StopAllMusic: MACRO
	ld a, $ff
	call PlaySound
ENDM

Ch0    EQU 0
Ch1    EQU 1
Ch2    EQU 2
Ch3    EQU 3
Ch4    EQU 4
Ch5    EQU 5
Ch6    EQU 6
Ch7    EQU 7

audio: MACRO
	db (_NARG - 2) << 6 | \2
	dw \1_\2
	IF _NARG > 2
		db \3
		dw \1_\3
	ENDC
	IF _NARG > 3
		db \4
		dw \1_\4
	ENDC
	IF _NARG > 4
		db \5
		dw \1_\5
	ENDC
ENDM

;format: length [0, 7], pitch change [-7, 7]
pitchenvelope: MACRO
	db $dd ; soundinput
	IF \2 > 0
		db (\1 << 4) | \2
	ELSE
		db (\1 << 4) | (%1000 | (\2 * -1))
	ENDC
ENDM

;format: length [0, 15], volume [0, 15], volume change [-7, 7], pitch
squarenote: MACRO
	; noise/sound
	db \1
	;db $20 | \1
	IF \3 < 0
		db (\2 << 4) | (%1000 | (\3 * -1))
	ELSE
		db (\2 << 4) | \3
	ENDC
	dw \4
ENDM

;format: length [0, 15], volume [0, 15], volume change [-7, 7], pitch
noisenote: MACRO
	db \1 ; | $20
	IF \3 < 0
		db (\2 << 4) | (%1000 | (\3 * -1))
	ELSE
		db (\2 << 4) | \3
	ENDC
	db \4
ENDM


;format: instrument length (in 16ths)
snare1: MACRO
	db $B0 | (\1 - 1)
	db $01
ENDM

snare2: MACRO
	db $B0 | (\1 - 1)
	db $02
ENDM

snare3: MACRO
	db $B0 | (\1 - 1)
	db $03
ENDM

snare4: MACRO
	db $B0 | (\1 - 1)
	db $04
ENDM

snare5: MACRO
	db $B0 | (\1 - 1)
	db $05
ENDM

triangle1: MACRO
	db $B0 | (\1 - 1)
	db $06
ENDM

triangle2: MACRO
	db $B0 | (\1 - 1)
	db $07
ENDM

snare6: MACRO
	db $B0 | (\1 - 1)
	db $08
ENDM

snare7: MACRO
	db $B0 | (\1 - 1)
	db $09
ENDM

snare8: MACRO
	db $B0 | (\1 - 1)
	db $0A
ENDM

snare9: MACRO
	db $B0 | (\1 - 1)
	db $0B
ENDM

cymbal1: MACRO
	db $B0 | (\1 - 1)
	db $0C
ENDM

cymbal2: MACRO
	db $B0 | (\1 - 1)
	db $0D
ENDM

cymbal3: MACRO
	db $B0 | (\1 - 1)
	db $0E
ENDM

mutedsnare1: MACRO
	db $B0 | (\1 - 1)
	db $0F
ENDM

triangle3: MACRO
	db $B0 | (\1 - 1)
	db $10
ENDM

mutedsnare2: MACRO
	db $B0 | (\1 - 1)
	db $11
ENDM

mutedsnare3: MACRO
	db $B0 | (\1 - 1)
	db $12
ENDM

mutedsnare4: MACRO
	db $B0 | (\1 - 1)
	db $13
ENDM

duty: MACRO
	;db $EC
	db $db
	db \1
ENDM

;format: rest length (in 16ths)
rest: MACRO
	db $C0 | (\1 - 1)
ENDM

executemusic: MACRO
	togglesfx
ENDM