参考程序如下: 调试程序,执行到最后add bh,x1并回答: 1)x1的段地址0B59 2)x1 的偏移地址0000 3)x2的段地址0B59 4)x2 的偏移地址0010 5)(x1+1)=34 (x2+1)=78 (x2+2)=0C,(x3+1)=00,(x3+2)=0D 6) (ds)=0B59 (cs)=0B5A 7) AX=0B59 BX=1800 AH=0B AL=59 Bh=18 BL=00 data segment x1 db 12,34h x2 db 56h,78h x3 dw 12,13 data ends Code Segment assume cs:code,ds:code org 100h begin: mov ax,data mov ds,ax mov bh,12 add bh,x1 Code ends end begin