This is a ROM dump of an EPROM I found socketed in the "empty" socket of my C128. The label on the EPROM says: Super Chip Chip "A" 2.0 I don't have any original documentation on it. It adds the following features to the function keys in C128 mode: F1 = Nibbler F2 = GO64:LOAD":*",8,1 F3 = File Copier F4 = Seq file reader F5 = Terminal F6 = Screen Dump It may do more, but that's all I've figured out.