 The original design of both the technically complicated hardware interface and disk operating system came from Lloyd Sponenburgh and Roy Southwick of Fiscal Information, Inc., a now-defunct Florida-based turnkey vendor of minicomputer-based medical information systems.Fiscal demonstrated a working prototype in 1984 and starting advertising the system for sale early in 1985.It immediately found a niche with some Commodore software developers and bulletin board SysOps.