So, Im working on PC Engine stuff, most games(roughly 9/10) do not work in any graphics editors and thus are likely compressed. I am trying out how to figure out to do so and I want to make sure I am on the right track. So what I am doing is learning 6502 ASM, then learn the concepts of the HU6280, learn the concepts of compressions that are traditionally used, undo the compression, make the changes I want then recompress or pad the rom to an acceptable size. So am I on the right track? Am I over/under complicating things? Thanks for the help all.