A linear motor includes a plurality of electromagnetic coils continuously arranged and a magnet assembly disposed such that it may travel due to the interaction between itself and the magnetic fluxes from the coils. The drive capability of the P-type MOS transistor is higher than the overall drive capability of the two or more N-type MOS transistors connected together in series. The steering mechanism may also have an operator input device having a deadzone. The flow rate can be used with velocity data acquired during the regurgitation event to produce a dynamic estimate of the size of the regurgitant valve orifice. A method of mounting an optical wavelength division multiplexerdemultiplexer module within a telecommunications chassis is also disclosed. The ROP exploits may include code snippets that each include an executable instruction and a return instruction from valid code sequences.