68HC12/68HCS12 Textbooks and Simulators: "The textbooks are hyperlinked for cross references and to the Freescale
documentation, and will also launch the simulator for example programs
in the text (if Internet Explorer is used). In addition the textbooks are
fully indexed, and in the 68HCS12 case a PDF file is provided for printing
part or all of the text for reading when a computer is not available."