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furnace/papers/doc/7-systems/wonderswan.md
Natt Akuma 840a6fa306 Add WonderSwan support
2022-03-07 15:44:59 +07:00

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WonderSwan

A handheld console released only in Japan by Bandai. Designed by the same people behind Game Boy and Virtual Boy, it has lots of similar elements from those two systems in the sound department.

It has 4 wavetable channels, one channel could play PCM, the other has hardware sweep and the other could play noise.

effects

  • 10xx: change wave.
  • 11xx: setup noise mode (channel 4 only).
    • 0: disable.
    • 1-8: enable and set tap preset.
  • 12xx: setup sweep period (channel 3 only).
    • 0: disable.
    • 1-32: enable and set period.
  • 13xx: setup sweep amount (channel 3 only).
  • 17xx: toggle PCM mode (channel 2 only).