Copyright (C) 2013 MakeStuff (http://makestuff.eu)
This documentation describes Open Hardware and is licensed under the CERN Open Hardware Licence v1.2. You may redistribute and modify this documentation under the terms of the CERN OHL v1.2 (http://ohwr.org/cernohl). This documentation is distributed WITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR PURPOSE. Please see the CERN OHL v1.2 for applicable conditions.
This is the USB MegaDrive DevKit v2 bridge-board. It connects to the MegaDrive cartridge-slot on one side and a MakeStuff LX9 FPGA board on the other side.
The design files are in KiCad format (http://www.kicad-pcb.org). I used this:
...running on x86_64 Ubuntu 12.04.