Bootleg/Clone Game boards
The bootleg, clone or copyboard, is a
non-original copy of a gameboard. Sometimes they
are exact duplicates of the original hardware or a totally
different 'bootleg' board design.
I'm in the process of documenting
a few of the bootlegs I've run into.
some really ancient IC's, SRAM, EPROMs. Totally obsolete in modern times but
used on plenty of older arcade boards.