Yes, it's a fun project but not related to any prior lispm hardware. On a similar note, I'm still plugging away on my MIT CADR fpga. It boots fine in simulation, but crashes on real FPGA hardware. It does show the debugger on a VGA screen with keyboard input, which is mildly interesting. You can even get emacs to run briefly. I don't know of any Symbolics compatible lispm-fpga work. I keep looking for a CAD files for the Ivory but no luck yet. -brad