My impression is that the "direct code interpreting is only for SAM & Spike tables, aka no table currently in TPA, as it's impossible for older ROM's to run directly on non-native devices... someone please correct me if I'm wrong.
Depends I guess the tables. The updated tables coming in the launch pack are whitestar which I belive runs on an arm chip. I'd assume for that all they'd need is source code for the roms. I don't think anything older than whitestar could be run natively. I could be wrong though.