BBDOS: A Disk Operating System for the Aerco FD-ZX Interface

ZX81/TS1000 owners who have been using the Aerco FD-ZX Disk Drive Interface owe Jerry Chamkis and his Texas staff a debt of gratitude for providing them with a reliable, high speed, mass storage system. But even as nice as the FD-ZX unit is, its disc operating system (DOS) leaves much to be desired.