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/* Technical Details */
'''Amstrad''' made two different [[disk drives]] for the Amstrad/Schneider CPC range:
* DDI-1: a set consisting of the real DDI-1 (= Disk Drive Interface) and a FD-1 3" disk drive, as well as the CP/M 2.2 license and disk.<br> This set was for the CPC464 which didn't have a built-in [[765 FDC]] disk controller.
There was no official external disk drive for the 6128Plus or even the 464Plus. The difference between a CPC664/CPC6128 and a 6128Plus was simply a changed pin-out which can easily be solved by a new plug on the disk drive's cable.
The 464Plus was harder to equip with a disk drive. Although the pin-out of the expansion port was left unchanged, the DDI-1 cannot be used on the 464Plus without modifications(see [[Connecting a Disc Interface to CPC464+]]).
== Technical Details ==
Note that the drive also powered the DDI-1 interface when used together with it. Certain pins documented as N/C in the CPC664/CPC6128 manual in fact carry +5V from the drive to the controller.
The main reason for this was that you couldn't connect a standard drive with a more common format (5¼" in the beginning, 3½" later and today) and thus cheaper disks as drive A: without modifications, as the DDI-1 wouldn't work without the power fed from the FD-1.
Details on [[AMSDOS]], Amstrad's implementation of [[CP/M]] can be found in [[Soft158A:_DDI-1_Firmware_-_The_Complete_CPC_464_DOS_ROM_Specification|DDI-1 Firmware SOFT158A]].
== Pictures ==
<gallery caption=">Image:Fd-1.jpg|FD-1 (disc drive)Image:DDI - 1">Tomdalby.jpg|DDI-1 (disc interface)Image:DDI-1 ISS3 MF0004B.jpg|DDI-1 (pcb)Image:ddi1DDI Schematic.gifpng|DDI-1 (schematic)Image:Gerald DDI-1 MF0004B.jpg|DDI-1 (top)Image:Gerald DDI-1 MF0004B-Back with ABBA switch mod.jpg|DDI-1 (bottom)Image:DDI1_PCB_Top.jpg|MF0004B Models 9,5,3 and 1 PCB (top)Image:DDI1_PCB_Bottom.jpg|MF0004B Models 9,5,3 and 1 PCB (bottom)Image:ACU850102 -012.jpg|Advert (ACU Jan 1985)Image:Amstrad FDComputer User8504 044.jpg|Advert (ACU Apr 1985)Image:DDI-1_cable.jpg| DDI-1/cable pinoutImage:DDI-1 disk .jpg|DDI-1 - complete with manual, interface, FD-1 drive& CF-2 discs
</gallery>
* [http://www.cpcwiki.eu/manuals/ddi-1.zip Amstrad DDI-1 (English) Manual]
* [http://www.cpcwiki.eu/manuals/DDI-1.es.rar Amstrad DDI-1 (Spanish) Manual]
* [[Media:DDI-1_Handbuch.pdf]] (German) Manual
== Service Manual ==
* [http://www.cpcwiki.eu/manuals/DDI-1%20FD-1%20Service%20Manual.en.rar Amstrad DDI-1 FD-1 Service Manual]
== Datasheets == * [[CategoryMedia:HardwareUPD765 Datasheet OCRed.pdf]] - uPD765 disc controller* [[Media:FDC9229BT Datasheet.pdf]] - FDC9229BT data separator (that usually assists the uPD765 chip)* [[Media:DDI Schematic.png]] - DDI-1 Schematic (disc interface for CPC464) [[Category:Peripherals]] [[Category:Manual]][[Category:DATA Storage]][[Category:CPC Internal Components]][[Category:Amstrad Products]]
