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The Zilog [[Z80 PIO]] chip (aka Z84C20) is a '''Dual 8bit''' I/O Port (not to be confused with the '''Triple 8bit''' [[8255 PPIchip]], which is sometimes referred to as PIO, too).

A [[Z80 PIO]] is used by the following CPC hardware expansions: * [[ACU Real Time Clock (DIY)]], and * [[Dk'tronics Real Time Clock]]* [[PDS development system]] == Datasheet == * [[Media:Z80pio z84c20.pdf]] - Zilog Z80 PIO Datasheet  [[Category:Programming]][[Category:CPC Internal Components]][[Category:Electronic Component]]