Appeal No. 95-1763
Application 08/109,201
said direct memory access device having a mode of
operation wherein said data channel is divided into an
input data channel and an output data channel which
operate independently of each other to respectively
input data to said destination address from a source
other than said source address, and output data from
said source address to a destination other than said
destination address.
B. The rejection
5. The examiner finally rejected all of the claims on
appeal under 35 U.S.C. § 103 in view of:
Magar et al. (US) 5,099,417 24 March 1992
(eff. filing date 13 March 1987)
6. The Magar patent teaches essentially the same data
processing device except for the specialized communications ports
and supporting circuitry. In particular, Magar does not teach
the split mode of operation and attendant circuitry.
CONCLUSIONS OF LAW
1. Only two limitations are contested. (Paper 19 at 3-5.)
The first limitation regards transfers between internal and
external sources and destinations. Appellants use the terms
"source" and "destination" broadly enough to encompass
communication through Magar's interface ports 24 & 26 as the
examiner suggests.
2. The second contested limitation, however, is not taught
in Magar. The examiner suggests that having a split-channel mode
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