Appeal No. 2003-2108
Application No. 08/881,123
deactivated (see col. 14, lines 43-54), here for example, see
Fig. 4, . . . and the deactivation of the DMA grant signal on the
DMA grant line 374B when the DMA controller 340, that controls
the floppy disk controller 344, deactivates the DMA request line
on the DMA request line 374A to indicate to the bus arbitration
control circuit 370 that the DMA operation is completed.” We
additionally agree with the examiner (answer, page 4) that “the
access actuation signal is different from the request signal
. . . . ”
Based upon the foregoing, appellant argues (brief, page 8)
that the examiner has attributed the functions of both the
claimed priority controller and the memory controller to the bus
arbitration control circuit 370. In response, the examiner
agrees (answer, page 9) that “the DMA grant signal generated by
the bus arbitration control circuit 370 in response to the DMA
request to the bus arbitration control circuit 370, serves both
as the DMA ACKNOWLEDGMENT signal and ACCESS ACTUATION signal.”
If each grant output signal from the bus arbitration control
circuit 370 in Craft functions as both an acknowledgment signal
and an access signal, then we agree with the appellant’s
arguments (brief, page 9; reply brief, page 3) that a grant
output signal from the bus arbitration control circuit 370 is
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