@N: MF916 |Option synthesis_strategy=base is enabled. 
@N: MF248 |Running in 64-bit mode.
@N: MF666 |Clock conversion enabled. (Command "set_option -fix_gated_and_generated_clocks 1" in the project file.)
@N: FX1143 |Skipping assigning INTERNAL_VREF to iobanks, because the table of mapping from pin to iobank is not initialized.
@N: BN225 |Writing default property annotation file /iscsi/share/farm/wenxuan/IIR/Ref_Design_1218/Gowin_IIR_Filter_RefDesign/Ref_Design/src/iir_filter/temp/IIR_Filter/rev_1/iir_filter.sap.
