A method, apparatus, and computer instructions for managing a set of devices in the data processing system. The plunger has a mounting hole extending through the seal end thereof to receive a mandrel. The control unit corrects the position-attitude data on the basis of inherent errors in the robot to provide corrected position-attitude data. During a transition to a zero voltage power management state for the processor, the operational voltage applied to the processor by the voltage regulator may be reduced to approximately zero and the state variables associated with the processor may be saved to the dedicated cache memory.