【资源下载】百度网盘下载地址如下：
https://docs.qq.com/doc/DTlRSd01BZXNpRUxl

 

CODE SEGMENT
    ASSUME CS:CODE
    START:     
            MOV AL,01H           
            MOV BX,00FAH
            MOV AH,0AH
            JMP OBA0
       OBA0:
            MOV DX,00H
            OUT DX,AL
            JMP OBA1
       OBA1:           
            MOV DX,02H  
            OUT DX,AL
            MOV CX,9FFFH
            LOOP $
            ROL AL,1
            DEC BX
            CMP BX,00F2H
            JZ OBA4
            JMP OBA0
        CHU:
            MOV AL,00FEH
            JMP OBA2
       OBA2: