extern void SPUwriteDMAMem(unsigned short *, int);
extern void SPUreadDMAMem(unsigned short *, int);
extern void SPUplayADPCMchannel(void *);
extern void SPUwriteDMAMem(unsigned short *, int);
extern void SPUreadDMAMem(unsigned short *, int);
extern void SPUplayADPCMchannel(void *);