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Last modified on 6 April 2010, at 19:37

Maplin ROM Box

Revision as of 19:37, 6 April 2010 by Nocash (Talk | contribs)

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) was 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.

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

  • ROM Box with ROMs

  • ROM Box

  • ROM Box and photocopy of how-to build manual

  • Connected showing ROMs

Manual

Weblinks