Hi Joan, floppy was an option on both 800 and 1000 but was so popular the 1000 then became 1000FD supplied with it.

The 650 was post 800 and had no floppy but a version with floppy, the 750 was them launched that loaded 1000 format files.

The 800 had a syp5 memory card and a similar ram pack was available for the G7 organ. The GN7 was later and a lower version of the GN9 which I don't think was marketed in the UK.