Version bump; commentary

git-svn-id: file://localhost/svn/verilator/trunk/verilator@942 77ca24e4-aefa-0310-84f0-b9a241c72d87
Support V2K function/task argument lists.
2026-10-04 17:13:40 +02:00 · 2007-06-21 21:00:38 +00:00 · 2007-06-19 23:43:14 +00:00 · 2007-06-15 14:39:52 +00:00 · 2007-06-14 21:27:40 +00:00 · 2007-06-14 18:34:08 +00:00
54 changed files with 1523 additions and 556 deletions
@@ -3,6 +3,32 @@ Revision history for Verilator
 The contributors that suggested a given feature are shown in [].  [by ...]
 indicates the contributor was also the author of the fix; Thanks!

+* Verilator 3.652 6/21/2007
+
+**** Report as many warning types as possible before exiting.
+
+**** Support V2K portlists with "input a,b,...".  [Mark Nodine]
+
+**** Support V2K function/task argument lists.
+
+**** Optimize constant $display arguments.
+
+**** Fix Preprocessor dropping some `line directives.  [Mark Nodine]
+
+* Verilator 3.651 5/22/2007
+
+***  Added verilator_profcfunc utility.  [Gene Weber]
+
+***  Treat modules within `celldefine and `endcelldefine as if in library.
+
+***  Support functions which return integers.  [Mark Nodine]
+
+**** Warn if flex is not installed.  [Ralf Karge]
+
+**** Ignore `protect and `endprotect.
+
+**** Allow empty case/endcase blocks.
+
 * Verilator 3.650 4/20/2007

 **   Add --compiler msvc option.  This is now required when Verilated code
@@ -26,11 +26,11 @@ Features:
 		Points should be per-scope like everything else rather then per-module
 		Expression coverage (see notes)
 	More Verilog 2001 Support
-		C-style function and task arguments.  [Wim Michiels]
 		(* *) Attributes  (just ignore -- preprocessor?)
 		Real numbers (NEVER)
 		Recursive functions (NEVER)
 		Verilog configuration files (NEVER)
+	DPI to define C/C++ calls from Verilog

 Long-term Features
 	Assertions
@@ -214,6 +214,66 @@ C++, and linked with the Verilated files.

 The resulting executable will perform the actual simulation.

+=head1 ARGUMENT SUMMARY
+
+This is a short summary of the arguments to Verilator.  See the detailed
+descriptions in the next sections for more information.
+
+    {file.v}                    Verilog top level filenames
+    {file.c/cc/cpp}             Optional C++ files to link in
+
+    --assert                    Enable all assertions
+    --bin <filename>            Override Verilator binary
+    --cc                        Create C++ output
+    --compiler <compiler-name>  Tune for specified C++ compiler
+    --coverage                  Enable all coverage
+    --coverage-line             Enable line coverage
+    --coverage-user             Enable PSL/SVL user coverage
+    -D<var>[=<value>]           Set preprocessor define
+    --debug                     Enable debugging
+    --debug-check               Enable debugging assertions
+    --dump-tree                 Enable dumping .tree files
+    -E                          Preprocess, but do not compile
+    --exe                       Link to create executable
+    -f <file>                   Parse options from a file
+    --help                      Display this help.
+    -I<dir>                     Directory to search for includes
+    --inhibit-sim               Create function to turn off sim
+    --inline-mult <value>       Tune module inlining
+    --lint-only                 Lint, but do not make output
+    --MMD                       Create .d dependency files
+    --MP                        Create phony dependency targets
+    --Mdir <directory>          Name of output object directory
+    --mod-prefix <topname>      Name to prepend to lower classes
+    --no-skip-identical         Disable skipping identical output
+    -O0                         Disable optimizations
+    -O3                         High performance optimizations
+    -O<optimization-letter>     Selectable optimizations
+    --output-split <bytes>      Split .cpp files into pieces
+    --output-split-cfuncs <statements>   Split .ccp functions
+    --pins64                    Use uint64_t's for 33-64 bit sigs
+    --prefix <topname>          Name of top level class
+    --profile-cfuncs            Name functions for profiling
+    --private                   Debugging; see docs
+    --psl                       Enable PSL parsing
+    --public                    Debugging; see docs
+    --sc                        Create SystemC output
+    --sp                        Create SystemPerl output
+    --stats                     Create statistics file
+    --trace                     Enable waveform creation
+    --trace-depth <levels>      Depth of tracing
+    -U<var>                     Undefine preprocessor define
+    --underline-zero            Zero signals with leading _'s
+    -v <filename>               Verilog library
+    -Werror-<message>           Convert warning to error
+    -Wno-<message>              Disable warning
+    -x-assign <mode>            Initially assign Xs to this value
+    -y <dir>                    Directory to search for modules
+
+    +define+<var>+<value>       Set preprocessor define
+    +incdir+<dir>               Directory to search for includes
+    +libext+<ext>+[ext]...      Extensions for finding modules
+
 =head1 ARGUMENTS

 =over 4
@@ -320,6 +380,12 @@ internal assertions, debugging messages, and intermediate form dump files.
 Rarely needed.  Enable internal debugging assertion checks, without
 changing debug verbosity.  Enabled automatically when --debug specified.

+=item --dump-tree
+
+Rarely needed.  Enable writing .tree debug files.  This is enabled with
+--debug, so "--debug --no-dump-tree" may be useful if the dump files are
+large and not desired.
+
 =item -E

 Preprocess the source code, but do not compile, as with 'gcc -E'.  Output
@@ -577,7 +643,7 @@ We'll compile this example into C++.
      int main(int argc, char **argv, char **env) {
          Vour* top = new Vour;
          while (!Verilated::gotFinish()) { top->eval(); }
-          exit(0);	
+          exit(0);
      }
    EOF

@@ -637,7 +703,7 @@ This is an example similar to the above, but using SystemPerl.
          top = new Vour("top");   // SP_CELL (top, Vour);
          top->clk(clk);           // SP_PIN  (top, clk, clk);
          while (!Verilated::gotFinish()) { sc_start(1); }
-          exit(0);	
+          exit(0);
      }
    EOF

@@ -730,9 +796,9 @@ feedback driven compilation.  With GCC, using -fprofile-arcs, then

 You may uncover further tuning possibilities by profiling the Verilog code.
 Use Verilator's --profile-cfuncs, then GCC's -g -pg.  You can then run
-either oprofile or gprof to see where in the C++ code, and by looking at
-the mangled function name where in the Verilog code most of the time is
-being spent.
+either oprofile or gprof to see where in the C++ code the time is spent.
+Run the gprof output through verilator_profcfunc and it will tell you what
+Verilog line numbers on which most of the time is being spent.

 When done, please let the author know the results.  I like to keep tabs on
 how Verilator compares, and may be able to suggest additional improvements.
@@ -1195,7 +1261,7 @@ lint_restore*/.  For example:
 If SOME_WARNING was on before the lint_off, it will now be restored to on,
 and if it was off before the lint_off it will remain off.

-=item /*verilator no_inline_task*/ 
+=item /*verilator no_inline_task*/

 Used in a function or task variable definition section to specify the
 function or task should not be inlined into where it is used.  This may
@@ -1434,6 +1500,14 @@ This section describes specific limitations for each language keyword.

 =over 4

+=item `__FILE__, `__LINE__, `begin_keywords, `begin_keywords, `begin_keywords,
+`begin_keywords, `begin_keywords, `define, `else, `elsif, `end_keywords,
+`endif, `error, `ifdef, `ifndef, `include, `line, `systemc_ctor,
+`systemc_dtor, `systemc_header, `systemc_imp_header,
+`systemc_implementation, `systemc_interface, `timescale, `undef, `verilog
+
+Fully supported.
+
 =item always, always_comb, always_ff, always_latch, and, assign, begin,
 buf, case, casex, casez, default, defparam, do-while, else, end, endcase,
 endfunction, endgenerate, endmodule, endspecify, endtask, final, for,
@@ -1453,8 +1527,9 @@ All specify blocks and timing checks are ignored.
 Verilator does not perform warning checking on uwires, it treats the uwire
 keyword as if it were the normal wire keyword.

-=item $bits, $countones, $finish, $isunknown, $onehot, $onehot0, $readmemb,
-$readmemh, $signed, $stop, $time, $unsigned
+=item $bits, $countones, $error, $fatal, $finish, $info, $isunknown,
+$onehot, $onehot0, $readmemb, $readmemh, $signed, $stop, $time, $unsigned,
+$warning.

 Generally supported.

@@ -1861,6 +1936,25 @@ so your simulator shouldn't have to be -- and Verilator is closer to the
 synthesis interpretation, so this is a good thing for getting working
 silicon.

+=item May programs I create with Verilator remain under my own copyright?
+
+Yes, it's just like using GCC on your programs.  If you change Verilator
+itself, you must make the source code available under the GNU Public
+License.  However, the include and generated files use the GNU Lesser
+Public License, which means that files using them are NOT required to be released.
+
+You also have the option of using the Perl Artistic License, which again
+does not require you release your Verilog or generated code.
+
+=item Why is running Verilator so slow?
+
+Verilator needs more memory then the resulting simulator will require, as
+Verilator creates internally all of the state of the resulting simulator in
+order to optimize it.  If it takes more then a minute or so (and you're not
+using --debug), see if your machine is paging; most likely you need to run
+it on a machine with more memory.  Verilator is a full 64 bit application
+and may use more then 4GB, but about 1GB is the maximum typically needed.
+
 =item How do I generate waveforms (traces) in C++?

