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

A FREE comprehensive reverse engineering tutorial covering x86, x64, 32-bit/64-bit ARM and embedded RISC-V architectures.

A blazingly fast JSON serializing & deserializing library

Continuous Unix commit history from 1970 until today

Safe, fast, small crypto using Rust

Virtual Apollo Guidance Computer (AGC) software

Raspberry Pi ARM based bare metal examples

A book teaching assembly language programming on the ARM 64 bit ISA. Along the way, good programming practices and insights into code development are offered which apply directly to higher level la…

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.

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…

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

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

Kernel for z80 calculators

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