A closed-loop reverse-link power control algorithm for a frequency hopping orthogonal frequency division multiple access system is described. The thermosetting composite has a functional thermoplastic surface layer attached by a process of selection of a compatible thermoplastic, heating the combined materials to allow migration of uncured thermosetting polymer into the thermoplastic polymer, then cooling the combined materials to provide a strongly attached thermoplastic surface. The access requests specify accesses to a slave device, with the first master logic unit being operable to access the slave device via a first bus, and the second master logic unit being operable to access the slave device via a second bus.