Nebula Model 2 TEST v0.6

New version of this Model 2 emu.

games suported:

MODEL 2B:

Dead or Alive
Dynamite baseball
Dynamite Cop
Fighting vipers
Gunblade NY
Indianapolis
Last Bronx
Pilot kids
Sonic Championship
Super GT 24h
Virtua Striker
Virtual-ON
Zerogunner

MODEL 2C:

Behind enemy lines
Sega Touring car championship