Nucleus RTOS
Nucleus RTOS is an real-time operating system (RTOS) created by Accelerated Technology, the Embedded Systems Division of Mentor Graphics for various CPU platforms.
The Nucleus RTOS is specially built for any embedded application including consumer electronics, set-top boxes, cellular phones, and other portable and handheld devices. The scalability allows the Nucleus RTOS to scale down to as small as 13 KB, for both code and data. The Nucleus RTOS has been used by Garmin International to develop the CNX80 navigational global positioning system (GPS) for general aviation.