本程序是关于一个异步电机的一个程序，注明是一个比较难懂，因为是用汇编编的，可以作为参考，不足之处，还请见谅啊！-This program is a stepper motor on a program, an indication of a more difficult, because it is compiled with the assembly can be used as reference, the inadequacies, but please forgive me ah!