Shutting down computer with nasm

Question

Is it possible to shut down or kill the power (is there a difference?) to a computer from nasm. I know you can use this to reboot:

mov al, 0xFE
out 0x64, al
         


        

Answer 1

you can try this code:-

shutdown_sucess:
  mov ax, 5301h             ; Connect to the APM
  xor bx, bx
  int 15h
  je near continue_connection       ; Pass if connected
  cmp ah, 2
  je near continue_connection       ; Pass if already connected
  ret               ; Bail if fail

continue_connection:
  mov ax, 530Eh             ; Check APM Version
  xor bx, bx
  mov cx, 0102h             ; v1.2 Required
  int 15h
  ret