The '''Amstrad Expansion System''' is a DIY project by Dave Goodman and John Attfield. The Amstrad Expansion System was primarily a rom box for the CPC series, but had additional features: * 128 - 8bit I/O port.* Motherboard extension plug for EURO-card modules. The DIY project consisted of a 16 page instruction leaflet.#REDIRECT [[Maplin ROM Box]]