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[/] [openmsp430/] [trunk/] [core/] [sim/] [rtl_sim/] [src/] [scan.v] - Rev 155
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/*===========================================================================*/ /* Copyright (C) 2001 Authors */ /* */ /* 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, write to the Free Software Foundation, */ /* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* */ /*===========================================================================*/ /* SCAN test */ /*---------------------------------------------------------------------------*/ /* The purpose of this test is to let the scan_mode and scan_enable signals */ /* toggle a bit in order to clean-up code coverage and give more visibility */ /* on potential "real" coverage loss. */ /* */ /* Author(s): */ /* - Olivier Girard, olgirard@gmail.com */ /* */ /*---------------------------------------------------------------------------*/ /* $Rev: 85 $ */ /* $LastChangedBy: olivier.girard $ */ /* $LastChangedDate: 2011-01-28 22:05:37 +0100 (Fri, 28 Jan 2011) $ */ /*===========================================================================*/ integer ii; initial begin $display(" ==============================================="); $display("| START SIMULATION |"); $display(" ==============================================="); repeat(5) @(posedge mclk); stimulus_done = 0; // Disable detection of the end of test force inst_pc = 16'h0000; // SCAN MODE //------------------------------ for ( ii=0; ii < 8; ii=ii+1) begin scan_mode = ~scan_mode; repeat(5) @(posedge mclk); end scan_mode = 1'b0; reset_n = 1'b1; #93; reset_n = 1'b0; #593; reset_n = 1'b1; repeat(20) @(posedge mclk); // SCAN ENABLE //------------------------------ for ( ii=0; ii < 8; ii=ii+1) begin scan_enable = ~scan_enable; repeat(5) @(posedge mclk); end scan_enable = 1'b0; reset_n = 1'b1; #93; reset_n = 1'b0; #593; reset_n = 1'b1; repeat(20) @(posedge mclk); // SCAN MODE & SCAN ENABLE //------------------------------ for ( ii=0; ii < 8; ii=ii+1) begin scan_mode = ~scan_mode; repeat(5) @(posedge mclk); scan_enable = ~scan_enable; repeat(5) @(posedge mclk); scan_enable = ~scan_enable; repeat(5) @(posedge mclk); scan_mode = ~scan_mode; repeat(5) @(posedge mclk); end scan_mode = 1'b0; scan_enable = 1'b0; repeat(5) @(posedge mclk); for ( ii=0; ii < 8; ii=ii+1) begin scan_enable = ~scan_enable; repeat(5) @(posedge mclk); scan_mode = ~scan_mode; repeat(5) @(posedge mclk); scan_mode = ~scan_mode; repeat(5) @(posedge mclk); scan_enable = ~scan_enable; repeat(5) @(posedge mclk); end scan_mode = 1'b0; scan_enable = 1'b0; reset_n = 1'b1; #93; reset_n = 1'b0; #593; reset_n = 1'b1; repeat(20) @(posedge mclk); release inst_pc; stimulus_done = 1; end
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