From NeoGeo Development Wiki
DIPs (DIP switches) can refer to 3 kinds of configuration interface:
- Hardware DIPs: real DIP switches, which are found on MVS hardware to set the cab's configuration.
- Software DIPs: parameters for games like difficulty, lives... They're in the form of data stored in the MVS battery-backed RAM.
- Debug DIPs: normally not accessible. Pair of bytes used by developers to enable tests screens, hidden game modes, job meters...