Written by the director of ARM’s worldwide academic program, this volume gives computer science professionals and students an edge, regardless of their preferred coding language. For those with some basic background in digital logic and high-level programming, the book examines code relevant to hardware and peripherals found on today's microcontrollers and looks at situations all programmers will eventually encounter. The book’s carefully chosen examples teach easily transferrable skills that will help readers optimize routines and significantly streamline coding, especially in the embedded space. This book is easily adaptable for classroom use. Instructors can access features that include a solutions manual, assembly language basics, problems, and actual code. The book also provides access to a fully functional evaluation version of the RealView Microcontroller Development Kit from Keil. While it is still an important skill, getting good instruction in assembly language is not easy. The availability of languages such as C and Java foster the belief that engineers and programmers need only address problems at the highest levels of a program's operation. Yet, even modern coding methods, when done well, require an understanding of basic assembly methods such as those gained by learning ARM. Certain features that are the product of today’s hardware, such as coprocessors or saturated math operations, can be accessed only through the hardware’s native instructions. For that matter, any programmer wishing to achieve results as exact as his or her intentions needs to possess a mastery of machine code basics as taught in the pages of this book. Of the 13 billion microprocessor-based chips shipped in the last year, nearly 3 billion were ARM-based, making operational knowledge of ARM an essential component of any programmer’s tool kit. That it can be applied with most any language makes it invaluable.

Table of Contents:
An Overview of Computing Systems History of RISC The Computing Device Number Systems Representations of Numbers and Characters Translating Bits to Commands The Tools The ARM7 TDMI Programmer’s Model Data Types Processor Modes Registers Program Status Registers The Vector Table First Programs Program 1: Shifting Data Program 2: Factorial Calculation Program 3: Swapping Register Contents Programming Guidelines Assembler Rules & Directives Structure of Assembly Language Modules Predefined Register Names Frequently Used Directives Macros Miscellaneous Assembler Features Loads, Stores and Addressing Memory Load and Stores—The Instructions Operand Addressing Endianness Constants and Literal Pools The ARM Rotation Scheme Loading Constants into Registers Loading Addresses into Registers Logic and Arithmetic Flags and Their Use Comparison Instructions Data Processing Instructions Fractional Notation Loops and Branches Branching Looping More on Flags Conditional Execution Straight-Line Coding Tables Lookup Tables Jump Tables Binary Searches Subroutines and Stacks The Stack Subroutines Passing Parameters to Subroutines The ARM APCS Exception Handling Interrupts Error Conditions Processor Exception Sequence The Vector Table Exception Handlers Exception Priorities Procedures for Handling Exceptions Memory-Mapped Peripherals The LPC2104 The LPC2132 THUMB THUMB Instructions Differences Between ARM and THUMB THUMB Implementation and Use How to Compile for THUMB Mixing C and Assembly Inline Assembler Embedded Assembler Calling Between C and Assembly Appendix A: The ARM v4T Instruction Set Appendix B: Running Keil Tools Creating a Project and Selecting a Device Creating Application Code Building the Project and Running Code Appendix C: ASCII character codes