Pretty hard to get it wrong as the edge connector only fits one way and usually the same is said with the floppy connector. BUT .. there IS a few floppy drives that have the pins upside down, so u might need to twist the cable around once .. most likely not tho.
So far: [http[Image://pchan.250free.com/CableOn1CableOn.JPG]
Note that this type of pc cable usually has some internally twisted cables .. make sure the CPC/PC does NOT have the twisted bit between them.