CIA (Complex Interface Adaptor)

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The Amiga contains two CIA's, known as CIA-A and CIA-B although they are both the same chip. The CIA's are responsible for, or take part in various I/O functions such as the serial, parallel and joystick & mouse ports.

Chip Number Part Number Used In
8520 391078-01
8520A-1PL 391078-02

Thanks to Mirko Alexander Stuffe