Changes
* DDI-1 - a 3" disk drive units including the controller for the CPC464 computer
* FD-1 - a 3" disk drive as secondary disk drive unit for the CPC664, CPC6128 and CPC464 with DDI-1
[[Image:ddi1.gif|thumb|Amstrad FD-1/DDI-1 disk drive]]
Technically speaking, the two disk drives were identical, the only difference was that the DDI-1 shipped with controller, manual and CP/M 2.2 on one disk.
