io.h

是经典的UNIX的部分源代码

#ifndef _PYOS_IO_H_
#define _PYOS_IO_H

/* 读端口 */
unsigned char io_read_from_io_port( unsigned short port_number ) ;

/* 写端口 */
void io_write_to_io_port( unsigned short port_number , unsigned char data ) ;

#endif