Appeal No. 96-1286
Application 08/259,360
states comprising identical output states;
eliminating selected groups of the output states, the
selected groups not requiring programmable architecture
elements; and
assigning a programmable architecture element for each
remaining group of output states, each programmable
architecture element being for storing the responses of a
particular output state.
9. A look-up table architecture for performing AND, OR,
and XOR logic functions, the look-up table architecture
comprising:
a look-up table output terminal;
no more than four programmable architecture elements, the
programmable architecture elements for storing outputs, the
outputs being organized into output states, each output state
comprising responses of the AND, OR, and XOR logic functions
to a particular set of input variables, each programmable
architecture element being for storing the outputs of a
particular output state;
a plurality of logic gates coupled to the programmable
architecture elements and the look-up table output terminal,
the logic gates for gating the outputs stored in the
programmable architecture elements to the look-up table output
terminal; and
at least three input terminals connected to the logic
gates, signals being supplied to the input terminals, the
signals defining an input state to control the plurality of
logic gates, thereby facilitating the gating of an output
stored in a particular programmable architecture element to
the output terminal.
Opinion
We reverse.
4
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