void outport(int port, int word)

unsigned outpw(unsigned port, unsigned word)

void outportb(int port, unsigned char byte)

int outp(unsigned port, int byte)

void keep(unsigned char status, unsigned size)

void _dos_keep(unsigned char status, unsigned size)

int intdos(union REGS *in_regs, union REGS *out_regs)

int intdosx(union REGS *in_regs, union REGS *out_regs, struct SREGS *segregs)

int inp(unsigned port)

int inport(int port)

unsigned inpw(unsigned port)

unsigned char inportb(int port)