I have a few different hacks for NFL Blitz 2000 (N64) that change the gamplay. Each of them are fairly simple, usually just changing constants or a few hex lines here or there. Can these changes be added to the game rather than compiling completely new ROMs with each specific change? For instance, I have 2 hacks, low gravity and fast tackling, that would be cool to turn on and off during the game (plus would be easier to just toggle them rather than booting up a whole new ROM). I know gameshark codes can modify the code, but as far as I'm aware, they can only modify the last 4 values of an address (out of 8 total). This can work in some cases, but others cannot. If I'm wrong (and the GS actually can modify a whole address), that would be perfect. Does anyone know if this is the case? Otherwise, does anyone know a different way to modify the ASM in game so I can toggle certain functions?