Hi, I'm trying to compile a library of rom functions for the DS80C400. The Most of the files compile without a problem. The ones I do have difficulties with all have inline assembler. Obviously these are all bracketed with the appropriate #pragma. Now I understand I can generate a .src assembler file with the SRC option. Thus far I have not been able to assemble one of these generated files. The reason for failure always being : xxx.SRC(x): error A45: UNDEFINED SYMBOL The .lst file is telling me what is undefined but beyond be able to add extern declarations which I've tried and don't work I don't know what to do next. I feel I should have to edit automatically generated files to get them to work - I have done to see how to get things to work, but its a bad way of working and everytime I change the any C and have to regenerate the file I have to start again. I have to admit this does sound like its going to be one check box somewhere to solve this but I haven't found it in any of the documention so far. So 1) do I need to go down to generating assembler files? 2) If so how do I resolve the scoping issues? Cheers Bernard