/*
 *  yosys -- Yosys Open SYnthesis Suite
 *
 *  Copyright (C) 2021  Cologne Chip AG <support@colognechip.com>
 *
 *  Permission to use, copy, modify, and/or distribute this software for any
 *  purpose with or without fee is hereby granted, provided that the above
 *  copyright notice and this permission notice appear in all copies.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 */

`timescale 1ps/1ps

module CC_IBUF #(
	parameter PIN_NAME = "UNPLACED",
	parameter V_IO = "UNDEFINED",
	parameter [0:0] PULLUP = 1'bx,
	parameter [0:0] PULLDOWN = 1'bx,
	parameter [0:0] KEEPER = 1'bx,
	parameter [0:0] SCHMITT_TRIGGER = 1'bx,
	// IOSEL
	parameter [3:0] DELAY_IBF = 1'bx,
	parameter [0:0] FF_IBF = 1'bx
)(
	(* iopad_external_pin *)
	input  I,
	output Y
);
	assign Y = I;

endmodule


module CC_OBUF #(
	parameter PIN_NAME = "UNPLACED",
	parameter V_IO = "UNDEFINED",
	parameter DRIVE = "UNDEFINED",
	parameter SLEW = "UNDEFINED",
	// IOSEL
	parameter [3:0] DELAY_OBF = 1'bx,
	parameter [0:0] FF_OBF = 1'bx
)(
	input  A,
	(* iopad_external_pin *)
	output O
);
	assign O = A;

endmodule


module CC_TOBUF #(
	parameter PIN_NAME = "UNPLACED",
	parameter V_IO = "UNDEFINED",
	parameter DRIVE = "UNDEFINED",
	parameter SLEW = "UNDEFINED",
	parameter [0:0] PULLUP = 1'bx,
	parameter [0:0] PULLDOWN = 1'bx,
	parameter [0:0] KEEPER = 1'bx,
	// IOSEL
	parameter [3:0] DELAY_OBF = 1'bx,
	parameter [0:0] FF_OBF = 1'bx
)(
	input  A, T,
	(* iopad_external_pin *)
	output O
);
	assign O = T ? 1'bz : A;

endmodule


module CC_IOBUF #(
	parameter PIN_NAME = "UNPLACED",
	parameter V_IO = "UNDEFINED",
	parameter DRIVE = "UNDEFINED",
	parameter SLEW = "UNDEFINED",
	parameter [0:0] PULLUP = 1'bx,
	parameter [0:0] PULLDOWN = 1'bx,
	parameter [0:0] KEEPER = 1'bx,
	parameter [0:0] SCHMITT_TRIGGER = 1'bx,
	// IOSEL
	parameter [3:0] DELAY_IBF = 1'bx,
	parameter [3:0] DELAY_OBF = 1'bx,
	parameter [0:0] FF_IBF = 1'bx,
	parameter [0:0] FF_OBF = 1'bx
)(
	input  A, T,
	output Y,
	(* iopad_external_pin *)
	inout  IO
);
	assign IO = T ? 1'bz : A;
	assign Y = IO;

endmodule


module CC_LVDS_IBUF #(
	parameter PIN_NAME_P = "UNPLACED",
	parameter PIN_NAME_N = "UNPLACED",
	parameter V_IO = "UNDEFINED",
	parameter [0:0] LVDS_RTERM = 1'bx,
	// IOSEL
	parameter [3:0] DELAY_IBF = 1'bx,
	parameter [0:0] FF_IBF = 1'bx
)(
	(* iopad_external_pin *)
	input  IP, IN,
	output Y
);
	assign Y = IP;

endmodule


module CC_LVDS_OBUF #(
	parameter PIN_NAME_P = "UNPLACED",
	parameter PIN_NAME_N = "UNPLACED",
	parameter V_IO = "UNDEFINED",
	parameter [0:0] LVDS_BOOST = 1'bx,
	// IOSEL
	parameter [3:0] DELAY_OBF = 1'bx,
	parameter [0:0] FF_OBF = 1'bx
)(
	input  A,
	(* iopad_external_pin *)
	output OP, ON
);
	assign OP = A;
	assign ON = ~A;

endmodule


module CC_LVDS_TOBUF #(
	parameter PIN_NAME_P = "UNPLACED",
	parameter PIN_NAME_N = "UNPLACED",
	parameter V_IO = "UNDEFINED",
	parameter [0:0] LVDS_BOOST = 1'bx,
	// IOSEL
	parameter [3:0] DELAY_OBF = 1'bx,
	parameter [0:0] FF_OBF = 1'bx
)(
	input  A, T,
	(* iopad_external_pin *)
	output OP, ON
);
	assign OP = T ? 1'bz :  A;
	assign ON = T ? 1'bz : ~A;

endmodule


module CC_LVDS_IOBUF #(
	parameter PIN_NAME_P = "UNPLACED",
	parameter PIN_NAME_N = "UNPLACED",
	parameter V_IO = "UNDEFINED",
	parameter [0:0] LVDS_RTERM = 1'bx,
	parameter [0:0] LVDS_BOOST = 1'bx,
	// IOSEL
	parameter [3:0] DELAY_IBF = 1'bx,
	parameter [3:0] DELAY_OBF = 1'bx,
	parameter [0:0] FF_IBF = 1'bx,
	parameter [0:0] FF_OBF = 1'bx
)(
	input  A, T,
	(* iopad_external_pin *)
	inout  IOP, ION,
	output Y
);
	assign IOP = T ? 1'bz :  A;
	assign ION = T ? 1'bz : ~A;
	assign Y = IOP;

endmodule


module CC_IDDR #(
	parameter [0:0] CLK_INV = 1'b0
)(
	input D,
	(* clkbuf_sink *)
	input CLK,
	output reg Q0, Q1
);
	wire clk;
	assign clk = (CLK_INV) ? ~CLK : CLK;

