The thought occurred that you could emulate a commodore 64 on a Papilio Pro board.  It could emulate storage with USB.  There was a guy who emulated just a SID chip on a lower end Papilio One, in 2011.

http://papilio.cc/index.php?n=Playground.C64SID

Jeri Ellsworth emulated the entire thing on an FPGA back in 2004.

https://en.wikipedia.org/wiki/C64_Direct-to-TV

Despite this, the internet doesn't have anything for complete commodore 64's on a papilio pro.  The mane problem lions have had is the Vice emulator always crashing.  The problem with either fixing vice or making an FPGA version from scratch is a commodore 64 is useless.