AT&T Co has sold over 550 of its 80386-based 6386 PC Workgroup systems to Ramada Inc, owners of the Remada and Renaissance chains of motor inns and hotels throughout the United States and Canada. The micros, which run the QNX Unix-like operating system from Quantum Software Systems Ltd of Ontario, Canada, will network with Ramada’s RoomFinder III reservations system, based in Phoenix, Arizona. Each system will support up to five terminals. QNX is a distributed processing Unix-like operating system for Intel-based hardware.