sysctlr - Onyx and Challenge L/XL system controller communication device
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The system controller device is used by _s_y_s_c_t_l_r_d to communicate with the
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sequences power, monitors sensors, and drives the LCD front panel.
Through this driver, _s_y_s_c_t_l_r_d(_1_M) reads sensor information, displays
front panel messages, retrieves log messages, drives the CPU performance