05793987 is referenced by 141 patents and cites 9 patents.

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.

Title
Hot plug port adapter with separate PCI local bus and auxiliary bus
Application Number
8/685941
Publication Number
5793987
Application Date
July 22, 1996
Publication Date
August 11, 1998
Inventor
Glenn Lee
Fremont
CA, US
John T Chapman
Cupertino
CA, US
David J Tsiang
Menlo Park
CA, US
Charles J Naegeli
Montara
CA, US
William L Quackenbush
Palo Alto
CA, US
Agent
Marger Johnson et al
Assignee
Cisco Systems
CA, US
IPC
H04L 9/00
G06F 13/00
G06F 3/00
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