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https://github.com/pret/pokered.git
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1683 lines
28 KiB
NASM
1683 lines
28 KiB
NASM
; The third of three duplicated sound engines.
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Audio3_UpdateMusic:: ; 7d177 (1f:5177)
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ld c, CH0
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.loop
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ld b, $0
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ld hl, wChannelSoundIDs
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add hl, bc
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ld a, [hl]
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and a
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jr z, .nextChannel
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ld a, c
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cp CH4
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jr nc, .applyAffects ; if sfx channel
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ld a, [wMuteAudioAndPauseMusic]
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and a
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jr z, .applyAffects
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bit 7, a
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jr nz, .nextChannel
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set 7, a
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ld [wMuteAudioAndPauseMusic], a
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xor a
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ld [rNR51], a
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ld [rNR30], a
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ld a, $80
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ld [rNR30], a
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jr .nextChannel
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.applyAffects
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call Audio3_ApplyMusicAffects
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.nextChannel
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ld a, c
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inc c ; inc channel number
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cp CH7
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jr nz, .loop
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ret
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; this routine checks flags for music effects currently applied
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; to the channel and calls certain functions based on flags.
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; known flags for wChannelFlags1:
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; 0: toggleperfectpitch has been used
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; 1: call has been used
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; 3: a toggle used only by this routine for vibrato
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; 4: pitchbend flag
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; 6: dutycycle flag
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Audio3_ApplyMusicAffects: ; 7d1ac (1f:51ac)
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ld b, $0
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ld hl, wChannelNoteDelayCounters ; delay until next note
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add hl, bc
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ld a, [hl]
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cp $1 ; if delay is 1, play next note
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jp z, Audio3_PlayNextNote
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dec a ; otherwise, decrease the delay timer
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ld [hl], a
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ld a, c
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cp CH4
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jr nc, .startChecks ; if a sfx channel
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ld hl, wChannelSoundIDs + CH4
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add hl, bc
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ld a, [hl]
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and a
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jr z, .startChecks
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ret
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.startChecks
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ld hl, wChannelFlags1
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add hl, bc
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bit 6, [hl] ; dutycycle
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jr z, .checkForExecuteMusic
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call Audio3_ApplyDutyCycle
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.checkForExecuteMusic
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ld b, $0
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ld hl, wChannelFlags2
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add hl, bc
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bit 0, [hl]
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jr nz, .checkForPitchBend
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ld hl, wChannelFlags1
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add hl, bc
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bit 2, [hl]
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jr nz, .disablePitchBendVibrato
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.checkForPitchBend
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ld hl, wChannelFlags1
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add hl, bc
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bit 4, [hl] ; pitchbend
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jr z, .checkVibratoDelay
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jp Audio3_ApplyPitchBend
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.checkVibratoDelay
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ld hl, wChannelVibratoDelayCounters ; vibrato delay
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add hl, bc
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ld a, [hl]
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and a ; check if delay is over
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jr z, .checkForVibrato
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dec [hl] ; otherwise, dec delay
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.disablePitchBendVibrato
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ret
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.checkForVibrato
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ld hl, wChannelVibratoExtents ; vibrato rate
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add hl, bc
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ld a, [hl]
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and a
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jr nz, .vibrato
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ret ; no vibrato
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.vibrato
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ld d, a
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ld hl, wChannelVibratoRates
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add hl, bc
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ld a, [hl]
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and $f
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and a
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jr z, .vibratoAlreadyDone
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dec [hl] ; apply vibrato pitch change
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ret
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.vibratoAlreadyDone
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ld a, [hl]
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swap [hl]
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or [hl]
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ld [hl], a ; reset the vibrato value and start again
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ld hl, wChannelFrequencyLowBytes
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add hl, bc
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ld e, [hl] ; get note pitch
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ld hl, wChannelFlags1
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add hl, bc
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bit 3, [hl] ; this is the only code that sets/resets bit three so
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jr z, .unset ; it continuously alternates which path it takes
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res 3, [hl]
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ld a, d
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and $f
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ld d, a
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ld a, e
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sub d
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jr nc, .noCarry
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ld a, $0
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.noCarry
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jr .done
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.unset
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set 3, [hl]
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ld a, d
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and $f0
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swap a
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add e
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jr nc, .done
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ld a, $ff
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.done
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ld d, a
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ld b, $3
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call Audio3_7d8ac
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ld [hl], d
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ret
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; this routine executes all music commands that take up no time,
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; like tempo changes, duty changes etc. and doesn't return
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; until the first note is reached
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Audio3_PlayNextNote: ; 7d244 (1f:5244)
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ld hl, wChannelVibratoDelayCounterReloadValues
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add hl, bc
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ld a, [hl]
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ld hl, wChannelVibratoDelayCounters
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add hl, bc
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ld [hl], a
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ld hl, wChannelFlags1
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add hl, bc
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res 4, [hl]
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res 5, [hl]
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call Audio3_endchannel
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ret
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Audio3_endchannel: ; 7d25a (1f:525a)
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call Audio3_GetNextMusicByte
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ld d, a
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cp $ff ; is this command an endchannel?
