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67 lines
2 KiB
NASM
67 lines
2 KiB
NASM
; pitch
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; Audio[1|2|3]_Pitches indexes (see audio/notes.asm)
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const_def
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const C_ ; 0
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const C# ; 1
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const D_ ; 2
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const D# ; 3
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const E_ ; 4
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const F_ ; 5
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const F# ; 6
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const G_ ; 7
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const G# ; 8
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const A_ ; 9
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const A# ; A
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const B_ ; B
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; channel
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; Audio[1|2|3]_HWChannelBaseAddresses, Audio[1|2|3]_HWChannelDisableMasks,
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; and Audio[1|2|3]_HWChannelEnableMasks indexes (see audio/engine_[1|2|3].asm)
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const_def
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const Ch1 ; 0
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const Ch2 ; 1
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const Ch3 ; 2
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const Ch4 ; 3
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NUM_MUSIC_CHANS EQU const_value
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const Ch5 ; 4
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const Ch6 ; 5
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const Ch7 ; 6
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const Ch8 ; 7
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NUM_NOISE_CHANS EQU const_value - NUM_MUSIC_CHANS
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NUM_CHANNELS EQU const_value
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; HW sound channel register base addresses
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HW_CH1_BASE EQU LOW(rNR10)
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HW_CH2_BASE EQU LOW(rNR21) - 1
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HW_CH3_BASE EQU LOW(rNR30)
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HW_CH4_BASE EQU LOW(rNR41) - 1
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; HW sound channel enable bit masks
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HW_CH1_ENABLE_MASK EQU %00010001
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HW_CH2_ENABLE_MASK EQU %00100010
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HW_CH3_ENABLE_MASK EQU %01000100
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HW_CH4_ENABLE_MASK EQU %10001000
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; HW sound channel disable bit masks
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HW_CH1_DISABLE_MASK EQU (~HW_CH1_ENABLE_MASK & $ff)
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HW_CH2_DISABLE_MASK EQU (~HW_CH2_ENABLE_MASK & $ff)
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HW_CH3_DISABLE_MASK EQU (~HW_CH3_ENABLE_MASK & $ff)
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HW_CH4_DISABLE_MASK EQU (~HW_CH4_ENABLE_MASK & $ff)
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const_def 1
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const REG_DUTY_SOUND_LEN ; 1
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const REG_VOLUME_ENVELOPE ; 2
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const REG_FREQUENCY_LO ; 3
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; wChannelFlags1 constants
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const_def
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const BIT_PERFECT_PITCH ; 0 ; controlled by toggle_perfect_pitch command
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const BIT_SOUND_CALL ; 1 ; if in sound call
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const BIT_NOISE_OR_SFX ; 2 ; if channel is the music noise channel or an SFX channel
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const BIT_VIBRATO_DIRECTION ; 3 ; if the pitch is above or below normal (cycles)
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const BIT_PITCH_SLIDE_ON ; 4 ; if pitch slide is active
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const BIT_PITCH_SLIDE_DECREASING ; 5 ; if the pitch slide frequency is decreasing (instead of increasing)
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const BIT_ROTATE_DUTY_CYCLE ; 6 ; if rotating duty cycle
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; wChannelFlags2 constant (only has one flag)
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BIT_EXECUTE_MUSIC EQU 0 ; if in execute music
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