boot.s

   1         bits 16 ; boot sectors run in real mode
   2         org 7c00h ; boot sector is loaded at 0x7c00
   3
   4         mov di, printing_numbers
   5         call print
   6
   7         mov dx, 0DEADh ; number to print
   8         call print_word
   9         mov dx, 0BEEFh
  10         call print_word
  11
  12         mov di, goodbye
  13         call print
  14
  15         jmp $
  16
  17 printing_numbers: db "Printing some random hex numbers", 0
  18 goodbye: db "Thank you for your attention", 0
  19
  20 %include "print.s"
  21
  22         times 510-($-$$) db 0 ; fill with 0 until 0x1fc is reached
  23         dw 0AA55h ; BIOS MBR signature