
-	cp CH7
-	jr nz, .loop
-	ret
 
-; this routine checks flags for music effects currently applied
-; to the channel and calls certain functions based on flags.
-; known flags for $c02e:
-;	1: call has been used
-;	3: a toggle used only by this routine for vibrato
-;	4: pitchbend flag
-;	6: dutycycle flag
-Music1f_Music2_ApplyMusicAffects: ; 7d1ac (1f:51ac)
-	ld b, $0
-	ld hl, $c0b6 ; delay until next note
-	add hl, bc
-	ld a, [hl]
-	cp $1 ; if delay is 1, play next note
-	jp z, Music1f_Music2_PlayNextNote
-	dec a ; otherwise, decrease the delay timer
-	ld [hl], a
-	ld a, c
-	cp CH4
-	jr nc, .startChecks ; if a sfx channel
-	ld hl, $c02a
-	add hl, bc
-	ld a, [hl]
-	and a
-	jr z, .startChecks
-	ret
-.startChecks
-	ld hl, $c02e
-	add hl, bc
-	bit 6, [hl] ; dutycycle
-	jr z, .checkForExecuteMusic
-	call Music1f_ApplyDutyCycle
-.checkForExecuteMusic
-	ld b, $0
-	ld hl, $c036
-	add hl, bc
-	bit 0, [hl]
-	jr nz, .checkForPitchBend
-	ld hl, $c02e
-	add hl, bc
-	bit 2, [hl]
-	jr nz, .disablePitchBendVibrato
-.checkForPitchBend
-	ld hl, $c02e
-	add hl, bc
-	bit 4, [hl] ; pitchbend
-	jr z, .checkVibratoDelay
-	jp Music1f_ApplyPitchBend
-.checkVibratoDelay
-	ld hl, $c04e ; vibrato delay
-	add hl, bc
-	ld a, [hl]
-	and a ; check if delay is over
-	jr z, .checkForVibrato
-	dec [hl] ; otherwise, dec delay
-.disablePitchBendVibrato
-	ret
-.checkForVibrato
-	ld hl, $c056 ; vibrato rate
-	add hl, bc
-	ld a, [hl]
-	and a
-	jr nz, .vibrato
-	ret ; no vibrato
-.vibrato
-	ld d, a
-	ld hl, $c05e
-	add hl, bc
-	ld a, [hl]
-	and $f
-	and a
-	jr z, .vibratoAlreadyDone
-	dec [hl] ; apply vibrato pitch change
-	ret
-.vibratoAlreadyDone
-	ld a, [hl]
-	swap [hl]
-	or [hl]
-	ld [hl], a ; reset the vibrato value and start again
-	ld hl, $c066
-	add hl, bc
-	ld e, [hl] ; get note pitch
-	ld hl, $c02e
-	add hl, bc
-	bit 3, [hl] ; this is the only code that sets/resets bit three so
-	jr z, .unset ; it continuously alternates which path it takes
-	res 3, [hl]
-	ld a, d
-	and $f
-	ld d, a
-	ld a, e
-	sub d
-	jr nc, .noCarry
-	ld a, $0
-.noCarry
-	jr .done
-.unset
-	set 3, [hl]
-	ld a, d
-	and $f0
-	swap a
-	add e
-	jr nc, .done
-	ld a, $ff
-.done
-	ld d, a
-	ld b, $3
-	call Func_7d8ac
-	ld [hl], d
-	ret
+INCLUDE "audio/engine_3.asm"
 
-; this routine executes all music commands that take up no time,
-; like tempo changes, duty changes etc. and doesn't return
-; until the first note is reached
-Music1f_Music2_PlayNextNote: ; 7d244 (1f:5244)
-	ld hl, $c06e
-	add hl, bc
-	ld a, [hl]
-	ld hl, $c04e
-	add hl, bc
-	ld [hl], a
-	ld hl, $c02e
-	add hl, bc
-	res 4, [hl]
-	res 5, [hl]
-	call Music1f_endchannel
-	ret
-
-Music1f_endchannel: ; 7d25a (1f:525a)
-	call Music1f_GetNextMusicByte
-	ld d, a
-	cp $ff ; is this command an endchannel?
-	jp nz, Music1f_callchannel ; no
-	ld b, $0 ; yes
-	ld hl, $c02e
-	add hl, bc
-	bit 1, [hl]
-	jr nz, .returnFromCall
-	ld a, c
-	cp CH3
-	jr nc, .noiseOrSfxChannel
-	jr .asm_7d2b3
-.noiseOrSfxChannel
-	res 2, [hl]
-	ld hl, $c036
-	add hl, bc
-	res 0, [hl]
-	cp CH6
-	jr nz, .notSfxChannel3
-	ld a, $0
-	ld [$FF00+$1a], a
-	ld a, $80
-	ld [$FF00+$1a], a
-.notSfxChannel3
-	jr nz, .asm_7d296
-	ld a, [$c003]
-	and a
-	jr z, .asm_7d296
-	xor a
-	ld [$c003], a
-	jr .asm_7d2b3
-.asm_7d296
-	jr .asm_7d2bc
-.returnFromCall
-	res 1, [hl]
-	ld d, $0
-	ld a, c
-	add a
-	ld e, a
-	ld hl, $c006
-	add hl, de
-	push hl ; store current channel address
-	ld hl, $c016
-	add hl, de
-	ld e, l
-	ld d, h
-	pop hl
-	ld a, [de]
-	ld [hli], a
-	inc de
-	ld a, [de]
-	ld [hl], a ; loads channel address to return to
-	jp Music1f_endchannel
-.asm_7d2b3
-	ld hl, Unknown_7db93
-	add hl, bc
-	ld a, [$FF00+$25]
-	and [hl]
-	ld [$FF00+$25], a
-.asm_7d2bc
-	ld a, [$c02a]
-	cp $14
-	jr nc, .asm_7d2c5
-	jr .asm_7d2e2
-.asm_7d2c5
-	ld a, [$c02a]
-	cp $86
-	jr z, .asm_7d2e2
-	jr c, .asm_7d2d0
-	jr .asm_7d2e2
-.asm_7d2d0
-	ld a, c
-	cp CH4
-	jr z, .asm_7d2d9
-	call Func_7d73b
-	ret c
-.asm_7d2d9
-	ld a, [$c005]
-	ld [$FF00+$24], a
-	xor a
-	ld [$c005], a
-.asm_7d2e2
-	ld hl, $c026
-	add hl, bc
-	ld [hl], b
-	ret
-
-Music1f_callchannel: ; 7d2e8 (1f:52e8)
-	cp $fd ; is this command a callchannel?