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jp nz, Audio3_callchannel ; no
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ld b, $0 ; yes
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ld hl, wChannelFlags1
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add hl, bc
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bit 1, [hl]
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jr nz, .returnFromCall
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ld a, c
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cp CH3
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jr nc, .noiseOrSfxChannel
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jr .asm_7d2b3
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.noiseOrSfxChannel
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res 2, [hl]
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ld hl, wChannelFlags2
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add hl, bc
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res 0, [hl]
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cp CH6
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jr nz, .notSfxChannel3
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ld a, $0
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ld [rNR30], a
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ld a, $80
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ld [rNR30], a
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.notSfxChannel3
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jr nz, .asm_7d296
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ld a, [wDisableChannelOutputWhenSfxEnds]
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and a
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jr z, .asm_7d296
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xor a
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ld [wDisableChannelOutputWhenSfxEnds], a
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jr .asm_7d2b3
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.asm_7d296
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jr .asm_7d2bc
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.returnFromCall
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res 1, [hl]
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ld d, $0
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ld a, c
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add a
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ld e, a
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ld hl, wChannelCommandPointers
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add hl, de
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push hl ; store current channel address
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ld hl, wChannelReturnAddresses
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add hl, de
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ld e, l
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ld d, h
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pop hl
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ld a, [de]
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ld [hli], a
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inc de
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ld a, [de]
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ld [hl], a ; loads channel address to return to
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jp Audio3_endchannel
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.asm_7d2b3
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ld hl, Unknown_7db93
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add hl, bc
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ld a, [rNR51]
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and [hl]
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ld [rNR51], a
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.asm_7d2bc
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ld a, [wChannelSoundIDs + CH4]
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cp $14
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jr nc, .asm_7d2c5
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jr .asm_7d2e2
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.asm_7d2c5
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ld a, [wChannelSoundIDs + CH4]
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cp $86
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jr z, .asm_7d2e2
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jr c, .asm_7d2d0
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jr .asm_7d2e2
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.asm_7d2d0
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ld a, c
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cp CH4
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jr z, .asm_7d2d9
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call Audio3_7d73b
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ret c
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.asm_7d2d9
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ld a, [wSavedVolume]
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ld [rNR50], a
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xor a
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ld [wSavedVolume], a
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.asm_7d2e2
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ld hl, wChannelSoundIDs
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add hl, bc
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ld [hl], b
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ret
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Audio3_callchannel: ; 7d2e8 (1f:52e8)
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cp $fd ; is this command a callchannel?
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jp nz, Audio3_loopchannel ; no
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call Audio3_GetNextMusicByte ; yes
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push af
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call Audio3_GetNextMusicByte
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ld d, a
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pop af
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ld e, a
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push de ; store pointer
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ld d, $0
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ld a, c
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add a
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ld e, a
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ld hl, wChannelCommandPointers
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add hl, de
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push hl
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ld hl, wChannelReturnAddresses
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add hl, de
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ld e, l
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ld d, h
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pop hl
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ld a, [hli]
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ld [de], a
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inc de
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ld a, [hld]
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ld [de], a ; copy current channel address
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pop de
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ld [hl], e
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inc hl
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ld [hl], d ; overwrite current address with pointer
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ld b, $0
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ld hl, wChannelFlags1
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add hl, bc
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set 1, [hl] ; set the call flag
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jp Audio3_endchannel
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Audio3_loopchannel: ; 7d31d (1f:531d)
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cp $fe ; is this command a loopchannel?
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jp nz, Audio3_notetype ; no
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call Audio3_GetNextMusicByte ; yes
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ld e, a
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and a
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jr z, .infiniteLoop
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ld b, $0
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ld hl, wChannelLoopCounters
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add hl, bc
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ld a, [hl]
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cp e
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jr nz, .loopAgain
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ld a, $1 ; if no more loops to make
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ld [hl], a
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call Audio3_GetNextMusicByte ; skip pointer
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call Audio3_GetNextMusicByte
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jp Audio3_endchannel
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.loopAgain ; inc loop count
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inc a
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ld [hl], a
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; fall through
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.infiniteLoop ; overwrite current address with pointer
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call Audio3_GetNextMusicByte
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push af
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call Audio3_GetNextMusicByte
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ld b, a
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ld d, $0
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ld a, c
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add a
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ld e, a
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ld hl, wChannelCommandPointers
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add hl, de
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pop af
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ld [hli], a
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ld [hl], b
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jp Audio3_endchannel
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Audio3_notetype: ; 7d358 (1f:5358)
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and $f0
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cp $d0 ; is this command a notetype?
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jp nz, Audio3_toggleperfectpitch ; no
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ld a, d ; yes
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and $f
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ld b, $0
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ld hl, wChannelNoteSpeeds
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add hl, bc
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ld [hl], a ; store low nibble as speed
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ld a, c
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cp CH3
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jr z, .noiseChannel ; noise channel has 0 params
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call Audio3_GetNextMusicByte
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ld d, a
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ld a, c
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cp CH2
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jr z, .musicChannel3
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cp CH6
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jr nz, .notChannel3
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ld hl, wSfxWaveInstrument
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jr .sfxChannel3
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.musicChannel3
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ld hl, wMusicWaveInstrument
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.sfxChannel3
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ld a, d
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and $f
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ld [hl], a ; store low nibble of param as duty
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ld a, d
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and $30
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sla a
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ld d, a
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; fall through
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; if channel 3, store high nibble as volume
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; else, store volume (high nibble) and fade (low nibble)
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.notChannel3
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ld b, $0
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ld hl, wChannelVolumes
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add hl, bc
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ld [hl], d
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.noiseChannel
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jp Audio3_endchannel
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Audio3_toggleperfectpitch: ; 7d397 (1f:5397)
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ld a, d
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cp $e8 ; is this command a toggleperfectpitch?
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jr nz, Audio3_vibrato ; no
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ld b, $0 ; yes
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ld hl, wChannelFlags1
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add hl, bc
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ld a, [hl]
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xor $1
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ld [hl], a ; flip bit 0 of wChannelFlags1
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jp Audio3_endchannel
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Audio3_vibrato: ; 7d3a9 (1f:53a9)
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cp $ea ; is this command a vibrato?
