96 lines
3.0 KiB
Verilog
96 lines
3.0 KiB
Verilog
// ==================================================================
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// >>>>>>>>>>>>>>>>>>>>>>> COPYRIGHT NOTICE <<<<<<<<<<<<<<<<<<<<<<<<<
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// ------------------------------------------------------------------
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// Copyright (c) 2006-2011 by Lattice Semiconductor Corporation
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// ALL RIGHTS RESERVED
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// ------------------------------------------------------------------
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//
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// IMPORTANT: THIS FILE IS AUTO-GENERATED BY THE LATTICEMICO SYSTEM.
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//
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// Permission:
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//
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// Lattice Semiconductor grants permission to use this code
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// pursuant to the terms of the Lattice Semiconductor Corporation
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// Open Source License Agreement.
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//
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// Disclaimer:
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//
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// Lattice Semiconductor provides no warranty regarding the use or
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// functionality of this code. It is the user's responsibility to
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// verify the user's design for consistency and functionality through
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// the use of formal verification methods.
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//
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// --------------------------------------------------------------------
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//
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// Lattice Semiconductor Corporation
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// 5555 NE Moore Court
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// Hillsboro, OR 97214
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// U.S.A
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//
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// TEL: 1-800-Lattice (USA and Canada)
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// 503-286-8001 (other locations)
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//
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// web: http://www.latticesemi.com/
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// email: techsupport@latticesemi.com
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//
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// --------------------------------------------------------------------
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// FILE DETAILS
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// Project : LatticeMico32
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// File : lm32_addsub.v
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// Title : PMI adder/subtractor.
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// Version : 6.1.17
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// : Initial Release
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// Version : 7.0SP2, 3.0
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// : No Change
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// Version : 3.1
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// : No Change
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// =============================================================================
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`include "lm32_include.v"
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/////////////////////////////////////////////////////
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// Module interface
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/////////////////////////////////////////////////////
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module lm32_addsub (
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// ----- Inputs -------
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DataA,
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DataB,
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Cin,
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Add_Sub,
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// ----- Outputs -------
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Result,
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Cout
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);
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/////////////////////////////////////////////////////
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// Inputs
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/////////////////////////////////////////////////////
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input [31:0] DataA;
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input [31:0] DataB;
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input Cin;
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input Add_Sub;
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/////////////////////////////////////////////////////
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// Outputs
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/////////////////////////////////////////////////////
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output [31:0] Result;
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wire [31:0] Result;
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output Cout;
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wire Cout;
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/////////////////////////////////////////////////////
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// Instantiations
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/////////////////////////////////////////////////////
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// Modified for Milkymist: removed non-portable instantiated block
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wire [32:0] tmp_addResult = DataA + DataB + Cin;
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wire [32:0] tmp_subResult = DataA - DataB - !Cin;
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assign Result = (Add_Sub == 1) ? tmp_addResult[31:0] : tmp_subResult[31:0];
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assign Cout = (Add_Sub == 1) ? tmp_addResult[32] : !tmp_subResult[32];
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endmodule
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