The file is a specific ROM dump —a digital copy of the data stored on an Integrated Circuit (IC) chip from an original arcade circuit board. In this case, it is part of the Sega Billboard software set, specifically the data found on the second IC chip (IC2) of the board. File Size: 64.00 KB
Developers then wrote specialized drivers (like the segabill.cpp found in the MAME GitHub ) to tell the computer how to interpret that specific string of data. Why "MAME Exclusive"? epr18022ic2 mame download exclusive
The word "exclusive" in your search suggests there might be a special, single source for this file. In reality, such files are almost never distributed individually. There are several very good reasons for this: The file is a specific ROM dump —a