ID:83006 Can't use feature <name> in altmult_accum megafunction with <value> device family and current set of parameters

CAUSE: You tried to use the specified feature of the MegaWizard Plug-In Manager .

ACTION: Change the width of the dataa and dataa ports to be less than or equal to 18, set the EXTRA_MULTIPLIER_LATENCY and EXTRA_ACCUMULATOR_LATENCY parameters to zero, and change the width of the result bus to less than or equal to (WIDTH_A + WIDTH_B + 16). To avoid receiving this message in the future, Intel recommends using the MegaWizard Plug-In Manager.