Hello Geo/Alexander, I discussed this briefly in the chat, but I would like to know the current status of PilMCU (initial announcement here: http://www.mail-archive.com/picolisp@software-lab.de/msg04823.html).
It appears some work was released by Alexander within PilOS, and is being ported back to PilMCU. In any case, I think this project is very interesting and I would love to get involved with it. Geo: Have you chosen an FPGA? Is it "affordable"? Assuming you've gotten it running on actual hardware, I would be more than willing to pay for a simple devkit in order to hack on this. Thanks, AW