Each real time kernel port consists of three files that contain the core kernel components and are common to every port, and one or more files that are specific to a particular microcontroller and or compiler. + The FreeRTOS/Source directory contains the three files that are common to every port - list.c, queue.c and tasks.c. The kernel is contained within these three files. croutine.c implements the optional co-routine functionality - which is normally only used on very memory limited systems. + The FreeRTOS/Source/Portable directory contains the files that are specific to a particular microcontroller and or compiler. + The FreeRTOS/Source/include directory contains the real time kernel header files. See the readme file in the FreeRTOS/Source/Portable directory for more information.