Many later NES games use MMC3. This mapper not only switches program and graphics banks but tracks how much the PPU has drawn. This helps a game split the screen for parallax or a status bar. Watch me emulate it
https://youtu.be/gsJtk8ognog

Many later NES games use MMC3. This mapper not only switches program and graphics banks but tracks how much the PPU has drawn. This helps a game split the screen for parallax or a status bar. Watch me emulate it
https://youtu.be/gsJtk8ognog
