Motorola M68000 Uživatelská příručka stáhnout pdf (Strana 9)

PREFACE

This book deals specifically with the Motorola 68000 family of

microprocessors. It is primarily about assembly language programming.

Chances are that a reader interested in assembly language programming is

familiar with computers and their programming; In the unlikely event that

you are not, and have picked up this book expecting to learn all about

computers, I want to urge you to start elsewhere. In order to gain the

maximum knowledge from this book, you should already be familiar with

computers in general and have written some programs in a high-level

language such as BASIC or Pascal. It is not necessary to know another

assembly language or be an expert in computer programming. I start at a

fairly low level but get up to speed pretty quickly. Those who already know

another assembly language will be able to progress rapidly through the

material. In the writing of this book I attempted to strike a balance between

a beginner-level tutorial and the brief format of a reference manual. This

level of presentation should appeal to the majority of readers.

There are 15 chapters plus a number of useful appendices. Chapter 1

covers number systems. This is mostly general information, but there is a

little bit of 68000-specific information here. You should look through it even

if you know number systems inside out. Chapter 2 describes microcomputer

architectures in general, and the 68000 specifically.

Chapters 3 through 5 provide enough information to start writing com

plete programs. Chapters 6 through 8 cover more advanced topics such

as addressing modes and subroutines. Once through chapter 8 you will have

a substantial background in 68000 assembly language. At this point Chapter

9 presents a major program, a linked list manager. This helps to cement the

techniques from Chapters 1 through 8.

Chapters 10 through 12 cover advanced topics such as exception

handling, shift and rotate instructions, and advanced arithmetic. By the end

of Chapter 12 you will know all the instructions of the 68000. Chapters 13,

14, and 15 cover the newest members of the 68000 family—the 68010,68020,

and 68030. Chapter 15 should be of special interest, since it provides an

introduction to the latest and most powerful 68000 processor. You will be

hearing more about the 68030 as it is introduced into systems. It is destined

to have a major impact on the computer systems of the next decade.

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Motorola M68000 Uživatelská příručka Strana 9