boot.s

   1         bits 16 ; boot sectors run in real mode
   2         org 7c00h ; boot sector is loaded at 0x7c00
   3
   4         mov dx, 0DEADh ; number to print
   5         mov cl, 0 ; column
   6         mov ch, 0 ; row
   7         call print_word
   8         mov dx, 0BEEFh
   9         mov cl, 0
  10         mov ch, 1
  11         call print_word
  12
  13         jmp $
  14
  15 %include "print.s"
  16
  17         times 510-($-$$) db 0 ; fill with 0 until 0x1fc is reached
  18         dw 0AA55h ; BIOS MBR signature