Appeal No. 97-0784
Application 08/174,648
DECISION ON APPEAL
This is a decision on appeal under 35 U.S.C. § 134 from
the final rejection of claims 9, 10, and 13-25.
We reverse.
BACKGROUND
The invention is directed to a method of maintaining
coherent shared memory in a computer system having unordered
communication.
Representative claim 9 is reproduced below.
9. A method of maintaining coherent shared memory within
a multiprocessor system including a plurality of memory
devices sharing a shared memory interval, comprising the
steps of:
sending a first request packet from a requesting
memory device directing a responding memory device having
a copy of the shared memory interval to perform an action
on the copy;
returning the first request packet to the requesting
memory device if the copy is in a transient state such
that the copy is the subject of an outstanding
transaction; and
resending the request packet to the responding
memory device, wherein the step of resending is performed
only after ensuring that the conditions under which the
original request was generated still dictate that the
request should be performed.
The Examiner relies on the following prior art:
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