(This is cool, not just because of the hipness of the the retro-video-game thing; the fact that you can make a small FPGA chip emulate any digital circuit, from a Pac-Man board to a Commodore 64 with an IDE interface bolted onto it, all by downloading the right information into it, is very cool. Now you have hackers creating open-source "hardware" components for FPGAs; i.e., code which, when integrated into a project, makes a complete 6502 core or USB interface or whatever, and others bolting them together to make all sorts of highly miniaturised gadgets. Unfortunately, FPGAs seem to only work for digital circuits, so something like a purely analogue open-source TB-303 core (suitable for embedding into mobile phones, childrens' toys and other gizmos) would not be possible.)
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