A circuit for testing a power down reset function of an electronic device includes a reference power source, a first variable resistor with one end connected to the reference power source, a second variable resistor, and a jumper. In one embodiment, the system provides a browsing environment for children that routes all internet requests through a central server. The agitation may follow a pattern depending on the location of the agitators with some about the periphery less employed than those adjacent the auger. A special interlocking mechanism is additionally used to coordinate accesses among multiple processors or threads to the same wide register address locations. The multiple code sets based on the DFM tags are created.