-	jp nz, Music1f_loopchannel ; no
-	call Music1f_GetNextMusicByte ; yes
-	push af
-	call Music1f_GetNextMusicByte
-	ld d, a
-	pop af
-	ld e, a
-	push de ; store pointer
-	ld d, $0
-	ld a, c
-	add a
-	ld e, a
-	ld hl, $c006
-	add hl, de
-	push hl
-	ld hl, $c016
-	add hl, de
-	ld e, l
-	ld d, h
-	pop hl
-	ld a, [hli]
-	ld [de], a
-	inc de
-	ld a, [hld]
-	ld [de], a ; copy current channel address
-	pop de
-	ld [hl], e
-	inc hl
-	ld [hl], d ; overwrite current address with pointer
-	ld b, $0
-	ld hl, $c02e
-	add hl, bc
-	set 1, [hl] ; set the call flag
-	jp Music1f_endchannel
-
-Music1f_loopchannel: ; 7d31d (1f:531d)
-	cp $fe ; is this command a loopchannel?
-	jp nz, Music1f_notetype ; no
-	call Music1f_GetNextMusicByte ; yes
-	ld e, a
-	and a
-	jr z, .infiniteLoop
-	ld b, $0
-	ld hl, $c0be
-	add hl, bc
-	ld a, [hl]
-	cp e
-	jr nz, .loopAgain
-	ld a, $1 ; if no more loops to make
-	ld [hl], a
-	call Music1f_GetNextMusicByte ; skip pointer
-	call Music1f_GetNextMusicByte
-	jp Music1f_endchannel
-.loopAgain ; inc loop count
-	inc a
-	ld [hl], a
-	; fall through
-.infiniteLoop ; overwrite current address with pointer
-	call Music1f_GetNextMusicByte
-	push af
-	call Music1f_GetNextMusicByte
-	ld b, a
-	ld d, $0
-	ld a, c
-	add a
-	ld e, a
-	ld hl, $c006
-	add hl, de
-	pop af
-	ld [hli], a
-	ld [hl], b
-	jp Music1f_endchannel
-
-Music1f_notetype: ; 7d358 (1f:5358)
-	and $f0
-	cp $d0 ; is this command a notetype?
-	jp nz, Music1f_togglecall ; no
-	ld a, d ; yes
-	and $f
-	ld b, $0
-	ld hl, $c0c6
-	add hl, bc
-	ld [hl], a ; store low nibble as speed
-	ld a, c
-	cp CH3
-	jr z, .noiseChannel ; noise channel has 0 params
-	call Music1f_GetNextMusicByte
-	ld d, a
-	ld a, c
-	cp CH2
-	jr z, .musicChannel3
-	cp CH6
-	jr nz, .notChannel3
-	ld hl, $c0e7
-	jr .sfxChannel3
-.musicChannel3
-	ld hl, $c0e6
-.sfxChannel3
-	ld a, d
-	and $f
-	ld [hl], a ; store low nibble of param as duty
-	ld a, d
-	and $30
-	sla a
-	ld d, a
-	; fall through
-
-	; if channel 3, store high nibble as volume
-	; else, store volume (high nibble) and fade (low nibble)
-.notChannel3
-	ld b, $0
-	ld hl, $c0de
-	add hl, bc
-	ld [hl], d
-.noiseChannel
-	jp Music1f_endchannel
-
-Music1f_togglecall: ; 7d397 (1f:5397)
-	ld a, d
-	cp $e8 ; is this command an togglecall?
-	jr nz, Music1f_vibrato ; no
-	ld b, $0 ; yes
-	ld hl, $c02e
-	add hl, bc
-	ld a, [hl]
-	xor $1
-	ld [hl], a ; flip bit 0 of $c02e (toggle returning from call)
-	jp Music1f_endchannel
-
-Music1f_vibrato: ; 7d3a9 (1f:53a9)
-	cp $ea ; is this command a vibrato?
-	jr nz, Music1f_pitchbend ; no
-	call Music1f_GetNextMusicByte ; yes
-	ld b, $0
-	ld hl, $c04e
-	add hl, bc
-	ld [hl], a ; store delay
-	ld hl, $c06e
-	add hl, bc
-	ld [hl], a ; store delay
-	call Music1f_GetNextMusicByte
-	ld d, a
-	and $f0
-	swap a
-	ld b, $0
-	ld hl, $c056
-	add hl, bc
-	srl a
-	ld e, a
-	adc b
-	swap a
-	or e
-	ld [hl], a ; store rate as both high and low nibbles
-	ld a, d
-	and $f
-	ld d, a
-	ld hl, $c05e
-	add hl, bc
-	swap a
-	or d
-	ld [hl], a ; store depth as both high and low nibbles
-	jp Music1f_endchannel
-
-Music1f_pitchbend: ; 7d3e1 (1f:53e1)
-	cp $eb ; is this command a pitchbend?
