If you're going to throw AI at the problem, couldn't you get it to port the real Windows CE shell ?

"One cmake invocation goes from source to a bootable disc.gdi. No Platform Builder, no SDK install, no CD key." It's like the new emdash.

I actually love this because the entire time I owned a Dreamcast I used to look at the windows CE logo on the front and think, does it have windows CE in ROM? How can I boot it?