	always @(posedge clk)
	begin
		Q0 <= D;
	end

	always @(negedge clk)
	begin
		Q1 <= D;
	end

endmodule


module CC_ODDR #(
	parameter [0:0] CLK_INV = 1'b0
)(
	input D0,
	input D1,
	(* clkbuf_sink *)
	input CLK,
	(* clkbuf_sink *)
	input DDR,
	output Q
);
	wire clk;
	assign clk = (CLK_INV) ? ~CLK : CLK;

	reg q0, q1;
	assign Q = (DDR) ? q0 : q1;

	always @(posedge clk)
	begin
		q0 <= D0;
	end

	always @(negedge clk)
	begin
		q1 <= D1;
	end

endmodule


module CC_DFF #(
	parameter [0:0] CLK_INV = 1'b0,
	parameter [0:0] EN_INV  = 1'b0,
	parameter [0:0] SR_INV  = 1'b0,
	parameter [0:0] SR_VAL  = 1'b0
)(
	input D,
	(* clkbuf_sink *)
	input CLK,
	input EN,
	input SR,
	output reg Q
);
	wire clk, en, sr;
	assign clk = (CLK_INV) ? ~CLK : CLK;
	assign en  = (EN_INV)  ?  ~EN :  EN;
	assign sr  = (SR_INV)  ?  ~SR :  SR;

	initial Q = 1'bX;

	always @(posedge clk or posedge sr)
	begin
		if (sr) begin
			Q <= SR_VAL;
		end
		else if (en) begin
			Q <= D;
		end
	end

endmodule


module CC_DLT #(
	parameter [0:0] G_INV = 1'b0,
	parameter [0:0] SR_INV = 1'b0,
	parameter [0:0] SR_VAL = 1'b0
)(
	input D,
	input G,
	input SR,
	output reg Q
);
	wire en, sr;
	assign en  = (G_INV) ? ~G : G;
	assign sr  = (SR_INV) ? ~SR : SR;

	initial Q = 1'bX;

	always @(*)
	begin
		if (sr) begin
			Q <= SR_VAL;
		end
		else if (en) begin
			Q <= D;
		end
	end

endmodule


module CC_LUT1 (
	output O,
	input  I0
);
	parameter [1:0] INIT = 0;

	assign O = I0 ? INIT[1] : INIT[0];

endmodule


module CC_LUT2 (
	output O,
	input  I0, I1
);
	parameter [3:0] INIT = 0;

	wire [1:0] s1 = I1 ? INIT[3:2] : INIT[1:0];
	assign O = I0 ? s1[1] : s1[0];

endmodule


module CC_LUT3 (
	output O,
	input  I0, I1, I2
);
	parameter [7:0] INIT = 0;

	wire [3:0] s2 = I2 ? INIT[7:4] : INIT[3:0];
	wire [1:0] s1 = I1 ? s2[3:2] : s2[1:0];
	assign O = I0 ? s1[1] : s1[0];

endmodule


module CC_LUT4 (
	output O,
	input  I0, I1, I2, I3
);
	parameter [15:0] INIT = 0;

	wire [7:0] s3 = I3 ? INIT[15:8] : INIT[7:0];
	wire [3:0] s2 = I2 ? s3[7:4] : s3[3:0];
	wire [1:0] s1 = I1 ? s2[3:2] : s2[1:0];
	assign O = I0 ? s1[1] : s1[0];

endmodule


module CC_MX2 (
	input  D0, D1,
	input  S0,
	output Y
);
	assign Y = S0 ? D1 : D0;

endmodule


module CC_MX4 (
	input  D0, D1, D2, D3,
	input  S0, S1,
	output Y
);
	assign Y = S1 ? (S0 ? D3 : D2) :
					(S0 ? D1 : D0);

endmodule


module CC_MX8 (
	input  D0, D1, D2, D3,
	input  D4, D5, D6, D7,
	input  S0, S1, S2,
	output Y
);
	assign Y = S2 ? (S1 ? (S0 ? D7 : D6) :
						  (S0 ? D5 : D4)) :
					(S1 ? (S0 ? D3 : D2) :
						  (S0 ? D1 : D0));

endmodule


module CC_ADDF (
	input  A, B, CI,
	output CO, S
);
	assign {CO, S} = A + B + CI;

endmodule


module CC_MULT #(
	parameter A_WIDTH = 0,
	parameter B_WIDTH = 0,
	parameter P_WIDTH = 0
)(
	input signed [A_WIDTH-1:0] A,
	input signed [B_WIDTH-1:0] B,
	output reg signed [P_WIDTH-1:0] P
);
	always @(*)
	begin
		P <= A * B;
	end
endmodule


module CC_BUFG (
	input  I,
	(* clkbuf_driver *)
	output O
);
	assign O = I;

endmodule


module CC_BRAM_20K (
	output [19:0] A_DO,
	output [19:0] B_DO,
	output ECC_1B_ERR,
	output ECC_2B_ERR,
	(* clkbuf_sink *)
	input A_CLK,
	(* clkbuf_sink *)
	input B_CLK,
	input A_EN,
	input B_EN,
	input A_WE,
	input B_WE,
	input [15:0] A_ADDR,
	input [15:0] B_ADDR,
	input [19:0] A_DI,
	input [19:0] B_DI,
	input [19:0] A_BM,
	input [19:0] B_BM
);
	// Location format: D(0..N-1)(0..N-1)X(0..3)Y(0..7)Z(0..1) or UNPLACED
	parameter LOC = "UNPLACED";

	// Port Widths
	parameter A_RD_WIDTH = 0;
	parameter B_RD_WIDTH = 0;
	parameter A_WR_WIDTH = 0;
	parameter B_WR_WIDTH = 0;

	// RAM and Write Modes
	parameter RAM_MODE = "SDP";
	parameter A_WR_MODE = "NO_CHANGE";
	parameter B_WR_MODE = "NO_CHANGE";

	// Inverting Control Pins
	parameter A_CLK_INV = 1'b0;
	parameter B_CLK_INV = 1'b0;
	parameter A_EN_INV = 1'b0;
	parameter B_EN_INV = 1'b0;
	parameter A_WE_INV = 1'b0;
	parameter B_WE_INV = 1'b0;

