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[[Image:Amstrad Expansion System.jpg|thumb|150px|Amstrad Expansion System]]

== Description ==

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)''' 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 '''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 ==

<gallery>
Image:ROMBOX_02.JPG|ROM Box with ROMs
Image:ROMBOX_03.JPG|ROM Box
Image:ROMBOX_04_MANUAL.JPG|ROM Box and photocopy of how-to build manual
Image:ROMBOX_05_SCREEN.JPG|Connected showing ROMs
</gallery>

== Manual ==

* [[Media:Maplin ROM-Box Manual.pdf|Amstrad Expansion System Part 1: Maplin ROM-Box Manual]] (pdf)
* [[Media:Maplins Amstrad Expansion System Part 2 (Project Book19).pdf|Amstrad Expansion System Part 2: 6x8bit I/O Port]] (pdf)

== Weblinks ==

* [http://en.wikipedia.org/wiki/Eurocard Info on EURO-card standard]
* http://www.maplin.co.uk/ 

[[Category:Memory expansions]] [[Category:Hardware]] [[Category:Peripherals]] [[Category:manual]]