General Description: The datasheet for the CORE Generator Registered Adder states that the 16-bit wide non-loadable function requires 10 CLB's, while the Registered Loadable Adder datasheet indicates that a loadable version of the adder with the same bit width requires only 9 CLBs.
ソリューション
The Registered Loadable Adder datasheet is in error--both versions of a 16-bit adder require 10 CLB's.