Importance

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Abstract

The invention includes indirect addressing which is the realtime calculation of the location of variably offset fields in a frame in a high speed medium. Data frames in a communication medium, include a presence bit which indicates the presence of a variable length field whose length is defined by a length field in the data frame. In accordance with the invention, an Event Driven Interface has its input coupled to the data communications network, to receive the data frame and to identify the presence of the presence bit. In response to this, the Event Driven Interface branches to a first logic path which ignores the plurality of bits in the variable length field corresponding to the length field. Then, the Event Driven Interface branches to a second logic path after the plurality of bits have been ignored, to locate the variably offset field being sought in the data frame. This enables the realtime location of data at variable offsets in the data frame.

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First Claim