This is a CPS2 JAMMA+ board on Grey and Green B only. Wiring details are as any other Street Fighter games with the extra player harness (CPS2 layout).
The game was released after Alpha 2 with additions like Super Sakura, Evil Ryu, Super SFII characters, Survival Mode, Dramatic Battle and new moves.
The most noticeable are the two extra modes of play.
Survival mode pits you up against ALL the fighters in a one round battle on one energy bar which gets replenished depending on how well you perform in that stage.
Dramatic Battle involves choosing ANY 2 characters against 4 CPU fighters (Adon, Sagat, Bison and SHIN Gouki).
This is very similar to SF Zero 3 BUT the difference is that the SUPER level guage NEVER depletes.
The addition of new moves sees a new level 3 attack for Guy, a Super taunt for Sagat and more.
Settings are accessed via the TEST SWITCH on the B board for configurations.