URL
https://opencores.org/ocsvn/an-fpga-implementation-of-low-latency-noc-based-mpsoc/an-fpga-implementation-of-low-latency-noc-based-mpsoc/trunk
Subversion Repositories an-fpga-implementation-of-low-latency-noc-based-mpsoc
[/] [an-fpga-implementation-of-low-latency-noc-based-mpsoc/] [trunk/] [mpsoc/] [src_processor/] [lm32/] [verilog/] [src/] [lm32_addsub.v] - Rev 17
Compare with Previous | Blame | View Log
// ============================================================================= // COPYRIGHT NOTICE // Copyright 2006 (c) Lattice Semiconductor Corporation // ALL RIGHTS RESERVED // This confidential and proprietary software may be used only as authorised by // a licensing agreement from Lattice Semiconductor Corporation. // The entire notice above must be reproduced on all authorized copies and // copies may only be made to the extent permitted by a licensing agreement from // Lattice Semiconductor Corporation. // // Lattice Semiconductor Corporation TEL : 1-800-Lattice (USA and Canada) // 5555 NE Moore Court 408-826-6000 (other locations) // Hillsboro, OR 97124 web : http://www.latticesemi.com/ // U.S.A email: techsupport@latticesemi.com // =============================================================================/ // FILE DETAILS // Project : LatticeMico32 // File : lm32_addsub.v // Title : PMI adder/subtractor. // Version : 6.1.17 // ============================================================================= `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 ///////////////////////////////////////////////////// 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