brickOS (formerly LegOS) is an alternative OS for The Lego Group's Mindstorms Robotics System. It is intended to allow an RCX owner to write programs for the RCX in C or C++ and download them to the robot. It includes APIs for control of the robot's inputs and outputs, LCD, and all other basic features of the RCX. It also includes advanced OS functionality, like threading, semaphores, and floating point math. Cross-compilers (which are necessary to compile the code) are available for RH 6.2, Debian woody, and all Windows/DOS variants.
