8051 인터넷 문서 - THE FINAL WORD ON THE 8051

THE FINAL WORD ON THE 8051

8051 관련 자료를 뒤지다보면 거의 반드시 발견하게 되는 자료들이 있다. 여기 "THE FINAL WORD ON THE 8051"이 그 중의 하나다. 사실 정확한 출처는 잘 모른다. 문서 내부에도 이 문서가 어디서 만들어졌는지, 어디에 연락을 해야 만든 사람을 알수 있는지 나오지도 않는다. 내용은 상당히 오래된 감이 있지만 8051 이 21세기에 와서 크게 바뀐것은 없다. 바뀐것이 있다면 다양한 별종(?)들이 출현하기 시작했다는 정도...

그 별종들은 프로토타입(인텔 8051)을 알면 대부분 거기에 약간의 추가기능과 성능향상을 넣은 정도다. 물론 그 성능향상이라는 것이 속도가 두세배 정도 빨리지는 정도는 아니다. 하지만 사용방법은 크게 변함이 없다는 것이다. 그만큼 이 문서의 효용성은 높다. 8051을 다룬다면 한번쯤 살펴보는 것도 좋을 것이다.

책의 Introduction 부분만 이곳에 올려본다. 나머지는  아래 파일을 다운받아서 보면 된다.

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This is a book about the Intel 8051 microcontroller and its large family of descendants. It is intended to give you, the reader, some new techniques for optimizing your 8051 projects and the development process you use for those projects. It is not the purpose of this book to provide various recipes for different types of embedded projects.

Wherever possible, I have included code examples to make the discussion clearer. There are points in the book where projects are discussed as a means of illustrating the point of the given chapter. Much of this code is available on the companion disk, to use it you will need to be familiar with C and 8051 assembler since this book is not intended to be a tutorial in C or 8051 assembler. There are many fine books you can buy to learn about ANSI C. As for 8051 assembler, the best source is the Intel data book which is free from your 8051 vendor or the manual that comes with your particular assembler.

The code on the companion diskette contains the code I wrote and compiled for the book you hold in your hands. It is fully functional and has been tested. This is not to say that that the code on the diskette is ready to go into your system and be delivered as part of your projects. Some of it will require change before it can be integrated into your system.

This book will help you learn how to make the best out of the tools you have. If you only have an 8051 assembler, you can still learn from this book and use the examples, but you will have to decide for yourself how to implement the C language examples in assembler. This is not a difficult task for anyone who understands the basics of C and the 8051 assembler set.

If you have a C compiler for the 8051, then I congratulate you. You have made an excellent decision in your use of C. You will find that your project development time using C is lower and that your maintenance time using C is also lower. If you have the Keil C51 package, then you have made an excellent decision in 8051 development tools. I have found that the Keil package for the 8051 provides the best support. The code in this book directly supports the Keil C extensions. If you have one of the
other development packages such as Archimedes or Avocet, you will find that this book is still of great service to you. The main thing to be aware of is that you may have to change some of the Keil specific directives to the appropriate ones for your development tools.

In many places in this book are diagrams of the hardware on which the example code runs. These are not intended to be full schematics, but are merely block diagrams that have enough information to allow you to understand how the software must interface to the hardware.

You should look upon this book as a learning tool rather than a source of various system designs. This is not an 8051 cookbook, but rather an exploration of the capabilities of the 8051 given proper hardware and software design. I prefer to think that you will use this book as a source of ideas from which your designs springboard and grow in a marvelous world of sunshine and roses! Seriously, though, I think you will gain useful knowledge from this book that will help you greatly improve your designs and make you look like your company’s 8051 guru.

다음번에는 이 문서의 내용 중 일부를 설명하면서 8051의 특징들을 살펴보기로 한다.