lizhi.asm

两个无符号数的相除

        DATA  SEGMENT
       DATA1  DB        3,9,6,9,5
       DATA2  DB        2,8,4,8,2
       DATA3  DB        'bei jian shu:',0DH,0AH,'$'
       DATA4  DB        'jian shu:',0DH,0AH,'$'
       DATA5  DB        'result:',0DH,0AH,'$'
       DATA7  DB        'over press any key',0DH,0AH,'$'
       DATA8  DB        5 DUP(?)

        DATA  ENDS


      MSTACK  SEGMENT   STACK
         STT  DB        50 DUP(?)
         TOP  EQU       LENGTH STT
      MSTACK  ENDS
        CODE  SEGMENT
        MAIN  PROC      FAR
              ASSUME    CS:CODE,DS:DATA,SS:MSTACK

      START:
              MOV       AX,MSTACK
              MOV       SS,AX
              MOV       SP,TOP
              PUSH      DS
              SUB       AX,AX
              PUSH      AX
              MOV       AX,DATA
              MOV       DS,AX
              CALL      XIANSHI
              CALL      JIAN
              CALL      SHUCHU
        MAIN  ENDP

              JIAN      PROC NEAR
              MOV       DI,OFFSET DATA1
              MOV       BX,OFFSET DATA2
              MOV       BP,OFFSET DATA8
              MOV       CX,5
         L1:  MOV       DH,[DI]
              MOV       DL,[BX]

              CMP       DH,DL
              JL        JIA
              SUB       DH,DL
              MOV       [BP],DH
              INC       BP
              INC       DI
              INC       BX
              DEC       CX
              CMP       CX,0
              JE        L7
              JMP       L1
              JIA:      ADD  DH,10
              SUB       DH,DL
              MOV       [BP],DH
              INC       BP
              INC       DI
              SUB       DI,1
              INC       BX
              DEC       CX
              CMP       CX,0
              JE        L7
              JMP       L1
         L7:  RET
              JIAN      ENDP



     XIANSHI  PROC      NEAR
              MOV       CX,5
              MOV       DX,OFFSET DATA3
             
              MOV       AH,09
              INT       21H
              MOV       DI,OFFSET DATA1+4
         L2:  MOV       BL,[DI]
              MOV       DL,BL
              AND       DL,0FH
              ADD       DL,30H

              MOV       AH,02
              INT       21H
              DEC       DI
              DEC       CX
              CMP       CX,0
              JNE       L2
              MOV       CX,5
              MOV       DX,OFFSET DATA4
              MOV       AH,09
              INT       21H
              MOV       DI,OFFSET DATA2+4
         L3:  MOV       BL,[DI]
              MOV       DL,BL
              AND       DL,0FH
              ADD       DL,31H

              MOV       AH,02
              INT       21H
              DEC       DI
              DEC       CX
              CMP       CX,0
              JNE       L3
              MOV       AH,07
              INT       21H
              RET
     XIANSHI  ENDP


      SHUCHU  PROC      NEAR
              MOV       CX,5
              MOV       DX,OFFSET DATA5
              MOV       AH,09
              INT       21H
              MOV       DI,OFFSET DATA8+4
         L4:

              MOV       BL,[DI]
              AND       BL,0FH
              ADD       BL,30H
              MOV       DL,BL

              MOV       AH,02

              INT       21H
              DEC       DI
              DEC       CX
              CMP       CX,0
              JNE       L4
              MOV       DX,OFFSET DATA7
              MOV       AH,09
              INT       21H
              MOV       AH,07
              INT       21H
      SHUCHU  ENDP
        CODE  ENDS
              END       START