This is a venue for improving and extending the current code. It could be added relatively easily to the current system. A few assembly-language routines would need to be defined that use the prot_to_real and real_to_prot mechanism. While not improving the protected mode utilization, it would add disk subsystem functionality to the system. Alternatively, protected mode interfaces could be written for disk I/O. Either way, the existing code could be extended in a straightforward way.