Full size SD card interface with CD and WP
Novel circuit (?) adds CD and WP using driven pins!
Propeller Forum member Rockiki has provided free (MIT licensed) code for the Propeller that can read and write files from a FAT16 formatted SD card (up to 2 GB).  The driver does not currently support directories so all files to be used must be in the root directory.

With the serial control app loaded, you can transfer files back and forth from the PC using the example Windows App provided.  The serial control application also shows how you can use the novel write-protect and card-detect circuits to detect if an SD card is inserted and to detect the position of the write-protect tab.