 See the next question for SystemC mode.
@@ -2069,7 +2163,7 @@ Communications, Sun Microsystems, Nauticus Networks, and SiCortex.

 The people who have contributed code or other major functionality are Paul
 Wasson, Duane Galbi, and Wilson Snyder.  Major testers include Jeff Dutton,
-Ralf Karge and Wim Michiels.
+Ralf Karge, David Hewson, Wim Michiels, and Gene Weber.

 Some of the people who have provided ideas and feedback for Verilator
 include Hans Van Antwerpen, Jens Arm, David Black, Gregg Bouchard, Chris
@@ -2096,7 +2190,7 @@ Major concepts by Paul Wasson and Duane Galbi.

 =head1 SEE ALSO

-L<systemperl>, L<vcoverage>, L<make>
+L<verilator_profcfunc>, L<systemperl>, L<vcoverage>, L<make>

 =cut

@@ -35,12 +35,13 @@ my $Opt_A;
 my $Opt_B;
 autoflush STDOUT 1;
 autoflush STDERR 1;
+Getopt::Long::config ("no_auto_abbrev");
 if (! GetOptions (
 		  "help"	=> \&usage,
 		  "debug"	=> \&debug,
 		  "<>"		=> \&parameter,
 		  )) {
-    usage();
+    die "%Error: Bad usage, try 'verilator_difftree --help'\n";
 }

 defined $Opt_A or die "%Error: No old diff filename\n";
@@ -0,0 +1,211 @@
+: # -*-Mode: perl;-*- use perl, wherever it is
+eval 'exec perl -wS $0 ${1+"$@"}'
+  if 0;
+# $Id$
+######################################################################
+#
+# Copyright 2007-2007 by Wilson Snyder <[email protected]>.  This
+# program is free software; you can redistribute it and/or modify it under
+# the terms of either the GNU Lesser General Public License or the Perl
+# Artistic License.
+#
+# This program 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 General Public License for more details.
+#
+######################################################################
+
+require 5.006_001;
+use warnings;
+use Getopt::Long;
+use IO::File;
+use Pod::Usage;
+use strict;
+use vars qw ($Debug);
+
+#======================================================================
+
+
+#======================================================================
+# main
+
+$Debug = 0;
+my $Opt_File;
+autoflush STDOUT 1;
+autoflush STDERR 1;
+Getopt::Long::config ("no_auto_abbrev");
+if (! GetOptions (
+		  "help"	=> \&usage,
+		  "debug"	=> \&debug,
+		  "<>"		=> \&parameter,
+		  )) {
+    die "%Error: Bad usage, try 'verilator_profcfunc --help'\n";
+}
+
+defined $Opt_File or die "%Error: No filename given\n";
+
+profcfunc($Opt_File);
+
+#----------------------------------------------------------------------
+
+sub usage {
+    print '$Id$ ', "\n";
+    pod2usage(-verbose=>2, -exitval => 2);
+    exit (1);
+}
+
+sub debug {
+    $Debug = 1;
+}
+
+sub parameter {
+    my $param = shift;
+    if (!defined $Opt_File) {
+	$Opt_File = $param;
+    } else {	
+	die "%Error: Unknown parameter: $param\n";
+    }
+}
+
+#######################################################################
+
+sub profcfunc {
+    my $filename = shift;
+    # Remove hex numbers before diffing
+    my $fh = IO::File->new ($filename) or die "%Error: $! $filename,";
+
+    my %funcs;
+
+    while (defined (my $line=$fh->getline())) {
+	if ($line =~ /^\s*([0-9.]+)\s+[0-9.]+\s+([0-9.]+)\s+([0-9.]+)\s+.*\s+(\S+)\s*$/) {
+	    my $pct=$1; my $sec=$2; my $calls=$3; my $func=$4;
+	    $funcs{$func}{pct} += $pct;
+	    $funcs{$func}{sec} += $sec;
+	    $funcs{$func}{calls} += $calls;
+	}
+    }
+    $fh->close;
+
+    # Find modules
+    my %verilated_mods;
+    foreach my $func (keys %funcs) {
+	if ($func =~ /(.*)::_eval\(.*__Syms.*\)$/) {
+	    $verilated_mods{$1} = qr/^$1/;
+	}
+    }
+
+    # Resort by Verilog name
+    my %vfuncs;
+    my %groups;
+    foreach my $func (keys %funcs) {
+	my $vfunc = $func;
+	my $design;
+	foreach my $vde (keys %verilated_mods) {
+	    if ($func =~ /$verilated_mods{$vde}/) {
+		$design=$vde;
+		last;
+	    }
+	}
+	if ($vfunc =~ /__PROF__([a-zA-Z_0-9]+)__([0-9]+)\(/) {
+	    $vfunc     = sprintf("VBlock    %s:%d", $1, $2);
+	    $groups{"Verilog Blocks under $design"} += $funcs{$func}{pct};
+	} else {
+	    if ($design) {
+		$vfunc = sprintf("VCommon   %s", $func);
+		$groups{"Common code under $design"} += $funcs{$func}{pct};
+	    } else {
+		$vfunc = sprintf("C++       %s", $func);
+		$groups{'C++'} += $funcs{$func}{pct};
+	    }
+	}
+	$vfuncs{$vfunc} = $funcs{$func};
+    }
+
+    print("Overall summary:\n");
+    print("  % time\n");
+    foreach (sort (keys %groups)) {
+	printf("  %6.2f  In all %s\n", $groups{$_}, $_);
+    }
+    print("\n");
+
+
+    print("Verilog code profile:\n");
+    print("   These are split into three categories:\n");
+    print("      C++:     Time in non-Verilated C++ code\n");
+    print("      VBlock:  Time attributable to a block in a Verilog file and line\n");
+    print("      VCommon: Time in a Verilated module, due to all parts of the design\n");
+    print("\n");
+
+    print("  %   cumulative   self              \n");
+    print(" time   seconds   seconds    calls   type      filename and line number\n");
+
+    my $cume = 0;
+    foreach my $func (sort {$vfuncs{$b}{sec} <=> $vfuncs{$a}{sec}
+			    || $a cmp $b}
+		      (keys %vfuncs)) {
+	$cume += $vfuncs{$func}{sec};
+	printf +("%6.2f %9.2f %8.2f %8d   %s\n",
+		 $vfuncs{$func}{pct},
+		 $cume, $vfuncs{$func}{sec},
+		 $vfuncs{$func}{calls},
+		 $func);
+    }
+}
+
+#######################################################################
+__END__
+
+=pod
+
+=head1 NAME
+
+verilator_profcfunc - Read gprof report created with --profile-cfuncs
+
+=head1 SYNOPSIS
+
+  verilator --profile-cfuncs ....
+  gcc --ggdb -pg ....
+  {run executable}
+  gprof
+  verilator_profcfuncs gprof.out
+
+=head1 DESCRIPTION
+
+Verilator_profcfunc reads a profile report created by gprof.  The names of
+the functions are then transformed, assuming the user used verilator's
+--profile-cfuncs, and a report printed showing the percentage of time, etc,
+in each Verilog block.
+
+=head1 ARGUMENTS
+
+=over 4
+
+=item --help
+
+Displays this message and program version and exits.
+
+=back
+
+=head1 DISTRIBUTION
+
+The latest version is available from L<http://www.veripool.com/>.
+
+Copyright 2007-2007 by Wilson Snyder.  This package is free software; you
+can redistribute it and/or modify it under the terms of either the GNU
+Lesser General Public License or the Perl Artistic License.
+
+=head1 AUTHORS
+
+Wilson Snyder <[email protected]>
+
+=head1 SEE ALSO
+
+C<verilator>
+
+=cut
+
+######################################################################
+### Local Variables:
+### compile-command: "$V4/bin/verilator_profcfunc  $V4/test_c/obj_dir/V*_03_*.tree $V4N/test_c/obj_dir/V*_03_*.tree"
+### End:
@@ -16,8 +16,17 @@ AC_PROG_CC
 AC_PROG_CXX
 AC_PROG_INSTALL
 AC_PATH_PROG(PERL,perl)
-AC_PATH_PROG(YACC,bison)
+if test "x$PERL" = "x" ; then
+   AC_MSG_ERROR([Cannot find "perl" in your PATH, please install it])
+fi
 AC_PATH_PROG(LEX,flex)
+if test "x$LEX" = "x" ; then
+   AC_MSG_ERROR([Cannot find "flex" in your PATH, please install it])
+fi
+AC_PATH_PROG(YACC,bison)
+if test "x$YACC" = "x" ; then
+   AC_MSG_ERROR([Cannot find "bison" in your PATH, please install it])
+fi

 dnl Checks for libraries.

