；计算a段中各个内存值加上b段各个内存值后存放到c段中 assume cs:codea segment    db 1,2,3,4,5,6,7,8a endsb segment    db 1,2,3,4,5,6,7,9b endsc1 segment    db 0,0,0,0,0,0,0,0c1 endscode segments:    mov ax,a   mov ds,ax  ;use ds point to a seg   mov ax,c1   mov es,ax  ;use es point to c seg      mov cx,4   mov bx,0p1:   mov ax,[bx]   mov es:[bx],ax   add bx,2   loop p1   mov ax,b   mov ds,ax  ;use ds to point b seg   mov cx,4   mov bx,0p2:mov ax,[bx]   add es:[bx],ax   add bx,2   loop p2      mov ax,4c00h   int 21h   code endsend s

（1）ds:[bx]所指向的物理地址即可读也可写；

（2）可以通过定义的段的标号作为该段的引用地址

 

可以手动指定数据段和栈段的位置：

assume cs:codeseg,ss:b,ds:a ;注意：这里虽然这么写，但是CPU不会直接把b当成栈，把a当成数据段，还是需要手动指定a segment    dw 1,2,3,4,5,6,7,8,9,0ah,0ch,0dh,0eh,0fh,0ffha endsb segment    dw 0,0,0,0,0,0,0,0b endscodeseg segmentstart:    mov ax,a    mov ds,ax ;use ds to point to a seg        mov ax,b    mov ss,ax ;use ss to point to b seg,make b seg as a stack    mov sp,16    mov bx,0        mov cx,8s:    push [bx]    add bx,2    loop s        mov ax,4c00h    int 21h    codeseg endsend start