-	jr nz, Music1f_duty ; no
-	call Music1f_GetNextMusicByte ; yes
-	ld b, $0
-	ld hl, $c076
-	add hl, bc
-	ld [hl], a ; store first param
-	call Music1f_GetNextMusicByte
-	ld d, a
-	and $f0
-	swap a
-	ld b, a
-	ld a, d
-	and $f
-	call Func_7d8cc
-	ld b, $0
-	ld hl, $c0a6
-	add hl, bc
-	ld [hl], d ; store unknown part of second param
-	ld hl, $c0ae
-	add hl, bc
-	ld [hl], e ; store unknown part of second param
-	ld b, $0
-	ld hl, $c02e
-	add hl, bc
-	set 4, [hl] ; set pitchbend flag
-	call Music1f_GetNextMusicByte
-	ld d, a
-	jp Music1f_notelength
-
-Music1f_duty: ; 7d419 (1f:5419)
-	cp $ec ; is this command a duty?
-	jr nz, Music1f_tempo ; no
-	call Music1f_GetNextMusicByte ; yes
-	rrca
-	rrca
-	and $c0
-	ld b, $0
-	ld hl, $c03e
-	add hl, bc
-	ld [hl], a ; store duty
-	jp Music1f_endchannel
-
-Music1f_tempo: ; 7d42e (1f:542e)
-	cp $ed ; is this command a tempo?
-	jr nz, Music1f_unknownmusic0xee ; no
-	ld a, c ; yes
-	cp CH4
-	jr nc, .sfxChannel
-	call Music1f_GetNextMusicByte
-	ld [$c0e8], a ; store first param
-	call Music1f_GetNextMusicByte
-	ld [$c0e9], a ; store second param
-	xor a
-	ld [$c0ce], a ; clear RAM
-	ld [$c0cf], a
-	ld [$c0d0], a
-	ld [$c0d1], a
-	jr .musicChannelDone
-.sfxChannel
-	call Music1f_GetNextMusicByte
-	ld [$c0ea], a ; store first param
-	call Music1f_GetNextMusicByte
-	ld [$c0eb], a ; store second param
-	xor a
-	ld [$c0d2], a ; clear RAM
-	ld [$c0d3], a
-	ld [$c0d4], a
-	ld [$c0d5], a
-.musicChannelDone
-	jp Music1f_endchannel
-
-Music1f_unknownmusic0xee: ; 7d46e (1f:546e)
-	cp $ee ; is this command an unknownmusic0xee?
-	jr nz, Music1f_unknownmusic0xef ; no
-	call Music1f_GetNextMusicByte ; yes
-	ld [$c004], a ; store first param
-	jp Music1f_endchannel
-
-; this appears to never be used
-Music1f_unknownmusic0xef: ; 7d47b (1f:547b)
-	cp $ef ; is this command an unknownmusic0xef?
-	jr nz, Music1f_dutycycle ; no
-	call Music1f_GetNextMusicByte ; yes
-	push bc
-	call Func_7d8ea
-	pop bc
-	ld a, [$c003]
-	and a
-	jr nz, .skip
-	ld a, [$c02d]
-	ld [$c003], a
-	xor a
-	ld [$c02d], a
-.skip
-	jp Music1f_endchannel
-
-Music1f_dutycycle: ; 7d49a (1f:549a)
-	cp $fc ; is this command a dutycycle?
-	jr nz, Music1f_stereopanning ; no
-	call Music1f_GetNextMusicByte ; yes
-	ld b, $0
-	ld hl, $c046
-	add hl, bc
-	ld [hl], a ; store full cycle
-	and $c0
-	ld hl, $c03e
-	add hl, bc
-	ld [hl], a ; store first duty
-	ld hl, $c02e
-	add hl, bc
-	set 6, [hl] ; set duty flag
-	jp Music1f_endchannel
-
-Music1f_stereopanning: ; 7d4b8 (1f:54b8)
-	cp $f0 ; is this command a stereopanning?
-	jr nz, Music1f_executemusic ; no
-	call Music1f_GetNextMusicByte ; yes
-	ld [$FF00+$24], a ; store stereopanning
-	jp Music1f_endchannel
-
-Music1f_executemusic: ; 7d4c4 (1f:54c4)
-	cp $f8 ; is this command an executemusic?
-	jr nz, Music1f_octave ; no
-	ld b, $0 ; yes
-	ld hl, $c036
-	add hl, bc
-	set 0, [hl]
-	jp Music1f_endchannel
-
-Music1f_octave: ; 7d4d3 (1f:54d3)
-	and $f0
-	cp $e0 ; is this command an octave?
-	jr nz, Music1f_unknownsfx0x20 ; no
-	ld hl, $c0d6 ; yes
-	ld b, $0
-	add hl, bc
-	ld a, d
-	and $f
-	ld [hl], a ; store low nibble as octave
-	jp Music1f_endchannel
-
-Music1f_unknownsfx0x20: ; 7d4e6 (1f:54e6)
-	cp $20 ; is this command an unknownsfx0x20?
-	jr nz, Music1f_unknownsfx0x10 ; no
-	ld a, c
-	cp CH3 ; is this a noise or sfx channel?
