Question

求大神帮帮忙，给一下汇编答案

设变量VAR中存放的十个字符的ASCII码,编程将位于0,2,4,6,8位移量的字节与位于1,3,5,7,9位移量的字节互换，然后将这十个字符依次显示输出。

Answer 1

        CODE  SEGMENT
              ASSUME    CS:CODE

         VAR  DB        'abcdefghij'

      START:  PUSH      CS
              POP       DS
              PUSH      CS
              POP       ES

              LEA       SI,VAR
              MOV       CX,5
         @1:
              MOV       AL,[SI]
              XCHG      AL,[SI+1]
              MOV       [SI],AL
              ADD       SI,2
              LOOP      @1

              MOV       CX,10
              LEA       SI,VAR
              CLD
              MOV       AH,2
         @2:
              LODSB
              MOV       DL,AL
              INT       21H
              LOOP      @2

              MOV       AH,4CH
              INT       21H
        CODE  ENDS
              END       START