ID:84044 <name> must use register for input scan chain with <name> device family

CAUSE: You select the input scan chain of the altmult_add megafunction and no register in the input; however, you cannot use scan chain without input register. 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.