我用这个程序实现 x+y-3  送到 r中，怎么输出的是 20个 k呀 ！
麻烦帮我修改以下！
谢谢了！
data          SEGMENT
              arrayx DW        1,5,6,78,9
              arrayy DW        2,5,4,8
data        ENDS
extra         SEGMENT                  
              arrayr DW        20 DUP(?)
extra ENDS
code          SEGMENT
              ASSUME    CS:code,DS:data,ES:extra
start:              
              MOV       AX,data
              MOV       DS,AX
              MOV       BX,extra
              MOV       ES,BX
              LEA       SI,arrayx
              MOV       AX,[SI]
              CALL      compute
              MOV       CX,5
              INC       SI
              DEC       CX
              
                     
              MOV       CX,20
              LEA       SI,arrayr
              MOV       AH,02h
NExt:         
              MOV       BX,ES:[SI]
              MOV       arrayr,BX
              INT       21h
              INC       SI
              LOOP      NExt
              MOV       AH,4ch
              INT       21h
compute       PROC      NEAR
              LEA       DI,arrayy
              MOV       CX,4
              ADD       AX,[DI]
              ADC       DX,0
              SUB       AX,3
              SBB       DX,0
compute ENDP
              
again:
              INC       DI
              DEC       CX
              JZ        done
done:         
              RET
code          ENDS
    END   start