(** Power up sequence *)
let power_up cartridge =
  (** Nintendo logo scrolling *)
  if not (Cartridge.check_nintendo_logo cartridge)
  then print_endline "Invalid ROM."
  else print_endline "Valid ROM."

let () =
  if Array.length Sys.argv < 2
  then print_endline "Please specify a ROM.";

  let cartridge = Cartridge.read_cartridge Sys.argv.(1) in
  match cartridge with
  | None -> print_endline "Invalid ROM file."
  | Some c -> power_up c