An AMPS receiver system utilizing a ZIF architecture and processing received forward link signals in the digital domain. The interactive program guide is preferably implemented using a microprocessor-controlled set-top box that is coupled to the viewer’s television set. The powertrain includes an engine that is selectively connectable to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. Thereafter, a second thermal oxide film is formed by carrying out high-temperature dry oxidation at a silicon substrate heating temperature of approximately 1100\xb0 C.