autocad 编程 对autocad 开发软件的朋友提供 -autocad programming on the development of software autocad friends

要求按Q键返回操作系统，按其他键开始顺序显示256种ASCII字符。显示方法是每按一次键在屏幕左上右下的斜线上显示一串相同字符，下一次换下一个相邻字符（即从ASCII值0开始，每次值递增1）。并且要求每隔5秒屏幕上角显示一个笑脸字符，该笑脸字符交替变脸。-Requested by the Q key to return to the operating system, according to other key sequence shows the beginning of 256 kinds

编写一个在显示器上显示一个笑脸字符的程序，程序命令为HAPPY.ASM-Write a character to display a smiley face on the display program, the program command HAPPY.ASM