the codes work and everything but i don't know how to but it on the Basys $3$ board with $.$xdc file spacilly the seven segment display for all four.

$`$timescale $1$ns $/1$ps

module Top $($

input clk$,$

input btn$\_$mode,

input btn$1,//$ Declare button inputs

input btn$2,$

input btn$3,$

input btn$4,$

input $[7$:$0]$ alu$\_$a$,$

input $[7$:$0]$ alu$\_$b$,$

output $[6$:$0]$ seg$\_$a$,$ seg$\_$b$,$ seg$\_$c$,$ seg$\_$d$,$

output $[15$:$0]$ result,

output div$\_$by$\_$zero

$)$;

$//$ Wires for FSM outputs

wire $[2$:$0]$ opcode;

wire mode;

wire alu$\_$enable;

$//$ Wires for ALU results

wire $[3$:$0]$ digit$0,$ digit$1,$ digit$2,$ digit$3$;

$//$ Convert the four buttons $($btn$1,$ btn$2,$ btn$3,$ btn$4)$ to $2-$bit btn$\_$sel

wire $[1$:$0]$ btn$\_$sel;

$//$ Define the logic for btn$\_$sel based on the button presses

assign btn$\_$sel $=\{$btn$3,$ btn$2\}$; $//$ Concatenate btn$3$ and btn$2$ for a $2-$bit selection

$//$ Instantiate the FSM module

calculator$\_$fsm fsm $($

$.$clk$($clk$),$

$.$btn$\_$mode$($btn$\_$mode$),$

$.$btn$1($btn$1),//$ Pass button states

$.$btn$2($btn$2),$

$.$btn$3($btn$3),$

$.$btn$4($btn$4),$

$.$opcode$($opcode$),$

$.$mode$($mode$),$

$.$alu$\_$enable$($alu$\_$enable$)$

$)$;

$//$ Instantiate the ALU

alu alu$\_$unit $($

$.$a$($alu$\_$a$),$

$.$b$($alu$\_$b$),$

$.$opcode$($opcode$),$

$.$enable$($alu$\_$enable$),$

$.$result$($result$),$

$.$div$\_$by$\_$zero$($div$\_$by$\_$zero$)$

$)$;

$//$ Instantiate binary to BCD conversion

binary$\_$to$\_$bcd bcd $($

$.$binary$($result$),$

$.$digit$3($digit$3),$

$.$digit$2($digit$2),$

$.$digit$1($digit$1),$

$.$digit$0($digit$0)$

$)$;

$//$ Instantiate SevenSegmentTruthTable for ones place

SevenSegmentTruthTable seg$1($

$.$x$3($digit$0[3]),$

$.$x$2($digit$0[2]),$

$.$x$1($digit$0[1]),$

$.$x$0($digit$0[0]),$

$.$a$($seg$\_$a$[6]),$

$.$b$($seg$\_$a$[5]),$

$.$c$($seg$\_$a$[4]),$

$.$d$($seg$\_$a$[3]),$

$.$e$($seg$\_$a$[2]),$

$.$f$($seg$\_$a$[1]),$

$.$g$($seg$\_$a$[0])$

$)$;

$//$ Instantiate SevenSegmentTruthTable for tens place

SevenSegmentTruthTable seg$2($

$.$x$3($digit$1[3]),$

$.$x$2($digit$1[2]),$

$.$x$1($digit$1[1]),$

$.$x$0($digit$1[0]),$

$.$a$($seg$\_$b$[6]),$

$.$b$($seg$\_$b$[5]),$

$.$c$($seg$\_$b$[4]),$

$.$d$($seg$\_$b$[3]),$

$.$e$($seg$\_$b$[2]),$

$.$f$($seg$\_$b$[1]),$

$.$g$($seg$\_$b$[0])$

$)$;

$//$ Instantiate SevenSegmentTruthTable for hundreds place

SevenSegmentTruthTable seg$3($

$.$x$3($digit$2[3]),$

$.$x$2($digit$2[2]),$

$.$x$1($digit$2[1]),$

$.$x$0($digit$2[0]),$

$.$a$($seg$\_$c$[6]),$

$.$b$($seg$\_$c$[5]),$

$.$c$($seg$\_$c$[4]),$

$.$d$($seg$\_$c$[3]),$

$.$e$($seg$\_$c$[2]),$

$.$f$($seg$\_$c$[1]),$

$.$g$($seg$\_$c$[0])$

$)$;

$//$ Instantiate SevenSegmentTruthTable for thousands place

SevenSegmentTruthTable seg$4($

$.$x$3($digit$3[3]),$

$.$x$2($digit$3[2]),$

$.$x$1($digit$3[1]),$

$.$x$0($digit$3[0]),$

$.$a$($seg$\_$d$[6]),$

$.$b$($seg$\_$d$[5]),$

$.$c$($seg$\_$d$[4]),$

$.$d$($seg$\_$d$[3]),$

$.$e$($seg$\_$d$[2]),$

$.$f$($seg$\_$d$[1]),$

$.$g$($seg$\_$d$[0])$

$)$;

endmodule