	// Output Register
	parameter A_DO_REG = 1'b0;
	parameter B_DO_REG = 1'b0;

	// Error Checking and Correction
	parameter ECC_EN = 1'b0;

	// RAM Contents
	parameter INIT_00 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_01 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_02 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_03 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_04 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_05 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_06 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_07 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_08 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_09 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_0A = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_0B = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_0C = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_0D = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_0E = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_0F = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_10 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_11 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_12 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_13 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_14 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_15 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_16 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_17 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_18 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_19 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_1A = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_1B = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_1C = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_1D = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_1E = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_1F = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_20 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_21 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_22 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_23 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_24 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_25 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_26 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_27 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_28 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_29 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_2A = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_2B = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_2C = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_2D = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_2E = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_2F = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_30 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_31 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_32 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_33 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_34 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_35 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_36 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_37 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_38 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_39 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_3A = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_3B = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_3C = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_3D = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_3E = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_3F = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;

	localparam WIDTH_MODE_A = (A_RD_WIDTH > A_WR_WIDTH) ? A_RD_WIDTH : A_WR_WIDTH;
	localparam WIDTH_MODE_B = (B_RD_WIDTH > B_WR_WIDTH) ? B_RD_WIDTH : B_WR_WIDTH;

	integer i, k;

	// 512 x 40 bit
	reg [20479:0] memory = 20480'b0;

	initial begin
		// Check parameters
		if ((RAM_MODE != "SDP") && (RAM_MODE != "TDP")) begin
			$display("ERROR: Illegal RAM MODE %d.", RAM_MODE);
			$finish();
		end
		if ((A_WR_MODE != "WRITE_THROUGH") && (A_WR_MODE != "NO_CHANGE")) begin
			$display("ERROR: Illegal RAM MODE %d.", RAM_MODE);
			$finish();
		end
		if ((RAM_MODE == "SDP") && (A_WR_MODE == "WRITE_THROUGH")) begin
			$display("ERROR: %s is not supported in %s mode.", A_WR_MODE, RAM_MODE);
			$finish();
		end
		if (ECC_EN != 1'b0) begin
			$display("WARNING: ECC feature not supported in simulation.");
		end
		if ((ECC_EN == 1'b1) && (RAM_MODE != "SDP") && (WIDTH_MODE_A != 40)) begin
			$display("ERROR: Illegal ECC Port configuration. Must be SDP 40 bit, but is %s %d.", RAM_MODE, WIDTH_MODE_A);
			$finish();
		end
		if ((WIDTH_MODE_A == 40) && (RAM_MODE == "TDP")) begin
			$display("ERROR: Port A width of 40 bits is only supported in SDP mode.");
			$finish();
		end
		if ((WIDTH_MODE_B == 40) && (RAM_MODE == "TDP")) begin
			$display("ERROR: Port B width of 40 bits is only supported in SDP mode.");
			$finish();
		end
		if ((WIDTH_MODE_A != 40) && (WIDTH_MODE_A != 20) && (WIDTH_MODE_A != 10) &&
			(WIDTH_MODE_A != 5)  && (WIDTH_MODE_A != 2)  && (WIDTH_MODE_A != 1) && (WIDTH_MODE_A != 0)) begin
			$display("ERROR: Illegal %s Port A width configuration %d.", RAM_MODE, WIDTH_MODE_A);
			$finish();
		end
		if ((WIDTH_MODE_B != 40) && (WIDTH_MODE_B != 20) && (WIDTH_MODE_B != 10) &&
			(WIDTH_MODE_B != 5)  && (WIDTH_MODE_B != 2)  && (WIDTH_MODE_B != 1) && (WIDTH_MODE_B != 0)) begin
			$display("ERROR: Illegal %s Port B width configuration %d.", RAM_MODE, WIDTH_MODE_B);
			$finish();
		end
		// RAM initialization
		memory[320*0+319:320*0]   = INIT_00;
		memory[320*1+319:320*1]   = INIT_01;
		memory[320*2+319:320*2]   = INIT_02;
		memory[320*3+319:320*3]   = INIT_03;
		memory[320*4+319:320*4]   = INIT_04;
		memory[320*5+319:320*5]   = INIT_05;
		memory[320*6+319:320*6]   = INIT_06;
		memory[320*7+319:320*7]   = INIT_07;
		memory[320*8+319:320*8]   = INIT_08;
		memory[320*9+319:320*9]   = INIT_09;
		memory[320*10+319:320*10] = INIT_0A;
		memory[320*11+319:320*11] = INIT_0B;
		memory[320*12+319:320*12] = INIT_0C;
		memory[320*13+319:320*13] = INIT_0D;
		memory[320*14+319:320*14] = INIT_0E;
		memory[320*15+319:320*15] = INIT_0F;
		memory[320*16+319:320*16] = INIT_10;
		memory[320*17+319:320*17] = INIT_11;
		memory[320*18+319:320*18] = INIT_12;
		memory[320*19+319:320*19] = INIT_13;
		memory[320*20+319:320*20] = INIT_14;
		memory[320*21+319:320*21] = INIT_15;
		memory[320*22+319:320*22] = INIT_16;
		memory[320*23+319:320*23] = INIT_17;
		memory[320*24+319:320*24] = INIT_18;
		memory[320*25+319:320*25] = INIT_19;
		memory[320*26+319:320*26] = INIT_1A;
		memory[320*27+319:320*27] = INIT_1B;
		memory[320*28+319:320*28] = INIT_1C;
		memory[320*29+319:320*29] = INIT_1D;
		memory[320*30+319:320*30] = INIT_1E;
		memory[320*31+319:320*31] = INIT_1F;
		memory[320*32+319:320*32] = INIT_20;
		memory[320*33+319:320*33] = INIT_21;
		memory[320*34+319:320*34] = INIT_22;
		memory[320*35+319:320*35] = INIT_23;
		memory[320*36+319:320*36] = INIT_24;
		memory[320*37+319:320*37] = INIT_25;
		memory[320*38+319:320*38] = INIT_26;
		memory[320*39+319:320*39] = INIT_27;
		memory[320*40+319:320*40] = INIT_28;
		memory[320*41+319:320*41] = INIT_29;
		memory[320*42+319:320*42] = INIT_2A;
		memory[320*43+319:320*43] = INIT_2B;
		memory[320*44+319:320*44] = INIT_2C;
		memory[320*45+319:320*45] = INIT_2D;
		memory[320*46+319:320*46] = INIT_2E;
		memory[320*47+319:320*47] = INIT_2F;
		memory[320*48+319:320*48] = INIT_30;
		memory[320*49+319:320*49] = INIT_31;
		memory[320*50+319:320*50] = INIT_32;
		memory[320*51+319:320*51] = INIT_33;
		memory[320*52+319:320*52] = INIT_34;
		memory[320*53+319:320*53] = INIT_35;
		memory[320*54+319:320*54] = INIT_36;
		memory[320*55+319:320*55] = INIT_37;
		memory[320*56+319:320*56] = INIT_38;
		memory[320*57+319:320*57] = INIT_39;
		memory[320*58+319:320*58] = INIT_3A;
		memory[320*59+319:320*59] = INIT_3B;
		memory[320*60+319:320*60] = INIT_3C;
		memory[320*61+319:320*61] = INIT_3D;
		memory[320*62+319:320*62] = INIT_3E;
		memory[320*63+319:320*63] = INIT_3F;
	end

