The '''Amstrad Expansion System''' aka '''Maplin ROM Card''' from [[Maplin]] is a DIY project by [[Dave Goodman]] and [[John Attfield]].
The '''Amstrad Expansion System (Part 1) was ''' is primarily a '''rom box''' for the CPC series, but had additional features:
* Special non-standard Buffered Expansion Port (with pre-decoded IOSEL line, on access to "free" I/O addresss)
* Lightpen socket (3.5mm stereo socket - just a connector with LPEN,5V,GND - without any additional electronics)
The DIY project consisted of a 16 page instruction leaflet.'''Amstrad Expansion System (Part 2)''' adds some more features: * 6x8bit I/O port (using two [[8255 PPI chip]]s)* Additional power-supply module (PSU)
== Pictures ==