汇编:dd 伪指令

db: define byte            8bit

dw: define word          16bit

dd:  define dword(double word), 双字形   32bit

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

data segment
   dd 100001
   dw 100
   db 0

data ends

stack segment
  dw 0,0,0,0,0,0,0,0
stack ends

code segment
    start: mov ax, data
           mov ds, ax

           mov ax, stack
           mov ss, ax

 
           mov ax, ds:[0]
           mov dx, ds:[2]

           div word ptr ds:[4]
           mov ds:[6], ax
           mov ax, 4C00H
           int 21H 
code ends

end start