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furnace/papers/doc/7-systems/ym2612.md
tildearrow 45b6c19867 rename system to platform 
easier to understand
2022-01-16 01:17:30 -05:00

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Yamaha YM2612

one of two chips that powered the Sega Genesis.

effects

  • 10xy: set LFO parameters.
    • x toggles the LFO.
    • y sets its speed.
  • 11xx: set feedback of channel.
  • 12xx: set operator 1 level.
  • 13xx: set operator 2 level.
  • 14xx: set operator 3 level.
  • 15xx: set operator 4 level.
  • 16xy: set multiplier of operator.
    • x is the operator (1-4).
    • y is the mutliplier.
  • 17xx: enable PCM channel.
    • this only works on channel 6.
  • 18xx: toggle extended channel 3 mode.
    • 0 disables it and 1 enables it.
    • only in extended channel 3 system.
  • 19xx: set attack of all operators.
  • 1Axx: set attack of operator 1.
  • 1Bxx: set attack of operator 2.
  • 1Cxx: set attack of operator 3.
  • 1Dxx: set attack of operator 4.