Rom Copy Technique Ii
but, all in all, is the simplest and most effective ROM copy technique being used by software pirates today. To explain this technique, I will introduce a new term -EPROM chip. An EPROM chip is an Erasable, Programmable, Read Only Memory also PROM, Programmable Read Only Memory chips can be used but cannot later be erased and revised . EPROMs are just like ROMs except that the instructions can be altered using a device called an EPROM burner. This, figuratively speaking, burns instructions into...
Rom And Eprom Cartridges
ROMs are Read Only Memories. As you know, the ATARI operating system is on a 10K ROM board, and cartridge games are on ROM chips varying from 4K to 16K. There are two cartridge slots on the ATARI 800 and one on the ATARI 400 and 1200XL. The right hand cartridge slot on the 800 uses memory locations 8000 through 9FFF HEX . The left cartridge slot uses memory locations A000 through BFFF for 4K and 8K cartridges and 8000 through BFFF for 16K cartridges. When a cartridge is present, it will disable...
DISk UTILITTES
C COPYWRITE 1933 FROM ALPHA SYSTEMS ATARI is a registered trademark o-f Atari, Inc. Atari Software Protections Techinques Disk Utilities is a utility package designed -for use by software writers to help protect your software from, illegal copying. The theory is described in the book Atari Software Protection Techniques that is included in this package, but this disk utility should help even the beginner use some of the methods described. A menu of options will automatically appear on your...
Programs Written In Basic
Disabling the Break Key Disabling the System Reset Key Preventing an Error Break Preventing a LOAD and SAVE Combination Protecting Against LIST Special Cases Chapter 3 CASSETTE PROTECTION 12 Chapter 4 GENERAL DISK PROTECTION 15 An AUTORUN SYS File Preventing DOS Copies Hiding Disk Directories and VTOCs Chapter 5 BAD SECTORING 28 Chapter 6 s HIDING PROTECTION CODE 38 - Chapter 7 MIS ASSIGNED SECTORS 46 How Misassigned Sectors Protect Software How Pirates Copy Misassigned Sectors Protecting...
An Alpha Systems Product
Atari, Atari 400 Computer, Atari 410 Program Recorder, Atari 800 Computer, Atari 810 Disk Drive are all trademarks of Atari, Inc. Apple is a trademark of Apple, Inc. IBM-PC is a trademark of IBM, Inc. c Copyright 1983 by Alpha Systems, Stow, Ohio, 44224. All rights reserved. No part of this book may be reproduced by any means without permission in writing from Alpha Systems. Printed in the United States of America 10 9876543 The need for software authors to protect their property from theft is...