“Use a Raspberry Pi as datassette drive with your Commodore 8-bit computer!
Features
Access Pi’s SD card from your Commodore to:
Load PRGs.
Save PRGs.
Traverse directories.
List current directory’s content.
Delete files.
Simple as possible, easy to build hardware interface:
No ICs, just a minimum amount of discrete components.
Only five connections need to be soldered (wires on the tape port plug).”