@@ -3,7 +3,7 @@
 //
 // Copyright 2003-2007 by Wilson Snyder. This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
-// General Public License or the Perl Artistic License.
+// Lesser General Public License or the Perl Artistic License.
 //
 // Verilator is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -31,7 +31,7 @@
 //===========================================================================
 // Global variables

-int  Verilated::s_randReset = false;
+int  Verilated::s_randReset = 0;
 int  Verilated::s_debug = 1;
 bool Verilated::s_calcUnusedSigs = false;
 bool Verilated::s_gotFinish = false;
@@ -3,7 +3,7 @@
 //
 // Copyright 2003-2007 by Wilson Snyder. This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
-// General Public License or the Perl Artistic License.
+// Lesser General Public License or the Perl Artistic License.
 //
 // Verilator is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -4,7 +4,7 @@
 #
 # Copyright 2003-2007 by Wilson Snyder. This program is free software; you can
 # redistribute it and/or modify it under the terms of either the GNU
-# General Public License or the Perl Artistic License.
+# Lesser General Public License or the Perl Artistic License.
 ######################################################################

 PERL = @PERL@
@@ -7,7 +7,7 @@
 //
 // Copyright 2003-2007 by Wilson Snyder. This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
-// General Public License or the Perl Artistic License.
+// Lesser General Public License or the Perl Artistic License.
 //
 // This is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -3,7 +3,7 @@
 //
 // Copyright 2003-2007 by Wilson Snyder. This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
-// General Public License or the Perl Artistic License.
+// Lesser General Public License or the Perl Artistic License.
 //
 // Verilator is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -0,0 +1,67 @@
+#!/usr/bin/perl -w
+#$Id$
+######################################################################
+#
+# Copyright 2007-2007 by Wilson Snyder.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of either the GNU General Public License or the
+# Perl Artistic License.
+# 
+# This program 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 General Public License for more details.
+# 
+# You should have received a copy of the Perl Artistic License
+# along with this module; see the file COPYING.  If not, see
+# www.cpan.org
+#                                                                           
+######################################################################
+
+# DESCRIPTION: Debugging of bison output
+
+use strict;
+
+my $Debug;
+
+my %declared;
+my %used;
+
+my $body = 0;
+my $rule = "";
+my $lineno = 0;
+foreach my $line (<STDIN>) {
+    $lineno++;
+    chomp $line;
+    $line =~ s!//.*$!!g;
+    $line =~ s!\s+! !g;
+    next if $line eq '';
+    if ($line =~ m!^\%\%!) {
+	$body++;
+    } elsif ($body == 1) {
+	$rule .= $line;
+	if ($line =~ m!^\s*;\s*$!) {
+	    #print "Rule: $rule\n";
+	    ($rule =~ /^([a-zA-Z0-9_]+):(.*)$/) or die "%Error: No rule name: $1\n";
+	    my $rulename = $1; my $preaction = $2;
+	    $declared{$rulename} = $lineno;
+	    $preaction =~ s/\{[^\}]*\}/ /g;
+	    #print "RULEN $rulename PA $preaction\n" if $Debug;
+	    $rule = '';
+	    foreach my $ref (split /\s+/, $preaction) {
+		next if $ref !~ /^[a-zA-Z]/;
+		next if $ref eq $rulename;
+		if (!$used{$ref} && $declared{$ref}) {
+		    print "   %Warning: $lineno: $ref used by $rulename after declaration\n";
+		}
+		$used{$ref} = $lineno;
+		print "  ref $ref\n" if $Debug;
+	    }
+	}
+    }
+}
+
+# Local Variables:
+# compile-command: "./bisonreader < verilog.y"
+# End:
@@ -63,6 +63,9 @@ private:
 	AstNode* timesp = nodep->exprsp(); if (timesp) timesp->unlinkFrBack();
 	timesp = timesp->addNext(new AstTime(nodep->fileline()));
 	nodep->exprsp(timesp);
+	if (!nodep->scopeNamep() && nodep->name().find("%m") != string::npos) {
+	    nodep->scopeNamep(new AstScopeName(nodep->fileline()));
+	}
    }

    AstNode* newIfAssertOn(AstNode* nodep) {
@@ -999,7 +999,7 @@ private:
    AstNodeFTask*	m_taskp;	// [AfterLink] Pointer to task referenced
    string		m_name;		// Name of variable
    string		m_dotted;	// Dotted part of scope to task or ""
-    string		m_inlinedDots;	// Dotted hiearchy flattened out
+    string		m_inlinedDots;	// Dotted hierarchy flattened out
 public:
    AstNodeFTaskRef(FileLine* fl, AstNode* namep, AstNode* pinsp)
 	:AstNode(fl)
@@ -421,7 +421,7 @@ struct AstScope : public AstNode {
 private:
    string	m_name;		// Name
    AstScope*	m_aboveScopep;	// Scope above this one in the hierarchy (NULL if top)
-    AstCell*	m_aboveCellp;	// Cell above this in the hiearchy (NULL if top)
+    AstCell*	m_aboveCellp;	// Cell above this in the hierarchy (NULL if top)
    AstModule*	m_modp;		// Module scope corresponds to
 public:
    AstScope(FileLine* fl, AstModule* modp, const string& name,
@@ -540,7 +540,7 @@ struct AstVarXRef : public AstNodeVarRef {
    // Includes pin on a cell, as part of a ASSIGN statement to connect I/Os until AstScope
 private:
    string	m_dotted;	// Scope name to connected to
-    string	m_inlinedDots;	// Dotted hiearchy flattened out
+    string	m_inlinedDots;	// Dotted hierarchy flattened out
 public:
    AstVarXRef(FileLine* fl, const string& name, const string& dotted, bool lvalue)
 	:AstNodeVarRef(fl, name, NULL, lvalue)
@@ -1271,11 +1271,8 @@ public:
    bool	addNewline() const { return displayType().addNewline(); }  // * = Add a newline for $display
    AstNode*	filep() const { return op2p(); }
    void 	filep(AstNodeVarRef* nodep) { setNOp2p(nodep); }
-    AstNode*	scopeAttrp() const { return op3p(); }
-    AstText*	scopeTextp() const { return op3p()->castText(); }
-    void scopeAttrp(AstNode* nodep) { addOp3p(nodep); }
-    bool	needScopeTracking() { return (displayType().needScopeTracking()
-					      || name().find("%m") != string::npos); }
+    AstScopeName* scopeNamep() const { return op3p()->castScopeName(); }
+    void 	scopeNamep(AstNode* nodep) { setNOp3p(nodep); }
 };

 struct AstFClose : public AstNodeStmt {
@@ -1726,6 +1723,22 @@ public:
    int		dimension() const { return m_dimension; }
 };

+struct AstScopeName : public AstNode {
+    // For display %m
+    // Parents:  DISPLAY
+    // Children: TEXT
+    AstScopeName(FileLine* fl)
+	: AstNode(fl) {}
+    virtual ~AstScopeName() {}
+    virtual AstType type() const { return AstType::SCOPENAME;}
+    virtual AstNode* clone() { return new AstScopeName(*this); }
+    virtual void accept(AstNVisitor& v, AstNUser* vup=NULL) { v.visit(this,vup); }
+    virtual V3Hash sameHash() const { return V3Hash(); }
+    virtual bool same(AstNode* samep) const { return true; }
+    AstText*	scopeAttrp() const { return op1p()->castText(); }
+    void 	scopeAttrp(AstNode* nodep) { addOp1p(nodep); }
+};
+
 //======================================================================
 // non-ary ops

@@ -131,10 +131,10 @@ private:
 	nodep->replaceWith(newp);
 	nodep->deleteTree(); nodep=NULL;
    }
-    virtual void visit(AstDisplay* nodep, AstNUser*) {
+    virtual void visit(AstScopeName* nodep, AstNUser*) {
 	// If there's a %m in the display text, we add a special node that will contain the name()
 	// Similar code in V3Inline
-	if (m_beginScope != "" && nodep->needScopeTracking()) {
+	if (m_beginScope != "") {
 	    // To keep correct visual order, must add before other Text's
 	    AstNode* afterp = nodep->scopeAttrp();
 	    if (afterp) afterp->unlinkFrBackWithNext();
@@ -62,9 +62,6 @@ private:
    //int debug() { return 9; }

    virtual void visit(AstNodeCase* nodep, AstNUser*) {
-	// We report a syntax error on empty "case (x) endcase" blocks, so never no items at all
-	if (!nodep->itemsp()) nodep->v3fatalSrc("No items (not even default) under case statement?\n");
-
 	// Detect multiple defaults
 	bool hitDefault = false;
 	for (AstCaseItem* itemp = nodep->itemsp(); itemp; itemp=itemp->nextp()->castCaseItem()) {
@@ -196,6 +196,9 @@ private:
    virtual void visit(AstText* nodep, AstNUser*) {
 	setClean (nodep, true);
    }
+    virtual void visit(AstScopeName* nodep, AstNUser*) {
+	setClean (nodep, true);
+    }
    virtual void visit(AstSel* nodep, AstNUser*) {
 	operandTriop(nodep);
        setClean (nodep, nodep->cleanOut());
@@ -802,7 +802,12 @@ private:
 	if (nodep->sensp()->castConst()
 	    || (nodep->varrefp() && nodep->varrefp()->varp()->isParam())) {
 	    // Constants in sensitivity lists may be removed (we'll simplify later)
-	    AstSenItem* newp = new AstSenItem(nodep->fileline(), AstSenItem::Never());
+	    AstSenItem* newp;
+	    if (nodep->isClocked()) {  // A constant can never get a pos/negexge
+		newp = new AstSenItem(nodep->fileline(), AstSenItem::Never());
+	    } else {  // Otherwise it may compute a result that needs to settle out
+		newp = new AstSenItem(nodep->fileline(), AstSenItem::Combo());
+	    }
 	    nodep->replaceWith(newp);
 	    nodep->deleteTree(); nodep=NULL;
 	} else if (nodep->sensp()->castNot()) {
@@ -938,6 +943,63 @@ private:
 	}
    }