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jr nz, Audio3_pitchbend ; no
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call Audio3_GetNextMusicByte ; yes
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ld b, $0
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ld hl, wChannelVibratoDelayCounters
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add hl, bc
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ld [hl], a ; store delay
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ld hl, wChannelVibratoDelayCounterReloadValues
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add hl, bc
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ld [hl], a ; store delay
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call Audio3_GetNextMusicByte
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ld d, a
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and $f0
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swap a
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ld b, $0
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ld hl, wChannelVibratoExtents
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add hl, bc
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srl a
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ld e, a
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adc b
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swap a
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or e
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ld [hl], a ; store rate as both high and low nibbles
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ld a, d
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and $f
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ld d, a
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ld hl, wChannelVibratoRates
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add hl, bc
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swap a
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or d
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ld [hl], a ; store depth as both high and low nibbles
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jp Audio3_endchannel
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Audio3_pitchbend: ; 7d3e1 (1f:53e1)
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cp $eb ; is this command a pitchbend?
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jr nz, Audio3_duty ; no
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call Audio3_GetNextMusicByte ; yes
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ld b, $0
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ld hl, wChannelPitchBendLengthModifiers
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add hl, bc
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ld [hl], a ; store first param
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call Audio3_GetNextMusicByte
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ld d, a
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and $f0
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swap a
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ld b, a
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ld a, d
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and $f
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call Audio3_7d8cc
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ld b, $0
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ld hl, wChannelPitchBendTargetFrequencyHighBytes
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add hl, bc
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ld [hl], d ; store unknown part of second param
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ld hl, wChannelPitchBendTargetFrequencyLowBytes
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add hl, bc
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ld [hl], e ; store unknown part of second param
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ld b, $0
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ld hl, wChannelFlags1
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add hl, bc
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set 4, [hl] ; set pitchbend flag
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call Audio3_GetNextMusicByte
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ld d, a
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jp Audio3_notelength
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Audio3_duty: ; 7d419 (1f:5419)
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cp $ec ; is this command a duty?
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jr nz, Audio3_tempo ; no
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call Audio3_GetNextMusicByte ; yes
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rrca
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rrca
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and $c0
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ld b, $0
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ld hl, wChannelDuties
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add hl, bc
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ld [hl], a ; store duty
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jp Audio3_endchannel
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Audio3_tempo: ; 7d42e (1f:542e)
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cp $ed ; is this command a tempo?
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jr nz, Audio3_stereopanning ; no
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ld a, c ; yes
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cp CH4
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jr nc, .sfxChannel
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call Audio3_GetNextMusicByte
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ld [wMusicTempo], a ; store first param
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call Audio3_GetNextMusicByte
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ld [wMusicTempo + 1], a ; store second param
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xor a
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ld [wChannelNoteDelayCountersFractionalPart], a ; clear RAM
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ld [wChannelNoteDelayCountersFractionalPart + 1], a
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ld [wChannelNoteDelayCountersFractionalPart + 2], a
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ld [wChannelNoteDelayCountersFractionalPart + 3], a
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jr .musicChannelDone
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.sfxChannel
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call Audio3_GetNextMusicByte
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ld [wSfxTempo], a ; store first param
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call Audio3_GetNextMusicByte
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ld [wSfxTempo + 1], a ; store second param
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xor a
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ld [wChannelNoteDelayCountersFractionalPart + 4], a ; clear RAM
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ld [wChannelNoteDelayCountersFractionalPart + 5], a
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ld [wChannelNoteDelayCountersFractionalPart + 6], a
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ld [wChannelNoteDelayCountersFractionalPart + 7], a
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.musicChannelDone
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jp Audio3_endchannel
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Audio3_stereopanning: ; 7d46e (1f:546e)
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cp $ee ; is this command a stereopanning?
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jr nz, Audio3_unknownmusic0xef ; no
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call Audio3_GetNextMusicByte ; yes
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ld [wStereoPanning], a ; store panning
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jp Audio3_endchannel
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; this appears to never be used
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Audio3_unknownmusic0xef: ; 7d47b (1f:547b)
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cp $ef ; is this command an unknownmusic0xef?
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jr nz, Audio3_dutycycle ; no
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call Audio3_GetNextMusicByte ; yes
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push bc
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call Audio3_PlaySound
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pop bc
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ld a, [wDisableChannelOutputWhenSfxEnds]
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and a
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jr nz, .skip
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ld a, [wChannelSoundIDs + CH7]
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ld [wDisableChannelOutputWhenSfxEnds], a
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xor a
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ld [wChannelSoundIDs + CH7], a
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.skip
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jp Audio3_endchannel
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Audio3_dutycycle: ; 7d49a (1f:549a)
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cp $fc ; is this command a dutycycle?
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jr nz, Audio3_volume ; no
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call Audio3_GetNextMusicByte ; yes
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ld b, $0
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ld hl, wChannelDutyCycles
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add hl, bc
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ld [hl], a ; store full cycle
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and $c0
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ld hl, wChannelDuties
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add hl, bc
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ld [hl], a ; store first duty
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ld hl, wChannelFlags1
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add hl, bc
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set 6, [hl] ; set duty flag
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jp Audio3_endchannel
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Audio3_volume: ; 7d4b8 (1f:54b8)
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cp $f0 ; is this command a volume?
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jr nz, Audio3_executemusic ; no
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call Audio3_GetNextMusicByte ; yes
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ld [rNR50], a ; store volume
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jp Audio3_endchannel
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|
|
|
Audio3_executemusic: ; 7d4c4 (1f:54c4)
|
|
cp $f8 ; is this command an executemusic?
|
|
jr nz, Audio3_octave ; no
|
|
ld b, $0 ; yes
|
|
ld hl, wChannelFlags2
|
|
add hl, bc
|
|
set 0, [hl]
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|
jp Audio3_endchannel
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|
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Audio3_octave: ; 7d4d3 (1f:54d3)
|
|
and $f0
|
|
cp $e0 ; is this command an octave?
