Holy mother of...! I always wanted one of these, but not at all cost.
The C64DX/C65 seem to be emulated and is also well-documented. Have anyone ever attempted to clone it?
It never reached a fully developed state. The prototypes sold were all at different stages of development; some were in a semi functional state (but alpha level at best), others didn't even start. So if what you are looking for is a fully functional consumer level product, there wouldn't be much to "clone"...
