Changes
PSG
,/* Chip Variants */
The AY-3-8930, used in the Covox Sound Master soundcard on PCs, is an evolution of the AY-3-8910:
* The pulse width can be is changed from square to four other a variable (4-bit) duty cyclescycle
* There are 3 independent envelope generators, 1 for each channel
* The amplitude control is more accurate (5-bit instead of 4-bit)
