ID:84069 Illegal parameter value: parameter <name> = SUB is supported only for signed operations

CAUSE: The specified parameter value is illegal. 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 to regenerate the ALTMULT_ADD megafunction with a legal parameter value.