Hello There's one source file which contais several functions. Some of functions should be generated ARM mode code and the other functions should be generated thumb code. I read the examples of interworking in the Keil MDK and I found that it is easy to set all the functions in one file to generate ARM code. But I didn't found how to set part of the functions to generate ARM code. In IAR, there's a keyword named __arm which sets the function to generate ARM code. Is there a similar keyword in Keil MDK? Who can tell me how to do it? Thanks.