A message retrieval subsystem comprises a voice extensible mark-up language browser, a message server, and a message library. A data switch interconnect is coupled to each of the processor cores and configured to pass information among the processor cores. A packet is created that includes at least a portion of the path information and a set of loadstore operations to be executed by the destination switch module. The drive for moving the trapdoor may be switched off when the trapdoor comes into contact with an upper or lower stop in a simpler and more reliable manner. After the pressure between the two columns 5 and 13 has been stabilized sufficiently, the rotor is further rotated for 30 degrees, and the trap column 5 and the analytical column 13 are connected in series, so the sample analysis can be performed.