A method and apparatus to model routing in a network are described wherein a data test route table is created from a route table, a stream of packets to test the DTRT is generated, and the DTRT is tested using the stream of packets. Desired regions of the active regions and the isolation regions are removed, thereby forming recess channel trenches to a desired depth. Additionally, the first semiconductor chip has a first data transmission interface formed to generate an encryption data stream from an input data stream using the encryption initial value according to the encryption rule. In the minimum flow mode, the shutdown solenoid and minimum flow solenoid establish a flow path for the fuel to the engine manifold at the minimal flow rate.