| Name | Description |
|---|---|
| AppleII_SoundFunction1_FreqUpDown | SoundFunction1: frequency up/down |
| AppleII_SoundFunction2_SymmetricWave | SoundFunction2: symmetric wave (~) |
| AppleII_SoundFunction3_AsymmetricWave | |
| AppleII_SoundFunction4_Polyphone | SoundFunction4: polyphone (2 voices) |
| AppleII_SoundFunction5_Noise | SoundFunction5: periodic noise |