An integrated circuit device may include a first portion having a plurality of volatile memory cells; and a second portion coupled by a data transfer path to the first portion, the second portion including a plurality of nonvolatile memory cells, each nonvolatile memory cell including at least one resistive element programmable more than once between different resistance values. A subset of contacts accessible by a telecommunication device are associated with one or more communication categories. A hydraulic servo mechanism is connected to a trunnion to create an offset of the power roller from a neutral position for a tilting motion of the power roller. The first and second exhaust conduits are preferably formed as integral structures within the engine head portion and engine block portion.