Why doesn have sound emulation?
There can be a few reasons: (1) The sound is part of the game’s encryption, which has not yet been cracked. Like Irem M-92 stuff, where you can have the graphics but the protection stops the sound from working. (2) The sound chips are complicated. Like Primal Rage (and all late Atari games) use Atari’s CAGE sound system, which is like Killer Instincts DCS sound system but better, or the Sega SCSP chip used in the later Model 2/3 stuff and Saturn/STV, which is frighteningly complicated, or the OPL4 used in Strikers 1945 II, which is of similar complexity. (3) The sound roms are not dumped, or were dumped badly. Happens sometimes. (4) The sound CPU/chip is unknown, and/or custom. Like in most late Namco games, including the System 11 and 12 stuff, where both chips are totally unknown and bear no resemblance to any other sound chip/cpu out there. Even if the chip is relativly simple it makes the emulation almost impossible without having an actual board to reverse engineer.
