Hardware reference
A guide to low-level PCW programming.

Expansion schematic
An explanation of which pin does what on the PCW's expansion port.

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Systeme D's one venture into the PCW world was a conversion of RoutePlanner, the journey-planning package I originally coded for the CPC. It featured a full graphical front-end with pop-up windows and pointers, zoomable map, the option to calculate up to eight routes at once, and so on and so forth. It sold quite a few copies, principally via LocoScript Software, and I was very proud of it.

RoutePlanner PCW is no longer on sale, so if you can find someone who owns it, I have no objection to you taking a copy on an informal basis. If I get round to it, I may upload an image to this website so that it can be used on an emulator.