This is a harddrive emulator that emulates an HD for Tiki via a MMC card.
On the card there can be upto 2 HD images the represent the HD for the Tiki.
Maximum size is 8M per HD. This is due to the limitation in the Tiki CP/M.
The board can be bought as a kit or ready tested.
Schematics and other useful stuff can be found here.
Kit with all parts, Assembled and tested