	// Signal inversion
	wire clka = A_CLK_INV ^ A_CLK;
	wire clkb = B_CLK_INV ^ B_CLK;
	wire ena  = A_EN_INV ^ A_EN;
	wire enb  = B_EN_INV ^ B_EN;
	wire wea  = A_WE_INV ^ A_WE;
	wire web  = B_WE_INV ^ B_WE;

	// Internal signals
	wire [15:0] addra;
	wire [15:0] addrb;
	reg  [19:0] A_DO_out = 0, A_DO_reg = 0;
	reg  [19:0] B_DO_out = 0, B_DO_reg = 0;

	generate
		if (RAM_MODE == "SDP") begin
			// Port A (write)
			if (A_WR_WIDTH == 40) begin
				assign addra = A_ADDR[15:7]*40;
			end
			// Port B (read)
			if (B_RD_WIDTH == 40) begin
				assign addrb = B_ADDR[15:7]*40;
			end
		end
		else if (RAM_MODE == "TDP") begin
			// Port A
			if (WIDTH_MODE_A <= 1) begin
				wire [15:0] tmpa = {2'b0, A_ADDR[15:7], A_ADDR[5:1]};
				assign addra = tmpa + (tmpa/4);
			end
			else if (WIDTH_MODE_A <= 2) begin
				wire [15:0] tmpa = {3'b0, A_ADDR[15:7], A_ADDR[5:2]};
				assign addra = tmpa*2 + (tmpa/2);
			end
			else if (WIDTH_MODE_A <= 5) begin
				assign addra = {4'b0, A_ADDR[15:7], A_ADDR[5:3]}*5;
			end
			else if (WIDTH_MODE_A <= 10) begin
				assign addra = {5'b0, A_ADDR[15:7], A_ADDR[5:4]}*10;
			end
			else if (WIDTH_MODE_A <= 20) begin
				assign addra = {6'b0, A_ADDR[15:7], A_ADDR[5]}*20;
			end
			// Port B
			if (WIDTH_MODE_B <= 1) begin
				wire [15:0] tmpb = {2'b0, B_ADDR[15:7], B_ADDR[5:1]};
				assign addrb = tmpb + (tmpb/4);
			end
			else if (WIDTH_MODE_B <= 2) begin
				wire [15:0] tmpb = {3'b0, B_ADDR[15:7], B_ADDR[5:2]};
				assign addrb = tmpb*2 + (tmpb/2);
			end
			else if (WIDTH_MODE_B <= 5) begin
				assign addrb = {4'b0, B_ADDR[15:7], B_ADDR[5:3]}*5;
			end
			else if (WIDTH_MODE_B <= 10) begin
				assign addrb = {5'b0, B_ADDR[15:7], B_ADDR[5:4]}*10;
			end
			else if (WIDTH_MODE_B <= 20) begin
				assign addrb = {6'b0, B_ADDR[15:7], B_ADDR[5]}*20;
			end
		end
	endgenerate

	generate
		if (RAM_MODE == "SDP") begin
			// SDP write port
			always @(posedge clka)
			begin
				for (k=0; k < A_WR_WIDTH; k=k+1) begin
					if (k < 20) begin
						if (ena && wea && A_BM[k]) memory[addra+k] <= A_DI[k];
					end
					else begin // use both ports
						if (ena && wea && B_BM[k-20]) memory[addra+k] <= B_DI[k-20];
					end
				end
			end
			// SDP read port
			always @(posedge clkb)
			begin
				// "NO_CHANGE" only
				for (k=0; k < B_RD_WIDTH; k=k+1) begin
					if (k < 20) begin
						if (enb && !wea) A_DO_out[k] <= memory[addrb+k];
					end
					else begin // use both ports
						if (enb && !wea) B_DO_out[k-20] <= memory[addrb+k];
					end
				end
			end
		end
		else if (RAM_MODE == "TDP") begin
			// TDP port A
			always @(posedge clka)
			begin
				for (i=0; i < WIDTH_MODE_A; i=i+1) begin
					if (ena && wea && A_BM[i]) memory[addra+i] <= A_DI[i];

					if (A_WR_MODE == "NO_CHANGE") begin
						if (ena && !wea) A_DO_out[i] <= memory[addra+i];
					end
					else if (A_WR_MODE == "WRITE_THROUGH") begin
						if (ena) begin
							if (wea && A_BM[i]) begin
								A_DO_out[i] <= A_DI[i];
							end
							else begin
								A_DO_out[i] <= memory[addra+i];
							end
						end
					end
				end
			end
			// TDP port B
			always @(posedge clkb)
			begin
				for (i=0; i < WIDTH_MODE_B; i=i+1) begin
					if (enb && web && B_BM[i]) memory[addrb+i] <= B_DI[i];

					if (B_WR_MODE == "NO_CHANGE") begin
						if (enb && !web) B_DO_out[i] <= memory[addrb+i];
					end
					else if (B_WR_MODE == "WRITE_THROUGH") begin
						if (enb) begin
							if (web && B_BM[i]) begin
								B_DO_out[i] <= B_DI[i];
							end
							else begin
								B_DO_out[i] <= memory[addrb+i];
							end
						end
					end
				end
			end
		end
	endgenerate

