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