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Created page with "{{Monolithic IC |Manufacturer=Motorola |Model=6821 |Part_nos=156- |Description="Peripheral Interface Adapter (PIA)" |Used_in=067-1137-99; }} is an I/O port controller for the Motorola 6800 family of microprocessors. It was second-sourced by several other companies. ==Used in== {{Part usage}} ==Links== * Peripheral Interface Adapter @ Wikipedia {{MissingPics}} Category:Microprocessors Category:Introduced in 19..."
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