	// Optional output register
	generate
		if (A_DO_REG) begin
			always @(posedge clka) begin
				A_DO_reg <= A_DO_out;
			end
			assign A_DO = A_DO_reg;
		end
		else begin
			assign A_DO = A_DO_out;
		end
		if (B_DO_REG) begin
			always @(posedge clkb) begin
				B_DO_reg <= B_DO_out;
			end
			assign B_DO = B_DO_reg;
		end
		else begin
			assign B_DO = B_DO_out;
		end
	endgenerate
endmodule


module CC_BRAM_40K (
	output [39:0] A_DO,
	output [39:0] B_DO,
	output A_ECC_1B_ERR,
	output B_ECC_1B_ERR,
	output A_ECC_2B_ERR,
	output B_ECC_2B_ERR,
	output reg A_CO = 0,
	output reg B_CO = 0,
	(* clkbuf_sink *)
	input A_CLK,
	(* clkbuf_sink *)
	input B_CLK,
	input A_EN,
	input B_EN,
	input A_WE,
	input B_WE,
	input [15:0] A_ADDR,
	input [15:0] B_ADDR,
	input [39:0] A_DI,
	input [39:0] B_DI,
	input [39:0] A_BM,
	input [39:0] B_BM,
	input A_CI,
	input B_CI
);
	// Location format: D(0..N-1)X(0..3)Y(0..7) or UNPLACED
	parameter LOC = "UNPLACED";
	parameter CAS = "NONE"; // NONE, UPPER, LOWER

	// Port Widths
	parameter A_RD_WIDTH = 0;
	parameter B_RD_WIDTH = 0;
	parameter A_WR_WIDTH = 0;
	parameter B_WR_WIDTH = 0;

	// RAM and Write Modes
	parameter RAM_MODE = "SDP";
	parameter A_WR_MODE = "NO_CHANGE";
	parameter B_WR_MODE = "NO_CHANGE";

	// Inverting Control Pins
	parameter A_CLK_INV = 1'b0;
	parameter B_CLK_INV = 1'b0;
	parameter A_EN_INV = 1'b0;
	parameter B_EN_INV = 1'b0;
	parameter A_WE_INV = 1'b0;
	parameter B_WE_INV = 1'b0;

	// Output Register
	parameter A_DO_REG = 1'b0;
	parameter B_DO_REG = 1'b0;

	// Error Checking and Correction
	parameter A_ECC_EN  = 1'b0;
	parameter B_ECC_EN  = 1'b0;

	parameter INIT_00 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_01 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_02 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_03 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_04 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_05 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_06 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_07 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_08 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_09 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_0A = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_0B = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_0C = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_0D = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_0E = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_0F = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_10 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_11 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_12 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_13 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_14 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_15 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_16 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_17 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_18 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_19 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_1A = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_1B = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_1C = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_1D = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_1E = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_1F = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_20 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_21 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_22 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_23 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_24 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_25 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_26 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_27 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_28 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_29 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_2A = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_2B = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_2C = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_2D = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_2E = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_2F = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_30 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_31 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_32 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_33 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_34 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_35 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_36 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_37 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_38 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_39 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_3A = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_3B = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_3C = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_3D = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_3E = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_3F = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_40 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_41 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_42 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_43 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_44 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_45 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_46 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_47 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_48 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_49 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_4A = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_4B = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_4C = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_4D = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_4E = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_4F = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_50 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_51 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_52 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_53 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_54 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_55 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_56 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_57 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_58 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_59 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_5A = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_5B = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_5C = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_5D = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_5E = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_5F = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_60 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_61 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_62 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_63 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_64 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_65 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_66 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_67 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_68 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_69 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_6A = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_6B = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_6C = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_6D = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_6E = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_6F = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_70 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_71 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_72 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_73 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_74 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_75 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_76 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_77 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_78 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_79 = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_7A = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_7B = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_7C = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_7D = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_7E = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;
	parameter INIT_7F = 320'h00000000000000000000000000000000000000000000000000000000000000000000000000000000;

	localparam WIDTH_MODE_A = (A_RD_WIDTH > A_WR_WIDTH) ? A_RD_WIDTH : A_WR_WIDTH;
	localparam WIDTH_MODE_B = (B_RD_WIDTH > B_WR_WIDTH) ? B_RD_WIDTH : B_WR_WIDTH;

	integer i, k;

