data segment qq dw 1234h data ends stack1 segment para stack dw 10 dup(?) stack1 ends code1 segment assume cs:code1,ds:data,ss:stack1

mov ax,data mov ds,ax start: mov bx,qq mov si,bx mov ah,09h mov dx,[si] int 21h

mov ah,4ch int 21h code1 ends end start

因为1234H不是字符串，显示结果可能是乱码。

可以用ah=2
lp:
mov dl,[si]
mov ah,2
int 21
mov cx,4
mov dl,13
mov ah,2
int 21
mov dl,10
int 21
loop lp

可以用ah=2
lp:
mov dl,[si]
mov ah,2
int 21
mov cx,4
mov dl,13
mov ah,2
int 21
mov dl,10
int 21
loop lp
？？？