Method and apparatus for controlling information flow through a protocol bridge
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United States of America Patent
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Issued Date -
Jun 24, 2004
app pub date -
May 8, 2003
filing date -
Dec 24, 2002
priority date (Note) -
Abandoned
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Abstract
A method and apparatus for controlling information flow through a protocol bridge is disclosed. In one embodiment, circular queues in dual port memory are used for passing frame header information and control information between the hardware and a processor. In one embodiment, a `control bit` in each element in the dual port memory serves as a signaling mechanism for passing control of the circular queue elements between the hardware and the software. In another embodiment, a `skip bit` is used to simplify error handling by enabling the circular queue elements to be processed in a particular order even under error conditions.
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