8255 PPI chip

The 8255 PPI (Programmable Peripheral Interface) is a general purpose I/O chip.

The Internal PPI in CPC

• See 8255 (controls cassette, keyboard, psg, etc.)

Hardware Expansions with external PPI

• IDE8255 (harddisk interface)
• Panda Electronics Communications Interface Unit (8bit printer port plus general purpose 8bit I/O port)
• Maplins Amstrad Expansion System (Part 2) (6x8bit I/O port, using two PPI chips)
• Schneiderware Centronics Port (8bit printer port, using one PPI chip)
• Schneiderware Uni-PIO (6x8bit I/O port, uses two PPI chips)
• Schneiderware EPROM Burner (28-pin Eprommer, uses two PPI chips)

Datasheet

• Media:PPI M5L8255AP-5.pdf PPI Datasheet (Mitsubishi)