Demystifying Computers

Using Free and Open Source Software (FOSS)

by Jeff Elkner and Chris Jones

Last updated: 27 July 2026

• Copyright Notice

• Contributor List

• Preface

• Chapter 0 Why Demystifying Computing?

• Chapter 1 The Intel 8080 Instruction Set

• Chapter 2 Assembly Language

• Chapter 3 The CP/M Operating System

• Chapter 4 BDS C

• Appendix A Altair 8800 Simulator

• Appendix B Intel 8080 Instruction Set

• Appendix C Setups and Configuration

• Appendix D CP/M Cheat Sheet

• Appendix E WordMaster Cheat Sheet

• Creative Commons Attribution-ShareAlike 4.0 International Licence

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