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|
jr nz, Audio3_unknownsfx0x20 ; no
|
|
ld hl, wChannelOctaves ; yes
|
|
ld b, $0
|
|
add hl, bc
|
|
ld a, d
|
|
and $f
|
|
ld [hl], a ; store low nibble as octave
|
|
jp Audio3_endchannel
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|
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Audio3_unknownsfx0x20: ; 7d4e6 (1f:54e6)
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cp $20 ; is this command an unknownsfx0x20?
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jr nz, Audio3_unknownsfx0x10 ; no
|
|
ld a, c
|
|
cp CH3 ; is this a noise or sfx channel?
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|
jr c, Audio3_unknownsfx0x10 ; no
|
|
ld b, $0
|
|
ld hl, wChannelFlags2
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|
add hl, bc
|
|
bit 0, [hl]
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|
jr nz, Audio3_unknownsfx0x10 ; no
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call Audio3_notelength ; yes
|
|
ld d, a
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|
ld b, $0
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ld hl, wChannelDuties
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add hl, bc
|
|
ld a, [hl]
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or d
|
|
ld d, a
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|
ld b, $1
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|
call Audio3_7d8ac
|
|
ld [hl], d
|
|
call Audio3_GetNextMusicByte
|
|
ld d, a
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|
ld b, $2
|
|
call Audio3_7d8ac
|
|
ld [hl], d
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call Audio3_GetNextMusicByte
|
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ld e, a
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ld a, c
|
|
cp CH7
|
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ld a, $0
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jr z, .sfxNoiseChannel ; only two params for noise channel
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push de
|
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call Audio3_GetNextMusicByte
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|
pop de
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|
.sfxNoiseChannel
|
|
ld d, a
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|
push de
|
|
call Audio3_7d69d
|
|
call Audio3_7d66c
|
|
pop de
|
|
call Audio3_7d6bf
|
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ret
|
|
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|
Audio3_unknownsfx0x10: ; 7d533 (1f:5533)
|
|
ld a, c
|
|
cp CH4
|
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jr c, Audio3_note ; if not a sfx
|
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ld a, d
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cp $10 ; is this command an unknownsfx0x10?
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jr nz, Audio3_note ; no
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|
ld b, $0
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|
ld hl, wChannelFlags2
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add hl, bc
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bit 0, [hl]
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jr nz, Audio3_note ; no
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call Audio3_GetNextMusicByte ; yes
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|
ld [rNR10], a
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jp Audio3_endchannel
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Audio3_note: ; 7d54f (1f:554f)
|
|
ld a, c
|
|
cp CH3
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jr nz, Audio3_notelength ; if not noise channel
|
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ld a, d
|
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and $f0
|
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cp $b0 ; is this command a dnote?
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jr z, Audio3_dnote ; yes
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jr nc, Audio3_notelength ; no
|
|
swap a
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ld b, a
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|
ld a, d
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and $f
|
|
ld d, a
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|
ld a, b
|
|
push de
|
|
push bc
|
|
jr asm_7d571
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|
|
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Audio3_dnote: ; 7d569 (1f:5569)
|
|
ld a, d
|
|
and $f
|
|
push af
|
|
push bc
|
|
call Audio3_GetNextMusicByte ; get dnote instrument
|
|
asm_7d571
|
|
ld d, a
|
|
ld a, [wDisableChannelOutputWhenSfxEnds]
|
|
and a
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|
jr nz, .asm_7d57c
|
|
ld a, d
|
|
call Audio3_PlaySound
|
|
.asm_7d57c
|
|
pop bc
|
|
pop de
|
|
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Audio3_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, wChannelNoteSpeeds
|
|
add hl, bc
|
|
ld a, [hl]
|
|
ld l, b
|
|
call Audio3_7d8bb
|
|
ld a, c
|
|
cp CH4
|
|
jr nc, .sfxChannel
|
|
ld a, [wMusicTempo]
|
|
ld d, a
|
|
ld a, [wMusicTempo + 1]
|
|
ld e, a
|
|
jr .skip
|
|
.sfxChannel
|
|
ld d, $1
|
|
ld e, $0
|
|
cp CH7
|
|
jr z, .skip ; if noise channel
|
|
call Audio3_7d707
|
|
ld a, [wSfxTempo]
|
|
ld d, a
|
|
ld a, [wSfxTempo + 1]
|
|
ld e, a
|
|
.skip
|
|
ld a, l
|
|
ld b, $0
|
|
ld hl, wChannelNoteDelayCountersFractionalPart
|
|
add hl, bc
|
|
ld l, [hl]
|
|
call Audio3_7d8bb
|
|
ld e, l
|
|
ld d, h
|
|
ld hl, wChannelNoteDelayCountersFractionalPart
|
|
add hl, bc
|
|
ld [hl], e
|
|
ld a, d
|
|
ld hl, wChannelNoteDelayCounters
|
|
add hl, bc
|
|
ld [hl], a
|
|
ld hl, wChannelFlags2
|
|
add hl, bc
|
|
bit 0, [hl]
|
|
jr nz, Audio3_notepitch
|
|
ld hl, wChannelFlags1
|
|
add hl, bc
|
|
bit 2, [hl]
|
|
jr z, Audio3_notepitch
|
|
pop hl
|
|
ret
|
|
|
|
Audio3_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, wChannelSoundIDs + CH4
|
|
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, [rNR51]
|
|
and [hl]
|
|
ld [rNR51], a
|
|
jr .quit
|
|
.notSfxChannel3
|
|
ld b, $2
|
|
call Audio3_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, wChannelOctaves
|
|
add hl, bc
|
|
ld b, [hl]
|
|
call Audio3_7d8cc
|
|
ld b, $0
|
|
ld hl, wChannelFlags1
|
|
add hl, bc
|
|
bit 4, [hl]
|
|
jr z, .asm_7d62c
|
|
call Audio3_7d803
|
|
.asm_7d62c
|
|
push de
|
|
ld a, c
|
|
cp CH4
|
|
jr nc, .skip ; if sfx Channel
|
|
ld hl, wChannelSoundIDs + CH4
|
|
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, wChannelVolumes
|
|
add hl, bc
|
|
ld d, [hl]
|
|
ld b, $2
|
|
call Audio3_7d8ac
|
|
ld [hl], d
|
|
call Audio3_7d69d
|
|
call Audio3_7d66c
|
|
pop de
|
|
ld b, $0
|
|
ld hl, wChannelFlags1
|
|
add hl, bc
|
|
bit 0, [hl] ; has toggleperfectpitch been used?
|
|
jr z, .skip2
|
|
inc e ; if yes, increment the pitch by 1
|
|
jr nc, .skip2
|
|
inc d
|
|
.skip2
|
|
ld hl, wChannelFrequencyLowBytes
|
|
add hl, bc
|
|
ld [hl], e
|
|
call Audio3_7d6bf
|
|
ret
|
|
|
|
Audio3_7d66c: ; 7d66c (1f:566c)
|
|
ld b, $0
|
|
ld hl, Unknown_7db9b
|
|
add hl, bc
|
|
ld a, [rNR51]
|
|
or [hl]
|
|
ld d, a
|
|
ld a, c
|
|
cp CH7
|
|
jr z, .sfxNoiseChannel
|
|
cp CH4
|
|
jr nc, .skip ; if sfx channel
|
|
ld hl, wChannelSoundIDs + CH4
|
|
add hl, bc
|
|
ld a, [hl]
|
|
and a
|
|
jr nz, .skip
|
|
.sfxNoiseChannel
|
|
ld a, [wStereoPanning]
|
|
ld hl, Unknown_7db9b
|
|
add hl, bc
|
|
and [hl]
|
|
ld d, a
|
|
ld a, [rNR51]
|
|
ld hl, Unknown_7db93
|
|
add hl, bc
|
|
and [hl]
|
|
or d
|
|
ld d, a
|
|
.skip
|
|
ld a, d
|
|
ld [rNR51], a
|
|
ret
|
|
|
|
Audio3_7d69d: ; 7d69d (1f:569d)
|
|
ld b, $0
|
|
ld hl, wChannelNoteDelayCounters
|
|
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, wChannelDuties
|
|
add hl, bc
|
|
ld a, [hl]
|
|
or d
|
|
ld d, a
|
|
.channel3
|
|
ld b, $1
|
|
call Audio3_7d8ac
|
|
ld [hl], d
|
|
ret
|
|
|
|
Audio3_7d6bf: ; 7d6bf (1f:56bf)
|
|
ld a, c
|
|
cp CH2
|
|
jr z, .channel3
|
|
cp CH6
|
|
jr nz, .notSfxChannel3
|
|
; fall through
|
|
.channel3
|
|
push de
|
|
ld de, wMusicWaveInstrument
|
|
cp CH2
|
|
jr z, .musicChannel3
|
|
ld de, wSfxWaveInstrument
|
|
.musicChannel3
|
|
ld a, [de]
|
|
add a
|
|
ld d, $0
|
|
ld e, a
|
|
ld hl, Audio3_WavePointers
|
|
add hl, de
|
|
ld e, [hl]
|
|
inc hl
|
|
ld d, [hl]
|
|
ld hl, $ff30
|
|
ld b, $f
|
|
ld a, $0
|
|
ld [rNR30], a
|
|
.loop
|
|
ld a, [de]
|
|
inc de
|
|
ld [hli], a
|
|
ld a, b
|
|
dec b
|
|
and a
|
|
jr nz, .loop
|
|
ld a, $80
|
|
ld [rNR30], a
|
|
pop de
|
|
.notSfxChannel3
|
|
ld a, d
|
|
or $80
|
|
and $c7
|
|
ld d, a
|
|
ld b, $3
|
|
call Audio3_7d8ac
|
|
ld [hl], e
|
|
inc hl
|
|
ld [hl], d
|
|
call Audio3_7d729
|
|
ret
|
|
|
|
Audio3_7d707: ; 7d707 (1f:5707)
|
|
call Audio3_7d759
|
|
jr nc, .asm_7d71f
|
|
ld d, $0
|
|
ld a, [wTempoModifier]
|
|
add $80
|
|
jr nc, .asm_7d716
|
|
inc d
|
|
.asm_7d716
|
|
ld [wSfxTempo + 1], a
|
|
ld a, d
|
|
ld [wSfxTempo], a
|
|
jr .asm_7d728
|
|
.asm_7d71f
|
|
xor a
|
|
ld [wSfxTempo + 1], a
|
|
ld a, $1
|
|
ld [wSfxTempo], a
|
|
.asm_7d728
|
|
ret
|
|
|
|
Audio3_7d729: ; 7d729 (1f:5729)
|
|
call Audio3_7d759
|
|
jr nc, .asm_7d73a
|
|
ld a, [wFrequencyModifier]
|
|
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
|
|
|
|
Audio3_7d73b: ; 7d73b (1f:573b)
|
|
call Audio3_7d759
|
|
jr nc, .asm_7d756
|
|
ld hl, wChannelCommandPointers
|
|
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
|
|
|
|
Audio3_7d759: ; 7d759 (1f:5759)
|
|
ld a, [wChannelSoundIDs + CH4]
|
|
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
|
|
|
|
Audio3_ApplyPitchBend: ; 7d76d (1f:576d)
|
|
ld hl, wChannelFlags1
|
|
add hl, bc
|
|
bit 5, [hl]
|
|
jp nz, .asm_7d7b4
|
|
ld hl, wChannelPitchBendCurrentFrequencyLowBytes
|
|
add hl, bc
|
|
ld e, [hl]
|
|
ld hl, wChannelPitchBendCurrentFrequencyHighBytes
|
|
add hl, bc
|
|
ld d, [hl]
|
|
ld hl, wChannelPitchBendFrequencySteps
|
|
add hl, bc
|
|
ld l, [hl]
|
|
ld h, b
|
|
add hl, de
|
|
ld d, h
|
|
ld e, l
|
|
ld hl, wChannelPitchBendCurrentFrequencyFractionalPart
|
|
add hl, bc
|
|
push hl
|
|
ld hl, wChannelPitchBendFrequencyStepsFractionalPart
|
|
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, wChannelPitchBendTargetFrequencyHighBytes
|
|
add hl, bc
|
|
ld a, [hl]
|
|
cp d
|
|
jp c, .asm_7d7fa
|
|
jr nz, .asm_7d7e7
|
|
ld hl, wChannelPitchBendTargetFrequencyLowBytes
|
|
add hl, bc
|
|
ld a, [hl]
