Port priorities are defined on a 32-bit word, 16-bit half-word, and 8-bit byte basis to control the write enable signals to a compute register file. End portions of the arc tub are wound around the spiral axis. In some embodiments, the at least two chips are respectively mounted on opposite major surfaces of the smart card body. The character dummies have a fixed shape and dimension, and arranged in a character pattern layer selected from the plurality of pattern layers with a fixed pitch. If the internal temperature T exceeds threshold value Tb before thermal shutdown processing operates, the internal temperature detection circuit outputs a HW signal. The mirror casing is adapted to pivot about the support between an inboard position and an extended outboard position thereby extending the field of view of the mirror assembly.