# Chapter 1: Introduction about x86 architecture and about our OS


# Chapter 1: Introduction about x86 architecture and about our OS

### What is x86 architecture?

> The term x86 denotes a family of backward compatible instruction set architectures based on the Intel 8086 CPU.

The x86 arhictacture is most common instruction set architecture since the introduction in 1981 of the IBM PC. A large amount of software, including operating systems (OSs) such as DOS, Windows, Linux, BSD, Solaris and Mac OS X, functions with x86-based hardware.

In this course we are not going to design an operating system for x86-64 architecture but for x86-32, thanks to backward compatibility, our OS will be compatible with our PCs (but take caution if you want to test it on your real machine).




Add introduction about x86 architecture
Add introduction about x86 architecture