一个用汇编程序菜单功能来实现驱动CD-ROM，是一个供大家学习汇编硬件接口编程的实例，具体功能还能扩展，大家自己琢磨吧-a compilation of procedures used to achieve functional menu-driven CD-ROM is a compilation of learning for all hardware interface programming examples, specific functions can expand, we all