# From https://github.com/cliffordwolf/icestorm/blob/be0bca0/icefuzz/timings_lp8k.txt # NB: Inputs/Outputs must be ordered alphabetically # Inputs: CI I0 I1 # Outputs: CO SB_CARRY 1 1 3 1 186 675 609 # Inputs: I0 I1 I2 I3 # Outputs: O SB_LUT4 2 1 4 1 465 558 589 661