Subversion Repositories mips32r1

`timescale 1ns / 1ps

/*

 * File         : Compare.v

 * Project      : University of Utah, XUM Project MIPS32 core

 * Creator(s)   : Grant Ayers (ayers@cs.utah.edu)

 *

 * Modification History:

 *   Rev   Date         Initials  Description of Change

 *   1.0   15-Jun-2011  GEA       Initial design.

 *

 * Standards/Formatting:

 *   Verilog 2001, 4 soft tab, wide column.

 *

 * Description:

 *   Compares two 32-bit values and outputs the following information about them:

 *      EQ  : A and B are equal

 *      GZ  : A is greater than zero

 *      LZ  : A is less than zero

 *      GEZ : A is greater than or equal to zero

 *      LEZ : A is less than or equal to zero

 */

module Compare(

    input  [31:0] A,

    input  [31:0] B,

    output EQ,

    output GZ,

    output LZ,

    output GEZ,

    output LEZ

    );

    wire   ZeroA = (A == 32'b0);

    assign EQ  = ( A == B);

    assign GZ  = (~A[31] & ~ZeroA);

    assign LZ  =   A[31];

    assign GEZ =  ~A[31];

    assign LEZ = ( A[31] |  ZeroA);

endmodule