SiS_SetReg(SISIOADDRESS port, USHORT index, USHORT data)
SiS_SetReg(SISIOADDRESS port, unsigned short index, unsigned short data)
SiS_SetReg(SISIOADDRESS port, USHORT index, USHORT data){   OutPortByte(port,index);   OutPortByte(port + 1,data);}