OSle

Instructions

Builtins

• ls list all files and commands
• cl clear the screen

Programs

• ed <text-file> open a text editor
• help show this help
• more <text-file> preview the content of a file
• mv <source> <destination> change file's path from source to destination
• rm <text-file> delete a file
• snake launch a snake game

What is this?

OSle is a real-mode OS that fits in a boot sector.

It's written in x86 assembly and, despite its tiny size (only 510 bytes), it packs essential features like:

• shell run commands and builtins
• file system read, write, and find files on the disk
• process management cooperatively spawn processes
• userland software comes with pre-built software and an SDK to write your own

Your first program

OSle includes a tiny Software Development Kit that includes definitions and a toolchain to create your own OSle programs.

Follow the step-by-step tutorial to get started and, whenever you are ready to run your code, just compile it and bundle it like this:

# compile your source code into a binary
$ sdk/build my_program.s

# bundle it with OSle
$ sdk/pack my_program.bin

Feedback and contributions

For feedback and contrubtions guidelines, please refer to the GitHub Repository.