程序首先定义一个hello的函数调用int 21h mov ah ，09来显示字符串，ds:dx定义字符串位置 来使用一个80×25的界面使整个程序更加美观 游戏主程序调用BIOS int 10 的9号功能实现对目标文本的颜色和定位，。游戏主程序可以用int 16 mov ah，00从键盘读取输入的字符在调用int 21 mov ah，01 让键盘输入显示在屏幕中 al＝输入的字符，用cmp指令对输入的文本和目标文本进行比较，再利用选择语句将错误的输入字符显示为红色，将正确的输入字符显示为绿色。在整个字符串结束后直接退到dos环境-procedures hello first definition of a function call int 21 hours mov ah, 09 to show string, ds : dx definition string position to use a 80 x 25 interface to make the whole process more attractive game int main program called BIOS on the 9th of 10 functions to achieve the goal of text color and positioning. Game int main program can use 16 mov ah, 00 input from the keyboard to read characters in the call int 21 mov ah, 01 for keyboard input the screen were al = input characters using cmp directive of input text and the text more goals and used the wrong choice of words to the imported characters shown as red, to the correct input characters shown as green. The entire string after the end of direct retreated dos environment