Changes
/* Software's issues */
The side switcher and A-B drive's switchers are needed only if you use old softwares, as most of them couldn't really figure they were loaded from B drivers, or has no such feature as double sided drives.
They were designed for good old 3" drive so the 750 720 DD extgernal 3"1/2 is not implemented.
But modern softwares designers can allow this fairly more easily.
Orion Prime use the DD feature.
Rick Dangerous 128+ (1.1 addon) seems to allow the game to be loaded from the B drive.
It is to the CPC-scene to design their softwares to include those, allowing more un-modded drives to be simply used as external B drives with no need to add extra buttons and cable montages on the Amstrad.
== Softwares released on 3"1/2 disk==
