Sony ZN-2 hardware
Main CPU : PSX (@ 16.9344 Mhz)
Sound CPU : Zilog Z80 (@ 8 Mhz)
Sound Chips : SPU (@ 8 Mhz), Q-Sound (@ 4 Mhz)
Players : 2
Control : 8-way joystick
Buttons : 6
= >  LP,  MP,  HP
= >  LK,  MK,  HK
Street Fighter EX2 was shown at the 1998 AOU Amusement Expo show (February 1998), in Japan. It was then released in March 1998 in most regions; this game did not appear in the United States until May 1998.
Developed by Arika.
Pony Canyon / Scitron released a limited-edition soundtrack album for this game (Street Fighter EX2 - PCCB-00322) on June 17, 1998.
Here is the list of all versions :
JAPAN, ASIA, and HISPANIC releases.
ADDITIONAL NOTES :
The US version has the "Winners Don't Use Drugs" screen.
Play as Kairi and Shadowgeist :
Player's code - The total of each entry in the Score Ranking should be equal or more than 500,000 points (one character per entry so all characters must be in the ranking with 500,000 points each).
Operator's code - Turn on the machine and go to Test Mode, go to the Color Menu and input the following button sequence using the Player1 side : HP, LP, LK, HK, MP, LP, LK, MK, LK, MK, MP, LP, HK, MK, MP, HP once input, this message pops at the bottom of the screen : 'HERE COMES A NEW CHALLENGER' this message confirms that the code was input properly and Kairi and Shadowgeist are activated upon restart.
Play as Nanase and Garuda : These extra characters can only be activated only after Kairi and Shadowgeist are activated.
Player's code - The total accumulated points of all entries in the Score Ranking should add up to equal or more than 28,000,000 points (including Kairi and Shadowgeist).
Operator's code - Turn on the machine and go to the Test Mode screen, go to the Color Menu and input the following button sequence using the Player1 side : MK, HK, HP, MP, LK, HK, HP, LP, HK, LK, LP, HP, MK, LK, LP, MP once input, this message pops at the bottom of the screen : 'HERE COMES A NEW CHALLENGER' this message confirms that the code was input properly and Nanase and Garuda are activated upon restart.
Play as Unmasked Vega : Select Vega as your character and at every VS screen before the fight, hold Start+LP+MK+HP and when the match begins Vega will not be wearing a mask during the next fight.
See goodies section.