用汇编语言实现的 音乐演奏 这是一个音乐程序，按大写字母“A”，唱乐曲“玛丽有只小羔羊”； 按大写字母“B”，唱乐曲“太湖船” 按大写字母“C”，唱乐曲“祝福歌” 按"X"鍵，退出-Using assembly language to achieve this is a music performance music program, according to capital letters A , singing songs, Mary had a lamb by the