Int 2F Fn A902  - Metztsr.com - Set Metz Ctrl-alt-del Flag                 [U]

   AX = A902h
   BL = new value
       00h Ctrl-Alt-Del not allowed
       else Ctrl-Alt-Del allowed (startup default is 01h)
   CF set

Return: CF clear if successful
       AX = 97FFh
   CF set if not resident

See Also: AX=A903h