top.cst

IO_LOC "led" 18;
IO_LOC "clk24" 35;

top.v

module top(clk24, led);
  input clk24;
  output led;

  reg [8:0] counter;

  always @(posedge clk24) begin
    counter <= counter + 1;
  end

  assign led = counter == 1'b0;

endmodule

top.vg

/* Generated by Yosys 0.9+3656 (git sha1 dfeff65c, gcc 10.2.0 -march=x86-64 -mtune=generic -O2 -fstack-protector-strong -fno-plt -fPIC -Os) */

/* top =  1  */
/* src = "top.v:1.1-13.10" */
module top(clk24, led);
  /* src = "top.v:2.9-2.14" */
  input clk24;
  wire clk24_IBUF_I_O;
  /* src = "top.v:5.13-5.20" */
  wire \counter[0] ;
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:34.28-34.29" */
  wire \counter[0]_DFF_Q_D ;
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:38.25-38.27" */
  wire \counter[0]_DFF_Q_D_ALU_SUM_COUT ;
  wire \counter[0]_DFF_Q_D_ALU_SUM_I0 ;
  /* src = "top.v:5.13-5.20" */
  wire \counter[1] ;
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:34.28-34.29" */
  wire \counter[1]_DFF_Q_D ;
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:38.25-38.27" */
  wire \counter[1]_DFF_Q_D_ALU_SUM_COUT ;
  wire \counter[1]_DFF_Q_D_ALU_SUM_I0 ;
  /* src = "top.v:5.13-5.20" */
  wire \counter[2] ;
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:34.28-34.29" */
  wire \counter[2]_DFF_Q_D ;
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:38.25-38.27" */
  wire \counter[2]_DFF_Q_D_ALU_SUM_COUT ;
  /* src = "top.v:5.13-5.20" */
  wire \counter[3] ;
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:34.28-34.29" */
  wire \counter[3]_DFF_Q_D ;
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:38.25-38.27" */
  wire \counter[3]_DFF_Q_D_ALU_SUM_COUT ;
  /* src = "top.v:5.13-5.20" */
  wire \counter[4] ;
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:34.28-34.29" */
  wire \counter[4]_DFF_Q_D ;
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:38.25-38.27" */
  wire \counter[4]_DFF_Q_D_ALU_SUM_COUT ;
  /* src = "top.v:5.13-5.20" */
  wire \counter[5] ;
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:34.28-34.29" */
  wire \counter[5]_DFF_Q_D ;
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:38.25-38.27" */
  wire \counter[5]_DFF_Q_D_ALU_SUM_COUT ;
  /* src = "top.v:5.13-5.20" */
  wire \counter[6] ;
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:34.28-34.29" */
  wire \counter[6]_DFF_Q_D ;
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:38.25-38.27" */
  wire \counter[6]_DFF_Q_D_ALU_SUM_COUT ;
  /* src = "top.v:5.13-5.20" */
  wire \counter[7] ;
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:34.28-34.29" */
  wire \counter[7]_DFF_Q_D ;
