Serial protocol controller that supports subroutine calls

Details Serial protocol controller that supports subroutine calls Serial protocol controller that supports subroutine calls

2005-02-10

2009-02-17

Chan, Wing F (Department: 2619)

Multiplex communications

Diagnostic testing

C370S412000, C718S108000, C714S030000

Reexamination Certificate

active

07492718

ABSTRACT:
Described is a protocol controller that supports calls to a packet subroutine which includes a packet processing engine programmed to retrieve packets from a packet memory and to interpret the packets, a working chain pointer module of the packet processing engine programmed to generate a packet memory address for each packet and a return address register of the working chain pointer module, adapted to store a return packet address. Upon processing a call packet, the packet processor engine instructs the working chain pointer module to save a next packet address of a normal packet flow in the return address register, and instructs the working chain pointer module to generate the packet address to execute the packet routine.

REFERENCES:
patent: 5274817 (1993-12-01), Stahl
patent: 6425101 (2002-07-01), Garreau
patent: 6567839 (2003-05-01), Borkenhagen et al.
patent: 7145913 (2006-12-01), Craig et al.

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