说明：  这是一个用A51编写的89C51汇编语言程序，程序中实现了对89C51串行口的控制，可以用来和X86进行通迅实验。从程序中还可以学到各种中断程序的编程技术。
(This is a preparation using the A51 89C51 assembly language procedures, procedures for achieving the right 89C51 Serial control, and the X86 can be used for communications experiments. From a procedural also can learn all the procedures interrupted programming technology.)