I need a GUI based RTOS ,with code, which can be executed on the windowsXP. I will be thankful if you have it and provide it to me waiting for your kind reply

Hi, I’m not sure what you mean by GUI based RTOS – WinCE? FreeRTOS does not have a GUI.  If you are referring to a development tool with a GUI then there are plenty – take a look at the port pages on the WEB site.  The Keil simulator and Open Watcom ports are good for viewing the RTOS operation from a Windows GUI debugger. Regards.