Your Atari Computer XL Edition.pdf

YOUR ATARI®

COMPUTER

A Guide to ATARI® 400/800™ Computers

By Lon Poole

with Martin. McNiff

and Steven Cook

OSBORNE/McGraw-Hill

Berkeley, California

The following are trademarks of Atari, Inc. Your ATA R/® Computer is not

sponsored or approved by or connected with Atari, Inc. All references to the

following trademarks (registered trademarks noted with ®) in the text of this book

are to the trademarks of Atari, Inc.

ATARI®A®

ATARI® 400™ Computer

ATARI® 4lOTM Program Recorder

ATARI® 800™ Computer

ATARI® 8lO™ Disk Drive

ATARI® 820™ 40-Column Printer

ATARI® 822™ Thermal Printer

ATARI® 825™ 80-Column Printer

ATARI® 830™ Acoustic Modem

ATARI® 850™ Interface Module

Star Raiders™

Music ComposerTM

Memory Module™

Published by Osborne! McGraw-Hill

2600 Tenth Street

Berkeley, California 94710

U.S.A.

For information on translations and book distributors outside the U.S.A., please

write OSBORNE! McGraw-Hill at the above address.

YOUR ATARI® COMPUTER

A GUIDE TO ATARI® 400j800™ COMPUTERS

Except as permitted under the Copyright Act of 1976 , no part of this publication may be reproduced or

distributed in any form or by any means, or sto red in a data base o r retrieval syste m , without the prior

written permission of the publisher, with the exception that the program listings may be entered, stored,

and executed in a computer system, but they may not be reproduced for publication.

67890 87654

ISBN 0-931988-65-9

Cover design by Jan Benes

Cover illustration by J. Benes and R. Cash

Text design by K.L.T. van Gendere n

Photos by Harvey Schwartz unless otherwise credited

CONTENTS

Introduction v

1 Presenting the ATARI Home Computers

2 How to Operate the ATARI Computers 13

3 Programming in BASIC 41

4 Advanced BASIC Programming 103

5 The Program Recorder 183

6 ATARI Printers 199

7 The ATARI 810 Disk Drive 221

8 Introductory Graphics 271

9 Advanced Graphics 291

10 Sound 325

11 Compendium of BASIC Statements and Functions 337

Appendixes

A Error Messages and Explanations 405

B STATUS Statement Codes 412

C Derived Trigonometric Functions 414

o Codes, Characters, and Keystrokes 416

EATARI BASIC Keywords and Abbreviations 425

f Memory Usage 426

G Useful PEEK and POKE Locations 434

H Conversion Tables 443

I The ATARI XL Series 450

J Bibliography 457

Index 459

iii

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