translation is difficult.
what CNC versions available (Turning / Milling)?
6TB-2 and 6MB-2 possibly?
what Fanuc version is closest emulated? ('M52', etc version) how many chips in the full set?
will your 6MB-2 version support existing machine options such as 5 axis? what is cost?
is this a full rewrite for series 6 (or just Fanuc firmware modified for no wait state, and overclocked CPU)?