Rich Mellor has kindly sent me an article showing how to use the HxC floppy disc emulator. The HxC device connects to a standard QL floppy disk interface and allows you to use an SD card to store floppy disk images for use with your QL. The instructions are available to download as a PDF file from the Replacement Manuals page on my website at http://www.dilwyn.me.uk/docs/manuals/Sinclair%20QL%20How%20To%20Use%20HxC%20Article.pdf