data segment to extra segment

//data segment to extra segment
data segment
  array db 01h,10h,02h,20h,03h,30h,04h,40h,05h,50h
data ends

extra segment
 dest db 00h
extra ends

code segment
assume cs:code,es:extra,ds:data
start: mov ax,data
       mov ds,ax

       mov bx,extra
       mov es,bx

       lea si,array
       lea di,dest

       mov cl,0Ah
   up: mov al,[si]
       mov es:[di],al
       inc si
       inc di
       dec cl
       jnz up

       int 03h
     code ends
 ends start