EMBEDDED SYSTEM CHAPTER 1 1.28 Microprocessor instructions can be classified into three major groups. What are these groups? Please describe what characterizes Instructions in each of the groups. 1.30 What information does the addressing mode of an instruction Convey? 1.32 How is the addressing mode information incorporated into an instruction? 1.34 What are the four major categories of execution flow through an embedded program? Briefly describe what each means. 1.36 What is the difference between an entry condition loop and an exit condition loop? 1.38 What is a stack? 1.40 What is the purpose of the variable called the stack pointer? 1.42 Underlying the microprocessor's instruction set is the implementation hardware. What are the core components of that hardware