Online / 5 & 6 February 2022


Made by Woz: how Apple-1 operating system works?

Brilliant Steve Wozniak’s code every software engineer should know

Operating system of Apple-1 written by Steve Wozniak is an engineering piece of art – 256 bytes only! We will explain how it works using the original 6502 assembler source code along with our own rewritten in Python version so every software engineer could understand how It works. It should be useful for engineers who want to know basics of operating systems.

We will cover: – what are the functions of the simplest operating system – what functions of operating system are hardware-specific – how it communicates with the user – how it runs the programs


Photo of Sergey Panarin Sergey Panarin