请问在LINUX下对计算机端口操作应该用什么函数??急!!!!!!急!!!!!

bluesnow

我想对一块D/A转换板进行操作.在DOS中可用outportb(addr,num)进行操作,对某一端口地址写值.可在LINUX的C中无该函数.谁能告诉我在LINUX下的C语言中与之对应功能的函数是哪个在哪个库里啊!!!!

kenix

#include <asm/io.h>

unsigned inb(unsigned port);
void outb(unsigned char byte, unsigned port);
unsigned inw(unsigned port);
void outw(unsigned short word, unsigned port);
unsigned inl(unsigned port);
void outl(unsigned doubleword, unsigned port);