The DIY project consisted of a 16 page instruction leaflet.
== Maplin's Amstrad Projects ==
Maplin released various projects. The Amstrad CPC related ones are:
* MAPLIN PROJECTS BOOK 18 - Amstrad Expansion System Part 1: an external ROM card system for the Amstrad
* MAPLIN PROJECTS BOOK 19 - Amstrad Expansion System Part 2: describes the 6 x 8-bit parallel I/O Port and PSU Card
* MAPLIN PROJECTS BOOK 20 - Amstrad 8 Bit Input Port
== Pictures ==