第一个程序：Hello World

assume cs:code, ds:data, ss:stack

data segment
f1 db 'Hello World... $'

data ends

stack segment
db 200 dup (0)

stack ends

code segment

start:
mov ax, data
mov ds, ax			; setting the dx register

lea dx, f1
mov ah, 09H			; set ah to 09H
int 21H				; trigger the the 21th interrupt

mov ax, 4c00H
int 21H

code ends

end start

----------------------------------------------------------------------------------------------------------

# add at 2015.12.14

效果截图 :