Using the fast adders circuits in FPGA
Electrical Engineering Asked by Yogi Bear on February 1, 2021
Im confused on how to use the dedicated carry logic
The first image shows the schematic for a full adder using a MUX
It looks like one of the outputs are equivalent to A XOR B
One Answer
Usually you just need to use the behavioral addition operator + and the synthesis tools will do the Right Thing. The documentation should give you information about inferring a fast adder, if it is more difficult than that.
Answered by Elliot Alderson on February 1, 2021
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