-	jr c, Music1f_unknownsfx0x10 ; no
-	ld b, $0
-	ld hl, $c036
-	add hl, bc
-	bit 0, [hl]
-	jr nz, Music1f_unknownsfx0x10 ; no
-	call Music1f_notelength ; yes
-	ld d, a
-	ld b, $0
-	ld hl, $c03e
-	add hl, bc
-	ld a, [hl]
-	or d
-	ld d, a
-	ld b, $1
-	call Func_7d8ac
-	ld [hl], d
-	call Music1f_GetNextMusicByte
-	ld d, a
-	ld b, $2
-	call Func_7d8ac
-	ld [hl], d
-	call Music1f_GetNextMusicByte
-	ld e, a
-	ld a, c
-	cp CH7
-	ld a, $0
-	jr z, .sfxNoiseChannel ; only two params for noise channel
-	push de
-	call Music1f_GetNextMusicByte
-	pop de
-.sfxNoiseChannel
-	ld d, a
-	push de
-	call Func_7d69d
-	call Func_7d66c
-	pop de
-	call Func_7d6bf
-	ret
-
-Music1f_unknownsfx0x10 ; 7d533 (1f:5533)
-	ld a, c
-	cp CH4
-	jr c, Music1f_note ; if not a sfx
-	ld a, d
-	cp $10 ; is this command an unknownsfx0x10?
-	jr nz, Music1f_note ; no
-	ld b, $0
-	ld hl, $c036
-	add hl, bc
-	bit 0, [hl]
-	jr nz, Music1f_note ; no
-	call Music1f_GetNextMusicByte ; yes
-	ld [$FF00+$10], a
-	jp Music1f_endchannel
-
-Music1f_note: ; 7d54f (1f:554f)
-	ld a, c
-	cp CH3
-	jr nz, Music1f_notelength ; if not noise channel
-	ld a, d
-	and $f0
-	cp $b0 ; is this command a dnote?
-	jr z, Music1f_dnote ; yes
-	jr nc, Music1f_notelength ; no
-	swap a
-	ld b, a
-	ld a, d
-	and $f
-	ld d, a
-	ld a, b
-	push de
-	push bc
-	jr asm_7d571
-
-Music1f_dnote: ; 7d569 (1f:5569)
-	ld a, d
-	and $f
-	push af
-	push bc
-	call Music1f_GetNextMusicByte ; get dnote instrument
-asm_7d571
-	ld d, a
-	ld a, [$c003]
-	and a
-	jr nz, .asm_7d57c
-	ld a, d
-	call Func_7d8ea
-.asm_7d57c
-	pop bc
-	pop de
-
-Music1f_notelength: ; 7d57e (1f:557e)
-	ld a, d
-	push af
-	and $f
-	inc a
-	ld b, $0
-	ld e, a  ; store note length (in 16ths)
-	ld d, b
-	ld hl, $c0c6
-	add hl, bc
-	ld a, [hl]
-	ld l, b
-	call Func_7d8bb
-	ld a, c
-	cp CH4
-	jr nc, .sfxChannel
-	ld a, [$c0e8]
-	ld d, a
-	ld a, [$c0e9]
-	ld e, a
-	jr .skip
-.sfxChannel
-	ld d, $1
-	ld e, $0
-	cp CH7
-	jr z, .skip ; if noise channel
-	call Func_7d707
-	ld a, [$c0ea]
-	ld d, a
-	ld a, [$c0eb]
-	ld e, a
-.skip
-	ld a, l
-	ld b, $0
-	ld hl, $c0ce
-	add hl, bc
-	ld l, [hl]
-	call Func_7d8bb
-	ld e, l
-	ld d, h
-	ld hl, $c0ce
-	add hl, bc
-	ld [hl], e
-	ld a, d
-	ld hl, $c0b6
-	add hl, bc
-	ld [hl], a
-	ld hl, $c036
-	add hl, bc
-	bit 0, [hl]
-	jr nz, Music1f_notepitch
-	ld hl, $c02e
-	add hl, bc
-	bit 2, [hl]
-	jr z, Music1f_notepitch
-	pop hl
-	ret
-
-Music1f_notepitch: ; 7d5dc (1f:55dc)
-	pop af
-	and $f0
-	cp $c0 ; compare to rest
-	jr nz, .notRest
-	ld a, c
-	cp CH4
-	jr nc, .sfxChannel
-	ld hl, $c02a
-	add hl, bc
-	ld a, [hl]
-	and a
-	jr nz, .quit
-	; fall through
-.sfxChannel
-	ld a, c
-	cp CH2
-	jr z, .musicChannel3
-	cp CH6
-	jr nz, .notSfxChannel3
-.musicChannel3
-	ld b, $0
-	ld hl, Unknown_7db93
-	add hl, bc
-	ld a, [$FF00+$25]
-	and [hl]
-	ld [$FF00+$25], a
-	jr .quit
-.notSfxChannel3
-	ld b, $2
-	call Func_7d8ac
-	ld a, $8
-	ld [hli], a
-	inc hl
-	ld a, $80
-	ld [hl], a
-.quit
-	ret
-.notRest
-	swap a
-	ld b, $0
-	ld hl, $c0d6
-	add hl, bc
-	ld b, [hl]
-	call Func_7d8cc
-	ld b, $0
-	ld hl, $c02e
-	add hl, bc
-	bit 4, [hl]
-	jr z, .asm_7d62c
-	call Func_7d803
-.asm_7d62c
-	push de
