ID:83021 Cannot use <name> with unsigned data in altmult_accum megafunction with <name> device family inside DSP block

CAUSE: You tried to use SATURATION for unsigned data of the altmult_accum megafunction with the specified device family. However, unsigned data cannot use saturation for the specified device family in the DSP block. This warning usually occurs when you instantiate a megafunction directly in a text file rather than using the MegaWizard Plug-In Manager .

ACTION: If you want to use the specified feature in the specified DSP block, change to signed data. To avoid receiving this message in the future, Intel recommends using the MegaWizard Plug-In Manager.