APIRET UltraSetNVoices(int);
APIRET UltraEnableOutput(void);
APIRET UltraDisableOutput(void);
APIRET UltraBlockTimerHandler1();
APIRET UltraBlockTimerHandler2(); 
APIRET UltraUnblockAll(void);
APIRET UltraStartTimer(int, int);
APIRET UltraStopTimer(int);
APIRET UltraSetBalance(int, int);
APIRET UltraSetFrequency(int, int);
APIRET UltraSetAll(int, char, int, int, unsigned char, unsigned char);
APIRET UltraPokeData(long, int);
APIRET UltraPeekData(int *);
APIRET UltraMemAlloc(unsigned long, unsigned long *);
APIRET UltraMemFree(int size, int location);
APIRET UltraMemInit(void);
APIRET UltraSizeDram(int *);
APIRET UltraStartVoice(int, unsigned int, unsigned int, unsigned int, unsigned char);
APIRET UltraStopVoice(int);
APIRET UltraVectorLinearVolume(int, unsigned int, unsigned char, unsigned char);
APIRET UltraDownload(void *, unsigned char, unsigned long, unsigned int, int);
APIRET UltraGetAccess(void);
APIRET UltraReleaseAccess(void);
APIRET UltraGetDriverVersion(int *);