本文为《汇编语言程序设计》0904小节例程。点击进课程主页。

jcxz指令

assume cs:codesgcodesg segmentstart: mov ax,2000H       mov ds, ax       mov bx,0    s: mov cx, [bx]       jcxz ok       inc bx       inc bx        jmp short s   ok: mov dx, bx       mov ax, 4c00H       int 21Hcodesg endsend start

loop指令

assume cs:codesgcodesg segmentstart: mov cx, 6h       mov ax,10h    s: add ax, ax       loop s       mov ax, 4c00H       int 21Hcodesg endsend start