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olivier.gi |
/*===========================================================================*/
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/* Copyright (C) 2001 Authors */
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/* */
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/* This source file may be used and distributed without restriction provided */
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/* that this copyright statement is not removed from the file and that any */
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/* derivative work contains the original copyright notice and the associated */
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/* disclaimer. */
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/* */
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/* This source file is free software; you can redistribute it and/or modify */
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/* it under the terms of the GNU Lesser General Public License as published */
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/* by the Free Software Foundation; either version 2.1 of the License, or */
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/* (at your option) any later version. */
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/* */
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/* This source is distributed in the hope that it will be useful, but WITHOUT*/
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/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
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/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */
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/* License for more details. */
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/* */
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/* You should have received a copy of the GNU Lesser General Public License */
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/* along with this source; if not, write to the Free Software Foundation, */
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/* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
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/* */
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/*===========================================================================*/
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/* SCAN test */
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/*---------------------------------------------------------------------------*/
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/* The purpose of this test is to let the scan_mode and scan_enable signals */
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/* toggle a bit in order to clean-up code coverage and give more visibility */
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/* on potential "real" coverage loss. */
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/* */
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/* Author(s): */
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/* - Olivier Girard, olgirard@gmail.com */
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/* */
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/*---------------------------------------------------------------------------*/
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/* $Rev: 85 $ */
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/* $LastChangedBy: olivier.girard $ */
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/* $LastChangedDate: 2011-01-28 22:05:37 +0100 (Fri, 28 Jan 2011) $ */
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/*===========================================================================*/
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integer ii;
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initial
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begin
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$display(" ===============================================");
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$display("| START SIMULATION |");
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$display(" ===============================================");
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repeat(5) @(posedge mclk);
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stimulus_done = 0;
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// Disable detection of the end of test
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force inst_pc = 16'h0000;
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// SCAN MODE
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//------------------------------
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for ( ii=0; ii < 8; ii=ii+1)
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begin
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scan_mode = ~scan_mode;
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repeat(5) @(posedge mclk);
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end
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scan_mode = 1'b0;
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reset_n = 1'b1;
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#93;
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reset_n = 1'b0;
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#593;
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reset_n = 1'b1;
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repeat(20) @(posedge mclk);
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// SCAN ENABLE
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//------------------------------
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for ( ii=0; ii < 8; ii=ii+1)
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begin
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scan_enable = ~scan_enable;
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repeat(5) @(posedge mclk);
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end
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scan_enable = 1'b0;
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reset_n = 1'b1;
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#93;
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reset_n = 1'b0;
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#593;
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reset_n = 1'b1;
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repeat(20) @(posedge mclk);
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// SCAN MODE & SCAN ENABLE
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//------------------------------
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for ( ii=0; ii < 8; ii=ii+1)
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begin
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scan_mode = ~scan_mode;
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repeat(5) @(posedge mclk);
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scan_enable = ~scan_enable;
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repeat(5) @(posedge mclk);
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scan_enable = ~scan_enable;
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repeat(5) @(posedge mclk);
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scan_mode = ~scan_mode;
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repeat(5) @(posedge mclk);
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end
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scan_mode = 1'b0;
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scan_enable = 1'b0;
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repeat(5) @(posedge mclk);
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for ( ii=0; ii < 8; ii=ii+1)
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begin
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scan_enable = ~scan_enable;
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repeat(5) @(posedge mclk);
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scan_mode = ~scan_mode;
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repeat(5) @(posedge mclk);
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scan_mode = ~scan_mode;
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repeat(5) @(posedge mclk);
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scan_enable = ~scan_enable;
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repeat(5) @(posedge mclk);
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end
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scan_mode = 1'b0;
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scan_enable = 1'b0;
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reset_n = 1'b1;
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#93;
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reset_n = 1'b0;
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#593;
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reset_n = 1'b1;
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repeat(20) @(posedge mclk);
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release inst_pc;
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stimulus_done = 1;
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end
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