-	ld a, c
-	cp CH4
-	jr nc, .skip ; if sfx Channel
-	ld hl, $c02a
-	ld d, $0
-	ld e, a
-	add hl, de
-	ld a, [hl]
-	and a
-	jr nz, .done
-	jr .skip
-.done
-	pop de
-	ret
-.skip
-	ld b, $0
-	ld hl, $c0de
-	add hl, bc
-	ld d, [hl]
-	ld b, $2
-	call Func_7d8ac
-	ld [hl], d
-	call Func_7d69d
-	call Func_7d66c
-	pop de
-	ld b, $0
-	ld hl, $c02e
-	add hl, bc
-	bit 0, [hl]
-	jr z, .asm_7d663
-	inc e
-	jr nc, .asm_7d663
-	inc d
-.asm_7d663
-	ld hl, $c066
-	add hl, bc
-	ld [hl], e
-	call Func_7d6bf
-	ret
-
-Func_7d66c: ; 7d66c (1f:566c)
-	ld b, $0
-	ld hl, Unknown_7db9b
-	add hl, bc
-	ld a, [$FF00+$25]
-	or [hl]
-	ld d, a
-	ld a, c
-	cp CH7
-	jr z, .sfxNoiseChannel
-	cp CH4
-	jr nc, .skip ; if sfx channel
-	ld hl, $c02a
-	add hl, bc
-	ld a, [hl]
-	and a
-	jr nz, .skip
-.sfxNoiseChannel
-	ld a, [$c004]
-	ld hl, Unknown_7db9b
-	add hl, bc
-	and [hl]
-	ld d, a
-	ld a, [$FF00+$25]
-	ld hl, Unknown_7db93
-	add hl, bc
-	and [hl]
-	or d
-	ld d, a
-.skip
-	ld a, d
-	ld [$FF00+$25], a
-	ret
-
-Func_7d69d: ; 7d69d (1f:569d)
-	ld b, $0
-	ld hl, $c0b6
-	add hl, bc
-	ld d, [hl]
-	ld a, c
-	cp CH2
-	jr z, .channel3 ; if music channel 3
-	cp CH6
-	jr z, .channel3 ; if sfx channel 3
-	ld a, d
-	and $3f
-	ld d, a
-	ld hl, $c03e
-	add hl, bc
-	ld a, [hl]
-	or d
-	ld d, a
-.channel3
-	ld b, $1
-	call Func_7d8ac
-	ld [hl], d
-	ret
-
-Func_7d6bf: ; 7d6bf (1f:56bf)
-	ld a, c
-	cp CH2
-	jr z, .channel3
-	cp CH6
-	jr nz, .notSfxChannel3
-	; fall through
-.channel3
-	push de
-	ld de, $c0e6
-	cp CH2
-	jr z, .musicChannel3
-	ld de, $c0e7
-.musicChannel3
-	ld a, [de]
-	add a
-	ld d, $0
-	ld e, a
-	ld hl, Music1f_Channel3DutyPointers
-	add hl, de
-	ld e, [hl]
-	inc hl
-	ld d, [hl]
-	ld hl, $ff30
-	ld b, $f
-	ld a, $0
-	ld [$FF00+$1a], a
-.loop
-	ld a, [de]
-	inc de
-	ld [hli], a
-	ld a, b
-	dec b
-	and a
-	jr nz, .loop
-	ld a, $80
-	ld [$FF00+$1a], a
-	pop de
-.notSfxChannel3
-	ld a, d
-	or $80
-	and $c7
-	ld d, a
-	ld b, $3
-	call Func_7d8ac
-	ld [hl], e
-	inc hl
-	ld [hl], d
-	call Func_7d729
-	ret
-
-Func_7d707: ; 7d707 (1f:5707)
-	call Func_7d759
-	jr nc, .asm_7d71f
-	ld d, $0
-	ld a, [$c0f2]
-	add $80
-	jr nc, .asm_7d716
-	inc d
-.asm_7d716
-	ld [$c0eb], a
-	ld a, d
-	ld [$c0ea], a
-	jr .asm_7d728
-.asm_7d71f
-	xor a
-	ld [$c0eb], a
-	ld a, $1
-	ld [$c0ea], a
-.asm_7d728
-	ret
-
-Func_7d729: ; 7d729 (1f:5729)
-	call Func_7d759
-	jr nc, .asm_7d73a
-	ld a, [$c0f1]
-	add e
-	jr nc, .asm_7d735
-	inc d
-.asm_7d735
-	dec hl
-	ld e, a
-	ld [hl], e
-	inc hl
-	ld [hl], d
-.asm_7d73a
-	ret
-
-Func_7d73b: ; 7d73b (1f:573b)
-	call Func_7d759
-	jr nc, .asm_7d756
-	ld hl, $c006
-	ld e, c
-	ld d, $0
-	sla e
-	rl d
-	add hl, de
-	ld a, [hl]
-	sub $1
-	ld [hl], a
-	inc hl
-	ld a, [hl]
-	sbc $0
-	ld [hl], a
-	scf
-	ret
-.asm_7d756
-	scf
-	ccf
-	ret
-
-Func_7d759: ; 7d759 (1f:5759)
-	ld a, [$c02a]
-	cp $14
-	jr nc, .asm_7d762
-	jr .asm_7d768
-.asm_7d762
-	cp $86
-	jr z, .asm_7d768
-	jr c, .asm_7d76b
-.asm_7d768
-	scf
-	ccf
-	ret
-.asm_7d76b
-	scf
-	ret
-
-Music1f_ApplyPitchBend: ; 7d76d (1f:576d)
-	ld hl, $c02e
-	add hl, bc
-	bit 5, [hl]
-	jp nz, .asm_7d7b4
-	ld hl, $c09e
-	add hl, bc
-	ld e, [hl]
-	ld hl, $c096
-	add hl, bc