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:38.25-38.27" */
  wire \counter[7]_DFF_Q_D_ALU_SUM_COUT ;
  /* src = "top.v:5.13-5.20" */
  wire \counter[8] ;
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:34.28-34.29" */
  wire \counter[8]_DFF_Q_D ;
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:38.25-38.27" */
  /* unused_bits = "0" */
  wire \counter[8]_DFF_Q_D_ALU_SUM_COUT ;
  /* src = "top.v:3.10-3.13" */
  output led;
  wire led_OBUF_O_I;
  /* force_downto = 1 */
  /* src = "/usr/bin/../share/yosys/gowin/cells_map.v:131.20-131.21" */
  wire [3:0] led_OBUF_O_I_LUT4_F_I2;
  /* keep = 1 */
  IBUF clk24_IBUF_I (
    .I(clk24),
    .O(clk24_IBUF_I_O)
  );
  /* module_not_derived = 1 */
  /* src = "top.v:7.3-9.6|/usr/bin/../share/yosys/gowin/cells_map.v:13.6-13.47" */
  DFF \counter[0]_DFF_Q  (
    .CLK(clk24_IBUF_I_O),
    .D(\counter[0]_DFF_Q_D ),
    .Q(\counter[0] )
  );
  /* module_not_derived = 1 */
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:57.7-63.5" */
  ALU \counter[0]_DFF_Q_D_ALU_SUM  (
    .CIN(\counter[1]_DFF_Q_D_ALU_SUM_I0 ),
    .COUT(\counter[0]_DFF_Q_D_ALU_SUM_COUT ),
    .I0(\counter[0]_DFF_Q_D_ALU_SUM_I0 ),
    .I1(\counter[0] ),
    .I3(\counter[0]_DFF_Q_D_ALU_SUM_I0 ),
    .SUM(\counter[0]_DFF_Q_D )
  );
  defparam \counter[0]_DFF_Q_D_ALU_SUM .ALU_MODE = 2;
  VCC \counter[0]_DFF_Q_D_ALU_SUM_I0_VCC_V  (
    .V(\counter[0]_DFF_Q_D_ALU_SUM_I0 )
  );
  /* module_not_derived = 1 */
  /* src = "top.v:7.3-9.6|/usr/bin/../share/yosys/gowin/cells_map.v:13.6-13.47" */
  DFF \counter[1]_DFF_Q  (
    .CLK(clk24_IBUF_I_O),
    .D(\counter[1]_DFF_Q_D ),
    .Q(\counter[1] )
  );
  /* module_not_derived = 1 */
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:57.7-63.5" */
  ALU \counter[1]_DFF_Q_D_ALU_SUM  (
    .CIN(\counter[0]_DFF_Q_D_ALU_SUM_COUT ),
    .COUT(\counter[1]_DFF_Q_D_ALU_SUM_COUT ),
    .I0(\counter[1]_DFF_Q_D_ALU_SUM_I0 ),
    .I1(\counter[1] ),
    .I3(\counter[0]_DFF_Q_D_ALU_SUM_I0 ),
    .SUM(\counter[1]_DFF_Q_D )
  );
  defparam \counter[1]_DFF_Q_D_ALU_SUM .ALU_MODE = 2;
  GND \counter[1]_DFF_Q_D_ALU_SUM_I0_GND_G  (
    .G(\counter[1]_DFF_Q_D_ALU_SUM_I0 )
  );
  /* module_not_derived = 1 */
  /* src = "top.v:7.3-9.6|/usr/bin/../share/yosys/gowin/cells_map.v:13.6-13.47" */
  DFF \counter[2]_DFF_Q  (
    .CLK(clk24_IBUF_I_O),
    .D(\counter[2]_DFF_Q_D ),
    .Q(\counter[2] )
  );
  /* module_not_derived = 1 */
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:57.7-63.5" */
  ALU \counter[2]_DFF_Q_D_ALU_SUM  (
    .CIN(\counter[1]_DFF_Q_D_ALU_SUM_COUT ),
    .COUT(\counter[2]_DFF_Q_D_ALU_SUM_COUT ),
