http://wisdom.sourceforge.net/
WISDOM is a 32-bit operating system with a primitive shell implemented. This is an effort to throw light into the design of an operating system which is an extensive and exciting field.
WISDOM is an OS created to boot from a floppy and communicate with parallel and serial ports. WISDOM will be particularly useful in a diskless system to communicate with external devices.
Check it out guys... If you are thinking about creating a new OS, this will definitely help, as we people had tried to comment it as much as possible.
Have fun!