fb_adder.v

基于butterworth的iir滤波器的verilog代码

// megafunction wizard: %LPM_ADD_SUB%
// GENERATION: STANDARD
// VERSION: WM1.0
// MODULE: lpm_add_sub 

// ============================================================
// File Name: fb_adder.v
// Megafunction Name(s):
// 			lpm_add_sub
// ============================================================
// ************************************************************
// THIS IS A WIZARD-GENERATED FILE. DO NOT EDIT THIS FILE!
// ************************************************************


//Copyright (C) 1991-2002 Altera Corporation
//Any  megafunction  design,  and related netlist (encrypted  or  decrypted),
//support information,  device programming or simulation file,  and any other
//associated  documentation or information  provided by  Altera  or a partner
//under  Altera's   Megafunction   Partnership   Program  may  be  used  only
//to program  PLD  devices (but not masked  PLD  devices) from  Altera.   Any
//other  use  of such  megafunction  design,  netlist,  support  information,
//device programming or simulation file,  or any other  related documentation
//or information  is prohibited  for  any  other purpose,  including, but not
//limited to  modification,  reverse engineering,  de-compiling, or use  with
//any other  silicon devices,  unless such use is  explicitly  licensed under
//a separate agreement with  Altera  or a megafunction partner.  Title to the
//intellectual property,  including patents,  copyrights,  trademarks,  trade
//secrets,  or maskworks,  embodied in any such megafunction design, netlist,
//support  information,  device programming or simulation file,  or any other
//related documentation or information provided by  Altera  or a megafunction
//partner, remains with Altera, the megafunction partner, or their respective
//licensors. No other licenses, including any licenses needed under any third
//party's intellectual property, are provided herein.

module fb_adder (
	dataa,
	datab,
	result,
	cout,
	overflow);

	input	[17:0]  dataa;
	input	[17:0]  datab;
	output	[17:0]  result;
	output	  cout;
	output	  overflow;

	wire  sub_wire0;
	wire  sub_wire1;
	wire [17:0] sub_wire2;
	wire  overflow = sub_wire0;
	wire  cout = sub_wire1;
	wire [17:0] result = sub_wire2[17:0];

	lpm_add_sub	lpm_add_sub_component (
				.dataa (dataa),
				.datab (datab),
				.overflow (sub_wire0),
				.cout (sub_wire1),
				.result (sub_wire2));
	defparam
		lpm_add_sub_component.lpm_width = 18,
		lpm_add_sub_component.lpm_direction = "ADD",
		lpm_add_sub_component.lpm_type = "LPM_ADD_SUB",
		lpm_add_sub_component.lpm_hint = "ONE_INPUT_IS_CONSTANT=NO";


endmodule

// ============================================================
// CNX file retrieval info
// ============================================================
// Retrieval info: PRIVATE: nBit NUMERIC "18"
// Retrieval info: PRIVATE: Function NUMERIC "0"
// Retrieval info: PRIVATE: WhichConstant NUMERIC "0"
// Retrieval info: PRIVATE: ConstantA NUMERIC "0"
// Retrieval info: PRIVATE: ConstantB NUMERIC "0"
// Retrieval info: PRIVATE: ValidCtA NUMERIC "0"
// Retrieval info: PRIVATE: ValidCtB NUMERIC "0"
// Retrieval info: PRIVATE: CarryIn NUMERIC "0"
// Retrieval info: PRIVATE: CarryOut NUMERIC "1"
// Retrieval info: PRIVATE: Overflow NUMERIC "1"
// Retrieval info: PRIVATE: Latency NUMERIC "0"
// Retrieval info: PRIVATE: aclr NUMERIC "0"
// Retrieval info: PRIVATE: clken NUMERIC "0"
// Retrieval info: PRIVATE: LPM_PIPELINE NUMERIC "0"
// Retrieval info: CONSTANT: LPM_WIDTH NUMERIC "18"
// Retrieval info: CONSTANT: LPM_DIRECTION STRING "ADD"
// Retrieval info: CONSTANT: LPM_TYPE STRING "LPM_ADD_SUB"
// Retrieval info: CONSTANT: LPM_HINT STRING "ONE_INPUT_IS_CONSTANT=NO"
// Retrieval info: USED_PORT: result 0 0 18 0 OUTPUT NODEFVAL result[17..0]
// Retrieval info: USED_PORT: dataa 0 0 18 0 INPUT NODEFVAL dataa[17..0]
// Retrieval info: USED_PORT: datab 0 0 18 0 INPUT NODEFVAL datab[17..0]
// Retrieval info: USED_PORT: cout 0 0 0 0 OUTPUT NODEFVAL cout
// Retrieval info: USED_PORT: overflow 0 0 0 0 OUTPUT NODEFVAL overflow
// Retrieval info: CONNECT: result 0 0 18 0 @result 0 0 18 0
// Retrieval info: CONNECT: @dataa 0 0 18 0 dataa 0 0 18 0
// Retrieval info: CONNECT: @datab 0 0 18 0 datab 0 0 18 0
// Retrieval info: CONNECT: cout 0 0 0 0 @cout 0 0 0 0
// Retrieval info: CONNECT: overflow 0 0 0 0 @overflow 0 0 0 0
// Retrieval info: LIBRARY: lpm lpm.lpm_components.all