检测点9.2
补全编程，利用jcxz指令，实现在内存2000H段中查找第一个值为0的字节，找到后
将它的偏移地址存储在dx中。
assume cs:code
code segment
start: mov ax,2000H
mov ds,ax
mov bx,0
s: ___________________
____________________
_______________________
_______________________
jmp short s
ok: mov dx,bx
mov ax,4c00h
int 21h
code ends
end start
回答:
mov cl,[bx]
mov ch,0
jcxz ok
inc bx |
