Any speculation as to whether the "CPU" in this C64 device is an embedded core from a modern CPU like a MIPS, or a totally custom device? I would think it's too much trouble to make a new chip from the C64 blueprints, especially of the SID. We *did* just have a few threads on why it would be practically impossible to remanufacture the OCS / AGA chipsets.
The prototypes appear to be little more than an FPGA and a ROM chip so presumably it's completely custom.
