ASSUME    CS:CODE,DS:DATA,SS:STACK
        DATA  SEGMENT
              DB        '0101010101010101010101010101010101010101'    ;用于输出的数据
        DATA  ENDS
       STACK  SEGMENT ;嵌套循环，需存放cx中数据
              DW        0,0,0,0,0,0,0,0;
       STACK  ENDS
        CODE  SEGMENT
      START:
              MOV       AX,DATA
              MOV       DS,AX
              MOV       AX,0B800H
              MOV       ES,AX
              MOV       AX,STACK
              MOV       SS,AX
              MOV       SP,0010H
;设置段寄存器的指向，ds指向数据段，es指向显存，ss指向栈段，并
;初始化栈
              MOV       SI,0
              MOV       BX,0
              MOV       SI,0
              MOV       DI,0


              MOV       CX,25;设置循环次数，25行


          S:
              PUSH      CX  ;外循环中cx入栈

              MOV       CX,40 ;初始内循环次数
              MOV       DI,0
              MOV       BX,0
         S0:
              MOV       AL,[DI]
              MOV       BYTE PTR ES:[BX+SI],AL
              MOV       BYTE PTR ES:[BX+SI+1],2
              MOV       BYTE PTR ES:[BX+SI+80],AL
              MOV       BYTE PTR ES:[BX+SI+81],2
;往显存中放入数据
              INC       DI
              ADD       BX,2
              LOOP      S0;内循环
              ADD       SI,160;指向下一行
              POP       CX;外循环控制出栈
              LOOP      S;外循环
              MOV       AX,4C00H
              INT       21H
        CODE  ENDS
              END       START

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