|
|
cp e
|
|
jp c, .asm_7d7fa
|
|
jr .asm_7d7e7
|
|
.asm_7d7b4
|
|
ld hl, wChannelPitchBendCurrentFrequencyLowBytes
|
|
add hl, bc
|
|
ld a, [hl]
|
|
ld hl, wChannelPitchBendCurrentFrequencyHighBytes
|
|
add hl, bc
|
|
ld d, [hl]
|
|
ld hl, wChannelPitchBendFrequencySteps
|
|
add hl, bc
|
|
ld e, [hl]
|
|
sub e
|
|
ld e, a
|
|
ld a, d
|
|
sbc b
|
|
ld d, a
|
|
ld hl, wChannelPitchBendFrequencyStepsFractionalPart
|
|
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, wChannelPitchBendTargetFrequencyHighBytes
|
|
add hl, bc
|
|
ld a, d
|
|
cp [hl]
|
|
jr c, .asm_7d7fa
|
|
jr nz, .asm_7d7e7
|
|
ld hl, wChannelPitchBendTargetFrequencyLowBytes
|
|
add hl, bc
|
|
ld a, e
|
|
cp [hl]
|
|
jr c, .asm_7d7fa
|
|
.asm_7d7e7
|
|
ld hl, wChannelPitchBendCurrentFrequencyLowBytes
|
|
add hl, bc
|
|
ld [hl], e
|
|
ld hl, wChannelPitchBendCurrentFrequencyHighBytes
|
|
add hl, bc
|
|
ld [hl], d
|
|
ld b, $3
|
|
call Audio3_7d8ac
|
|
ld a, e
|
|
ld [hli], a
|
|
ld [hl], d
|
|
ret
|
|
.asm_7d7fa
|
|
ld hl, wChannelFlags1
|
|
add hl, bc
|
|
res 4, [hl]
|
|
res 5, [hl]
|
|
ret
|
|
|
|
Audio3_7d803: ; 7d803 (1f:5803)
|
|
ld hl, wChannelPitchBendCurrentFrequencyHighBytes
|
|
add hl, bc
|
|
ld [hl], d
|
|
ld hl, wChannelPitchBendCurrentFrequencyLowBytes
|
|
add hl, bc
|
|
ld [hl], e
|
|
ld hl, wChannelNoteDelayCounters
|
|
add hl, bc
|
|
ld a, [hl]
|
|
ld hl, wChannelPitchBendLengthModifiers
|
|
add hl, bc
|
|
sub [hl]
|
|
jr nc, .asm_7d81b
|
|
ld a, $1
|
|
.asm_7d81b
|
|
ld [hl], a
|
|
ld hl, wChannelPitchBendTargetFrequencyLowBytes
|
|
add hl, bc
|
|
ld a, e
|
|
sub [hl]
|
|
ld e, a
|
|
ld a, d
|
|
sbc b
|
|
ld hl, wChannelPitchBendTargetFrequencyHighBytes
|
|
add hl, bc
|
|
sub [hl]
|
|
jr c, .asm_7d837
|
|
ld d, a
|
|
ld b, $0
|
|
ld hl, wChannelFlags1
|
|
add hl, bc
|
|
set 5, [hl]
|
|
jr .asm_7d85a
|
|
.asm_7d837
|
|
ld hl, wChannelPitchBendCurrentFrequencyHighBytes
|
|
add hl, bc
|
|
ld d, [hl]
|
|
ld hl, wChannelPitchBendCurrentFrequencyLowBytes
|
|
add hl, bc
|
|
ld e, [hl]
|
|
ld hl, wChannelPitchBendTargetFrequencyLowBytes
|
|
add hl, bc
|
|
ld a, [hl]
|
|
sub e
|
|
ld e, a
|
|
ld a, d
|
|
sbc b
|
|
ld d, a
|
|
ld hl, wChannelPitchBendTargetFrequencyHighBytes
|
|
add hl, bc
|
|
ld a, [hl]
|
|
sub d
|
|
ld d, a
|
|
ld b, $0
|
|
ld hl, wChannelFlags1
|
|
add hl, bc
|
|
res 5, [hl]
|
|
.asm_7d85a
|
|
ld hl, wChannelPitchBendLengthModifiers
|
|
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, wChannelPitchBendFrequencySteps
|
|
add hl, bc
|
|
ld [hl], d
|
|
ld hl, wChannelPitchBendFrequencyStepsFractionalPart
|
|
add hl, bc
|
|
ld [hl], a
|
|
ld hl, wChannelPitchBendCurrentFrequencyFractionalPart
|
|
add hl, bc
|
|
ld [hl], a
|
|
ret
|
|
|
|
Audio3_ApplyDutyCycle: ; 7d881 (1f:5881)
|
|
ld b, $0
|
|
ld hl, wChannelDutyCycles
|
|
add hl, bc
|
|
ld a, [hl]
|
|
rlca
|
|
rlca
|
|
ld [hl], a
|
|
and $c0
|
|
ld d, a
|
|
ld b, $1
|
|
call Audio3_7d8ac
|
|
ld a, [hl]
|
|
and $3f
|
|
or d
|
|
ld [hl], a
|
|
ret
|
|
|
|
Audio3_GetNextMusicByte: ; 7d899 (1f:5899)
|
|
ld d, $0
|
|
ld a, c
|
|
add a
|
|
ld e, a
|
|
ld hl, wChannelCommandPointers
|
|
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
|
|
|
|
Audio3_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
|
|
|
|
Audio3_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
|
|
|
|
Audio3_7d8cc: ; 7d8cc (1f:58cc)
|
|
ld h, $0
|
|
ld l, a
|
|
add hl, hl
|
|
ld d, h
|
|
ld e, l
|
|
ld hl, Audio3_Pitches
|
|
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
|
|
|
|
Audio3_PlaySound:: ; 7d8ea (1f:58ea)
|
|
ld [wSoundID], a
|
|
