Steddyman did develop an Amstrad PCW core for the Mister FGPA project.

Version two of this core is out since today, it features :

• Turbo support to 32Mhz
• Expanded memory support to a maximum of 2MB
• 3" and 3.5" disk support
• Dual disk drives
• PCW 8xxx and PCW9xxx model support
• All hardware Joysticks and Mice supported
• 4 colour mode support

You can see a youtube video of this core running an adventure game in 4 colours.