The ports used by Amstrad and compatible interfaces use:
* Port FA7Eh &FA7E - Floppy Motor On/Off Flipflop* Port FB7Eh &FB7E - FDC 765 Main Status Register (read only)* Port FB7Fh &FB7F - FDC 765 Data Register (read/write)
The [[Vortex Disc Drives|Vortex disc interface]] uses other ports. See its dedicated wiki page.