+    virtual void visit(AstDisplay* nodep, AstNUser*) {
+	// Substitute constants into displays.  The main point of this is to
+	// simplify assertion methodologies which call functions with display's.
+	// This eliminates a pile of wide temps, and makes the C a whole lot more readable.
+	nodep->iterateChildren(*this);
+	bool anyconst = false;
+	for (AstNode* argp = nodep->exprsp(); argp; argp=argp->nextp()) {
+	    if (argp->castConst()) { anyconst=true; break; }
+	}
+	if (anyconst) {
+	    //UINFO(9,"  Display in  "<<nodep->text()<<endl);
+	    string dispout = "";
+	    string fmt = "";
+	    bool inPct = false;
+	    AstNode* argp = nodep->exprsp();
+	    for (const char* inp = nodep->text().c_str(); *inp; inp++) {
+		char ch = *inp;   // Breaks with iterators...
+		if (!inPct && ch=='%') {
+		    inPct = true;
+		    fmt = ch;
+		} else if (inPct && isdigit(ch)) {
+		    fmt += ch;
+		} else if (inPct) {
+		    inPct = false;
+		    fmt += ch;
+		    switch (tolower(ch)) {
+		    case '%': break;  // %% - just output a %
+		    case 'm': break;  // %m - auto insert "name"
+		    default:  // Most operators, just move to next argument
+			if (argp) {
+			    AstNode* nextp=argp->nextp();
+			    if (argp && argp->castConst()) { // Convert it
+				string out = argp->castConst()->num().displayed(fmt);
+				UINFO(9,"     DispConst: "<<fmt<<" -> "<<out<<"  for "<<argp<<endl);
+				{   // fmt = out w/ replace % with %% as it must be literal.
+				    fmt = "";
+				    for (string::iterator pos = out.begin(); pos != out.end(); pos++) {
+					if (*pos == '%') fmt += '%';
+					fmt += *pos;
+				    }
+				}
+				argp->unlinkFrBack()->deleteTree();
+			    }
+			    argp=nextp;
+			}
+			break;
+		    } // switch
+		    dispout += fmt;
+		} else {
+		    dispout += ch;
+		}
+	    }
+	    nodep->text(dispout);
+	    //UINFO(9,"  Display out "<<nodep->text()<<endl);
+	}
+    }
+
    virtual void visit(AstWhile* nodep, AstNUser*) {
 	nodep->iterateChildren(*this);
 	if (nodep->condp()->isZero()) {
@@ -388,7 +388,7 @@ public:
    }
    virtual void visit(AstMulS* nodep, AstNUser* vup) {
 	if (nodep->widthWords() > VL_MULS_MAX_WORDS) {
-	    nodep->v3error("Signed multiply of "<<nodep->width()<<" bits exceeds hardcoded limit VL_MULS_MAX_WORDS in verilatedos.h\n");
+	    nodep->v3error("Unsupported: Signed multiply of "<<nodep->width()<<" bits exceeds hardcoded limit VL_MULS_MAX_WORDS in verilatedos.h\n");
 	}
 	visit(nodep->castNodeBiop(), vup);
    }
@@ -1052,16 +1052,17 @@ void EmitCStmts::visit(AstDisplay* nodep, AstNUser*) {
 		// Spec: h d o b c l
 		case 'b': displayArg(nodep,&elistp,fmt,'b'); break;
 		case 'c': displayArg(nodep,&elistp,fmt,'c'); break;
+		case 't':
 		case 'd': displayArg(nodep,&elistp,fmt,'u'); break;  // Unsigned decimal
 		case 'o': displayArg(nodep,&elistp,fmt,'o'); break;
 		case 'h':
 		case 'x': displayArg(nodep,&elistp,fmt,'x'); break;
 		case 's': displayArg(nodep,&elistp,fmt,'s'); break;
-		case 't': displayArg(nodep,&elistp,fmt,'u'); break;
 		case 'm': {
 		    emitDispState.pushFormat("%s");
 		    emitDispState.pushArg(NULL, "vlSymsp->name(");
-		    for (AstText* textp=nodep->scopeTextp(); textp; textp=textp->nextp()->castText()) {
+		    if (!nodep->scopeNamep()) nodep->v3fatalSrc("Display with %m but no AstScopeName");
+		    for (AstText* textp=nodep->scopeNamep()->scopeAttrp(); textp; textp=textp->nextp()->castText()) {
 			emitDispState.pushFormat(textp->text());
 		    }
 		    break;
@@ -246,6 +246,8 @@ public:
    virtual void visit(AstText* nodep, AstNUser*) {
 	ofp()->putsNoTracking(nodep->text());
    }
+    virtual void visit(AstScopeName* nodep, AstNUser*) {
+    }
    virtual void visit(AstCStmt* nodep, AstNUser*) {
 	putbs("$_CSTMT(");
 	nodep->bodysp()->iterateAndNext(*this);
@@ -34,7 +34,8 @@

 FileLine FileLine::s_defaultFileLine = FileLine(EmptySecret());

-int V3Error::s_errcnt = 0;
+int V3Error::s_errCount = 0;
+int V3Error::s_warnCount = 0;
 int V3Error::s_debugDefault = 0;
 ostringstream V3Error::s_errorStr;		// Error string being formed
 V3ErrorCode V3Error::s_errorCode = V3ErrorCode::FATAL;
@@ -187,25 +188,46 @@ string V3Error::lineStr (const char* filename, int lineno) {
    return out.str();
 }

+void V3Error::incWarnings() {
+    s_warnCount++;
+    if (errorOrWarnCount() == MAX_ERRORS) {  // Not >= as would otherwise recurse
+	v3fatal ("Exiting due to too many errors encountered\n");
+    }
+}
+
 void V3Error::incErrors() {
-    s_errcnt++;
-    if (errorCount() == MAX_ERRORS) {  // Not >= as would otherwise recurse
+    s_errCount++;
+    if (errorOrWarnCount() == MAX_ERRORS) {  // Not >= as would otherwise recurse
 	v3fatal ("Exiting due to too many errors encountered\n");
    }
 }

 void V3Error::abortIfErrors() {
    if (errorCount()) {
-	v3fatal ("Exiting due to "<<dec<<errorCount()<<" warning(s)\n");
+	v3fatal ("Exiting due to "<<dec<<errorOrWarnCount()<<" warning(s)\n");
    }
 }

+void V3Error::abortIfWarnings() {
+    if (errorOrWarnCount()) {
+	v3fatal ("Exiting due to "<<dec<<errorOrWarnCount()<<" warning(s)\n");
+    }
+}
+
+bool V3Error::isError(V3ErrorCode code) {
+    if (code==V3ErrorCode::SUPPRESS) return false;
+    else if (code==V3ErrorCode::FATAL) return true;
+    else if (code==V3ErrorCode::ERROR) return true;
+    else if (code<V3ErrorCode::FIRST_WARN
+	     || s_pretendError[code]) return true;
+    else return false;
+}
+
 string V3Error::msgPrefix(V3ErrorCode code) {
    if (code==V3ErrorCode::SUPPRESS) return "-arning-suppressed: ";
    else if (code==V3ErrorCode::FATAL) return "%Error: ";
    else if (code==V3ErrorCode::ERROR) return "%Error: ";
-    else if (code<V3ErrorCode::FIRST_WARN
-	     || s_pretendError[code]) return "%Error-"+(string)code.ascii()+": ";
+    else if (isError(code)) return "%Error-"+(string)code.ascii()+": ";
    else return "%Warning-"+(string)code.ascii()+": ";
 }

@@ -258,7 +280,8 @@ void V3Error::v3errorEnd (ostringstream& sstr) {
 		    cerr<<msgPrefix()<<"else you may end up with different sim results."<<endl;
 		}
 	    }
-	    incErrors();
+	    if (isError(s_errorCode)) incErrors();
+	    else incWarnings();
 	    if (s_errorCode==V3ErrorCode::FATAL) {
 		static bool inFatal = false;
 		if (!inFatal) {
@@ -104,11 +104,13 @@ class V3Error {
    static bool 	s_describedEachWarn[V3ErrorCode::MAX]; // Told user specifics about this warning
    static bool 	s_pretendError[V3ErrorCode::MAX]; // Pretend this warning is an error
    static int		s_debugDefault;		// Default debugging level
-    static int		s_errcnt;		// Error count
+    static int		s_errCount;		// Error count
+    static int		s_warnCount;		// Error count
    static ostringstream s_errorStr;		// Error string being formed
    static V3ErrorCode	s_errorCode;		// Error string being formed will abort
    enum MaxErrors { 	MAX_ERRORS = 50 };	// Fatal after this may errors
    static void	incErrors();
+    static void	incWarnings();

