furnace/doc/7-systems/game-boy.md
Electric Keet 81ab2acb2c Lots of little cleanup.
Trying for more consistency and clarity, especially for quick reference.
2023-06-25 00:05:30 -07:00

565 B

Game Boy

the Nintendo Game Boy is one of the most successful portable game systems ever made.

with stereo sound, two pulse channels, a wave channel and a noise one it packed some serious punch.

effects

  • 10xx: change wave.
  • 11xx: set noise length.
    • 0: long
    • 1: short
  • 12xx: set duty cycle.
    • 0: 12.5%
    • 1: 25%
    • 2: 50%
    • 3: 75%
  • 13xy: setup sweep. pulse channels only.
    • x is the time.
    • y is the shift.
    • set to 0 to disable it.
  • 14xx: set sweep direction. 0 is up and 1 is down.