	// 512 x 80 bit
	reg [40959:0] memory = 40960'b0;

	initial begin
		// Check parameters
		if ((RAM_MODE != "SDP") && (RAM_MODE != "TDP")) begin
			$display("ERROR: Illegal RAM MODE %d.", RAM_MODE);
			$finish();
		end
		if ((A_WR_MODE != "WRITE_THROUGH") && (A_WR_MODE != "NO_CHANGE")) begin
			$display("ERROR: Illegal RAM MODE %d.", RAM_MODE);
			$finish();
		end
		if ((RAM_MODE == "SDP") && (A_WR_MODE == "WRITE_THROUGH")) begin
			$display("ERROR: %s is not supported in %s mode.", A_WR_MODE, RAM_MODE);
			$finish();
		end
		if ((A_ECC_EN != 1'b0) || (B_ECC_EN != 1'b0)) begin
			$display("WARNING: ECC feature not supported in simulation.");
		end
		if ((A_ECC_EN == 1'b1) && (RAM_MODE != "SDP") && (WIDTH_MODE_A != 40)) begin
			$display("ERROR: Illegal ECC Port A configuration. Must be SDP 40 bit, but is %s %d.", RAM_MODE, WIDTH_MODE_A);
			$finish();
		end
		if ((WIDTH_MODE_A == 80) && (RAM_MODE == "TDP")) begin
			$display("ERROR: Port A width of 80 bits is only supported in SDP mode.");
			$finish();
		end
		if ((WIDTH_MODE_B == 80) && (RAM_MODE == "TDP")) begin
			$display("ERROR: Port B width of 80 bits is only supported in SDP mode.");
			$finish();
		end
		if ((WIDTH_MODE_A != 80) && (WIDTH_MODE_A != 40) && (WIDTH_MODE_A != 20) && (WIDTH_MODE_A != 10) &&
			(WIDTH_MODE_A != 5)  && (WIDTH_MODE_A != 2)  && (WIDTH_MODE_A != 1) && (WIDTH_MODE_A != 0)) begin
			$display("ERROR: Illegal %s Port A width configuration %d.", RAM_MODE, WIDTH_MODE_A);
			$finish();
		end
		if ((WIDTH_MODE_B != 80) && (WIDTH_MODE_B != 40) && (WIDTH_MODE_B != 20) && (WIDTH_MODE_B != 10) &&
			(WIDTH_MODE_B != 5)  && (WIDTH_MODE_B != 2)  && (WIDTH_MODE_B != 1) && (WIDTH_MODE_B != 0)) begin
			$display("ERROR: Illegal %s Port B width configuration %d.", RAM_MODE, WIDTH_MODE_B);
			$finish();
		end
		if ((CAS != "NONE") && ((WIDTH_MODE_A > 1) || (WIDTH_MODE_B > 1))) begin
			$display("ERROR: Cascade feature only supported in 1 bit data width mode.");
			$finish();
		end
		if ((CAS != "NONE") && (RAM_MODE != "TDP")) begin
			$display("ERROR: Cascade feature only supported in TDP mode.");
			$finish();
		end
		// RAM initialization
		memory[320*0+319:320*0]     = INIT_00;
		memory[320*1+319:320*1]     = INIT_01;
		memory[320*2+319:320*2]     = INIT_02;
		memory[320*3+319:320*3]     = INIT_03;
		memory[320*4+319:320*4]     = INIT_04;
		memory[320*5+319:320*5]     = INIT_05;
		memory[320*6+319:320*6]     = INIT_06;
		memory[320*7+319:320*7]     = INIT_07;
		memory[320*8+319:320*8]     = INIT_08;
		memory[320*9+319:320*9]     = INIT_09;
		memory[320*10+319:320*10]   = INIT_0A;
		memory[320*11+319:320*11]   = INIT_0B;
		memory[320*12+319:320*12]   = INIT_0C;
		memory[320*13+319:320*13]   = INIT_0D;
		memory[320*14+319:320*14]   = INIT_0E;
		memory[320*15+319:320*15]   = INIT_0F;
		memory[320*16+319:320*16]   = INIT_10;
		memory[320*17+319:320*17]   = INIT_11;
		memory[320*18+319:320*18]   = INIT_12;
		memory[320*19+319:320*19]   = INIT_13;
		memory[320*20+319:320*20]   = INIT_14;
		memory[320*21+319:320*21]   = INIT_15;
		memory[320*22+319:320*22]   = INIT_16;
		memory[320*23+319:320*23]   = INIT_17;
		memory[320*24+319:320*24]   = INIT_18;
		memory[320*25+319:320*25]   = INIT_19;
		memory[320*26+319:320*26]   = INIT_1A;
		memory[320*27+319:320*27]   = INIT_1B;
		memory[320*28+319:320*28]   = INIT_1C;
		memory[320*29+319:320*29]   = INIT_1D;
		memory[320*30+319:320*30]   = INIT_1E;
		memory[320*31+319:320*31]   = INIT_1F;
		memory[320*32+319:320*32]   = INIT_20;
		memory[320*33+319:320*33]   = INIT_21;
		memory[320*34+319:320*34]   = INIT_22;
		memory[320*35+319:320*35]   = INIT_23;
		memory[320*36+319:320*36]   = INIT_24;
		memory[320*37+319:320*37]   = INIT_25;
		memory[320*38+319:320*38]   = INIT_26;
		memory[320*39+319:320*39]   = INIT_27;
		memory[320*40+319:320*40]   = INIT_28;
		memory[320*41+319:320*41]   = INIT_29;
		memory[320*42+319:320*42]   = INIT_2A;
		memory[320*43+319:320*43]   = INIT_2B;
		memory[320*44+319:320*44]   = INIT_2C;
		memory[320*45+319:320*45]   = INIT_2D;
		memory[320*46+319:320*46]   = INIT_2E;
		memory[320*47+319:320*47]   = INIT_2F;
		memory[320*48+319:320*48]   = INIT_30;
		memory[320*49+319:320*49]   = INIT_31;
		memory[320*50+319:320*50]   = INIT_32;
		memory[320*51+319:320*51]   = INIT_33;
		memory[320*52+319:320*52]   = INIT_34;
		memory[320*53+319:320*53]   = INIT_35;
		memory[320*54+319:320*54]   = INIT_36;
		memory[320*55+319:320*55]   = INIT_37;
		memory[320*56+319:320*56]   = INIT_38;
		memory[320*57+319:320*57]   = INIT_39;
		memory[320*58+319:320*58]   = INIT_3A;
		memory[320*59+319:320*59]   = INIT_3B;
		memory[320*60+319:320*60]   = INIT_3C;
		memory[320*61+319:320*61]   = INIT_3D;
		memory[320*62+319:320*62]   = INIT_3E;
		memory[320*63+319:320*63]   = INIT_3F;
		memory[320*64+319:320*64]   = INIT_40;
		memory[320*65+319:320*65]   = INIT_41;
		memory[320*66+319:320*66]   = INIT_42;
		memory[320*67+319:320*67]   = INIT_43;
		memory[320*68+319:320*68]   = INIT_44;
		memory[320*69+319:320*69]   = INIT_45;
		memory[320*70+319:320*70]   = INIT_46;
		memory[320*71+319:320*71]   = INIT_47;
		memory[320*72+319:320*72]   = INIT_48;
		memory[320*73+319:320*73]   = INIT_49;
		memory[320*74+319:320*74]   = INIT_4A;
		memory[320*75+319:320*75]   = INIT_4B;
		memory[320*76+319:320*76]   = INIT_4C;
		memory[320*77+319:320*77]   = INIT_4D;
		memory[320*78+319:320*78]   = INIT_4E;
		memory[320*79+319:320*79]   = INIT_4F;
		memory[320*80+319:320*80]   = INIT_50;
		memory[320*81+319:320*81]   = INIT_51;
		memory[320*82+319:320*82]   = INIT_52;
		memory[320*83+319:320*83]   = INIT_53;
		memory[320*84+319:320*84]   = INIT_54;
		memory[320*85+319:320*85]   = INIT_55;
		memory[320*86+319:320*86]   = INIT_56;
		memory[320*87+319:320*87]   = INIT_57;
		memory[320*88+319:320*88]   = INIT_58;
		memory[320*89+319:320*89]   = INIT_59;
		memory[320*90+319:320*90]   = INIT_5A;
		memory[320*91+319:320*91]   = INIT_5B;
		memory[320*92+319:320*92]   = INIT_5C;
		memory[320*93+319:320*93]   = INIT_5D;
		memory[320*94+319:320*94]   = INIT_5E;
		memory[320*95+319:320*95]   = INIT_5F;
		memory[320*96+319:320*96]   = INIT_60;
		memory[320*97+319:320*97]   = INIT_61;
		memory[320*98+319:320*98]   = INIT_62;
		memory[320*99+319:320*99]   = INIT_63;
		memory[320*100+319:320*100] = INIT_64;
		memory[320*101+319:320*101] = INIT_65;
		memory[320*102+319:320*102] = INIT_66;
		memory[320*103+319:320*103] = INIT_67;
		memory[320*104+319:320*104] = INIT_68;
		memory[320*105+319:320*105] = INIT_69;
		memory[320*106+319:320*106] = INIT_6A;
		memory[320*107+319:320*107] = INIT_6B;
		memory[320*108+319:320*108] = INIT_6C;
		memory[320*109+319:320*109] = INIT_6D;
		memory[320*110+319:320*110] = INIT_6E;
		memory[320*111+319:320*111] = INIT_6F;
		memory[320*112+319:320*112] = INIT_70;
		memory[320*113+319:320*113] = INIT_71;
		memory[320*114+319:320*114] = INIT_72;
		memory[320*115+319:320*115] = INIT_73;
		memory[320*116+319:320*116] = INIT_74;
		memory[320*117+319:320*117] = INIT_75;
		memory[320*118+319:320*118] = INIT_76;
		memory[320*119+319:320*119] = INIT_77;
		memory[320*120+319:320*120] = INIT_78;
		memory[320*121+319:320*121] = INIT_79;
		memory[320*122+319:320*122] = INIT_7A;
		memory[320*123+319:320*123] = INIT_7B;
		memory[320*124+319:320*124] = INIT_7C;
		memory[320*125+319:320*125] = INIT_7D;
		memory[320*126+319:320*126] = INIT_7E;
		memory[320*127+319:320*127] = INIT_7F;
	end

