embOS

embOS is a real-time operating system for embedded applications designed to offer the benefits of a fully fledged multitasking system at minimum cost. The kernel is fully interruptible and so efficient that it can be used in very time-critical situations. The memory footprint in both RAM and ROM is so small that it can be used in single-chip applications, leaving maximum room for the user-program.

Other features of the operating system include:

• preemptive scheduling of tasks
• unlimited number of mailboxes and semaphores
• support for nested interrupts