This important revision introduces both students and practicing computer professionals to the characteristics of the Motorola 68000 family of processors. It has been widely applauded in previous editions as a text that is practical, easy to read, and designed to educate readers on the concepts as well as applied theory. In addition to its use as a learning aid, the text serves as a valuable reference in which topics are organized according to function and importance for the design of programs, interfaces or systems. This Second Edition has been updated to cover the most recent, relevant advances and developments affecting the MC68000 family of microprocessors.

The Motorola MC68000 family of microprocessors is undoubtedly a revolu tionary set of devices. The MC68000 is the first advanced 16-bit microprocessor with a 32-bit internal architecture and the first with 16-megabyte, nonsegment ed, direct memory addressing. The processor's six basic addressing modes are equivalent to 14, when one considers all of the variations among these modes. Combined with the device's data and instruction types, the modes provide more than 1000 useful instructions. The book you are about to study has been developed as an aid to the hard ware designer and as a supplement to the Motorola seminars on the 68000 microprocessor. The text includes a detailed description of the MC68000 and two complete systems that show how this processor can be interfaced to the outside world. The book follows a "top-down" approach. A brief history of microprocessors is provided first. Chapter 2 details the MC68000 by describing its registers, control lines, and capabilities. Chapter 3 introduces a small MC68000-based system. Although this system is characterized in the book as hypothetical, it is indeed the Educational Computer Board, used in the various Motorola seminars. The addressing modes and instructions are explained in Chapter 4, which includes helpful hints on how instructions can be used. Chapter 5 provides an in-depth description of additional instructions and numerous examples. Chapter 6 discusses exception handling and interrupts.

In the past several years, microprocessors have emerged as a major force in the computer industry, and the Motorola MC68000 family is regarded as an industry standard. The focus of this book is the Motorola MC68000 microprocessor family. Many of the design practices and fundamental concepts can apply to other modern microprocessors as well. This guide covers both the software and hardware of the M68000 family, and is designed as a text for a one-semester, junior-level microprocessor course that covers both programming and system design using the MC68000 microprocessor.

Clements has a gift for conveying highly complex, technical information in an exceptionally clear and readable manner. Clements writing style is very student oriented, and stresses the basics of 68000 ASL while also covering the latest information on ASL later generation chips.

The purpose of this book is to provide a complete and in-depth coverage of both hardware and software aspects of designing withe the popular 68000 family of processors. This book introduces the 68000 architecture, and gives an overview and comprehensive comparison of the 68000 family of processors; discusses the assembly language programming; and discusses the hardware design using a 68000 family processor. To fully employ the 68000 family of processors, this book includes information about the family with numerous illustrations bout the architecture, concepts, and th operation of instructions.

Covering routines for the most popular machines - ATT computer, the Atari 68000, the Commodore Amiga and the Macintosh - this book takes readers through all aspects of assembly language programming in a step-by-step fashion. It provides a complete, graduated approach to the entire line of 68000's, giving examples and exercises for each step so that readers can acquire all of the necessary skills. Topics include the 68000 programmer's model, explanations of number systems, subroutines and advanced assembler concepts, such as external references, linking, debugging and macros.