> Wouldn't it be cooler to understand the architecture, upgrade it and put it on an FPGA? Personally, I would refrain from "upgrading", but instead faithfully

> Wouldn't it be cooler to understand the architecture, upgrade it and put it on an FPGA? Personally, I would refrain from "upgrading", but instead faithfully recreate the digital circuits (simply on an FPGA instead of discrete logic), as it was apparently done in the referenced project. It's the same intention as when (re-)implementing Babagge's machines. If it's just to do Lisp programming on a modern machine, everything is already there.