Search the Web for information on trainers from other manufacturers. Many small changes were made to the first seven chapters. Some interrupt material was moved from Chapter 7 to Chapter 6, and then expanded to discuss both reentrancy and concurrency. The new Chapter 8 discusses the fundamentals of common real-time operating systems in simple language. The new Chapter 9 discusses the design and implementation of a real-time operating system for the 68HC11 and the application of the OS in the design of a simple weather station.
All source code is provided and discussed as the design project progresses.
The chapter begins by discussing the specifications of the weather station, the requirements of the operating system, and the necessary hardware for the weather station. A modestly equipped laboratory will have the necessary hardware to implement this project. The source file for the weather station is available at this Web site to make it easy for students to get started on this quite complex project, and then modify and enhance the system. In order to contain the cost of textbooks, Prentice Hall limits the number of pages that an author can use. To add the new material in Chapters 8 and 9 of the second edition, several sections from the first edition were omitted.