The source code of MAME (Multiple Arcade Machine Emulator) has long been freely available, but it's never been completely libre. Instead, it's been available under a modified BSD license that prohibits, among other things, commercial use of the code. MAME engineer Miodrag Milanovic explains that such a license was put in place to deter "misuse of MAME in illegal ways," but it also kept legitimate commercial entities doing business with the software. Examples of such could be museums that charge entry fees from using MAME in their exhibits, or copyright holders rereleasing vintage games encapsulated inside MAME. Now the projectwants to go fully open. Milanovic continues: "Our aim is to help legal license owners in distributing their games based on MAME platform, and to make MAME become a learning tool for developers working on development boards." As of yet, there are no specific details about the new license.