    V3Error() { cerr<<("Static class"); abort(); }

@@ -118,12 +120,16 @@ class V3Error {
    static void		debugDefault(int level) { s_debugDefault = level; }
    static int		debugDefault() { return s_debugDefault; }
    static string	msgPrefix(V3ErrorCode code=s_errorCode);	// returns %Error/%Warn
-    static int		errorCount() { return s_errcnt; }
+    static int		errorCount() { return s_errCount; }
+    static int		warnCount() { return s_warnCount; }
+    static int		errorOrWarnCount() { return errorCount()+warnCount(); }
    // METHODS
    static void		init();
    static void		abortIfErrors();
+    static void		abortIfWarnings();
    static void		suppressThisWarning();	// Suppress next %Warn if user has it off
    static void		pretendError(V3ErrorCode code, bool flag) { s_pretendError[code]=flag; }
+    static bool		isError(V3ErrorCode code);
    static string 	v3sform (const char* format, ...);
    static string	lineStr (const char* filename, int lineno);
    static V3ErrorCode	errorCode() { return s_errorCode; }
@@ -233,10 +233,10 @@ private:
 	}
 	nodep->iterateChildren(*this);
    }
-    virtual void visit(AstDisplay* nodep, AstNUser*) {
+    virtual void visit(AstScopeName* nodep, AstNUser*) {
 	// If there's a %m in the display text, we add a special node that will contain the name()
 	// Similar code in V3Begin
-	if (m_cellp && nodep->needScopeTracking()) {
+	if (m_cellp) {
 	    // To keep correct visual order, must add before other Text's
 	    AstNode* afterp = nodep->scopeAttrp();
 	    if (afterp) afterp->unlinkFrBackWithNext();
@@ -21,7 +21,7 @@
 // LinkDot TRANSFORMATIONS:
 //	Top-down traversal
 //	    Cells:
-//		Make graph of cell hiearchy
+//		Make graph of cell hierarchy
 //	    Var/Funcs's:
 //		Collect all names into symtable under appropriate cell
 //	Top-down traversal
@@ -180,7 +180,7 @@ private:
    // TYPES
    typedef std::multimap<string,LinkDotCellVertex*> NameScopeMap;
    // MEMBERS
-    LinkDotGraph	m_graph;		// Graph of hiearchy
+    LinkDotGraph	m_graph;		// Graph of hierarchy
    NameScopeMap	m_nameScopeMap;		// Hash of scope referenced by non-pretty textual name
    bool		m_forPrearray;		// Compress cell__[array] refs
    bool		m_forScopeCreation;	// Remove VarXRefs for V3Scope
@@ -277,7 +277,7 @@ private:
 public:
    LinkDotBaseVertex* findDotted(LinkDotBaseVertex* cellVxp, const string& dotname,
 				  string& baddot, LinkDotBaseVertex*& okVxp) {
-	// Given a dotted hiearchy name, return where in scope it is
+	// Given a dotted hierarchy name, return where in scope it is
 	// Note when dotname=="" we just fall through and return cellVxp
 	UINFO(8,"    dottedFind "<<dotname<<endl);
 	bool firstId = true;
@@ -520,8 +520,8 @@ private:
    virtual void visit(AstScope* nodep, AstNUser*) {
 	UINFO(8,"  SCOPE "<<nodep<<endl);
 	if (!m_statep->forScopeCreation()) v3fatalSrc("Scopes should only exist right after V3Scope");
-	// Using the CELL names, we created all hiearchy.  We now need to match this Scope
-	// up with the hiearchy created by the CELL names.
+	// Using the CELL names, we created all hierarchy.  We now need to match this Scope
+	// up with the hierarchy created by the CELL names.
 	m_cellVxp = m_statep->findScope(nodep);
 	nodep->iterateChildren(*this);
 	m_cellVxp = NULL;
@@ -610,7 +610,7 @@ private:
 	UINFO(8,"     "<<nodep<<endl);
 	if (!m_cellVxp) {
 	    UINFO(9,"Dead module for "<<nodep<<endl);
-	    nodep->varp(NULL);  // Module that is not in hiearchy.  We'll be dead code eliminating it later.
+	    nodep->varp(NULL);  // Module that is not in hierarchy.  We'll be dead code eliminating it later.
 	} else {
 	    string baddot;
 	    LinkDotBaseVertex* okVxp;
@@ -657,7 +657,7 @@ private:
 	UINFO(8,"     "<<nodep<<endl);
 	if (!m_cellVxp) {
 	    UINFO(9,"Dead module for "<<nodep<<endl);
-	    nodep->taskp(NULL);  // Module that is not in hiearchy.  We'll be dead code eliminating it later.
+	    nodep->taskp(NULL);  // Module that is not in hierarchy.  We'll be dead code eliminating it later.
 	} else {
 	    string baddot;
 	    LinkDotBaseVertex* okVxp;
@@ -335,6 +335,10 @@ private:
 		|| nodep->displayType() == AstDisplayType::FATAL)) {
 	    nodep->v3error(nodep->verilogKwd()+" only allowed under a assertion.");
 	}
+	if (nodep->displayType().needScopeTracking()
+	    || nodep->name().find("%m") != string::npos) {
+	    nodep->scopeNamep(new AstScopeName(nodep->fileline()));
+	}
    }

    virtual void visit(AstScCtor* nodep, AstNUser*) {
@@ -303,7 +303,7 @@ V3Number& V3Number::setMask(int nbits) {
 }

 //======================================================================
-// ACCESSORS
+// ACCESSORS - as strings

 string V3Number::ascii(bool prefixed, bool cleanVerilog) const {
    ostringstream out;
@@ -334,34 +334,115 @@ string V3Number::ascii(bool prefixed, bool cleanVerilog) const {
    
    if (binary) {
 	out<<"b";
-	int bit=width()-1;
-	while (bit && bitIs0(bit)) bit--;
-	for(; bit>=0; --bit) {
-	    if (bitIs0(bit)) out<<'0';
-	    else if (bitIs1(bit)) out<<'1';
-	    else if (bitIsZ(bit)) out<<'z';
-	    else out<<'x';
-	}
+	out<<displayed("%0b");
    }
    else {
 	if (prefixed) out<<"h";
 	// Always deal with 4 bits at once.  Note no 4-state, it's above.
-	int hexStart = width()-1;
-	while (hexStart && bitIs0(hexStart)) hexStart--;
-	while ((hexStart&3)!=3) hexStart++;
-	for(int bit=hexStart; bit>0; ) {
-	    int v = 0;
-	    if (bitIs1(bit)) v |= 8; bit--;
-	    if (bitIs1(bit)) v |= 4; bit--;
-	    if (bitIs1(bit)) v |= 2; bit--;
-	    if (bitIs1(bit)) v |= 1; bit--;
-	    if (v>=10) out<<(char)('a'+v-10);
-	    else out<<(char)('0'+v);
-	}
+	out<<displayed("%0h");
    }
    return out.str();
 }

+string V3Number::displayed(const string& vformat) const {
+    string::const_iterator pos = vformat.begin();
+    UASSERT(pos != vformat.end() && pos[0]=='%', "display with non format argument "<<*this);
+    pos++;
+    string fmtsize;
+    for (; pos != vformat.end() && isdigit(pos[0]); pos++) {
+	fmtsize += pos[0];
+    }
+    string str;
+    char code = tolower(pos[0]);
+    switch (code) {
+    case 'b': {
+	int bit = width()-1;
+	if (fmtsize == "0") while (bit && bitIs0(bit)) bit--;
+	for (; bit>=0; bit--) {
+	    if (bitIs0(bit)) str+='0';
+	    else if (bitIs1(bit)) str+='1';
+	    else if (bitIsZ(bit)) str+='z';
+	    else str+='x';
+	}
+	return str;
+    }
+    case 'o': {
+	int bit = width()-1;
+	if (fmtsize == "0") while (bit && bitIs0(bit)) bit--;
+	while ((bit%3)!=2) bit++;
+	for (; bit>0; bit -= 3) {
+	    int v = bitsValue(bit-2, 3);
+	    str += (char)('0'+v);
+	}
+	return str;
+    }
+    case 'h':
+    case 'x': {
+	int bit = width()-1;
+	if (fmtsize == "0") while (bit && bitIs0(bit)) bit--;
+	while ((bit%4)!=3) bit++;
+	for (; bit>0; bit -= 4) {
+	    int v = bitsValue(bit-3, 4);
+	    if (v>=10) str += (char)('a'+v-10);
+	    else str += (char)('0'+v);
+	}
+	return str;
+    }
+    case 'c': {
+	if (this->width()>8) m_fileline->v3error("$display of char format of > 8 bit value");
+	int v = bitsValue(0, 8);
+	str += (char)(v);
+	return str;
+    }
+    case 's': {
+	// Spec says always drop leading zeros, this isn't quite right, we space pad.
+	int bit=this->width()-1;
+	bool start=true;
+	while ((bit%8)!=7) bit++;
+	for (; bit>=0; bit -= 8) {
+	    int v = bitsValue(bit-7, 8);
+	    if (!start || v) {
+		str += (char)((v==0)?' ':v);
+		start = false;	// Drop leading 0s
+	    } else {
+		if (fmtsize != "0") str += ' ';
+	    }
+	}
+	return str;
+    }
+    case '~': // Signed decimal
+    case 't':
+    case 'd': { // Unsigned decimal
+	bool issigned = (code == '~');
+	if (fmtsize == "") {
+	    double mantissabits = this->width() - (issigned?1:0);
+	    double maxval = pow(2.0, mantissabits);
+	    double dchars = log10(maxval)+1.0;
+	    if (issigned) dchars++;  // space for sign
+	    fmtsize = cvtToStr(int(dchars));
+	}
+	if (width() > 64) {
+	    m_fileline->v3error("Unsupported: $display of dec format of > 64 bit results (use hex format instead)");
+	    return "ERR";
+	}
+	if (issigned) {
+	    str = cvtToStr(asSQuad());
+	} else {
+	    str = cvtToStr(asQuad());
+	}
+	int intfmtsize = atoi(fmtsize.c_str());
+	while ((int)(str.length()) < intfmtsize) str = " "+str;
+	return str;
+    }
+    default:
+	m_fileline->v3fatalSrc("Unknown $display format code for number: %"<<pos[0]);
+	return "ERR";
+    }
+}
+
+//======================================================================
+// ACCESSORS - as numbers
+
 uint32_t V3Number::asInt() const {
    UASSERT(!isFourState(),"asInt with 4-state "<<*this);
    UASSERT((width()<33 || (width()<65 && m_value[1]==0)), "Value too wide "<<*this);
@@ -369,18 +450,24 @@ uint32_t V3Number::asInt() const {
 }

