Game Boy

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

it has stereo sound, two pulse channels, a wave channel and a noise channel.

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 1 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.

this chip uses the Game Boy instrument editor.

the following options are available in the Chip Manager window:

Disable anti-click: waveform switching requires a phase reset, which may cause clicks. Furnace uses a wave-position predicting algorithm to minimize these clicks. enable this option to disable it.
Chip revision: sets the chip model to use. most of these lack audible difference, but Game Boy Advance fixed the wave channel's inversion.
Wave channel orientation: allows you to set how is wave data written.
- in Game Boy:
  - Exact data: wave data is written as-is. it will appear inverted in the output.
  - Exact output: wave data is inverted so it appears correctly in the output.
- in Game Boy Advance:
  - Normal: wave data is written as-is.
  - Inverted: guess!
Pretty please: only for compatibility with Synchronize.dmf. do not use.