ThreadX is a popular RTOS by Express Logic. It is small and easy to handle. Extensions for MS-DOS file system (FileX), Networking (NetX), Graphics (PegX) and USB (UsbX) make it adaptable to a wide range of tasks. ThreadX is royality free and deployed over 400 million times. More information can be found at Express Logic's homepage.
The ThreadX port for the LEON processors bundles ThreadX with the GNU compiler toolchain and newlibc for both Windows and Linux hosts. Added features are:
A ThreadX program is created by:
$sparc-threadx-gcc demo.c -o demo.exe