Changes
PSG
,/* Chip Variants */
The SSG has also been integrated as a component inside every chip of the Yamaha OPN family.
The AY-3-8930, used in the Covox Sound Master soundcard on PCs, is an a register-compatible evolution of the AY-3-8910:
* The pulse width can be changed from square to 8 other duty cycles
* There are 3 independent envelope generators, 1 for each channel