 vlsint32_t V3Number::asSInt() const {
-    UASSERT(!isFourState(),"asSInt with 4-state "<<*this);
-    UASSERT((width()<33 || (width()<65 && m_value[1]==0)), "Value too wide "<<*this);
-    uint32_t signExtend = (-((m_value[0]) & (1UL<<(width()-1))));
-    uint32_t extended = m_value[0] | signExtend;
+    uint32_t v = asInt();
+    uint32_t signExtend = (-(v & (1UL<<(width()-1))));
+    uint32_t extended = v | signExtend;
    return (vlsint32_t)(extended);
 }

 vluint64_t V3Number::asQuad() const {
    UASSERT(!isFourState(),"asQuad with 4-state "<<*this);
    UASSERT(width()<65, "Value too wide "<<*this);
-    if (width()<=32) return ((vluint64_t)m_value[0]);
-    else return ((vluint64_t)m_value[1]<<VL_ULL(32)) | ((vluint64_t)m_value[0]);
+    if (width()<=32) return ((vluint64_t)(asInt()));
+    return ((vluint64_t)m_value[1]<<VL_ULL(32)) | ((vluint64_t)m_value[0]);
+}
+
+vlsint64_t V3Number::asSQuad() const {
+    vluint64_t v = asQuad();
+    vluint64_t signExtend = (-(v & (VL_ULL(1)<<(width()-1))));
+    vluint64_t extended = v | signExtend;
+    return (vlsint64_t)(extended);
 }

 uint32_t V3Number::asHash() const {
@@ -94,6 +94,12 @@ private:
    bool bitIsZ (int bit) const {
 	if (bit>=m_width) return bitIsZ(m_width-1);
 	return ( (~m_value[bit/32] & (1UL<<(bit&31))) && (m_valueX[bit/32] & (1UL<<(bit&31))) ); }
+    uint32_t bitsValue(int lsb, int nbits) const {
+	uint32_t v=0;
+	for (int bitn=0; bitn<nbits; bitn++) { v |= (bitIs1(lsb+bitn)<<bitn); }
+	return v;
+    }
+
    int words() const { return ((width()+31)/32); }

 public:
@@ -112,6 +118,7 @@ public:

    // ACCESSORS
    string ascii(bool prefixed=true, bool cleanVerilog=false) const;
+    string displayed(const string& format) const;
    int width() const { return m_width; }
    int minWidth() const;	// Minimum width that can represent this number (~== log2(num)+1)
    bool sized() const { return m_sized; }
@@ -129,6 +136,7 @@ public:
    uint32_t asInt() const;
    vlsint32_t asSInt() const;
    vluint64_t asQuad() const;
+    vlsint64_t asSQuad() const;
    uint32_t asHash() const;
    uint32_t dataWord(int word) const;
    uint32_t countOnes() const;
@@ -40,6 +40,7 @@
 #define VP_DEFINE	261
 #define VP_ELSE		262
 #define VP_ELSIF	263
+#define VP_LINE		264

 #define VP_SYMBOL	300
 #define VP_STRING	301
@@ -57,6 +57,9 @@ static void pslMoreNeeded(bool flag) { V3PreLex::s_currentLexp->m_pslMoreNeeded
 %x DEFMODE
 %x ARGMODE
 %x INCMODE
+%x PRTMODE
+
+/* drop: Drop Ctrl-Z - can't pass thru or may EOF the output too soon */

 ws		[ \t\f\r]
 wsn		[ \t\f]
@@ -64,12 +67,14 @@ crnl		[\r]*[\n]
 quote		[\"]
 backslash	[\\]
 symb		[a-zA-Z_][a-zA-Z0-9_$]*
+drop		[\032]
 psl		[p]sl

 	/**************************************************************/
 %%

-<INITIAL>^{ws}*"`line"{ws}+.*{crnl}	{ V3PreLex::s_currentLexp->lineDirective(yytext); }
+<INITIAL>^{ws}*"`line"{ws}+.*{crnl}	{ V3PreLex::s_currentLexp->lineDirective(yytext);
+					  return(VP_LINE); }

 	/* Special directives we recognise */
 <INITIAL>"`include"	{ return(VP_INCLUDE); }
@@ -103,6 +108,13 @@ psl		[p]sl
 			  if (V3PreLex::s_currentLexp->m_parenLevel) appendDefValue(yytext,yyleng);
 			  else return (VP_STRING); }

+	/* Protected blocks */
+<INITIAL>"`protected"	{ yy_push_state(PRTMODE); yymore(); }
+<PRTMODE><<EOF>>	{ linenoInc(); yyerror("EOF in `protected"); yyleng=0; yyterminate(); }
+<PRTMODE>{crnl}		{ linenoInc(); yymore(); }
+<PRTMODE>.	 	{ yymore(); }
+<PRTMODE>"`endprotected" { yy_pop_state(); return (VP_TEXT); }
+
 	/* Pass-through include <> filenames */
 <INCMODE><<EOF>>	{ linenoInc(); yyerror("EOF in unterminated include filename"); yyleng=0; yyterminate(); }
 <INCMODE>{crnl}		{ linenoInc(); yyerror("Unterminated include filename"); BEGIN(INITIAL); }
@@ -113,6 +125,7 @@ psl		[p]sl
 	/* Reading definition */
 <DEFMODE>"/*"		{ yy_push_state(CMTMODE); yymore(); }
 <DEFMODE>"//"[^\n\r]*	{ return (VP_COMMENT);}
+<DEFMODE>{drop}		{ }
 <DEFMODE><<EOF>>	{ linenoInc(); yyerror("EOF (missing return?) in define value"); yyleng=0; yyterminate(); }
 <DEFMODE>{crnl}		{ linenoInc(); yy_pop_state(); yytext="\n"; yyleng=1; return (VP_DEFVALUE); }
 <DEFMODE>[\\]{crnl}	{ linenoInc(); appendDefValue("\n",1); } /* Include return so can maintain output line count */
@@ -123,6 +136,7 @@ psl		[p]sl
 	/* Define arguments */
 <ARGMODE>"/*"		{ yy_push_state(CMTMODE); yymore(); }
 <ARGMODE>"//"[^\n\r]*	{ return (VP_COMMENT);}
+<ARGMODE>{drop}		{ }
 <ARGMODE><<EOF>>	{ yyerror("EOF in define argument list\n"); yyleng = 0; yyterminate(); }
 <ARGMODE>{crnl}		{ linenoInc(); yytext="\n"; yyleng=1; return(VP_WHITE); }
 <ARGMODE>{quote}	{ yy_push_state(STRMODE); yymore(); }
@@ -179,8 +193,9 @@ psl		[p]sl
 	/* Generics */
 <INITIAL,PSLMULM>{crnl}		{ linenoInc(); yytext="\n"; yyleng=1; return(VP_WHITE); }
 <INITIAL,PSLMULM,PSLONEM>{symb}	{ return (VP_SYMBOL); }
-<INITIAL,PSLMULM,PSLONEM>[\r]	{ }
 <INITIAL,PSLMULM,PSLONEM>{wsn}+	{ return (VP_WHITE); }
+<INITIAL,PSLMULM,PSLONEM>{drop}	{ }
+<INITIAL,PSLMULM,PSLONEM>[\r]	{ }
 <INITIAL,PSLMULM,PSLONEM>.	{ return (VP_TEXT); }
 %%

@@ -328,6 +328,7 @@ const char* V3PreProcImp::tokenName(int tok) {
    case VP_DEFINE	: return("DEFINE");
    case VP_ELSE	: return("ELSE");	
    case VP_ELSIF	: return("ELSIF");	
+    case VP_LINE	: return("LINE");	
    case VP_SYMBOL	: return("SYMBOL");
    case VP_STRING	: return("STRING");
    case VP_DEFVALUE	: return("DEFVALUE");
@@ -583,6 +584,10 @@ int V3PreProcImp::getToken() {
 	    for (int len=0; len<yyleng; len++) { if (yytext[len]=='\n') m_lineAdd++; }
 	    goto next_tok;
 	}
+	if (tok==VP_LINE) {
+	    addLineComment(0);
+	    goto next_tok;
+	}
 	// Deal with some special parser states
 	switch (m_state) {
 	case ps_TOP: {
@@ -61,12 +61,6 @@ protected:
 	    s_preprocp->define(prefl,"verilator3", "1");
 	    s_preprocp->define(prefl,"systemc_clock", "/*verilator systemc_clock*/");
 	    s_preprocp->define(prefl,"coverage_block_off", "/*verilator coverage_block_off*/");
-	    // Standards - We ignore
-	    s_preprocp->define(prefl,"endcelldefine", "");
-	    s_preprocp->define(prefl,"celldefine", "");
-	    s_preprocp->define(prefl,"resetall", "");
-	    s_preprocp->define(prefl,"portcoerce", "");
-	    s_preprocp->define(prefl,"inline", "");
 	}
    }

