Appeal No. 96-4106
Application No. 08/271,238
The act of emulation can occur in real time as in McDonald,2
or in lag time. In Figure 4 of McDonald, the second circuit
means includes the driver 44 and bus 10-4 (coupled to the
first circuit means via the first subprocessor unit 26),
address comparator 6-4 which receives the address signals on
bus 10-4, bus 11-4 which transfers address signals from the
second subprocessor unit 29 to the address comparator 6-4, bus
10-1 (coupled to the first circuit means via bus 15-1) to
transfer data signals from the first subprocessor unit 26 to a
data comparator 6-1, and a bus 11-1 which transfers data
signals from the second subprocessor unit 29 to the data
comparator 6-1. Any “miscompare” from the comparators 6-1 and
6-4 will cause error signals to be generated on outputs 51 and
58, respectively.
The obviousness rejection of claim 26 is sustained
because the contested limitations (i.e., the first and second
2Emulation is defined in the attached excerpts from the
Encyclopedia of Computer Science, Ralston (Editor), pages 535,
925, 927 and 928 (New York, Van Nostrand Reinhold Company,
1976).
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