    .I0(\counter[1]_DFF_Q_D_ALU_SUM_I0 ),
    .I1(\counter[2] ),
    .I3(\counter[0]_DFF_Q_D_ALU_SUM_I0 ),
    .SUM(\counter[2]_DFF_Q_D )
  );
  defparam \counter[2]_DFF_Q_D_ALU_SUM .ALU_MODE = 2;
  /* module_not_derived = 1 */
  /* src = "/usr/bin/../share/yosys/gowin/cells_map.v:148.23-149.48" */
  LUT4 \counter[2]_LUT4_I0  (
    .F(led_OBUF_O_I_LUT4_F_I2[3]),
    .I0(\counter[2] ),
    .I1(\counter[3] ),
    .I2(\counter[4] ),
    .I3(\counter[5] )
  );
  defparam \counter[2]_LUT4_I0 .INIT = 16'h0001;
  /* module_not_derived = 1 */
  /* src = "top.v:7.3-9.6|/usr/bin/../share/yosys/gowin/cells_map.v:13.6-13.47" */
  DFF \counter[3]_DFF_Q  (
    .CLK(clk24_IBUF_I_O),
    .D(\counter[3]_DFF_Q_D ),
    .Q(\counter[3] )
  );
  /* module_not_derived = 1 */
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:57.7-63.5" */
  ALU \counter[3]_DFF_Q_D_ALU_SUM  (
    .CIN(\counter[2]_DFF_Q_D_ALU_SUM_COUT ),
    .COUT(\counter[3]_DFF_Q_D_ALU_SUM_COUT ),
    .I0(\counter[1]_DFF_Q_D_ALU_SUM_I0 ),
    .I1(\counter[3] ),
    .I3(\counter[0]_DFF_Q_D_ALU_SUM_I0 ),
    .SUM(\counter[3]_DFF_Q_D )
  );
  defparam \counter[3]_DFF_Q_D_ALU_SUM .ALU_MODE = 2;
  /* module_not_derived = 1 */
  /* src = "top.v:7.3-9.6|/usr/bin/../share/yosys/gowin/cells_map.v:13.6-13.47" */
  DFF \counter[4]_DFF_Q  (
    .CLK(clk24_IBUF_I_O),
    .D(\counter[4]_DFF_Q_D ),
    .Q(\counter[4] )
  );
  /* module_not_derived = 1 */
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:57.7-63.5" */
  ALU \counter[4]_DFF_Q_D_ALU_SUM  (
    .CIN(\counter[3]_DFF_Q_D_ALU_SUM_COUT ),
    .COUT(\counter[4]_DFF_Q_D_ALU_SUM_COUT ),
    .I0(\counter[1]_DFF_Q_D_ALU_SUM_I0 ),
    .I1(\counter[4] ),
    .I3(\counter[0]_DFF_Q_D_ALU_SUM_I0 ),
    .SUM(\counter[4]_DFF_Q_D )
  );
  defparam \counter[4]_DFF_Q_D_ALU_SUM .ALU_MODE = 2;
  /* module_not_derived = 1 */
  /* src = "top.v:7.3-9.6|/usr/bin/../share/yosys/gowin/cells_map.v:13.6-13.47" */
  DFF \counter[5]_DFF_Q  (
    .CLK(clk24_IBUF_I_O),
    .D(\counter[5]_DFF_Q_D ),
    .Q(\counter[5] )
  );
  /* module_not_derived = 1 */
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:57.7-63.5" */
  ALU \counter[5]_DFF_Q_D_ALU_SUM  (
    .CIN(\counter[4]_DFF_Q_D_ALU_SUM_COUT ),
    .COUT(\counter[5]_DFF_Q_D_ALU_SUM_COUT ),
    .I0(\counter[1]_DFF_Q_D_ALU_SUM_I0 ),
    .I1(\counter[5] ),
    .I3(\counter[0]_DFF_Q_D_ALU_SUM_I0 ),
    .SUM(\counter[5]_DFF_Q_D )
  );
  defparam \counter[5]_DFF_Q_D_ALU_SUM .ALU_MODE = 2;
  /* module_not_derived = 1 */
  /* src = "top.v:7.3-9.6|/usr/bin/../share/yosys/gowin/cells_map.v:13.6-13.47" */
