I expanded my FFVI ROM to 6mb and am trying to point some data (song pointers, jump commands in events, LDA jumps, sprite sheets, anything) to point to this new expanded data, and it is not working. I have data at 400000, so I point my pointer to 00 00 40 (400000), and this is not working. I can't seem to get anything to jump to this new data, but I've seen it done in other hacks that go to 400000 + past FF/FFFF.
Is there something else that I need to do in order to allow the game to recognize pointers & jumps to expanded data after 3FFFFF?
I've heard thus far from asking around the FFVI hacking circle that I would need to change some code to load from the extra banks, and it might have to do with the "rom mapper" and/or the internal header, but aside from this info I am not sure what to do or where to find these things to edit and was hoping the knowledgeable hackers here might know.