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

Continuous Unix commit history from 1970 until today

Virtual Apollo Guidance Computer (AGC) software

#FreeGEOS source codes. The offical home of the PC/GEOS operating system technology. For personal computing fans. For all developers and assembly lovers. For YOU!

A very minimal, resource efficient exo-kernel

The OpenPiton Platform

An Operating System for Z80 computers, written in assembly

Pure64 is a kernel/software loader for x86-64 systems.

The source code of the CIH virus

PC-MOS/386 v5.01 and up, including cdrom driver sources.

Micro Kernel / Bootloader for Ben Eater's 6502 Computer

Original source code for Impulse Tracker, a music tracker for DOS

CP/M for the 6502

Famicom Disk System port of LUnix Next Generation

Fork/clone of https://bitbucket.org/jthlim/impulsetracker // Full source code for Impulse Tracker, including sound drivers, network drivers, and some supporting documentation // IMPORTANT: This is …

VxD to allow Windows 3.1 Enhanced Mode to be used with Intel AHCI (SATA) controllers

Re-make of the Soviet Ham Radio computer published in Radio Magazine in 1986

SuperVGA BGI Drivers for Turbo C/Turbo Pascal/Borland C++

IBM PC/Clone 8086+ floppy-loading of option roms.

A BIOS bootloader for bare-metal x86 programs, written in 8086 assembly

Repo for the 486 breadboard computer project

L4Ka::Hazelnut micro-kernel

A ISA card for PC/XT/AT that has SD storage and SPI/I2C interfaces using a ATMEGA328P

Código C para microcontroladores 8051 # Compiler: SDCC & IDE: CodeBlocks

A simple CLI for BareMetal

Configurable implementation of the Twofish block cipher for AVR 8-bit microcontrollers (ATtiny, ATmega)

Tiny bootloader for Atmega8 with xmodem and encryption

BareMetal Node

S-OS Compatible OS(Z80) for SHARP X1/turbo/Z and MSX-DOS

R/C DIY transmitter