alu_src3_sel.v
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- //////////////////////////////////////////////////////////////////////
- //// ////
- //// 8051 alu source 3 select module ////
- //// ////
- //// This file is part of the 8051 cores project ////
- //// http://www.opencores.org/cores/8051/ ////
- //// ////
- //// Description ////
- //// Multiplexer wiht whitch we select data on alu source 3 ////
- //// ////
- //// To Do: ////
- //// nothing ////
- //// ////
- //// Author(s): ////
- //// - Simon Teran, simont@opencores.org ////
- //// ////
- //////////////////////////////////////////////////////////////////////
- //// ////
- //// Copyright (C) 2000 Authors and OPENCORES.ORG ////
- //// ////
- //// This source file may be used and distributed without ////
- //// restriction provided that this copyright statement is not ////
- //// removed from the file and that any derivative work contains ////
- //// the original copyright notice and the associated disclaimer. ////
- //// ////
- //// This source file is free software; you can redistribute it ////
- //// and/or modify it under the terms of the GNU Lesser General ////
- //// Public License as published by the Free Software Foundation; ////
- //// either version 2.1 of the License, or (at your option) any ////
- //// later version. ////
- //// ////
- //// This source is distributed in the hope that it will be ////
- //// useful, but WITHOUT ANY WARRANTY; without even the implied ////
- //// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
- //// PURPOSE. See the GNU Lesser General Public License for more ////
- //// details. ////
- //// ////
- //// You should have received a copy of the GNU Lesser General ////
- //// Public License along with this source; if not, download it ////
- //// from http://www.opencores.org/lgpl.shtml ////
- //// ////
- //////////////////////////////////////////////////////////////////////
- //
- // ver: 1
- //
- module alu_src3_sel (sel, pc, dptr, out);
- //
- // sel select signals (from decoder, delayd one clock)
- // pc program counter input
- // dptr data pointer input
- // des output (alu sorce 2)
- input sel;
- input [7:0] pc, dptr;
- output [7:0] out;
- assign out = sel ? pc : dptr;
- endmodule