PC speaker beep code recorder?

Does this sound feasible? Use an arduino to build a gadget make PC boot time "beep codes" have a visual indication on something like an LCD display rather than merely beeping. You could even build in a table to translate the beep codes to meaningful names for you particular motherboard. Just a random silly idea I had. I doubt if I'd ever actually do it, but just wondered if it was possible (or if someone has already done it?)