hello kai , hello mark , hello rwap ...
I made a blog 8 years ago ... but it is not up to date ... I hope to update it quickly ...
at the time, I made an article on my floppy disk mageco ... the article is not finished ....
but, it will give you an idea of how the floppy disk works ...
I have two floppy disk mageco .... and one of the interfaces has additional functions in its menu compared to the first interface ...
here is the blog :
http://zx81.over-blog.com/
thank you (excuse me for my english ... i m french)