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reg  [3:0]          divide;
reg  [3:0]          number;

   

   
always@(posedge clk )  led_pad_out <= PosL | update_value;
always@(posedge clk )  PosS        <= sw_pad_in;
always@(posedge clk )  PosB        <= btn_pad_in;
   
   

   
always@(posedge clk)
  if(reset)      divide <= 4'b0000;
  else
  if(one_usec)   divide <= divide+4'b0001;
  else           divide <= divide;
    
always@(posedge clk)   dp_pad_out   <= 1'b1;


   
always@(posedge clk)
  if(reset)                   an_pad_out <= 4'b1111;
  else
  if(divide[3:0] == 4'b0010)  an_pad_out <= 4'b1110;
  else   
  if(divide[3:0] == 4'b0110)  an_pad_out <= 4'b1101;
  else   
  if(divide[3:0] == 4'b1010)  an_pad_out <= 4'b1011;
  else   
  if(divide[3:0] == 4'b1110)  an_pad_out <= 4'b0111;
  else                        an_pad_out <= 4'b1111;



always@(posedge clk)
  if(divide[3:2] == 2'b00)  number <= PosD[3:0];
  else   
  if(divide[3:2] == 2'b01)  number <= PosD[7:4];
  else   
  if(divide[3:2] == 2'b10)  number <= PosD[11:8];
  else   
  if(divide[3:2] == 2'b11)  number <= PosD[15:12];
  else                      number <= number;

   
   
always@(posedge clk)
  if(reset)                   seg_pad_out <= 7'b1111111;
  else
  if(number[3:0] == 4'b0000)  seg_pad_out <= 7'b1000000;
  else   
  if(number[3:0] == 4'b0001)  seg_pad_out <= 7'b1111001;
  else   
  if(number[3:0] == 4'b0010)  seg_pad_out <= 7'b0100100;
  else   
  if(number[3:0] == 4'b0011)  seg_pad_out <= 7'b0110000;
  else   
  if(number[3:0] == 4'b0100)  seg_pad_out <= 7'b0011001;
  else   
  if(number[3:0] == 4'b0101)  seg_pad_out <= 7'b0010010;
  else   
  if(number[3:0] == 4'b0110)  seg_pad_out <= 7'b0000010;
  else   
  if(number[3:0] == 4'b0111)  seg_pad_out <= 7'b1111000;
  else
  if(number[3:0] == 4'b1000)  seg_pad_out <= 7'b0000000;
  else   
  if(number[3:0] == 4'b1001)  seg_pad_out <= 7'b0011000;
  else   
  if(number[3:0] == 4'b1010)  seg_pad_out <= 7'b0001000;
  else
  if(number[3:0] == 4'b1011)  seg_pad_out <= 7'b0000011;
  else   
  if(number[3:0] == 4'b1100)  seg_pad_out <= 7'b1000110;
  else
  if(number[3:0] == 4'b1101)  seg_pad_out <= 7'b0100001;
  else   
  if(number[3:0] == 4'b1110)  seg_pad_out <= 7'b0000110;
  else   
  if(number[3:0] == 4'b1111)  seg_pad_out <= 7'b0001110;
  else                        seg_pad_out <= 7'b1111111;