A graphics processor has elements of a graphics pipeline coupled by distributors. Thus, the push member is pushed to introduce each of the nails into the guide tube successively, and the nails are ejected outwardly from the guide tube successively, so that the nail pusher can push and eject the nails successively. According to alternative embodiments, the plasma may be generated with grids or coils disposed in the reaction chamber perpendicular to the flow of reaction products from the vacuum processing chamber. A source counter for the source is then set to one and a timestamp is created for the source. Just before the VOC breakthrough occurs at the first reactor, the effluent is switched to the second reactor while the regeneration gas is switched to the first reactor to start another operation cycle. A current preamble configuration, including a permutation of preamble location and preamble content corresponding to the secondary preambles, is determined, which connote channel-sharing information.