I'd like to see tiny 80x86 boards (about the size of the Pi Zero) that you could boot DOS on, with full access to GPIO/SERIAL/PARALLEL etc. I know arduino exis

I'd like to see tiny 80x86 boards (about the size of the Pi Zero) that you could boot DOS on, with full access to GPIO/SERIAL/PARALLEL etc. I know arduino exists in this space, but for DOS lovers, little hobbyist boards like this would be great, and ideal for bootstrapping single purpose apps written in C.