Interesting, if too short, thread from vintage-radio.net:
https://www.vintage-radio.net/forum/showthread.php?t=102997 (https://www.vintage-radio.net/forum/showthread.php?t=102997)
Other PCW links from the site:
https://cse.google.com/cse?cx=008872823631354711830%3A4sch4flwhxq&ie=UTF-8&q=amstrad+pcw&s=Search+this+website (https://cse.google.com/cse?cx=008872823631354711830%3A4sch4flwhxq&ie=UTF-8&q=amstrad+pcw&s=Search+this+website)
Note that the link above goes to a forum regarding use of the PCW as a terminal for something else. The forum includes a link to an article in another magazine detailing the design of the CPS8256 interface, including a circuit for a 'clone' of this interface, which certain people here might find useful?
The article for the clone is written by Brian Frost. I believe that this will be the same person who wrote another article recently quoted here for the 'scientific Interface' for the PCW, there credited as Brian J Frost.
Geoff
I've had a play with this and here is the result so far.
[attach=1]
(Also as alluded to here: http://www.cpcwiki.eu/index.php/UIDE_Universal_IDE_adapter_cards_for_Z-80_computers#PCW_Serial_.2F_parallel_port (http://www.cpcwiki.eu/index.php/UIDE_Universal_IDE_adapter_cards_for_Z-80_computers#PCW_Serial_.2F_parallel_port).)
This is a Z80 bus device, so would plug into a Z80 shim or the uIDE expansion port adapter. You can make a bus cable to connect it and the uIDE to the PCW using female IDC sockets mounted directly to a 40 way ribbon cable. This board is a clone of the Amstrad CPS8256 interface and so should work with the existing Amstrad drivers.
Only thing is, it is still on the "drawing board"; that is to say, I've not had boards fabricated or built one yet. There was no interest from other users.