H - Electricity – 04 – L
Patent
H - Electricity
04
L
340/85
H04L 5/00 (2006.01) G06F 13/38 (2006.01)
Patent
CA 1112326
INTERFACE SYSTEM PROVIDING INTERFACES TO CENTRAL PROCESSING UNIT AND MODULAR PROCESSOR-CONTROLLERS FOR AN INPUT-OUTPUT SUBSYSTEM Abstract of the Disclosure A sub-interface system within an Input-Output Subsystem of a digital data processing system. The interface subsystem comprises a Main System Interface of a central processing unit working with the distribution-control means of a Base Module housing a group of Line Control Processors (individual Intelligent I/O Interface units) dedicated to a specific peripheral device. The Main System Interface is designated as an IOT, or Input-Output Translator, and translates input-output instructions into proper form for delivery to a particular intelligent interface unit which can execute the instructions. The IOT provides a data link identifier to identify each particular data-transfer transaction and receives result information from the Line Control Processor and Base Module to keep the Main System informed of the status or completion of each individual data-transfer operation. The Input-Output Translator provides a selection of priority to be given to competing Line Control Processor requests for access to Main Memory and communicates with individual Line Control Processors in their control of data-transfer operations between various peripheral devices and the Main Memory of the System. - 1 -
286460
Burroughs Corporation
R. William Wray & Associates
LandOfFree
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