@@ -38,7 +38,8 @@ class V3Read {
    V3Lexer*	m_lexerp;	// Current FlexLexer
    static V3Read*	s_readp;	// Current THIS, bison() isn't class based
    FileLine*	m_fileline;	// Filename/linenumber currently active
-    bool	m_inLibrary;	// Currently reading a library vs. regular file
+    bool	m_inCellDefine;		// Inside a `celldefine
+    bool	m_inLibrary;		// Currently reading a library vs. regular file
    int		m_inBeginKwd;		// Inside a `begin_keywords
    int		m_lastVerilogState;	// Last LEX state in `begin_keywords
    deque<string*> m_stringps;		// Created strings for later cleanup
@@ -92,6 +93,8 @@ public: // But for internal use only
    static FileLine* fileline() { return s_readp->m_fileline; }
    static AstNetlist* rootp() { return s_readp->m_rootp; }
    static FileLine* copyOrSameFileLine() { return s_readp->fileline()->copyOrSameFileLine(); }
+    static bool inCellDefine() { return s_readp->m_inCellDefine; }
+    static void inCellDefine(bool flag) { s_readp->m_inCellDefine = flag; }
    static bool inLibrary() { return s_readp->m_inLibrary; }
    static void stateExitPsl();	// Parser -> lexer communication
    static void statePushVlg();	// Parser -> lexer communication
@@ -102,6 +105,7 @@ public:
    // CREATORS
    V3Read(AstNetlist* rootp) {
 	m_rootp = rootp; m_lexerp = NULL;
+	m_inCellDefine = false;
 	m_inLibrary = false;
 	m_inBeginKwd = 0;
 	m_lastVerilogState = stateVerilogRecent();
@@ -198,19 +198,17 @@ private:
 	nodep->taskp(NULL);
 	nodep->iterateChildren(*this);
    }
-    virtual void visit(AstDisplay* nodep, AstNUser*) {
+    virtual void visit(AstScopeName* nodep, AstNUser*) {
 	// If there's a %m in the display text, we add a special node that will contain the name()
-	if (nodep->name().find("%m") != string::npos) {
-	    string prefix = (string)(".")+m_scopep->prettyName();
-	    // TOP and above will be the user's name().
-	    // Note 'TOP.'is stripped by prettyName, but not 'TOP'.
-	    if (prefix != ".TOP") {
-		// To keep correct visual order, must add before other Text's
-		AstNode* afterp = nodep->scopeAttrp();
-		if (afterp) afterp->unlinkFrBackWithNext();
-		nodep->scopeAttrp(new AstText(nodep->fileline(), prefix));
-		if (afterp) nodep->scopeAttrp(afterp);
-	    }
+	string prefix = (string)(".")+m_scopep->prettyName();
+	// TOP and above will be the user's name().
+	// Note 'TOP.'is stripped by prettyName, but not 'TOP'.
+	if (prefix != ".TOP") {
+	    // To keep correct visual order, must add before other Text's
+	    AstNode* afterp = nodep->scopeAttrp();
+	    if (afterp) afterp->unlinkFrBackWithNext();
+	    nodep->scopeAttrp(new AstText(nodep->fileline(), prefix));
+	    if (afterp) nodep->scopeAttrp(afterp);
 	}
 	nodep->iterateChildren(*this);
    }
@@ -385,6 +385,9 @@ private:
    virtual void visit(AstText* nodep, AstNUser* vup) {
 	// Only used in CStmts which don't care....
    }
+    virtual void visit(AstScopeName* nodep, AstNUser* vup) {
+	// Only used in Displays which don't care....
+    }
    virtual void visit(AstVar* nodep, AstNUser* vup) {
 	//if (debug()) nodep->dumpTree(cout,"  InitPre: ");
 	// Must have deterministic constant width
@@ -538,7 +538,7 @@ int main(int argc, char** argv, char** env) {

    // Final steps
    v3Global.rootp()->dumpTreeFile(v3Global.debugFilename("final.tree",99));
-    V3Error::abortIfErrors();
+    V3Error::abortIfWarnings();

    if (!v3Global.opt.lintOnly() && v3Global.opt.makeDepend()) {
 	V3File::writeDepend(v3Global.opt.makeDir()+"/"+v3Global.opt.prefix()+"__ver.d");
@@ -24,7 +24,7 @@
 //**********************************************************************
 //**** Version and host name

-#define DTVERSION	"Verilator 3.650 4/20/2007"
+#define DTVERSION	"Verilator 3.652 6/21/2007"

 //**********************************************************************
 //**** Functions
@@ -19,7 +19,7 @@
 #                                                                           
 ######################################################################

-# DESCRIPTION: Edits flex output to get around Redhat 8.0 broken flex.
+# DESCRIPTION: Edits flex output to get around various broken flex issues.

 foreach my $line (<STDIN>) {
    # Fix flex 2.5.4 namespace omission
@@ -28,5 +28,9 @@ foreach my $line (<STDIN>) {
    $line =~ s!(\#define\s+yyFlexLexer\s+yyFlexLexer)!//flexfix: $1!g;
    # Fix flex 2.5.1 yytext_ptr undef
    $line =~ s!(\#undef\s+yytext_ptr)!//flexfix: $1!g;
+    # Fix flex 2.5.4 and GCC 4.1.0 warn_unused_result
+    $line =~ s!\(void\) *fwrite\((.*)\)!if (fwrite($1)) {}!g;
+    # Fix flex 2.5.33 and GCC 4.1.2 "warning: comparison between signed and unsigned integer expressions" in YY_INPUT
+    $line =~ s!for \( n = 0; n < max_size && !for ( n = 0; ((size_t)n < (size_t)max_size) && !g;
    print "$line";
 }
@@ -104,11 +104,12 @@ void yyerrorf(const char* format, ...) {
 %o 25000

 %s V95 V01 V05 S05
-%s PSL STRING
+%s PSL STRING ATTRMODE
 %s SYSCHDR SYSCINT SYSCIMP SYSCIMPH SYSCCTOR SYSCDTOR
 %s IGNORE

