Interesting. Saw this on the Wishbone Z80 project notes:
"Guy Hutchison (see TV80 project) has synthesized an early version of the core in a 130nm TSMC process. He determined the design to contain about 20k gates and run at about 240 Mhz. While the speed is somewhat less than "target", optimizations of the logic should increase this somewhat."
Guy Hutchison's TV80 is also mentioned on this project's page.
"Guy Hutchison (see TV80 project) has synthesized an early version of the core in a 130nm TSMC process. He determined the design to contain about 20k gates and run at about 240 Mhz. While the speed is somewhat less than "target", optimizations of the logic should increase this somewhat."
Guy Hutchison's TV80 is also mentioned on this project's page.