[chirp_devel] Yaesu FT-1802 and FT-817 support?

I've got a Yaesu FT-1802 and FT-817 here I'd really like to use with Chirp. They are both cloning-cable radios, so I assume I could use the existing Yaesu cloning system once I figure our how the memory is mapped. My guess is that the FT-1802 is very similar to the FT-2800.

Where should I start? Has anyone poked at either of these radios before? I know there is existing programming software for the FT-817, but I couldn't find documentation of the memory map.

Tom KD7LXL