Original Apollo 11 Guidance Computer (AGC) source code for the command and lunar modules.

The original sources of MS-DOS 1.25, 2.0, and 4.0 for reference purposes

Hello world in every computer language. Thanks to everyone who contributes to this, make sure to see contributing.md for contribution instructions!

File formats dissections and more...

Continuous Unix commit history from 1970 until today

A running-jumping-swordfighting game I made on the Apple II from 1985-89

Dozens of minimal operating systems to learn x86 system programming. Tested on Ubuntu 17.10 host in QEMU 2.10 and real hardware. Userland cheat at: https://github.com/cirosantilli/linux-kernel-modu…

Learning assembly for Linux x86_64

A FPGA friendly 32 bit RISC-V CPU implementation

Web server for Linux written in amd64 assembly.

BareMetal is a 64-bit OS for x86-64 based computers. The OS is written entirely in Assembly while applications can be written in Assembly, C/C++, and Rust.

OS for z80 calculators

Source code and data of Second Reality by Future Crew in 1993

Incompatible Timesharing System

Floppy Bird (OS)

MOVED TO: https://cirosantilli.com/linux-kernel-module-cheat/userland-assembly with code at https://github.com/cirosantilli/linux-kernel-module-cheat/tree/master/userland/arch/x86_64 SEE README. x8…

Architectural privilege escalation on x86

Tetris that fits into the boot sector.

An iOS app in assembly

©️ Concurrent Programming Library (Coroutine) for C11

Exercises for Assembly language course

Kernel for z80 calculators

Restoration of 1st Edition UNIX kernel sources from pdf document.

Proto Language AsSeMbler for All (formerly Apple)

A Slack client for the Commodore 64

Official Defcad Megapack Repo

A collection of disassembled and commented source of parts of MS-DOS 1.0

Tetris for x86 in NASM

A box for misfit toys