-	ld d, [hl]
-	ld hl, $c07e
-	add hl, bc
-	ld l, [hl]
-	ld h, b
-	add hl, de
-	ld d, h
-	ld e, l
-	ld hl, $c08e
-	add hl, bc
-	push hl
-	ld hl, $c086
-	add hl, bc
-	ld a, [hl]
-	pop hl
-	add [hl]
-	ld [hl], a
-	ld a, $0
-	adc e
-	ld e, a
-	ld a, $0
-	adc d
-	ld d, a
-	ld hl, $c0a6
-	add hl, bc
-	ld a, [hl]
-	cp d
-	jp c, .asm_7d7fa
-	jr nz, .asm_7d7e7
-	ld hl, $c0ae
-	add hl, bc
-	ld a, [hl]
-	cp e
-	jp c, .asm_7d7fa
-	jr .asm_7d7e7
-.asm_7d7b4
-	ld hl, $c09e
-	add hl, bc
-	ld a, [hl]
-	ld hl, $c096
-	add hl, bc
-	ld d, [hl]
-	ld hl, $c07e
-	add hl, bc
-	ld e, [hl]
-	sub e
-	ld e, a
-	ld a, d
-	sbc b
-	ld d, a
-	ld hl, $c086
-	add hl, bc
-	ld a, [hl]
-	add a
-	ld [hl], a
-	ld a, e
-	sbc b
-	ld e, a
-	ld a, d
-	sbc b
-	ld d, a
-	ld hl, $c0a6
-	add hl, bc
-	ld a, d
-	cp [hl]
-	jr c, .asm_7d7fa
-	jr nz, .asm_7d7e7
-	ld hl, $c0ae
-	add hl, bc
-	ld a, e
-	cp [hl]
-	jr c, .asm_7d7fa
-.asm_7d7e7
-	ld hl, $c09e
-	add hl, bc
-	ld [hl], e
-	ld hl, $c096
-	add hl, bc
-	ld [hl], d
-	ld b, $3
-	call Func_7d8ac
-	ld a, e
-	ld [hli], a
-	ld [hl], d
-	ret
-.asm_7d7fa
-	ld hl, $c02e
-	add hl, bc
-	res 4, [hl]
-	res 5, [hl]
-	ret
-
-Func_7d803: ; 7d803 (1f:5803)
-	ld hl, $c096
-	add hl, bc
-	ld [hl], d
-	ld hl, $c09e
-	add hl, bc
-	ld [hl], e
-	ld hl, $c0b6
-	add hl, bc
-	ld a, [hl]
-	ld hl, $c076
-	add hl, bc
-	sub [hl]
-	jr nc, .asm_7d81b
-	ld a, $1
-.asm_7d81b
-	ld [hl], a
-	ld hl, $c0ae
-	add hl, bc
-	ld a, e
-	sub [hl]
-	ld e, a
-	ld a, d
-	sbc b
-	ld hl, $c0a6
-	add hl, bc
-	sub [hl]
-	jr c, .asm_7d837
-	ld d, a
-	ld b, $0
-	ld hl, $c02e
-	add hl, bc
-	set 5, [hl]
-	jr .asm_7d85a
-.asm_7d837
-	ld hl, $c096
-	add hl, bc
-	ld d, [hl]
-	ld hl, $c09e
-	add hl, bc
-	ld e, [hl]
-	ld hl, $c0ae
-	add hl, bc
-	ld a, [hl]
-	sub e
-	ld e, a
-	ld a, d
-	sbc b
-	ld d, a
-	ld hl, $c0a6
-	add hl, bc
-	ld a, [hl]
-	sub d
-	ld d, a
-	ld b, $0
-	ld hl, $c02e
-	add hl, bc
-	res 5, [hl]
-.asm_7d85a
-	ld hl, $c076
-	add hl, bc
-.asm_7d85e
-	inc b
-	ld a, e
-	sub [hl]
-	ld e, a
-	jr nc, .asm_7d85e
-	ld a, d
-	and a
-	jr z, .asm_7d86c
-	dec a
-	ld d, a
-	jr .asm_7d85e
-.asm_7d86c
-	ld a, e
-	add [hl]
-	ld d, b
-	ld b, $0
-	ld hl, $c07e
-	add hl, bc
-	ld [hl], d
-	ld hl, $c086
-	add hl, bc
-	ld [hl], a
-	ld hl, $c08e
-	add hl, bc
-	ld [hl], a
-	ret
-
-Music1f_ApplyDutyCycle: ; 7d881 (1f:5881)
-	ld b, $0
-	ld hl, $c046
-	add hl, bc
-	ld a, [hl]
-	rlca
-	rlca
-	ld [hl], a
-	and $c0
-	ld d, a
-	ld b, $1
-	call Func_7d8ac
-	ld a, [hl]
-	and $3f
-	or d
-	ld [hl], a
-	ret
-
-Music1f_GetNextMusicByte: ; 7d899 (1f:5899)
-	ld d, $0
-	ld a, c
-	add a
-	ld e, a
-	ld hl, $c006
-	add hl, de
-	ld a, [hli]
-	ld e, a
-	ld a, [hld]
-	ld d, a
-	ld a, [de] ; get next music command
-	inc de
-	ld [hl], e ; store address of next command
-	inc hl
-	ld [hl], d
-	ret
-
-Func_7d8ac: ; 7d8ac (1f:58ac)
-	ld a, c
-	ld hl, Unknown_7db8b
-	add l
-	jr nc, .noCarry
-	inc h
-.noCarry
-	ld l, a
-	ld a, [hl]
-	add b
-	ld l, a
-	ld h, $ff
-	ret
-
-Func_7d8bb: ; 7d8bb (1f:58bb)
-	ld h, $0
-.loop
-	srl a
-	jr nc, .noCarry
-	add hl, de
-.noCarry
-	sla e
-	rl d
-	and a
-	jr z, .done
-	jr .loop
-.done
-	ret
-
-Func_7d8cc: ; 7d8cc (1f:58cc)
-	ld h, $0
