Input/output controller for a data processing system

摘要

A data processing system having a local memory bus, a main memory coupled to the local memory bus and a host central processing unit coupled to the local memory bus includes a single input/output controller for interfacing a plurality of input/output devices to the local memory bus. The input/output controller includes a plurality of input/output device controllers, each input/output device controller being adapted to be connected to at least one input/output device, a single microprocessor for managing the overall operations of the input/output controller, a single buffer memory for storing a program of instructions for the microprocessor and temporarily storing data received from the input/output devices and a gate array for interfacing all of the input/output device controllers to the local memory bus.