Input a byte (_inp), a word (_inpw), or a double word (_inpd) from a port.<br>int _inp( unsigned short port );<br>unsigned short _inpw( unsigned short port );<br>unsigned long _inpd( unsigned short port );<br><br>比如从0x2A8 读一个字节用<br>i=_inp(0x2A8); 其中i为读出的值