Mapping the Atari http://www.abbuc.de http://www.atari-portal.de Converted and layouted 2006 by Andreas Bertelmann for ABBUC MAPPING THE ATARI Revised edition by Ian Chadwick Introduction by Bill Wilkinson COMPUTE! Publications,Inc. Part of ABC Consumer Magazines, Inc. One of the ABC Publishing Companies Greensboro, North Carolina Revised edition copyright 1985, Ian Chadwick. All rights reserved. Previous edition copyright 1983 by Irata Press, Ltd. Michael Reichmann, Publisher. Reproduction or translation of any part of this work beyond that permitted by Sections 107 and 108 of the United States Copyright Act without the permission ot the copyright owner is unlawful. Printed in the United States ot America 10 9 8 7 6 5 4 ISBN 0-87455-004-1 We do not accept any responsibility for any damage done to the reader's programs through use or misuse of the information presented here. Readers are advised to read the warning in the introduction with regard to saving critical programs and removing important disks or cassettes before attempting to use this manual. The author and publisher have made every effort in the preparation at this book to insure the accuracy of the programs and information. However, the information and programs in this book are sold without warranty, either express or implied. Neither the author nor COMPUTE! Publications. Inc will be liable for any damages caused or alleged to be caused directly. indirectly, incidentally, or consequentially by the programs or informotion in this book COMPUTE! Publications, Inc , Post Office Box 5406, Greensboro, NC 27403 (919) 275-9809, is part of ABC Consumer Magazines, Inc., one of the ABC Publishing Companies, and is not associated with any manufacturer of personal computers. Atari 400, 800, 1200XL, 600XL, 800XL, 65XE, and 13OXE are trademarks of Atari, Inc. I Mapping the Atari Contents Part I Preface 5 Part II Foreword 8 Part III Introduction 20 Part IV Memory map 29 1 Page 0 ................................................................................................................................... 29 0 - 127 ......................................................................................................................................................... 29 128 - 255 ......................................................................................................................................................... 46 2 Page 1 ................................................................................................................................... 54 256 - 511 ......................................................................................................................................................... 54 3 Page 2 ................................................................................................................................... 54 512 - 535 ......................................................................................................................................................... 54 536 - 558 ......................................................................................................................................................... 57 559 - 623 ......................................................................................................................................................... 60 624 - 647 ......................................................................................................................................................... 67 648 - 655 ......................................................................................................................................................... 69 656 - 703 ......................................................................................................................................................... 69 704 - 712 ......................................................................................................................................................... 73 713 - 735 ......................................................................................................................................................... 76 736 - 767 ......................................................................................................................................................... 76 4 Page 3 ................................................................................................................................... 85 768 - 779 ......................................................................................................................................................... 85 780 - 793 ......................................................................................................................................................... 87 794 - 831 ......................................................................................................................................................... 88 832 - 959 ......................................................................................................................................................... 89 960 - 999 ......................................................................................................................................................... 94 1000 - 1020... ...................................................................................................................................................... 94 5 Page 4 -. .5.. ............................................................................................................................... 94 1021 - 1151... ...................................................................................................................................................... 94 1152 - 1535... ...................................................................................................................................................... 95 6 Page 6 ................................................................................................................................... 95 1536 - 1791... ...................................................................................................................................................... 95 7 Page 7 ................................................................................................................................... 96 1792 - 2047... ...................................................................................................................................................... 96 8 Page 8 -. .ff.. ............................................................................................................................... 99 2048 - 8191... ...................................................................................................................................................... 99 8192 - 32767....... .................................................................................................................................................. 104 32768 - 40959......... ................................................................................................................................................ 106 40960 - 49151......... ................................................................................................................................................ 106 49152 - 53247......... ................................................................................................................................................ 109 53248 - 55295......... .I/O..... .Chips.......... ............................................................................................................................... 109 53248 - .53279.......... .(GTIA......... .or... .CTIA)........................................................................................................................ 110 53280 - .53503................................................................................................................................................. 119 53504 - .53759................................................................................................................................................. 119 53760 - .53775.......... .(POKEY)...................................................................................................................................... 119 53776 - .54015................................................................................................................................................. 126 Converted and layouted 2006 by Andreas Bertelmann for ABBUC Contents II 54016 - .54019.......... .(PIA:........ .6520)............................................................................................................................. 126 54020 - .54271................................................................................................................................................. 128 54272 - .54287.......... .(ANTIC)...................................................................................................................................... 128 54288 - .54303................................................................................................................................................. 134 54784 - .55295................................................................................................................................................. 134 55296 - 65535........