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ce10dbd11c
git-svn-id: file://localhost/svn/verilator/trunk/verilator@753 77ca24e4-aefa-0310-84f0-b9a241c72d87
84 lines
2.1 KiB
C++
84 lines
2.1 KiB
C++
// $Id$
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// DESCRIPTION: Verilator Example: Top level main for invoking model
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//
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// Copyright 2003-2006 by Wilson Snyder. This program is free software; you can
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// redistribute it and/or modify it under the terms of either the GNU
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// General Public License or the Perl Artistic License.
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#include <verilated.h> // Defines common routines
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#include "Vtop.h" // From Verilating "top.v"
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#if VM_TRACE
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# include <SpTraceVcdC.h> // Trace file format header (from SystemPerl)
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#endif
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Vtop *top; // Instantiation of module
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unsigned int main_time = 0; // Current simulation time
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double sc_time_stamp () { // Called by $time in Verilog
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return main_time;
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}
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int main(int argc, char **argv, char **env) {
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if (0 && argc && argv && env) {} // Prevent unused variable warnings
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top = new Vtop; // Create instance of module
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Verilated::debug(0);
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#if VM_TRACE // If verilator was invoked with --trace
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Verilated::traceEverOn(true); // Verilator must compute traced signals
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cout << "Enabling waves...\n";
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SpTraceVcdCFile* tfp = new SpTraceVcdCFile;
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top->trace (tfp, 99); // Trace 99 levels of hierarchy
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tfp->open ("vl_dump.vcd"); // Open the dump file
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#endif
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top->reset_l = 1; // Set some inputs
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top->fastclk = 0;
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top->clk = 0;
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top->passed = 0;
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while (main_time < 60 && !top->passed) {
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if ((main_time % 10) == 3) { // Toggle clock
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top->clk = 1;
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}
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if ((main_time % 10) == 8) {
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top->clk = 0;
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}
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if (main_time > 10) {
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top->reset_l = 1; // Deassert reset
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} else if (main_time > 1) {
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top->reset_l = 0; // Assert reset
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}
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top->eval(); // Evaluate model
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#if VM_TRACE
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tfp->dump (main_time); // Create waveform trace for this timestamp
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#endif
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// Read outputs
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VL_PRINTF ("[%d] %x %x %x %x %x_%08x_%08x\n",
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main_time, top->clk, top->reset_l, top->passed,
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top->out_small, top->out_wide[2], top->out_wide[1], top->out_wide[0]);
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top->fastclk = !top->fastclk;
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main_time++; // Time passes...
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}
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top->final();
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#if VM_TRACE
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tfp->close();
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#endif
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if (!top->passed) {
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VL_PRINTF ("A Test failed\n");
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abort();
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} else {
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VL_PRINTF ("All Tests passed\n");
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}
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exit(0L);
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}
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