"If you are using the Raisonance tools you have and alternative, which is the asm {}; keyword

With this form you can simply do the following

C CODE
...
...
asm {0x00};
MORE C CODE"

I have, since my first exposure to Keil wondered why on earth they did not implement it this way, the SRC etc. way is ridiculous and I have not seen it in any other compiler.

Erik