Input/output controller for a data processing system

Details Input/output controller for a data processing system Input/output controller for a data processing system

1985-11-15

1991-01-22

Clark, David L.

Boots, shoes, and leggings

G06F 906

Patent

active

049875302

ABSTRACT:
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.

REFERENCES:
patent: 4101967 (1978-07-01), Hajduk
patent: 4513174 (1985-04-01), Herman
patent: 4625307 (1986-11-01), Tulpule et al.
The Control Unit and Microprogramming, 1980, pp. 334-336.

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