cp $ff
|
|
jp z, Audio3_7daa8
|
|
cp $c2
|
|
jp z, Audio3_7d9c2
|
|
jp c, Audio3_7d9c2
|
|
cp $fe
|
|
jr z, .asm_7d901
|
|
jp nc, Audio3_7d9c2
|
|
.asm_7d901
|
|
xor a
|
|
ld [wUnusedC000], a
|
|
ld [wDisableChannelOutputWhenSfxEnds], a
|
|
ld [wMusicTempo + 1], a
|
|
ld [wMusicWaveInstrument], a
|
|
ld [wSfxWaveInstrument], a
|
|
ld d, $8
|
|
ld hl, wChannelReturnAddresses
|
|
call FillAudioRAM3
|
|
ld hl, wChannelCommandPointers
|
|
call FillAudioRAM3
|
|
ld d, $4
|
|
ld hl, wChannelSoundIDs
|
|
call FillAudioRAM3
|
|
ld hl, wChannelFlags1
|
|
call FillAudioRAM3
|
|
ld hl, wChannelDuties
|
|
call FillAudioRAM3
|
|
ld hl, wChannelDutyCycles
|
|
call FillAudioRAM3
|
|
ld hl, wChannelVibratoDelayCounters
|
|
call FillAudioRAM3
|
|
ld hl, wChannelVibratoExtents
|
|
call FillAudioRAM3
|
|
ld hl, wChannelVibratoRates
|
|
call FillAudioRAM3
|
|
ld hl, wChannelFrequencyLowBytes
|
|
call FillAudioRAM3
|
|
ld hl, wChannelVibratoDelayCounterReloadValues
|
|
call FillAudioRAM3
|
|
ld hl, wChannelFlags2
|
|
call FillAudioRAM3
|
|
ld hl, wChannelPitchBendLengthModifiers
|
|
call FillAudioRAM3
|
|
ld hl, wChannelPitchBendFrequencySteps
|
|
call FillAudioRAM3
|
|
ld hl, wChannelPitchBendFrequencyStepsFractionalPart
|
|
call FillAudioRAM3
|
|
ld hl, wChannelPitchBendCurrentFrequencyFractionalPart
|
|
call FillAudioRAM3
|
|
ld hl, wChannelPitchBendCurrentFrequencyHighBytes
|
|
call FillAudioRAM3
|
|
ld hl, wChannelPitchBendCurrentFrequencyLowBytes
|
|
call FillAudioRAM3
|
|
ld hl, wChannelPitchBendTargetFrequencyHighBytes
|
|
call FillAudioRAM3
|
|
ld hl, wChannelPitchBendTargetFrequencyLowBytes
|
|
call FillAudioRAM3
|
|
ld a, $1
|
|
ld hl, wChannelLoopCounters
|
|
call FillAudioRAM3
|
|
ld hl, wChannelNoteDelayCounters
|
|
call FillAudioRAM3
|
|
ld hl, wChannelNoteSpeeds
|
|
call FillAudioRAM3
|
|
ld [wMusicTempo], a
|
|
ld a, $ff
|
|
ld [wStereoPanning], a
|
|
xor a
|
|
ld [rNR50], a
|
|
ld a, $8
|
|
ld [rNR10], a
|
|
ld a, $0
|
|
ld [rNR51], a
|
|
xor a
|
|
ld [rNR30], a
|
|
ld a, $80
|
|
ld [rNR30], a
|
|
ld a, $77
|
|
ld [rNR50], a
|
|
jp Audio3_7db03
|
|
|
|
Audio3_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_3
|
|
add hl, de
|
|
ld a, h
|
|
ld [wSfxHeaderPointer], a
|
|
ld a, l
|
|
ld [wSfxHeaderPointer + 1], 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, [wSfxHeaderPointer]
|
|
ld h, a
|
|
ld a, [wSfxHeaderPointer + 1]
|
|
ld l, a
|
|
add hl, bc
|
|
ld c, d
|
|
ld a, [hl]
|
|
and $f
|
|
ld e, a
|
|
ld d, $0
|
|
ld hl, wChannelSoundIDs
|
|
add hl, de
|
|
ld a, [hl]
|
|
and a
|
|
jr z, .asm_7da17
|
|
ld a, e
|
|
cp $7
|
|
jr nz, .asm_7da0e
|
|
ld a, [wSoundID]
|
|
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, [wSoundID]
|
|
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, wChannelReturnAddresses
|
|
add hl, de
|
|
ld [hli], a
|
|
ld [hl], a
|
|
ld hl, wChannelCommandPointers
|
|
add hl, de
|
|
ld [hli], a
|
|
ld [hl], a
|
|
pop de
|
|
ld hl, wChannelSoundIDs
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelFlags1
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelDuties
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelDutyCycles
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelVibratoDelayCounters
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelVibratoExtents
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelVibratoRates
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelFrequencyLowBytes
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelVibratoDelayCounterReloadValues
