ref: 27d0b146addee8185178388e0f7a94353d8409ba
dir: /constants/audio_constants.asm/
; 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 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 Ch1 ; 0 const Ch2 ; 1 const Ch3 ; 2 const Ch4 ; 3 NUM_MUSIC_CHANS EQU const_value const Ch5 ; 4 const Ch6 ; 5 const Ch7 ; 6 const Ch8 ; 7 NUM_NOISE_CHANS EQU const_value - NUM_MUSIC_CHANS NUM_CHANNELS EQU const_value ; HW sound channel register base addresses HW_CH1_BASE EQU LOW(rNR10) HW_CH2_BASE EQU LOW(rNR21) - 1 HW_CH3_BASE EQU LOW(rNR30) HW_CH4_BASE EQU LOW(rNR41) - 1 ; HW sound channel enable bit masks HW_CH1_ENABLE_MASK EQU %00010001 HW_CH2_ENABLE_MASK EQU %00100010 HW_CH3_ENABLE_MASK EQU %01000100 HW_CH4_ENABLE_MASK EQU %10001000 ; HW sound channel disable bit masks HW_CH1_DISABLE_MASK EQU (~HW_CH1_ENABLE_MASK & $ff) HW_CH2_DISABLE_MASK EQU (~HW_CH2_ENABLE_MASK & $ff) HW_CH3_DISABLE_MASK EQU (~HW_CH3_ENABLE_MASK & $ff) 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) BIT_EXECUTE_MUSIC EQU 0 ; if in execute music