In accordance with the teachings of the present disclosure, methods and apparatus are provided for a semiconductor device having thin anti-reflective layer operable to absorb radiation that may otherwise reflect off surfaces disposed inwardly from the anti-reflective layer. The cover is attached to the housing such that it can pivot and can be detached. The method further involves determining whether a criterion is fulfilled based on the determined scheduling priority andor load level, where the criterion is associated with an anticipated waiting time until being scheduled.