Changes
/* Hardware Expansions with external PPI */
== Hardware Expansions with external PPI ==
* [[IDE8255]](harddisk interface)* [[Panda Electronics Communications Interface Unit]](8bit printer port plus general purpose 8bit I/O port)* [[Maplin ROM Box|Maplins Amstrad Expansion System (Part 2)]](6x8bit I/O port, using two PPI chips)
== Datasheet ==
