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D5AE: Reset sound data channels
Used by the routines at 947A, 97C3, 97EA, A4E7, C745 and D871.
D5AE LD A,$38 Set sound data buffer to disable noise and tone
D5B0 LD ($D855),A
D5B3 CALL $D682 Send command to the mixer (disable noise and tone)
D5B6 LD HL,$D832 Reset channels data
D5B9 LD DE,$D833
D5BC LD BC,$001D
D5BF LD (HL),$00
D5C1 LDIR
D5C3 LD IX,$D832 Initialise channels at D832
D5C7 LD (IX+$00),$FF
D5CB LD (IX+$08),$FF
D5CF LD (IX+$10),$FF
D5D3 CALL $D5D7 Reset sound volume channels
D5D6 RET
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