摘要：
int speaker(unsigned int freq,unsigned int delay){ static int flag=0,bit; if(flag==0) { flag=1; iopl(3); } outb(0xb6,0x43); outb((freq & 0xff),0x42); outb((freq >> 8),0x42); bit=inb(0x61); outb(3 | bit,0x61); usleep(10000*delay); outb(0xfc | bit,0x61);}voi... 阅读全文
posted @ 2013-07-27 14:32
Sankye
阅读(426)
评论(0)
推荐(0)
浙公网安备 33010602011771号