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelPitchBendLengthModifiers
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelPitchBendFrequencySteps
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelPitchBendFrequencyStepsFractionalPart
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelPitchBendCurrentFrequencyFractionalPart
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelPitchBendCurrentFrequencyHighBytes
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelPitchBendCurrentFrequencyLowBytes
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelPitchBendTargetFrequencyHighBytes
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelPitchBendTargetFrequencyLowBytes
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelFlags2
|
|
add hl, de
|
|
ld [hl], a
|
|
ld a, $1
|
|
ld hl, wChannelLoopCounters
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelNoteDelayCounters
|
|
add hl, de
|
|
ld [hl], a
|
|
ld hl, wChannelNoteSpeeds
|
|
add hl, de
|
|
ld [hl], a
|
|
ld a, e
|
|
cp $4
|
|
jr nz, .asm_7da9f
|
|
ld a, $8
|
|
ld [rNR10], a
|
|
.asm_7da9f
|
|
ld a, c
|
|
and a
|
|
jp z, Audio3_7db03
|
|
dec c
|
|
jp .asm_7d9db
|
|
|
|
Audio3_7daa8: ; 7daa8 (1f:5aa8)
|
|
ld a, $80
|
|
ld [rNR52], a
|
|
ld [rNR30], a
|
|
xor a
|
|
ld [rNR51], a
|
|
ld [rNR32], a
|
|
ld a, $8
|
|
ld [rNR10], a
|
|
ld [rNR12], a
|
|
ld [rNR22], a
|
|
ld [rNR42], a
|
|
ld a, $40
|
|
ld [rNR14], a
|
|
ld [rNR24], a
|
|
ld [rNR44], a
|
|
ld a, $77
|
|
ld [rNR50], a
|
|
xor a
|
|
ld [wUnusedC000], a
|
|
ld [wDisableChannelOutputWhenSfxEnds], a
|
|
ld [wMuteAudioAndPauseMusic], a
|
|
ld [wMusicTempo + 1], a
|
|
ld [wSfxTempo + 1], a
|
|
ld [wMusicWaveInstrument], a
|
|
ld [wSfxWaveInstrument], a
|
|
ld d, $a0
|
|
ld hl, wChannelCommandPointers
|
|
call FillAudioRAM3
|
|
ld a, $1
|
|
ld d, $18
|
|
ld hl, wChannelNoteDelayCounters
|
|
call FillAudioRAM3
|
|
ld [wMusicTempo], a
|
|
ld [wSfxTempo], a
|
|
ld a, $ff
|
|
ld [wStereoPanning], a
|
|
ret
|
|
|
|
; fills d bytes at hl with a
|
|
FillAudioRAM3: ; 7dafd (1f:5afd)
|
|
ld b, d
|
|
.loop
|
|
ld [hli], a
|
|
dec b
|
|
jr nz, .loop
|
|
ret
|
|
|
|
Audio3_7db03: ; 7db03 (1f:5b03)
|
|
ld a, [wSoundID]
|
|
ld l, a
|
|
ld e, a
|
|
ld h, $0
|
|
ld d, h
|
|
add hl, hl
|
|
add hl, de
|
|
ld de, SFX_Headers_3
|
|
add hl, de
|
|
ld e, l
|
|
ld d, h
|
|
ld hl, wChannelCommandPointers
|
|
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, wChannelSoundIDs
|
|
add hl, bc
|
|
ld a, [wSoundID]
|
|
ld [hl], a
|
|
pop af
|
|
cp $3
|
|
jr c, .asm_7db46
|
|
ld hl, wChannelFlags1
|
|
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, [wSoundID]
|
|
cp $14
|
|
jr nc, .asm_7db5f
|
|
jr .asm_7db89
|
|
.asm_7db5f
|
|
ld a, [wSoundID]
|
|
cp $86
|
|
jr z, .asm_7db89
|
|
jr c, .asm_7db6a
|
|
jr .asm_7db89
|
|
.asm_7db6a
|
|
ld hl, wChannelSoundIDs + CH4
|
|
ld [hli], a
|
|
ld [hli], a
|
|
ld [hli], a
|
|
ld [hl], a
|
|
ld hl, wChannelCommandPointers + CH6 * 2 ; sfx noise channel pointer
|
|
ld de, Noise3_endchannel
|
|
ld [hl], e
|
|
inc hl
|
|
ld [hl], d ; overwrite pointer to point to endchannel
|
|
ld a, [wSavedVolume]
|
|
and a
|
|
jr nz, .asm_7db89
|
|
ld a, [rNR50]
|
|
ld [wSavedVolume], a
|
|
ld a, $77
|
|
ld [rNR50], a
|
|
.asm_7db89
|
|
ret
|
|
|
|
Noise3_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
|
|
|
|
Audio3_Pitches: ; 7dba3 (1f:5ba3)
|
|
dw $F82C ; C_
|
|
dw $F89D ; C#
|
|
dw $F907 ; D_
|
|
dw $F96B ; D#
|
|
dw $F9CA ; E_
|
|
dw $FA23 ; F_
|
|
dw $FA77 ; F#
|
|
dw $FAC7 ; G_
|
|
dw $FB12 ; G#
|
|
dw $FB58 ; A_
|
|
dw $FB9B ; A#
|
|
dw $FBDA ; B_
|
|
|
|
|