Changes

The X-drives for the CPC 664/6128 are connected directly to the floppy port. To In order to provide VDOS, the "X-Modulmodule" (sometimes referred to as also called "VDOS module") had to must additionally be installed connected to the expansion port. This is contains a ROM board containing that contains a VDOS 2.0-X ROM and was also available with an additional RS232-C interface (then referred to as in this case called "XRS-Modulmodule"). The board supplied for the CPC 464 version came with in a chunky clunky housing in which both the "X(RS)-Modulmodule" and the DDI-1 controller had to be installed.