1-3.asm

来自「masm,debug,link还有上课时的源程序」· 汇编 代码 · 共 31 行

data segment para

data ends

stack segment para stack 'stack'
        db 64 dup(?)
stack ends

code segment  public
        assume cs:code, ds:data,ss:stack,es:data
start:
        ;Begin
        mov ax,data
        mov ds,ax
        ;Add your code here

        mov bx,1234h
        and bx,1111b
        not bx
        mov cl,8
        shl bx,cl
        and ax,1111000011111111b
        add ax,bx

        ;exit to DOS
        mov ah,4ch
        int 21h

code ends
        end start