First-come first-serve arbitration protocol
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United States of America Patent
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-
Dec 28, 1993
Issued Date -
N/A
app pub date -
Apr 30, 1992
filing date -
Jan 31, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A first-come first-serve arbitration protocol arbitrates between processing agents seeking access to a common bus. The system is an extension of a parallel contention arbiter in which each agent has an identity value made up of two portions, one a fixed portion and one a variable portion. The variable portion of each agent's identity is incremented depending on how long the agent has been waiting for access to the bus and the variable portion is the most significant portion of each agent's identity. Thus in each arbitration in which the highest identity value is awarded control of the bus, the agent which has waited the longest will gain access to the bus prior to those which have not waited as long.
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