Gents, I've added a missing entry in respect to 8K Sector Copiers. I created a commercial copier for the AmstradCPC which was sold via Nemesis Software and by mail in.
https://github.com/muckypaws/AmstradCPC
The files are located: https://github.com/muckypaws/AmstradCPC/tree/master/8KCopier
If you're interested.
I also created a version for Sector #48 copiers which was sold as standalone, as part of the Bonzo package from Nemesis, and integrated into Nirvana from Goldmark systems.
Kind Regards Jason (aka The Argonaut) amongst other names. muckypaws.com