Interface circuit for subsystem controller

Details Interface circuit for subsystem controller Interface circuit for subsystem controller

1981-12-01

1984-04-17

Springborn, Harvey E.

Boots, shoes, and leggings

G06F 1516, G06F 1520

Patent

active

044438508

ABSTRACT:
An interface circuit for a subsystem-controller is used in a data communications network. The interface circuit has a first (DLI) data link interface logic unit which includes a PROM sequencer which, when initiated by a master processor in the subsystem, acts to transfer data between a main host computer and a shared memory unit in the subsystem-controller. The interface circuit further includes a second (MLI) message level interface logic unit which is controlled by a slave processor (NDL) through the master (MLI) processor and functions to edit, translate and manage protocols for data transferred to and from a selected line communications processor which services a plurality of remote terminals.

REFERENCES:
patent: 3530438 (1970-09-01), Mellen et al.
patent: 3787673 (1974-01-01), Watson et al.
patent: 4091455 (1978-05-01), Woods et al.
patent: 4280193 (1981-07-01), Baun et al.

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