Microsoft Softcard

I've been on a cloning-hardware-in-KiCad kick lately, and I have one of these kicking around someplace, so I might as well document it for the future. The schematic has been captured from the original, and I think it matches the original...highlighted the nets in the original with the GIMP and verified that things that should be connected are connected and things that shouldn't be connected aren't (found a couple of errors that way). PCB layout is next.