-	ld l, a
-	add hl, hl
-	ld d, h
-	ld e, l
-	ld hl, Unknown_7dba3
-	add hl, de
-	ld e, [hl]
-	inc hl
-	ld d, [hl]
-	ld a, b
-.loop
-	cp $7
-	jr z, .done
-	sra d
-	rr e
-	inc a
-	jr .loop
-.done
-	ld a, $8
-	add d
-	ld d, a
-	ret
-
-Func_7d8ea: ; 7d8ea (1f:58ea)
-	ld [$c001], a
-	cp $ff
-	jp z, Func_7daa8
-	cp $c2
-	jp z, Func_7d9c2
-	jp c, Func_7d9c2
-	cp $fe
-	jr z, .asm_7d901
-	jp nc, Func_7d9c2
-.asm_7d901
-	xor a
-	ld [$c000], a
-	ld [$c003], a
-	ld [$c0e9], a
-	ld [$c0e6], a
-	ld [$c0e7], a
-	ld d, $8
-	ld hl, $c016
-	call FillMusicRAM1f
-	ld hl, $c006
-	call FillMusicRAM1f
-	ld d, $4
-	ld hl, $c026
-	call FillMusicRAM1f
-	ld hl, $c02e
-	call FillMusicRAM1f
-	ld hl, $c03e
-	call FillMusicRAM1f
-	ld hl, $c046
-	call FillMusicRAM1f
-	ld hl, $c04e
-	call FillMusicRAM1f
-	ld hl, $c056
-	call FillMusicRAM1f
-	ld hl, $c05e
-	call FillMusicRAM1f
-	ld hl, $c066
-	call FillMusicRAM1f
-	ld hl, $c06e
-	call FillMusicRAM1f
-	ld hl, $c036
-	call FillMusicRAM1f
-	ld hl, $c076
-	call FillMusicRAM1f
-	ld hl, $c07e
-	call FillMusicRAM1f
-	ld hl, $c086
-	call FillMusicRAM1f
-	ld hl, $c08e
-	call FillMusicRAM1f
-	ld hl, $c096
-	call FillMusicRAM1f
-	ld hl, $c09e
-	call FillMusicRAM1f
-	ld hl, $c0a6
-	call FillMusicRAM1f
-	ld hl, $c0ae
-	call FillMusicRAM1f
-	ld a, $1
-	ld hl, $c0be
-	call FillMusicRAM1f
-	ld hl, $c0b6
-	call FillMusicRAM1f
-	ld hl, $c0c6
-	call FillMusicRAM1f
-	ld [$c0e8], a
-	ld a, $ff
-	ld [$c004], a
-	xor a
-	ld [$FF00+$24], a
-	ld a, $8
-	ld [$FF00+$10], a
-	ld a, $0
-	ld [$FF00+$25], a
-	xor a
-	ld [$FF00+$1a], a
-	ld a, $80
-	ld [$FF00+$1a], a
-	ld a, $77
-	ld [$FF00+$24], a
-	jp Func_7db03
-
-Func_7d9c2: ; 7d9c2 (1f:59c2)
-	ld l, a
-	ld e, a
-	ld h, $0
-	ld d, h
-	add hl, hl
-	add hl, de
-	ld de, SFX_Headers_1f
-	add hl, de
-	ld a, h
-	ld [$c0ec], a
-	ld a, l
-	ld [$c0ed], a
-	ld a, [hl]
-	and $c0
-	rlca
-	rlca
-	ld c, a
-.asm_7d9db
-	ld d, c
-	ld a, c
-	add a
-	add c
-	ld c, a
-	ld b, $0
-	ld a, [$c0ec]
-	ld h, a
-	ld a, [$c0ed]
-	ld l, a
-	add hl, bc
-	ld c, d
-	ld a, [hl]
-	and $f
-	ld e, a
-	ld d, $0
-	ld hl, $c026
-	add hl, de
-	ld a, [hl]
-	and a
-	jr z, .asm_7da17
-	ld a, e
-	cp $7
-	jr nz, .asm_7da0e
-	ld a, [$c001]
-	cp $14
-	jr nc, .asm_7da07
-	ret
-.asm_7da07
-	ld a, [hl]
-	cp $14
-	jr z, .asm_7da17
-	jr c, .asm_7da17
-.asm_7da0e
-	ld a, [$c001]
-	cp [hl]
-	jr z, .asm_7da17
-	jr c, .asm_7da17
-	ret
-.asm_7da17
-	xor a
-	push de
-	ld h, d
-	ld l, e
-	add hl, hl
-	ld d, h
-	ld e, l
-	ld hl, $c016
-	add hl, de
-	ld [hli], a
-	ld [hl], a
-	ld hl, $c006
-	add hl, de
-	ld [hli], a
-	ld [hl], a
-	pop de
-	ld hl, $c026
-	add hl, de
-	ld [hl], a
-	ld hl, $c02e
-	add hl, de
-	ld [hl], a
-	ld hl, $c03e
-	add hl, de
-	ld [hl], a
-	ld hl, $c046
-	add hl, de
-	ld [hl], a
-	ld hl, $c04e
-	add hl, de
-	ld [hl], a
-	ld hl, $c056
-	add hl, de
-	ld [hl], a
-	ld hl, $c05e
-	add hl, de
-	ld [hl], a
-	ld hl, $c066
-	add hl, de
-	ld [hl], a
-	ld hl, $c06e
-	add hl, de
-	ld [hl], a
-	ld hl, $c076
-	add hl, de
-	ld [hl], a
-	ld hl, $c07e
-	add hl, de
-	ld [hl], a
-	ld hl, $c086
-	add hl, de
-	ld [hl], a
-	ld hl, $c08e
-	add hl, de
-	ld [hl], a
-	ld hl, $c096
-	add hl, de
-	ld [hl], a