	// Signal inversion
	wire clka = A_CLK_INV ^ A_CLK;
	wire clkb = B_CLK_INV ^ B_CLK;
	wire ena  = A_EN_INV ^ A_EN;
	wire enb  = B_EN_INV ^ B_EN;
	wire wea  = A_WE_INV ^ A_WE;
	wire web  = B_WE_INV ^ B_WE;

	// Internal signals
	wire [15:0] addra;
	wire [15:0] addrb;
	reg  [39:0] A_DO_out = 0, A_DO_reg = 0;
	reg  [39:0] B_DO_out = 0, B_DO_reg = 0;

	generate
		if (RAM_MODE == "SDP") begin
			// Port A (write)
			 if (A_WR_WIDTH == 80) begin
				assign addra = A_ADDR[15:7]*80;
			end
			// Port B (read)
			if (B_RD_WIDTH == 80) begin
				assign addrb = B_ADDR[15:7]*80;
			end
		end
		else if (RAM_MODE == "TDP") begin
			// Port A
			if (WIDTH_MODE_A <= 1) begin
				wire [15:0] tmpa = {1'b0, A_ADDR[15:1]};
				assign addra = tmpa + (tmpa/4);
			end
			else if (WIDTH_MODE_A <= 2) begin
				wire [15:0] tmpa = {2'b0, A_ADDR[15:2]};
				assign addra = tmpa*2 + (tmpa/2);
			end
			else if (WIDTH_MODE_A <= 5) begin
				assign addra = {3'b0, A_ADDR[15:3]}*5;
			end
			else if (WIDTH_MODE_A <= 10) begin
				assign addra = {4'b0, A_ADDR[15:4]}*10;
			end
			else if (WIDTH_MODE_A <= 20) begin
				assign addra = {5'b0, A_ADDR[15:5]}*20;
			end
			else if (WIDTH_MODE_A <= 40) begin
				assign addra = {6'b0, A_ADDR[15:6]}*40;
			end
			// Port B
			if (WIDTH_MODE_B <= 1) begin
				wire [15:0] tmpb = {1'b0, B_ADDR[15:1]};
				assign addrb = tmpb + (tmpb/4);
			end
			else if (WIDTH_MODE_B <= 2) begin
				wire [15:0] tmpb = {2'b0, B_ADDR[15:2]};
				assign addrb = tmpb*2 + (tmpb/2);
			end
			else if (WIDTH_MODE_B <= 5) begin
				assign addrb = {3'b0, B_ADDR[15:3]}*5;
			end
			else if (WIDTH_MODE_B <= 10) begin
				assign addrb = {4'b0, B_ADDR[15:4]}*10;
			end
			else if (WIDTH_MODE_B <= 20) begin
				assign addrb = {5'b0, B_ADDR[15:5]}*20;
			end
			else if (WIDTH_MODE_B <= 40) begin
				assign addrb = {6'b0, B_ADDR[15:6]}*40;
			end
		end
	endgenerate

