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US 5,513,325 AGranted
Technique for coupling CTOS units to non-CTOS host
AssigneeUnisys Corporation
InventorsGeorge W. Harris, Jr., Shari J. Nolan
Life of this patent
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Abstract
An adapter arrangement for internetworking a non-CTOS computer with a network of CTOS terminals, including a system-bus, this arrangement being adapted for introduction into, and cooperation with, the non-CTOS computer and comprising CTOS-net bus for transferring signals from the system-bus plus a communication control stage for controlling and transferring signals to/from the CTOS network and a net-interface stage.
Claims26
A method for internetworking non-CTOS computer means with a network of CTOS terminals, this method including:
- providing said computer means with system-bus means, with CTOS-net bus means coupled and arranged to transfer signals to/from said system-bus with communication control means and net-interface means coupled and adapted to transfer signals between said CTOS-net bus means and said communication controller means and also providing associated network connections via a cluster-interface stage which is adapted to handle signals to/from said network connections;
- said CTOS-net bus means being made to comprise ISA-bus means adapted to deliver address, data and control signals, plus associated interface logic means;
- wherein said communication controller means is coupled and adapted to transfer clock and data signals;
- and include a CTOS cluster controller chip intercoupling said cluster-interface stage and said CTOS-net bus means;
- wherein said interface means comprises address buffer means, data buffer means and intermediating buffer control means for controlling signal flow to/from both buffer means;
- and wherein said data buffer means is coupled to said CTOS cluster controller chip via CTOS Boot ROM means which is made to include memory-control input means thereto;
- and
- wherein said interface means comprises address buffer means, data buffer means and intermediating buffer control means for controlling signal flow to and from both said address-buffer means and said data buffer means;
- and wherein said memory-control input means is inputted from both said Buffer means and said Buffer Control means;
- and wherein said Boot ROM is also coupled directly with both said Buffer means.
7 more elements
Dependencies are inferred from the claim text.