ID:84054 When scanout register is applied, the corresponding input data must be from a scanchain, chainout data should be turned on, and the width_a should be 18

CAUSE: You selected a specific register in the altmult_add megafunction; however, the value of this specified parameter is not supported in this device family if the specific mode is not selected. 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, Intel recommends using the MegaWizard Plug-In Manager.