Quote Originally Posted by Legolas
Another way to debug is to use the new GDB stub for Desmume emulator.
:thumbup: free and open source
:thumbup: it works with gdb/insight, so source level is allowed
:doh: less advanced than no$gba
:doh: at this time it's very unstable

However no plans for a demo yet
This sounds interresting. If you have gdb working, it becomes then very easy to make the FPC IDE debug the program.