Gyruss
Data
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727D: Tune data channel 1
Byte
Purpose
$00
$00 for tone/noise else mute
$01
LSB of ...
$02
MSB of ...
$03
Frequency LSB
$04
Bits 4-7 attenuation, bits 0-3 frequency MSB or noise value
$05
Countdown until next note
$06
Attenuation. Initialized to $50
$07
Countdown for when to increase attenuation
$08
Speed. Initialized to $05
$09
Countdown for relative loops
tune_data_buffer_1
727D
DEFB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00
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