Complex sentence: Most host systems are ordinary commercial computers unrelated to the CPU used for development-for example, a Linux PC might be used to develop software for a system using a Freescale 68HC11 chip, which itself could not run Linux.
Split into simpler sentences: Most host systems are ordinary commercial computers unrelated to the CPU used for development. For example, a Linux PC might be used to develop software for a system using a Freescale 68HC11 chip, a processor that cannot run Linux.