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# Sega PSG instrument editor
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2023-09-10 13:16:55 -04:00
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the instrument editor for Sega PSG (SMS, and other TI SN76489 derivatives) consists of these macros:
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- **Volume**: volume sequence.
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- **Arpeggio**: pitch sequence.
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- **Duty**: noise mode.
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- `0`: short noise; preset frequencies.
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- `1`: long noise; preset frequencies.
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- `2`: short noise; use channel 3 for frequency.
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- `3`: long noise; use channel 3 for frequency.
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- **Panning**: output for left and right channels.
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- only on Game Gear!
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- **Pitch**: fine pitch.
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- **Phase Reset**: trigger restart of waveform.
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