== Notes ==
* The universal solution connects a 3" or 3 1/2" disk drive to any CPC with disk controller
** You can even use Part A for connecting a 3" disk drive to a CPC664/CPC6128/CPC6128plus and Part Bx for connecting a 3 1/2" disk drive to a CPC464 with DDI-1 at the same time
** Part Bx, which is also the full cable for the CPC464 with DDI-1, can even be used to connect the PC drive as A: on the DDI-1, though this doesn't work with all drives.
* Although schematics for drives without own RDY-Signal are given, it is highly recommended to use drives with RDY to ensure maximum compatibility. The only todays drive known to be resolderable to output a RDY-signal is the Samsung SFD-321B and many drives won't work as A: on the CPC464+DDI-1 without a permanent RDY though.
* These schematics differ from most existing schematics on the web in that way, that they don't use GND to pull signals active low, but the /DRIVE SELECT line via diode. This ensures that the other drive on the bus doesn't become influenced. You can solder the wire containing the diode directly (without the diode) to a GND-wire and you will get the same as described in other tutorials but the side switch and - if applicable - the permanent RDY will also be in effect for the other disk drive then.
== Schematics ==
=== Universal solution (CPC464+DDI-1, CPC664, CPC6128, CPC6128 German, and CPC6128plus) ===
==== Part 1A: Replacement cable for original Amstrad/Schneider FD-1 ====
[[Image:Universal FD-1.jpg|frame|none|Replacement cable for Amstrad/Schneider FD-1 on any CPC]]
==== Part 1.1B1: Makes a PC disk drive with RDY behave like a DDI-1 ====
[[Image:DDI-1 - 3.5 w RDY.jpg|frame|none|Makes a PC disk drive with RDY behave like a DDI-1]]
==== Part 1.2B2: Makes a PC disk drive without RDY behave like a DDI-1 ====
[[Image:DDI-1 - 3.5 wo RDY.jpg|frame|none|Makes a PC disk drive without RDY behave like a DDI-1]]