As the result of configuring a kernel (Section 12), a file named xkernel should exist in your build directory.
While in this directory, you should create a sub-directory for each x-kernel instance to be tested. For example, if you intend to start up client and server instances of a user_level x-kernel , create two subdirectories, e.g., client and server. In each subdirectory, create a file named rom, an example of which can be copied from /usr/xkernel/user_level/build/Template. The ROM files should contain configuration information as described in Section 12.4, and in the man pages for protocols and device drivers in Appendix A.
Each simulated host runs as a separate Unix process. To run multiple x-kernel s using a windowing user interface, you should start each process in a separate window. For each simulated host, open a shell command window, cd to the sub-directory that contains that host's
rom file (e.g., cd client) and type ../xkernel. Use DELETE or CTRL-C to stop an x-kernel .