hal_ppmc.c

并口驱动

//#include <sys/io.h>
#include <asm/io.h>
//#include <stdio.h>
#define SPPDATA 0x378//定义各寄存器地址
#define SPPSTAT 0x379
#define SPPCNTL 0x37A
#define EPPADDR 0x37B
#define EPPDATA 0x37C 

int main(void)
{
//unsigned char b=0x12;	

	iopl(3);
 	outb(0x04,0x37A);
//	b=inb(0x37A);
//	

	while(1)
{
	//printf("%x",b);
		outb(0xF0,0x37C);//写数据
}
		
	return 0;
}