Error (13264): Can't resolve multiple constant drivers for net "n1"

Description

Due to a problem in the Quartus® Prime Pro Edition Software version 23.4, you might see this error message when you have a Verilog/System Verilog HDL file that maps input ports to values with direct decimal. For example: .input_signal ( 1 ).

Resolution

To work around this problem, change the direct decimal value to 'base<value> syntax.  For example: change .input_signal ( 1 )  to .input_signal ( 'b1 ).