Difference between revisions of "Maplin ROM Box"
From CPCWiki - THE Amstrad CPC encyclopedia!
(→Pictures: Added 300dpi scans of two Maplin Boards' PCB) |
|||
| Line 38: | Line 38: | ||
* http://www.maplin.co.uk/ | * http://www.maplin.co.uk/ | ||
| − | [[Category: | + | [[Category:Expansion ROM]] [[Category:Peripherals]] [[Category:manual]] |
Revision as of 16:33, 19 December 2010
Contents
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 chips)
- Additional power-supply module (PSU)
Pictures
ROM Box with ROMs
ROM Box
ROM Box and photocopy of how-to build manual
Connected showing ROMs
PCB Top (1)
PCB Bottom (1)
PCB Top (2)
PCB Bottom (2)
.jpg)
.jpg)
.jpg)
.jpg)
Manual
- Amstrad Expansion System Part 1: Maplin ROM-Box Manual (pdf)
- Amstrad Expansion System Part 2: 6x8bit I/O Port (pdf)