	generate
		if (RAM_MODE == "SDP") begin
			// SDP write port
			always @(posedge clka)
			begin
				for (k=0; k < A_WR_WIDTH; k=k+1) begin
					if (k < 40) begin
						if (ena && wea && A_BM[k]) memory[addra+k] <= A_DI[k];
					end
					else begin // use both ports
						if (ena && wea && B_BM[k-40]) memory[addra+k] <= B_DI[k-40];
					end
				end
			end
			// SDP read port
			always @(posedge clkb)
			begin
				// "NO_CHANGE" only
				for (k=0; k < B_RD_WIDTH; k=k+1) begin
					if (k < 40) begin
						if (enb && !wea) A_DO_out[k] <= memory[addrb+k];
					end
					else begin // use both ports
						if (enb && !wea) B_DO_out[k-40] <= memory[addrb+k];
					end
				end
			end
		end
		else if (RAM_MODE == "TDP") begin
			// {A,B}_ADDR[0]=0 selects lower, {A,B}_ADDR[0]=1 selects upper cascade memory
			wire upper_sel_a = ((CAS == "UPPER") && (A_ADDR[0] == 1));
			wire lower_sel_a = ((CAS == "LOWER") && (A_ADDR[0] == 0));
			wire upper_sel_b = ((CAS == "UPPER") && (B_ADDR[0] == 1));
			wire lower_sel_b = ((CAS == "LOWER") && (B_ADDR[0] == 0));

			reg dumm;

			// Cascade output port A
			always @(*)
			begin
				if ((A_WR_MODE == "NO_CHANGE") && lower_sel_a) begin
					A_CO = memory[addra];
				end
				else if ((A_WR_MODE == "WRITE_THROUGH") && lower_sel_a) begin
					A_CO = ((wea && A_BM[0]) ? (A_DI[0]) : (memory[addra]));
				end
			end

			// Cascade output port B
			always @(*)
			begin
				if ((B_WR_MODE == "NO_CHANGE") && lower_sel_b) begin
					B_CO = memory[addrb];
				end
				else if ((B_WR_MODE == "WRITE_THROUGH") && lower_sel_b) begin
					B_CO = ((web && B_BM[0]) ? (B_DI[0]) : (memory[addrb]));
				end
			end

			// TDP port A
			always @(posedge clka)
			begin
				for (i=0; i < WIDTH_MODE_A; i=i+1) begin
					if (upper_sel_a || lower_sel_a || (CAS == "NONE")) begin
						if (ena && wea && A_BM[i])
							memory[addra+i] <= A_DI[i];
					end

					if (A_WR_MODE == "NO_CHANGE") begin
						if (ena && !wea) begin
							if (CAS == "UPPER") begin
								A_DO_out[i] <= ((A_ADDR[0] == 1) ? (memory[addra+i]) : (A_CI));
							end
							else if (CAS == "NONE") begin
								A_DO_out[i] <= memory[addra+i];
							end
						end
					end
					else if (A_WR_MODE == "WRITE_THROUGH") begin
						if (ena) begin
							if (CAS == "UPPER") begin
								if (A_ADDR[0] == 1) begin
									A_DO_out[i] <= ((wea && A_BM[i]) ? (A_DI[i]) : (memory[addra+i]));
								end else begin
									A_DO_out[i] <= A_CI;
								end
							end
							else if (CAS == "NONE") begin
								A_DO_out[i] <= ((wea && A_BM[i]) ? (A_DI[i]) : (memory[addra+i]));
							end
						end
					end
				end
			end
			// TDP port B
			always @(posedge clkb)
			begin
				for (i=0; i < WIDTH_MODE_B; i=i+1) begin
					if (upper_sel_b || lower_sel_b || (CAS == "NONE")) begin
						if (enb && web && B_BM[i])
							memory[addrb+i] <= B_DI[i];
					end

					if (B_WR_MODE == "NO_CHANGE") begin
						if (enb && !web) begin
							if (CAS == "UPPER") begin
								B_DO_out[i] <= ((B_ADDR[0] == 1) ? (memory[addrb+i]) : (B_CI));
							end
							else if (CAS == "NONE") begin
								B_DO_out[i] <= memory[addrb+i];
							end
						end
					end
					else if (B_WR_MODE == "WRITE_THROUGH") begin
						if (enb) begin
							if (CAS == "UPPER") begin
								if (B_ADDR[0] == 1) begin
									B_DO_out[i] <= ((web && B_BM[i]) ? (B_DI[i]) : (memory[addrb+i]));
								end else begin
									B_DO_out[i] <= B_CI;
								end
							end
							else if (CAS == "NONE") begin
								B_DO_out[i] <= ((web && B_BM[i]) ? (B_DI[i]) : (memory[addrb+i]));
							end
						end
					end
				end
			end
		end
	endgenerate

	// Optional output register
	generate
		if (A_DO_REG) begin
			always @(posedge clka) begin
				A_DO_reg <= A_DO_out;
			end
			assign A_DO = A_DO_reg;
		end
		else begin
			assign A_DO = A_DO_out;
		end
		if (B_DO_REG) begin
			always @(posedge clkb) begin
				B_DO_reg <= B_DO_out;
			end
			assign B_DO = B_DO_reg;
		end
		else begin
			assign B_DO = B_DO_out;
		end
	endgenerate
endmodule