ID:84038 DSP block is using symmetric saturation, but the combination of parameters WIDTH_RESULT, WIDTH_A and WIDTH_B do not allow symmetric saturation

CAUSE: A hardware saturation circuit is being used with the altmult_add megafunction, therefore symmetric saturation can only be set in certain bit width combinations. This error usually occurs when you instantiate a megafunction directly in a text file rather than using the MegaWizard Plug-In Manager .

ACTION: To avoid receiving this message in the future, change symmetric saturation to asymmetric saturation or make the input data 18 bits wide. Intel recommends using the MegaWizard Plug-In Manager.