This guide shows how to connect up an SD card reader to a Ben Eater style 6502 homebrew computer and use it to read data from SDHC cards. The tutorial ends with being able to read arbitrary sectors ...

A rare 4 GB card produced piror to the ratification of SDHC. Compatibility of such cards is limited, as they operate outside of both the earlier or later standard. Image credit: Wirepath The first ...