IDA Pro newbie Tutorial (GBA, SNES, loader script, GDB debugger)

I modified the first post with a version of the GBA loader that doesn't map the header region twice, resulting in shifting everything by the header size (0xC0 bytes). For now, header infos (e.g. rom name) are not displayed and the first 0xC0 bytes are not labeled as "Header" since I can't find the exact reason of the bug, so I just commented out everything related to the header segment creation. Sloppy solution for now... modified loader can be found here if you don't wanna scroll up.