Atari 400 Technical Reference Manual

/' TECHNICAL REFERENCE NOTES includes: Operating System User's Manual Operating System Source Listing and Hardware Manual TO All PERSONS RECEIVING THIS DOCUMENT Reproduction is forbidden without the specific written permission of ATARI , INC. Sunnyvale, CA 94086. No right to reproduce this document, nor the subject matter there ...

OPE RA TI NG SYSTEM USER'S MANUAL )I~@ ATARI A Warner Communications Company ~ ...

ALL RIGHTS RESERVED TO All PERSONS RECEIVING THIS DOCUMENT Reproduction is forbidden without the specific written permission of ATARI, INC. Sunnyvale, CA 94086. No right to reproduce this document, nor the subject matter thereof, is granted unless by written agreement with, or written permission from the Corporation. Every effort ...

Operating System USER'S MANUAL 17 1 INTRODUCTION 18 GENERAL DESCRIPTION OF THE ATARI COMPUTER SYSTEM 18 Conventions Used in This Manual 20 HEXADECIMAL NUMBERS 20 MEMORY ADDRESSES 20 KILOBYTES OF MEMORY 20 PASCAL AS AN ALGORITHM-SPECIFICATION LANGUAGE 20 MEMORY LAYOUTS 20 BACKUS-NAUR FORM (BNF) 21 OS-EQUATE FILENAMES 21 3 ...

22 Input/Output Subsystem 22 Interrupt Processing 22 Initialization 22 Power-Up 22 System Reset 23 Floating Point Arithmetic Package 24 3 CONFIGURATIONS 25 Program Environments 25 Blackboard Mode 25 Cartridge 26 Diskette-Boot 26 Cassette-Boot 26 RAM Expansion 27 Peripheral Devices 27 Game Controllers 27 Program Reco ...

Mapped 1/0 Resident OS and Floating Point Package ROM Central Data Base Description Memory Dynamics System Initialization Proce'ss Changing Screen Modes 5 1/0 SUBSYSTEM Central 1/0 Utility CIO Design Philosophy DEVICE INDEPENDENCE DATA ACCESS METHODS MULTIPLE DEVICEIFILE CONCURRENCY UNIFIED ERROR HANDLING DEVICE EXPANSION CIO CALLING MECHA ...

and Ready for Access 41 CLOSE -- Terminate Access to Device/File and Release IOCB 42 GET CHARACTERS -- Read n Characters (Byte-Aligned Access) 43 PUT CHARACTERS -- Write n Characters (Byte-Aligned Access) 43 GET RECORD -- Read Up To n Characters (Record-Aligned Access) 44 PUT RECORD -- Write Up To n C ...

( P: ) CIa Function Descriptions Theory of Operation Dis k F i 1 e Ma nag e r ( D: ) CIa Function Descriptions DevicelFilename Specification Filename Wildcarding Special CIa functions Theory of Operation FMS Diskette Utilization Non-CIa 110 FMS BOOT RECORD FORMAT BOOT PROCESS MEMORY MAP VOLUME TABLE OF CONTENTS FILE DIRECTORY FORMAT ...

116 System Reset Initialization (Warmstart) Procedure 119 8 FLOATING POINT ARITHMETIC PACKAGE 121 9 8 Functions/Calling Sequences 122 ASCII to Floating Point Conversion (AFP) 122 Floating Point to ASCII Conversion (FASC) 122 Integer to Floating Point Conversion (IFP) 123 Floating Point ...

HardwarelElectrical Characteristics Serial Port Electrical Specifications Bus Commands COMMAND FRAME COMMAND FRAME ACKNOWLEDGE DATA FRAME OPERATION COMPLETE Bus Timing Handler Environment Boatable Handler Cartridge Resident Handler Flowcharts 10 PROGRAM ENVIRONME ...