Device Tree-based Platform Device Driver Development for Tiano UEFI

xMach (Mach4+Lites) cloned from Sourceforge CVS

The RV BRS test suite checks for compliance against the RVI Boot and Runtime Service specification.

A tiny Open POWER ISA softcore written in VHDL 2008

Arm SystemReady : BBR Compliance Suite

A Tiny Linux-Compatible Kernel

[No longer active] A fork of OpenSBI, with software-emulated hypervisor extension support

NES emulator in <5000 bytes of C

Contents from SunOS 4.1.3 SUNSRC CD-ROM

SGLIB - A Simple Generic Library for C (originally by Marian Vittek and not maintained by Stefan Tauner at all!)

Forth for Swissmicros DM42 calculator

board managment controller for the solid-run honeycomb arm server

The Interim Operating System

RISC-V Profiles and Platform Specification

An OpenGL RTS game engine written in C

Syntacore first stage bootloader

Simple, fast, safe, compiled language for developing maintainable software. Compiles itself in <1s with zero library dependencies. Supports automatic C => V translation. https://vlang.io

Preloader for Linux on M1

"Das U-Boot" Source Tree

WebAssembly interpreter in C

42bsd scripts to build and run inside simh

Template to compile Z80/Z180/EZ80 CPM programs with sdcc

An open source sort-of CP/M 2.2 distribution.

Few people use Forth. But this might be useful if you want to!

ARM Cortex M0 emulator for DOS

DPDK

Light scaffolding for building kexec as a loadable kernel module

Tegra 3 and Tegra 4 TrustZone UEFI variable services handler exploit and Secure Boot unlock tool

Documentation for the RISC-V Supervisor Binary Interface