Routines
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A314: Send data for tone channel to PSG
Used by the routine at all_channels_data_to_psg.
Input
A Mute operation for channel
C Attenuation operation for channel
D Tone operation for channel
(IX+$00): $00 for tone else mute
tone_data_to_psg A314 LD E,(IX+$00) Get byte 0
A317 INC E If byte 0 was 0 then this is not 0
A318 JR NZ,attn_and_freq_to_psg Jump for tone
A31A OUT ($FF),A Mute
A31C RET
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