Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1996-07-22
1998-08-11
Tarcza, Thomas H.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
345281, 345282, 345283, 345308, 380 49, G06F 300, G06F 1300, H04L 900
Patent
active
057939870
ABSTRACT:
A pluggable port adapter is used for connecting PCI devices to a host system through a PCI local bus while also adding functionality to the host system. The port adapter communicates with the host system through a port adapter/host interface that includes the PCI local bus and an auxiliary bus. The auxiliary bus is used for controlling the additional circuitry on the port adapter. A PROM on the adapter card is used for identifying the port adapter type, serial number and hardware revision. The auxiliary bus is used for conducting JTAG testing and is used by the host system to program logic devices on the port adapter. The logic devices can be reprogrammed in the field by the host system to repair bugs and to enhance performance and/or functionality. A power control circuit on the port adapter is controlled by the auxiliary bus for conducting hot swap operations.
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Addendum to Cisco News Release written by Steve Bauer entitled Cisco 7000 Gains Fast Ethernet Interface, Becomes Only Router Family to Support Three High-Speed Network Types released on Mar. 28, 1995 entitled Summary of Port Adapter and Fast Ethernet Interface Processor History.
Chapman John T.
Lee Glenn
Naegeli Charles J.
Quackenbush William L.
Tsiang David J.
Cisco Systems Inc.
Tarcza Thomas H.
White Carmen D.
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