This is a port of Mist NES core to Poseidon with an EP4CGX150DF27I7 FPGA that can be found at https://github.com/mist-devel/nes/tree/master. There are some timing warnings that will be solved if time permits. ;)
This is a port of Luddes NES core to the MIST. See his FPGANES blog at http://fpganes.blogspot.de for details. The original source code can be found at https://github.com/strigeus/fpganes. Many changes ported from https://github.com/MiSTer-devel/NES_MiSTer.