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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!
Continuous Unix commit history from 1970 until today
Web server for Linux written in amd64 assembly.
Raspberry Pi ARM based bare metal examples
A FPGA friendly 32 bit RISC-V CPU implementation
The CORE-V CVA6 is an Application class 6-stage RISC-V CPU capable of booting Linux
bootOS is a monolithic operating system in 512 bytes of x86 machine code.
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.
A tiny bootable Minecraft clone written partly in x86 assembly
Pure64 is a kernel/software loader for x86-64 systems.
A simple, clean code, multi-tasking kernel written in pure Assembly language for 64-bit processors from the AMD64 family.
An open source sort-of CP/M 2.2 distribution.
bootBASIC is a BASIC language in 512 bytes of x86 machine code.
A project to create unencumbered open-source ROMs for use on selected retro computers
a simple x86 kernel, extended with Rust
Tiny assembler for 8086/8088, able to run over DOS for 8086/8088 machines.
A ray-casting game in 512 bytes of x86 machine code
A commodore 64 emulator written in vanilla JavaScript
Set of programs to test the implementation of the Zilog Z80 instruction set.
The World's Most Useless Arduino Platform.