  DFF \counter[6]_DFF_Q  (
    .CLK(clk24_IBUF_I_O),
    .D(\counter[6]_DFF_Q_D ),
    .Q(\counter[6] )
  );
  /* module_not_derived = 1 */
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:57.7-63.5" */
  ALU \counter[6]_DFF_Q_D_ALU_SUM  (
    .CIN(\counter[5]_DFF_Q_D_ALU_SUM_COUT ),
    .COUT(\counter[6]_DFF_Q_D_ALU_SUM_COUT ),
    .I0(\counter[1]_DFF_Q_D_ALU_SUM_I0 ),
    .I1(\counter[6] ),
    .I3(\counter[0]_DFF_Q_D_ALU_SUM_I0 ),
    .SUM(\counter[6]_DFF_Q_D )
  );
  defparam \counter[6]_DFF_Q_D_ALU_SUM .ALU_MODE = 2;
  /* module_not_derived = 1 */
  /* src = "/usr/bin/../share/yosys/gowin/cells_map.v:144.23-145.37" */
  LUT3 \counter[6]_LUT3_I0  (
    .F(led_OBUF_O_I_LUT4_F_I2[2]),
    .I0(\counter[6] ),
    .I1(\counter[7] ),
    .I2(\counter[8] )
  );
  defparam \counter[6]_LUT3_I0 .INIT = 8'h01;
  /* module_not_derived = 1 */
  /* src = "top.v:7.3-9.6|/usr/bin/../share/yosys/gowin/cells_map.v:13.6-13.47" */
  DFF \counter[7]_DFF_Q  (
    .CLK(clk24_IBUF_I_O),
    .D(\counter[7]_DFF_Q_D ),
    .Q(\counter[7] )
  );
  /* module_not_derived = 1 */
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:57.7-63.5" */
  ALU \counter[7]_DFF_Q_D_ALU_SUM  (
    .CIN(\counter[6]_DFF_Q_D_ALU_SUM_COUT ),
    .COUT(\counter[7]_DFF_Q_D_ALU_SUM_COUT ),
    .I0(\counter[1]_DFF_Q_D_ALU_SUM_I0 ),
    .I1(\counter[7] ),
    .I3(\counter[0]_DFF_Q_D_ALU_SUM_I0 ),
    .SUM(\counter[7]_DFF_Q_D )
  );
  defparam \counter[7]_DFF_Q_D_ALU_SUM .ALU_MODE = 2;
  /* module_not_derived = 1 */
  /* src = "top.v:7.3-9.6|/usr/bin/../share/yosys/gowin/cells_map.v:13.6-13.47" */
  DFF \counter[8]_DFF_Q  (
    .CLK(clk24_IBUF_I_O),
    .D(\counter[8]_DFF_Q_D ),
    .Q(\counter[8] )
  );
  /* module_not_derived = 1 */
  /* src = "top.v:8.16-8.27|/usr/bin/../share/yosys/gowin/arith_map.v:57.7-63.5" */
  ALU \counter[8]_DFF_Q_D_ALU_SUM  (
    .CIN(\counter[7]_DFF_Q_D_ALU_SUM_COUT ),
    .COUT(\counter[8]_DFF_Q_D_ALU_SUM_COUT ),
    .I0(\counter[1]_DFF_Q_D_ALU_SUM_I0 ),
    .I1(\counter[8] ),
    .I3(\counter[0]_DFF_Q_D_ALU_SUM_I0 ),
    .SUM(\counter[8]_DFF_Q_D )
  );
  defparam \counter[8]_DFF_Q_D_ALU_SUM .ALU_MODE = 2;
  /* keep = 1 */
  OBUF led_OBUF_O (
    .I(led_OBUF_O_I),
    .O(led)
  );
  /* module_not_derived = 1 */
  /* src = "/usr/bin/../share/yosys/gowin/cells_map.v:148.23-149.48" */
  LUT4 led_OBUF_O_I_LUT4_F (
    .F(led_OBUF_O_I),
    .I0(\counter[0] ),
    .I1(\counter[1] ),
    .I2(led_OBUF_O_I_LUT4_F_I2[2]),
    .I3(led_OBUF_O_I_LUT4_F_I2[3])
  );
  defparam led_OBUF_O_I_LUT4_F.INIT = 16'h1000;
  assign led_OBUF_O_I_LUT4_F_I2[1:0] = { \counter[1] , \counter[0]  };
endmodule