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//////////////////////////////////////////////////////////////////
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// //
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// Instruction memory system //
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// //
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// This file is part of the Edge project //
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// http://www.opencores.org/project,edge //
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// //
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// Description //
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// Instruction memory system is a wrapper for an IP core //
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// or unit to be used as memory to embed MIPS instructions. //
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// The contents of this file are target dependent. //
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// //
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// Author(s): //
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// - Hesham AL-Matary, heshamelmatary@gmail.com //
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// //
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//////////////////////////////////////////////////////////////////
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// //
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// Copyright (C) 2014 Authors and OPENCORES.ORG //
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// //
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// This source file may be used and distributed without //
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// restriction provided that this copyright statement is not //
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// removed from the file and that any derivative work contains //
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// the original copyright notice and the associated disclaimer. //
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// //
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// This source file is free software; you can redistribute it //
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// and/or modify it under the terms of the GNU Lesser General //
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// Public License as published by the Free Software Foundation; //
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// either version 2.1 of the License, or (at your option) any //
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// later version. //
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// //
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// This source is distributed in the hope that it will be //
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// useful, but WITHOUT ANY WARRANTY; without even the implied //
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// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR //
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// PURPOSE. See the GNU Lesser General Public License for more //
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// details. //
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// //
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// You should have received a copy of the GNU Lesser General //
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// Public License along with this source; if not, download it //
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// from http://www.opencores.org/lgpl.shtml //
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// //
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//////////////////////////////////////////////////////////////////
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module Instruction_Memory
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(
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input CLK,
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input[31:0] address,
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output[31:0] dout,
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input reset
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);
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wire[31:0] addr;
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wire[31:0] BRAM_ADDR;
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assign addr = ((address) & 32'hFFFFFFFC)/4 ;
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assign BRAM_ADDR = (addr <= 512)? addr : 0;
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ROM32x512 ROM
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(
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.clka(CLK), // input clka
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.addra(BRAM_ADDR), // input [9 : 0] addra
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.douta(dout) // output [31 : 0] douta
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);
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endmodule
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