You never know with COP maybe we will get c65 emulation (I don't really know enough about the c65) out the Chameleon 64?
Would be cool but it would not be via COP.
Jens is not interested in making emulation for really non-existance computer. There was even a question on how much to expand the C64 that would make it essentially a unique computer that never was.
With the power of the FPGA, a computer could be created that is a lot more powerful the c64 or most Amigas!
For a C65 you need to make a VIC III, DMAGIC and the CSG4510 CPU that has two of the 6526 CIAs in it in FPGA. The CPU and CIAs are kinda portable from the existing FPGA cores but the VIC III and DMAGIC would have to be reversed engineered. Some of the VIC II stuff would be ported over to the VIC III but not enough is know between these two chips and enough software for the VIC III to ever know if it was recreated 100%.
If you created the VIC II 100% from spec sheets, most of the really amazing C64 software would not work! It can do so much more than the spec sheets have listed.
I think the logical expansion of Chameleon with COP is a good idea. It could even support multimonitor. VIC II on the C64 and COP output on the other. You might even do overlay with COP doing background and the C64 sprites and other items on the screen or visa versa. Things like that could run on normal C64s and then have an enhanced mode for the Chameleon.