说明：  微机实验8259完整代码 1)了解8259A芯片的工作原理。学会使用8259A中断控制芯片实现对外部中断的响应和处理。 2)了解8259A内部结构和熟悉8086的接口逻辑。 3)掌握对8259A的初始化编程方法和8086是如何响应中断、退出中断的。
(Microcomputer experimental 8259 complete code 1) to understand the working principle of the 8259A chip. Learn to use the 8259A interrupt controller chip to achieve the external interrupt response and handling. 2) to understand the the 8259A internal structure and familiar with the 8086 interface logic. 3) master 8259A initialization programming method and 8086 is how to respond to the interrupt, quit interrupted.)