I am running a program test it is giving the following error I tried many options but it is there
test.axf: error: L3900U: Unrecognized option '--scatter'. Target not created
Kiel is the capital of Schleswig-Holstein in Germany. Keil is the name of a company and a person.
Anytime someone posts a question "is it possible to implement it in xx tool", the most common answer is: That depends on how good you are.
Keil supplies a generic compiler. The limitations lies in the developer and in the target processor - not in the compiler.
Keil also supplies a ready-to-use real-time OS which obviously do support tasks, priority and synchronization.
It seems like you are doing things in the wrong order. Have you spent some time looking through the availble manuals and examples? Since there are examples making use of the RTX RTOS, you should know about its existence. And the online manuals should be able to answer specific questions.
http://www.keil.com/arm/rl-arm/kernel.asp
www.keil.com/.../rlarm_ar_technical_data.htm