diff --git a/led_matrix/key.v b/led_matrix/key.v
index f1fa483..a693e5c 100644
--- a/led_matrix/key.v
+++ b/led_matrix/key.v
@@ -3,7 +3,7 @@ module key_1(
     input wire sys_rst,  //J15
     //         d20,d19,b19,a20
     output reg c4, c3, c2, c1,
-    //         f16.f17,e18,e19
+    //         f16,f17,e18,e19
     output reg r4, r3, r2, r1,
 
     //          f20 f19 b20 c20 j16 k16 m18 m17 l17 l16 l15 l14 m15 m14 n16 n15
@@ -13,10 +13,10 @@ module key_1(
 );
 reg [7:0] KEY_CODE;
 
-parameter GET_START = 4'b0010;
-parameter GET_ROW = 4'b0010;
-parameter GET_COL = 4'b0100;
-parameter GET_END = 4'b1000;
+parameter GET_START = 4'b0001 << 0;
+parameter GET_ROW = 4'b0001 << 1;
+parameter GET_COL = 4'b0001 << 2;
+parameter GET_END = 4'b0001 << 3;
 reg STATUS = 4'b0000;
 
 
@@ -65,78 +65,9 @@ always @(posedge sys_clk or negedge sys_rst) begin
         x <= 8'b0000_0000;
     end
     else begin
+        x <= KEY_CODE
     end
 
-    case (KEY_CODE)
-    8'b1110_1110: begin
-        x <= 8'b0000_0001;
-        y <= 8'b0000_0001;
-    end
-    8'b1110_1101: begin
-        x <= 8'b0000_0010;
-        y <= 8'b0000_0001;
-    end
-    8'b1110_1011: begin
-        x <= 8'b0000_0100;
-        y <= 8'b0000_0001;
-    end
-    8'b1110_0111: begin
-        x <= 8'b0000_1000;
-        y <= 8'b0000_0001;
-    end
-    
-    8'b1101_1110: begin
-        x <= 8'b0001_0000;
-        y <= 8'b0000_0001;
-    end
-    8'b1101_1101: begin
-        x <= 8'b0010_0000;
-        y <= 8'b0000_0001;
-    end
-    8'b1101_1011: begin
-        x <= 8'b0100_0000;
-        y <= 8'b0000_0001;
-    end
-    8'b1101_0111: begin
-        x <= 8'b1000_0000;
-        y <= 8'b0000_0001;
-    end
-
-    8'b1011_1110: begin
-        x <= 8'b0000_0001;
-        y <= 8'b0000_0010;
-    end
-    8'b1011_1101: begin
-        x <= 8'b0000_0010;
-        y <= 8'b0000_0010;
-    end
-    8'b1011_1011: begin
-        x <= 8'b0000_0100;
-        y <= 8'b0000_0010;
-    end
-    8'b1011_0111: begin
-        x <= 8'b0000_1000;
-        y <= 8'b0000_0010;
-    end
-
-    8'b1011_1110: begin
-        x <= 8'b0001_0000;
-        y <= 8'b0000_0010;
-    end
-    8'b1011_1101: begin
-        x <= 8'b0010_0000;
-        y <= 8'b0000_0010;
-    end
-    8'b1011_1011: begin
-        x <= 8'b0100_0000;
-        y <= 8'b0000_0010;
-    end
-    8'b1011_0111: begin
-        x <= 8'b1000_0000;
-        y <= 8'b0000_0010;
-    end
-    default: x <= 8'b0000_1000;
-
     endcase
 end