cs push \ copy code segment to data segment
   ds pop

   ax 0 # mov
\ print number
\ in: ax = number
\ clobbers: ax, bx, cx, dx
   cx 10 # mov
   bx bx xor

:> moredigits
   bx inc 
   dx dx xor
   cx div
   dx push
   ax 0 # cmp
   moredigits jne

:> moredigits
   dx pop
   dl 48 # add
   ax &h0200 # mov
   &h21 int
   bx dec
   moredigits jne

   0 .EXIT

   cx 11 # mov