/////////////////////////////////////////////////////////////////////
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<##//////////////////////////////////////////////////////////////////
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//// ////
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//// ////
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//// Author: Eyal Hochberg ////
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//// Author: Eyal Hochberg ////
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//// eyal@provartec.com ////
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//// eyal@provartec.com ////
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//// ////
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//// ////
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//// Downloaded from: http://www.opencores.org ////
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//// Downloaded from: http://www.opencores.org ////
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/////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////
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//// ////
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//// ////
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//// Copyright (C) 2010 Provartec LTD ////
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//// Copyright (C) 2010 Provartec LTD ////
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//// www.provartec.com ////
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//// www.provartec.com ////
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//// info@provartec.com ////
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//// info@provartec.com ////
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//// ////
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//// ////
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//// This source file may be used and distributed without ////
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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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//// 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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//// 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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//// the original copyright notice and the associated disclaimer.////
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//// ////
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//// ////
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//// This source file is free software; you can redistribute it ////
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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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//// 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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//// Public License as published by the Free Software Foundation.////
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//// ////
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//// ////
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//// This source is distributed in the hope that it will be ////
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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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//// 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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//// 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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//// PURPOSE. See the GNU Lesser General Public License for more////
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//// details. http://www.gnu.org/licenses/lgpl.html ////
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//// details. http://www.gnu.org/licenses/lgpl.html ////
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//// ////
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//// ////
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/////////////////////////////////////////////////////////////////////
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//////////////////////////////////////////////////////////////////##>
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OUTFILE prgen_rand.v
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OUTFILE prgen_rand.v
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function integer rand_chance;
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function integer rand_chance;
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input [31:0] chance_true;
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input [31:0] chance_true;
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begin
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begin
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if (chance_true > 100)
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if (chance_true > 100)
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begin
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begin
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$display("RAND_CHANCE-E-: fatal error, rand_chance called with percent chance larger than 100.\tTime: %0d ns", $time);
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$display("RAND_CHANCE-E-: fatal error, rand_chance called with percent chance larger than 100.\tTime: %0d ns", $time);
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$finish;
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$finish;
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end
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end
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rand_chance = (rand(1,100) <= chance_true);
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rand_chance = (rand(1,100) <= chance_true);
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end
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end
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endfunction // rand_chance
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endfunction // rand_chance
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function integer rand;
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function integer rand;
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input [31:0] min;
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input [31:0] min;
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input [31:0] max;
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input [31:0] max;
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integer range;
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integer range;
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begin
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begin
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if (min > max)
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if (min > max)
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begin
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begin
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$display("RAND-E-: fatal error, rand was called with min larger than max.\tTime: %0d ns", $time);
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$display("RAND-E-: fatal error, rand was called with min larger than max.\tTime: %0d ns", $time);
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$finish;
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$finish;
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end
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end
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range = (max - min) + 1;
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range = (max - min) + 1;
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if (range == 0) range = -1;
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if (range == 0) range = -1;
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rand = min + ($random % range);
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rand = min + ($random % range);
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end
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end
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endfunction // rand
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endfunction // rand
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function integer align;
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function integer align;
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input [31:0] num;
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input [31:0] num;
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input [31:0] align_size;
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input [31:0] align_size;
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begin
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begin
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align = num - (num % align_size);
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align = num - (num % align_size);
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end
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end
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endfunction
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endfunction
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function integer rand_align;
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function integer rand_align;
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input [31:0] min;
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input [31:0] min;
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input [31:0] max;
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input [31:0] max;
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input [31:0] align_val;
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input [31:0] align_val;
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begin
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begin
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rand_align = rand(min, max);
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rand_align = rand(min, max);
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if (rand_align > align_val)
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if (rand_align > align_val)
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rand_align = align(rand_align, align_val);
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rand_align = align(rand_align, align_val);
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end
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end
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endfunction
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endfunction
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