Commodore 1571 Disk Drive 3D Box, thanks to Steen Karmark.
Diskette Diagnostic Manual 1571 Version 1.0 Preliminary, thanks to Jozsef Vamosi.
Assembly source code listing for 1571 ROMs: Disk Operating System and Controller Routines. Thanks to Ove Mejlgaard for the document.
Commodore 1571 User’s Guide.
Added Commodore Diskette Diagnostic Manual 1571 Version 1.0 Preliminary with thanks to Ove Mejlgaard.
Thanks to Pet/Dexion (Peter Mikael), Den Store Floppy bog in Danish is now added.