I am making this effort in the interest of science. This thread is my attempt to start a specification for arcade ROM scanning based on the ‘native’ validation method employed by MAME and FB Alpha. MAME’s own validation is characterized below. CRC scanning romset zip and 7z files doesn’t make sense in that context – it’s too different from the ‘native’ validation approach used by MAME. Within any given MAME or FB Alpha ROM set, there could be one of four distinct, totally valid zipped romsets or one of four different, equally valid 7z archives for the same title.
