Sat, 06 Aug 2011 00:02:46 +0100
[UPSTREAM PULL] Update baseline to LatticeMico32 v3.8 from Diamond 1.3-lm32 distribution package (datestamp May 2011)
| philpem@26 | 1 | // ================================================================== |
| philpem@26 | 2 | // >>>>>>>>>>>>>>>>>>>>>>> COPYRIGHT NOTICE <<<<<<<<<<<<<<<<<<<<<<<<< |
| philpem@26 | 3 | // ------------------------------------------------------------------ |
| philpem@26 | 4 | // Copyright (c) 2006-2011 by Lattice Semiconductor Corporation |
| philpem@26 | 5 | // ALL RIGHTS RESERVED |
| philpem@26 | 6 | // ------------------------------------------------------------------ |
| philpem@26 | 7 | // |
| philpem@26 | 8 | // IMPORTANT: THIS FILE IS AUTO-GENERATED BY THE LATTICEMICO SYSTEM. |
| philpem@26 | 9 | // |
| philpem@26 | 10 | // Permission: |
| philpem@26 | 11 | // |
| philpem@26 | 12 | // Lattice Semiconductor grants permission to use this code |
| philpem@26 | 13 | // pursuant to the terms of the Lattice Semiconductor Corporation |
| philpem@26 | 14 | // Open Source License Agreement. |
| philpem@26 | 15 | // |
| philpem@26 | 16 | // Disclaimer: |
| philpem@0 | 17 | // |
| philpem@26 | 18 | // Lattice Semiconductor provides no warranty regarding the use or |
| philpem@26 | 19 | // functionality of this code. It is the user's responsibility to |
| philpem@26 | 20 | // verify the user’s design for consistency and functionality through |
| philpem@26 | 21 | // the use of formal verification methods. |
| philpem@26 | 22 | // |
| philpem@26 | 23 | // -------------------------------------------------------------------- |
| philpem@26 | 24 | // |
| philpem@26 | 25 | // Lattice Semiconductor Corporation |
| philpem@26 | 26 | // 5555 NE Moore Court |
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| philpem@26 | 30 | // TEL: 1-800-Lattice (USA and Canada) |
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| philpem@26 | 32 | // |
| philpem@26 | 33 | // web: http://www.latticesemi.com/ |
| philpem@26 | 34 | // email: techsupport@latticesemi.com |
| philpem@26 | 35 | // |
| philpem@26 | 36 | // -------------------------------------------------------------------- |
| philpem@0 | 37 | // FILE DETAILS |
| philpem@0 | 38 | // Project : LatticeMico32 |
| philpem@0 | 39 | // File : lm32_addsub.v |
| philpem@0 | 40 | // Title : PMI adder/subtractor. |
| philpem@0 | 41 | // Version : 6.1.17 |
| philpem@0 | 42 | // : Initial Release |
| philpem@0 | 43 | // Version : 7.0SP2, 3.0 |
| philpem@0 | 44 | // : No Change |
| philpem@0 | 45 | // Version : 3.1 |
| philpem@0 | 46 | // : No Change |
| philpem@0 | 47 | // ============================================================================= |
| philpem@0 | 48 | |
| philpem@0 | 49 | `include "lm32_include.v" |
| philpem@0 | 50 | |
| philpem@0 | 51 | ///////////////////////////////////////////////////// |
| philpem@0 | 52 | // Module interface |
| philpem@0 | 53 | ///////////////////////////////////////////////////// |
| philpem@0 | 54 | |
| philpem@0 | 55 | module lm32_addsub ( |
| philpem@0 | 56 | // ----- Inputs ------- |
| philpem@0 | 57 | DataA, |
| philpem@0 | 58 | DataB, |
| philpem@0 | 59 | Cin, |
| philpem@0 | 60 | Add_Sub, |
| philpem@0 | 61 | // ----- Outputs ------- |
| philpem@0 | 62 | Result, |
| philpem@0 | 63 | Cout |
| philpem@0 | 64 | ); |
| philpem@0 | 65 | |
| philpem@0 | 66 | ///////////////////////////////////////////////////// |
| philpem@0 | 67 | // Inputs |
| philpem@0 | 68 | ///////////////////////////////////////////////////// |
| philpem@0 | 69 | |
| philpem@0 | 70 | input [31:0] DataA; |
| philpem@0 | 71 | input [31:0] DataB; |
| philpem@0 | 72 | input Cin; |
| philpem@0 | 73 | input Add_Sub; |
| philpem@0 | 74 | |
| philpem@0 | 75 | ///////////////////////////////////////////////////// |
| philpem@0 | 76 | // Outputs |
| philpem@0 | 77 | ///////////////////////////////////////////////////// |
| philpem@0 | 78 | |
| philpem@0 | 79 | output [31:0] Result; |
| philpem@0 | 80 | wire [31:0] Result; |
| philpem@0 | 81 | output Cout; |
| philpem@0 | 82 | wire Cout; |
| philpem@0 | 83 | |
| philpem@0 | 84 | ///////////////////////////////////////////////////// |
| philpem@0 | 85 | // Instantiations |
| philpem@0 | 86 | ///////////////////////////////////////////////////// |
| philpem@0 | 87 | |
| philpem@0 | 88 | generate |
| philpem@0 | 89 | if (`LATTICE_FAMILY == "SC" || `LATTICE_FAMILY == "SCM") begin |
| philpem@0 | 90 | wire [32:0] tmp_addResult = DataA + DataB + Cin; |
| philpem@0 | 91 | wire [32:0] tmp_subResult = DataA - DataB - !Cin; |
| philpem@0 | 92 | |
| philpem@0 | 93 | assign Result = (Add_Sub == 1) ? tmp_addResult[31:0] : tmp_subResult[31:0]; |
| philpem@0 | 94 | assign Cout = (Add_Sub == 1) ? tmp_addResult[32] : !tmp_subResult[32]; |
| philpem@0 | 95 | end else begin |
| philpem@0 | 96 | pmi_addsub #(// ----- Parameters ------- |
| philpem@0 | 97 | .pmi_data_width (32), |
| philpem@0 | 98 | .pmi_result_width (32), |
| philpem@0 | 99 | .pmi_sign ("off"), |
| philpem@0 | 100 | .pmi_family (`LATTICE_FAMILY), |
| philpem@0 | 101 | .module_type ("pmi_addsub")) |
| philpem@0 | 102 | addsub (// ----- Inputs ------- |
| philpem@0 | 103 | .DataA (DataA), |
| philpem@0 | 104 | .DataB (DataB), |
| philpem@0 | 105 | .Cin (Cin), |
| philpem@0 | 106 | .Add_Sub (Add_Sub), |
| philpem@0 | 107 | // ----- Outputs ------- |
| philpem@0 | 108 | .Result (Result), |
| philpem@0 | 109 | .Cout (Cout), |
| philpem@0 | 110 | .Overflow ()); |
| philpem@0 | 111 | end |
| philpem@0 | 112 | endgenerate |
| philpem@0 | 113 | |
| philpem@0 | 114 | endmodule |