ws9_3.asm

汇编语言-王爽 源代码 加 卜艳萍版源代码

              ASSUME    CS:CODESG

      CODESG  SEGMENT
              MOV       AX,4C00H
              INT       21H
    START:

              MOV       AX,0
          S:
              NOP
              NOP
              MOV       DI,OFFSET S
              MOV       SI,OFFSET S2
              MOV       AX,CS:[SI]
              MOV       CS:[DI],AX    ;将标号s2处的指令复制到标号s处
                                      ;即JMP SHORT S1的作用为向前移10个字节

         S0:
             JMP       SHORT S        ;向前移16字节

         S1:
              MOV       AX,0
              INT       21H
              MOV       AX,0
         S2:
             JMP       SHORT S1        ;向前移10个字节
             NOP
      CODESG  ENDS

              END       START