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; pitch
; Audio[1|2|3]_Pitches indexes (see audio/notes.asm)
const_def
const C_ ; 0
const C# ; 1
const D_ ; 2
const D# ; 3
const E_ ; 4
const F_ ; 5
const F# ; 6
const G_ ; 7
const G# ; 8
const A_ ; 9
const A# ; A
const B_ ; B
DEF NUM_NOTES EQU const_value
; channel
; Audio[1|2|3]_HWChannelBaseAddresses, Audio[1|2|3]_HWChannelDisableMasks,
; and Audio[1|2|3]_HWChannelEnableMasks indexes (see audio/engine_[1|2|3].asm)
const_def
const CHAN1 ; 0
const CHAN2 ; 1
const CHAN3 ; 2
const CHAN4 ; 3
DEF NUM_MUSIC_CHANS EQU const_value
const CHAN5 ; 4
const CHAN6 ; 5
const CHAN7 ; 6
const CHAN8 ; 7
DEF NUM_NOISE_CHANS EQU const_value - NUM_MUSIC_CHANS
DEF NUM_CHANNELS EQU const_value
; HW sound channel register base addresses
DEF HW_CH1_BASE EQU LOW(rAUD1SWEEP)
DEF HW_CH2_BASE EQU LOW(rAUD2LEN) - 1
DEF HW_CH3_BASE EQU LOW(rAUD3ENA)
DEF HW_CH4_BASE EQU LOW(rAUD4LEN) - 1
; HW sound channel enable bit masks
DEF HW_CH1_ENABLE_MASK EQU %00010001
DEF HW_CH2_ENABLE_MASK EQU %00100010
DEF HW_CH3_ENABLE_MASK EQU %01000100
DEF HW_CH4_ENABLE_MASK EQU %10001000
; HW sound channel disable bit masks
DEF HW_CH1_DISABLE_MASK EQU (~HW_CH1_ENABLE_MASK & $ff)
DEF HW_CH2_DISABLE_MASK EQU (~HW_CH2_ENABLE_MASK & $ff)
DEF HW_CH3_DISABLE_MASK EQU (~HW_CH3_ENABLE_MASK & $ff)
DEF HW_CH4_DISABLE_MASK EQU (~HW_CH4_ENABLE_MASK & $ff)
const_def 1
const REG_DUTY_SOUND_LEN ; 1
const REG_VOLUME_ENVELOPE ; 2
const REG_FREQUENCY_LO ; 3
; wChannelFlags1 constants
const_def
const BIT_PERFECT_PITCH ; 0 ; controlled by toggle_perfect_pitch command
const BIT_SOUND_CALL ; 1 ; if in sound call
const BIT_NOISE_OR_SFX ; 2 ; if channel is the music noise channel or an SFX channel
const BIT_VIBRATO_DIRECTION ; 3 ; if the pitch is above or below normal (cycles)
const BIT_PITCH_SLIDE_ON ; 4 ; if pitch slide is active
const BIT_PITCH_SLIDE_DECREASING ; 5 ; if the pitch slide frequency is decreasing (instead of increasing)
const BIT_ROTATE_DUTY_CYCLE ; 6 ; if rotating duty cycle
; wChannelFlags2 constant (only has one flag)
DEF BIT_EXECUTE_MUSIC EQU 0 ; if in execute music
; wMuteAudioAndPauseMusic
DEF BIT_MUTE_AUDIO EQU 7
; wLowHealthAlarm
DEF BIT_LOW_HEALTH_ALARM EQU 7
DEF LOW_HEALTH_TIMER_MASK EQU %01111111
DEF DISABLE_LOW_HEALTH_ALARM EQU $ff
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