module ex1(

input [1:0] btn_i,

input [1:0] sw_i,

output reg [3:0] led_o,

output reg [6:0] seg_o,

output [3:0] an_o,

output dp_o);

always@(sw_i) begin

case(sw_i)

2'b00: led_o = 4'b0001;

2'b01: led_o = 4'b0010;

2'b10: led_o = 4'b0100;

2'b11: led_o = 4'b1000;

default: led_o = 4'b1111;

endcase

end

always@(btn_i) begin

case(btn_i)

4'h0: seg_o = 7'b0000001;

4'h1: seg_o = 7'b1001111;

4'h2: seg_o = 7'b0010010;

4'h3: seg_o = 7'b0000110;

default: seg_o = 7'b0000001;

endcase

end

assign an_o = 4'b1110;

assign dp_o = 1;

endmodule

## 7 segment display

NET "seg_o" loc = "l18";

NET "seg_o" loc = "f18";

NET "seg_o" loc = "d17";

NET "seg_o" loc = "d16";

NET "seg_o" loc = "g14";

NET "seg_o" loc = "j17";

NET "seg_o" loc = "h14";

NET "dp_o" loc = "c17";

NET "an_o" LOC = "F17";

NET "an_o" LOC = "H17";

NET "an_o" LOC = "C18";

NET "an_o" LOC = "F15";

## Buttons

NET "btn_i" LOC = "B18";

NET "btn_i" LOC = "D18";

## Switches

NET "sw_i" LOC = "G18";

NET "sw_i" LOC = "H18";

## Leds

NET "led_o" LOC = "J14";

NET "led_o" LOC = "J15";

NET "led_o" LOC = "K15";

NET "led_o" LOC = "K14";