timer_defines.h

来自「操作系统试验！通过这个试验」· C头文件 代码 · 共 21 行

/*
 * Name: timer_defines.h
 * Date: January 15th 2003
 * Author: Steve Muckle <[e-mail]>
 *
 * Description:
 * 
 * Important defines for the timer.
 */
#ifndef TIMER_H
#define TIMER_H

#define TIMER_RATE 1193182

#define TIMER_IDT_ENTRY 0x20
#define TIMER_PERIOD_IO_PORT 0x40
#define TIMER_MODE_IO_PORT 0x43
#define TIMER_SQUARE_WAVE 0x36

#endif