7 PI-RTOS: Platform Independent RTOS

This paper proposes a Real-Time Operating System kernel for the 32-bit Leon3 processor. A system is said to be Real Time if it is required to complete its work and deliver its services on time. In a real-time system the correctness of its output, is an important factor, depends not only the logical computations carried out but also the time at which the results were delivered to the external interface. A Real time operating system (RTOS) is a class of operating system intended for real time applications. The requirements for developing an RTOS include RMS scheduling algorithm, file management scheme, interrupt handling, Timer etc. Most of these functions are in POSIX 1003.1b compliant. tsim simulator is used for compilation and debugging.