-	ld hl, $c09e
-	add hl, de
-	ld [hl], a
-	ld hl, $c0a6
-	add hl, de
-	ld [hl], a
-	ld hl, $c0ae
-	add hl, de
-	ld [hl], a
-	ld hl, $c036
-	add hl, de
-	ld [hl], a
-	ld a, $1
-	ld hl, $c0be
-	add hl, de
-	ld [hl], a
-	ld hl, $c0b6
-	add hl, de
-	ld [hl], a
-	ld hl, $c0c6
-	add hl, de
-	ld [hl], a
-	ld a, e
-	cp $4
-	jr nz, .asm_7da9f
-	ld a, $8
-	ld [$FF00+$10], a
-.asm_7da9f
-	ld a, c
-	and a
-	jp z, Func_7db03
-	dec c
-	jp .asm_7d9db
-
-Func_7daa8: ; 7daa8 (1f:5aa8)
-	ld a, $80
-	ld [$FF00+$26], a
-	ld [$FF00+$1a], a
-	xor a
-	ld [$FF00+$25], a
-	ld [$FF00+$1c], a
-	ld a, $8
-	ld [$FF00+$10], a
-	ld [$FF00+$12], a
-	ld [$FF00+$17], a
-	ld [$FF00+$21], a
-	ld a, $40
-	ld [$FF00+$14], a
-	ld [$FF00+$19], a
-	ld [$FF00+$23], a
-	ld a, $77
-	ld [$FF00+$24], a
-	xor a
-	ld [$c000], a
-	ld [$c003], a
-	ld [$c002], a
-	ld [$c0e9], a
-	ld [$c0eb], a
-	ld [$c0e6], a
-	ld [$c0e7], a
-	ld d, $a0
-	ld hl, $c006
-	call FillMusicRAM1f
-	ld a, $1
-	ld d, $18
-	ld hl, $c0b6
-	call FillMusicRAM1f
-	ld [$c0e8], a
-	ld [$c0ea], a
-	ld a, $ff
-	ld [$c004], a
-	ret
-
-; fills d bytes at hl with a
-FillMusicRAM1f: ; 7dafd (1f:5afd)
-	ld b, d
-.loop
-	ld [hli], a
-	dec b
-	jr nz, .loop
-	ret
-
-Func_7db03: ; 7db03 (1f:5b03)
-	ld a, [$c001]
-	ld l, a
-	ld e, a
-	ld h, $0
-	ld d, h
-	add hl, hl
-	add hl, de
-	ld de, SFX_Headers_1f
-	add hl, de
-	ld e, l
-	ld d, h
-	ld hl, $c006
-	ld a, [de] ; get channel number
-	ld b, a
-	rlca
-	rlca
-	and $3
-	ld c, a
-	ld a, b
-	and $f
-	ld b, c
-	inc b
-	inc de
-	ld c, $0
-.asm_7db25
-	cp c
-	jr z, .asm_7db2d
-	inc c
-	inc hl
-	inc hl
-	jr .asm_7db25
-.asm_7db2d
-	push hl
-	push bc
-	push af
-	ld b, $0
-	ld c, a
-	ld hl, $c026
-	add hl, bc
-	ld a, [$c001]
-	ld [hl], a
-	pop af
-	cp $3
-	jr c, .asm_7db46
-	ld hl, $c02e
-	add hl, bc
-	set 2, [hl]
-.asm_7db46
-	pop bc
-	pop hl
-	ld a, [de] ; get channel pointer
-	ld [hli], a
-	inc de
-	ld a, [de]
-	ld [hli], a
-	inc de
-	inc c
-	dec b
-	ld a, b
-	and a
-	ld a, [de]
-	inc de
-	jr nz, .asm_7db25
-	ld a, [$c001]
-	cp $14
-	jr nc, .asm_7db5f
-	jr .asm_7db89
-.asm_7db5f
-	ld a, [$c001]
-	cp $86
-	jr z, .asm_7db89
-	jr c, .asm_7db6a
-	jr .asm_7db89
-.asm_7db6a
-	ld hl, $c02a
-	ld [hli], a
-	ld [hli], a
-	ld [hli], a
-	ld [hl], a
-	ld hl, $c012 ; sfx noise channel pointer
-	ld de, Noise1f_endchannel
-	ld [hl], e
-	inc hl
-	ld [hl], d ; overwrite pointer to point to endchannel
-	ld a, [$c005]
-	and a
-	jr nz, .asm_7db89
-	ld a, [$FF00+$24]
-	ld [$c005], a
-	ld a, $77
-	ld [$FF00+$24], a
-.asm_7db89
-	ret
-
-Noise1f_endchannel: ; 7db8a (1f:5b8a)
-	endchannel
-
-Unknown_7db8b: ; 7db8b (1f:5b8b)
-	db $10, $15, $1A, $1F ; channels 0-3
-	db $10, $15, $1A, $1F ; channels 4-7
-
-Unknown_7db93: ; 7db93 (1f:5b93)
-	db $EE, $DD, $BB, $77 ; channels 0-3
-	db $EE, $DD, $BB, $77 ; channels 4-7
-
-Unknown_7db9b: ; 7db9b (1f:5b9b)
-	db $11, $22, $44, $88 ; channels 0-3
-	db $11, $22, $44, $88 ; channels 4-7
-
-Unknown_7dba3: ; 7dba3 (1f:5ba3)
-	dw $F82C
-	dw $F89D
-	dw $F907
-	dw $F96B
-	dw $F9CA
-	dw $FA23
-	dw $FA77
-	dw $FAC7
-	dw $FB12
-	dw $FB58
-	dw $FB9B
-	dw $FBDA
 
 INCLUDE "music/bikeriding.asm"
 INCLUDE "music/dungeon1.asm"