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Atari 130XE machine language for the absolute beginner
- Author / Creator
- Available as
- Online
- Summary
-
First published in 1985, this user-friendly guide to coding machine language on the Atari 130XE helped many owners of the much-loved home computer achieve programming feats well beyond the limits o...
First published in 1985, this user-friendly guide to coding machine language on the Atari 130XE helped many owners of the much-loved home computer achieve programming feats well beyond the limits of BASIC. Based on the MOS Technology 6502 CPU running at 1.79 MHz, the 130XE was one of Atari's famed 8-bit range - in fact the first home computer series to be designed with custom co-processor chips.* * *As the original publisher Melbourne House wrote:Go beyond the limitations of BASIC and write faster, more powerful space-saving programs using this guide compiled exclusively for Atari 130XE users.Atari 130XE Machine Language for the Absolute Beginner offers complete instruction in 6502 machine language. Each chapter includes specific examples of machine language applications which can be demonstrated and used on your own Atari 130XE.Even without any previous experience in computer languages the easy-to-understand 'no jargon' format of this book will make the art of machine la.
Details
- Creator
- Kevin Bergin
- Format
- Books
- Language
- English
- Publication
-
- London, England : Andrews UK Ltd., [2020]
- ©2020
- Series
- Physical Details
-
- 1 online resource (155 pages)
- ISBNs
- 9781789825404, 9781789824322, 9781789824322
- OCLC
- on1312159950
- Cover -- Contents -- Front Matter -- Title page -- Publisher info -- Foreword -- Atari 130XE Machine Language for the Absolute Beginner -- Chapter 1- Introduction to Machine Language -- Using a Machine Language Program -- Memory Addressing -- Using Memory Directly from BASIC -- Machine Language as a Subroutine -- Summary -- Chapter 2- Basics of Machine Language Programming -- Using Memory from Machine Language -- The Registers -- The Accumulator -- Addressing Modes -- Simple Program Input -- Assembly Language -- Screen Memory -- Printing a Message -- Summary -- Chapter 3- Introduction to Hexadecimal -- Uses of Hexadecimal -- Binary -- Why Hexadecimal -- Hex and Binary Mathematically -- Absolute Addressing -- Converting Hexadecimal to Decimal -- Summary -- Chapter 4- Introduction to ALPA + Disassembler -- To Get ALPA Running -- Using ALPA -- ALPA Commands -- Memory Usage in ALPA -- Summary -- Chapter 5- Microprocesor Equipment -- Storing Numbers -- The Carry Flag -- Adding Numbers -- Two Byte Addition -- Subtracting Numbers -- An Exercise -- Summary -- Chapter 6- Program Control -- Player-Missile Graphics -- Moving Player-Missile Graphics -- Looping Using JMP -- ALPA Label Name Addressing -- Infinite Loops -- Comparing Numbers -- Branch Instructions -- Zero Flag -- Program Summary -- Relative Addressing -- Summary -- Chapter 7- Counting, Looping and Pointing -- Counting to Control a Loop -- Counting Using the Accumulator -- Counting Using Memory -- The X and Y Registers -- Using the X Register as a Counter -- Moving Blocks of Memory -- Implied Addressing -- Relative Addressing -- Absolute Addressing -- Indexed Addressing -- Using the X Register as an Index -- Non-Symmetry of Commands -- Searching Through Memory -- Using More than One Index -- Zero Page Indexed Addressing -- Summary -- Chapter 8- Using Information Stored in Tables
- Displaying Characters as Graphics -- Graphics Memory -- Copying the Character Sets from ROM -- Indirect Indexed Addressing -- Register Transfer Instructions -- Indirect Addressing -- Summary -- Chapter 9- Processor Status Codes -- BCD Representation -- Summary -- Chapter 10- Logical Operators and Bit Manipulators -- Changing Bits Within Memory -- The Logical AND -- The Logical OR -- The Logical Exclusive OR -- The Bit Instruction -- Rotating Bits Within a Byte -- Rotation With Carry -- Rotating to the Right -- Clever Multiplication -- Summary -- Chapter 11- Details of Program Counter -- The Program Counter -- Storing into the Program Counter -- The Program Counter and Subroutines -- The Stack Control Structure -- Subroutines and the Stack -- The Stack and Interrupts -- Summary -- Chapter 12- Dealing with the Operating System -- The Kernal -- CLI (Clear Interrupt Flag) -- RTI (Return from Interrupt) -- Summary -- Back Matter -- Appendices -- Appendix 1- 6502 Instruction Codes -- Appendix 2- Hexadecimal to Decimal Conversion Table -- Appendix 3- Relative Brach and Two's Complement Numbering Tables -- Appendix 4- Atari 130XE Memory Map -- Appendix 5- The Screen Chip -- Appendix 6- The Sound Chip -- Appendix 7- Memory Usage Directory -- Appendix 8- Table of Screen Codes -- Appendix 9- Current Key Pressed -- Appendix 10- ALPA + Disassembler -- Also Available