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furnace/doc/4-instrument/psg.md
Electric Keet 6f0330f04c A whole mess of small doc updates and fixes. 
Finally, proper macro images! And lots of little nitpicks and clean-up of text.
2024-10-09 23:52:49 -05:00

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Sega PSG instrument editor

the instrument editor for Sega PSG, SMS, and other TI SN76489 derivatives consists of these macros:

  • Volume: volume sequence.
  • Arpeggio: pitch sequence.
  • Duty: noise mode.
    • 0: short noise; preset frequencies.
    • 1: long noise; preset frequencies.
    • 2: short noise; use channel 3 for frequency.
    • 3: long noise; use channel 3 for frequency.
  • Panning: output for left and right channels.
    • only on Game Gear!
  • Pitch: fine pitch.
  • Phase Reset: trigger restart of noise only.