The relationship between FPGA internal hardware structure and code

FPGA The relationship between internal hardware structure and code

I/O Mapping

Give an input signal , Then output directly without any logic operation .

module line(
        input wire in,
        output wire out
    );
    assign out =  in;
endmodule

Mapping of combinatorial logic

module line(
        input wire in1,
        input wire in2,
        output wire out
    );
    assign out =  in1 & in2;
endmodule

And logical truth table

Input	Input	Output
in1	in2	out
0	0	0
0	1	0
1	0	0
1	1	1