Error: Port "datab[15..0]" of type lpm_compare0 of instance "U2" is missing source signal
Error: Port "IN" of type NOT of instance "U4" is missing source signal
Error: Port "IN1" of type AND2 of instance "U5" is missing source signal
Error: Port "IN1" of type AND2 of instance "U7" is missing source signal
Error: Can't elaborate top-level user hierarchy