 ws	[ \t\f\r]+
+wsnr	[ \t\f]+
 	/* identifier */
 id	[a-zA-Z_][a-zA-Z0-9_$]*
 	/* escaped identifier */
@@ -130,38 +131,39 @@ escid	\\[^ \t\f\r\n]+
  "$fdisplay"		{yylval.fileline = CRELINE(); return yD_FDISPLAY;}
  "$finish"		{yylval.fileline = CRELINE(); return yD_FINISH;}
  "$fopen"		{yylval.fileline = CRELINE(); return yD_FOPEN;}
-  "$fullskew"		{yylval.fileline = CRELINE(); return yTIMINGSPEC;}
+  "$fullskew"		{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
  "$fwrite"		{yylval.fileline = CRELINE(); return yD_FWRITE;}
-  "$hold"		{yylval.fileline = CRELINE(); return yTIMINGSPEC;}
-  "$nochange"		{yylval.fileline = CRELINE(); return yTIMINGSPEC;}
-  "$period"		{yylval.fileline = CRELINE(); return yTIMINGSPEC;}
+  "$hold"		{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
+  "$nochange"		{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
+  "$period"		{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
  "$readmemb"		{yylval.fileline = CRELINE(); return yD_READMEMB;}
  "$readmemh"		{yylval.fileline = CRELINE(); return yD_READMEMH;}
  "$realtime"		{yylval.fileline = CRELINE(); return yD_TIME;}
-  "$recovery"		{yylval.fileline = CRELINE(); return yTIMINGSPEC;}
-  "$recrem"		{yylval.fileline = CRELINE(); return yTIMINGSPEC;}
-  "$removal"		{yylval.fileline = CRELINE(); return yTIMINGSPEC;}
-  "$setup"		{yylval.fileline = CRELINE(); return yTIMINGSPEC;}
-  "$setuphold"		{yylval.fileline = CRELINE(); return yTIMINGSPEC;}
-  "$skew"		{yylval.fileline = CRELINE(); return yTIMINGSPEC;}
+  "$recovery"		{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
+  "$recrem"		{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
+  "$removal"		{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
+  "$setup"		{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
+  "$setuphold"		{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
+  "$skew"		{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
  "$stop"		{yylval.fileline = CRELINE(); return yD_STOP;}
  "$time"		{yylval.fileline = CRELINE(); return yD_TIME;}
-  "$timeskew"		{yylval.fileline = CRELINE(); return yTIMINGSPEC;}
-  "$width"		{yylval.fileline = CRELINE(); return yTIMINGSPEC;}
+  "$timeskew"		{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
+  "$width"		{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
  "$write"		{yylval.fileline = CRELINE(); return yD_WRITE;}
  /*     Keywords */
  "always"		{yylval.fileline = CRELINE(); return yALWAYS;}
  "and"			{yylval.fileline = CRELINE(); return yAND;}
  "assign"		{yylval.fileline = CRELINE(); return yASSIGN;}
-  "begin"		{yylval.fileline = CRELINE(); return yBBEGIN;}
+  "begin"		{yylval.fileline = CRELINE(); return yBEGIN;}
  "buf"			{yylval.fileline = CRELINE(); return yBUF;}
  "case"		{yylval.fileline = CRELINE(); return yCASE;}
  "casex"		{yylval.fileline = CRELINE(); return yCASEX;}
  "casez"		{yylval.fileline = CRELINE(); return yCASEZ;}
  "default"		{yylval.fileline = CRELINE(); return yDEFAULT;}
  "defparam"		{yylval.fileline = CRELINE(); return yDEFPARAM;}
+  "edge"		{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
  "else"		{yylval.fileline = CRELINE(); return yELSE;}
-  "end"			{yylval.fileline = CRELINE(); return yBEND;}
+  "end"			{yylval.fileline = CRELINE(); return yEND;}
  "endcase"		{yylval.fileline = CRELINE(); return yENDCASE;}
  "endfunction"		{yylval.fileline = CRELINE(); return yENDFUNCTION;}
  "endmodule"		{yylval.fileline = CRELINE(); return yENDMODULE;}
@@ -182,12 +184,12 @@ escid	\\[^ \t\f\r\n]+
  "not"			{yylval.fileline = CRELINE(); return yNOT;}
  "or"			{yylval.fileline = CRELINE(); return yOR;}
  "output"		{yylval.fileline = CRELINE(); return yOUTPUT;}
-  "parameter"		{yylval.fileline = CRELINE(); return yPARAM;}
+  "parameter"		{yylval.fileline = CRELINE(); return yPARAMETER;}
  "posedge"		{yylval.fileline = CRELINE(); return yPOSEDGE;}
  "reg"			{yylval.fileline = CRELINE(); return yREG;}
  "scalared"		{yylval.fileline = CRELINE(); return ySCALARED;}
  "specify"		{yylval.fileline = CRELINE(); return ySPECIFY;}
-  "specparam"		{yylval.fileline = CRELINE(); return yTIMINGSPEC;}
+  "specparam"		{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
  "supply0"		{yylval.fileline = CRELINE(); return ySUPPLY0;}
  "supply1"		{yylval.fileline = CRELINE(); return ySUPPLY1;}
  "task"		{yylval.fileline = CRELINE(); return yTASK;}
@@ -216,7 +218,6 @@ escid	\\[^ \t\f\r\n]+
  "cmos"		{yyerrorf("Unsupported: Verilog 1995 reserved word not implemented: %s",yytext);}
  "deassign"		{yyerrorf("Unsupported: Verilog 1995 reserved word not implemented: %s",yytext);}
  "disable"		{yyerrorf("Unsupported: Verilog 1995 reserved word not implemented: %s",yytext);}
-  "edge"		{yyerrorf("Unsupported: Verilog 1995 reserved word not implemented: %s",yytext);}
  "endprimitive"	{yyerrorf("Unsupported: Verilog 1995 reserved word not implemented: %s",yytext);}
  "endtable"		{yyerrorf("Unsupported: Verilog 1995 reserved word not implemented: %s",yytext);}
  "event"		{yyerrorf("Unsupported: Verilog 1995 reserved word not implemented: %s",yytext);}
@@ -273,30 +274,30 @@ escid	\\[^ \t\f\r\n]+
  "$signed"		{yylval.fileline = CRELINE(); return yD_SIGNED;}
  "$unsigned"		{yylval.fileline = CRELINE(); return yD_UNSIGNED;}
  /*     Keywords */
+  "automatic"		{yylval.fileline = CRELINE(); return yAUTOMATIC;}
  "endgenerate"		{yylval.fileline = CRELINE(); return yENDGENERATE;}
  "generate"		{yylval.fileline = CRELINE(); return yGENERATE;}
  "genvar"		{yylval.fileline = CRELINE(); return yGENVAR;}
+  "ifnone"		{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
  "localparam"		{yylval.fileline = CRELINE(); return yLOCALPARAM;}
+  "noshowcancelled"	{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
+  "pulsestyle_ondetect"	{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
+  "pulsestyle_onevent"	{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
+  "showcancelled"	{yylval.fileline = CRELINE(); return yaTIMINGSPEC;}
  "signed"		{yylval.fileline = CRELINE(); return ySIGNED;}
+  "unsigned"		{yylval.fileline = CRELINE(); return yUNSIGNED;}
  /*     Special errors */
-  "include"		{yyerrorf("Unsupported: Verilog 2001 reserved word not implemented; probably you want `include instead: %s",yytext);}
+  "include"		{yyerrorf("Unsupported: Verilog 2001-config reserved word not implemented; probably you want `include instead: %s",yytext);}
  /*     Generic unsupported warnings */
-  "automatic"		{yyerrorf("Unsupported: Verilog 2001 reserved word not implemented: %s",yytext);}
-  "cell"		{yyerrorf("Unsupported: Verilog 2001 reserved word not implemented: %s",yytext);}
-  "config"		{yyerrorf("Unsupported: Verilog 2001 reserved word not implemented: %s",yytext);}
-  "design"		{yyerrorf("Unsupported: Verilog 2001 reserved word not implemented: %s",yytext);}
-  "endconfig"		{yyerrorf("Unsupported: Verilog 2001 reserved word not implemented: %s",yytext);}
-  "ifnone"		{yyerrorf("Unsupported: Verilog 2001 reserved word not implemented: %s",yytext);}
-  "incdir"		{yyerrorf("Unsupported: Verilog 2001 reserved word not implemented: %s",yytext);}
-  "instance"		{yyerrorf("Unsupported: Verilog 2001 reserved word not implemented: %s",yytext);}
-  "liblist"		{yyerrorf("Unsupported: Verilog 2001 reserved word not implemented: %s",yytext);}
-  "library"		{yyerrorf("Unsupported: Verilog 2001 reserved word not implemented: %s",yytext);}
-  "noshowcancelled"	{yyerrorf("Unsupported: Verilog 2001 reserved word not implemented: %s",yytext);}
-  "pulsestyle_ondetect"	{yyerrorf("Unsupported: Verilog 2001 reserved word not implemented: %s",yytext);}
-  "pulsestyle_onevent"	{yyerrorf("Unsupported: Verilog 2001 reserved word not implemented: %s",yytext);}
-  "showcancelled"	{yyerrorf("Unsupported: Verilog 2001 reserved word not implemented: %s",yytext);}
-  "unsigned"		{yyerrorf("Unsupported: Verilog 2001 reserved word not implemented: %s",yytext);}
-  "use"			{yyerrorf("Unsupported: Verilog 2001 reserved word not implemented: %s",yytext);}
+  "cell"		{yyerrorf("Unsupported: Verilog 2001-config reserved word not implemented: %s",yytext);}
+  "config"		{yyerrorf("Unsupported: Verilog 2001-config reserved word not implemented: %s",yytext);}
+  "design"		{yyerrorf("Unsupported: Verilog 2001-config reserved word not implemented: %s",yytext);}
+  "endconfig"		{yyerrorf("Unsupported: Verilog 2001-config reserved word not implemented: %s",yytext);}
+  "incdir"		{yyerrorf("Unsupported: Verilog 2001-config reserved word not implemented: %s",yytext);}
+  "instance"		{yyerrorf("Unsupported: Verilog 2001-config reserved word not implemented: %s",yytext);}
+  "liblist"		{yyerrorf("Unsupported: Verilog 2001-config reserved word not implemented: %s",yytext);}
+  "library"		{yyerrorf("Unsupported: Verilog 2001-config reserved word not implemented: %s",yytext);}
+  "use"			{yyerrorf("Unsupported: Verilog 2001-config reserved word not implemented: %s",yytext);}
 }

  /* Verilog 2005 */
@@ -552,45 +553,45 @@ escid	\\[^ \t\f\r\n]+

  /* Verilog 1995 Operators */
 <V95,V01,V05,S05,PSL>{
-  "&&"			{yylval.fileline = CRELINE(); return yANDAND;}
-  "||"			{yylval.fileline = CRELINE(); return yOROR;}
-  "<="			{yylval.fileline = CRELINE(); return yLTE;}
-  ">="			{yylval.fileline = CRELINE(); return yGTE;}
-  "<<"			{yylval.fileline = CRELINE(); return ySLEFT;}
-  ">>"			{yylval.fileline = CRELINE(); return ySRIGHT;}
-  "=="			{yylval.fileline = CRELINE(); return yEQUAL;}
-  "!="			{yylval.fileline = CRELINE(); return yNOTEQUAL;}
-  "==="			{yylval.fileline = CRELINE(); return yCASEEQUAL;}
-  "!=="			{yylval.fileline = CRELINE(); return yCASENOTEQUAL;}
-  "^~"			{yylval.fileline = CRELINE(); return yOP_XNOR;}
-  "~^"			{yylval.fileline = CRELINE(); return yOP_XNOR;}
-  "~&"			{yylval.fileline = CRELINE(); return yOP_NAND;}
-  "~|"			{yylval.fileline = CRELINE(); return yOP_NOR;}
+  "&&"			{yylval.fileline = CRELINE(); return yP_ANDAND;}
+  "||"			{yylval.fileline = CRELINE(); return yP_OROR;}
+  "<="			{yylval.fileline = CRELINE(); return yP_LTE;}
+  ">="			{yylval.fileline = CRELINE(); return yP_GTE;}
+  "<<"			{yylval.fileline = CRELINE(); return yP_SLEFT;}
+  ">>"			{yylval.fileline = CRELINE(); return yP_SRIGHT;}
+  "=="			{yylval.fileline = CRELINE(); return yP_EQUAL;}
+  "!="			{yylval.fileline = CRELINE(); return yP_NOTEQUAL;}
+  "==="			{yylval.fileline = CRELINE(); return yP_CASEEQUAL;}
+  "!=="			{yylval.fileline = CRELINE(); return yP_CASENOTEQUAL;}
+  "^~"			{yylval.fileline = CRELINE(); return yP_XNOR;}
+  "~^"			{yylval.fileline = CRELINE(); return yP_XNOR;}
+  "~&"			{yylval.fileline = CRELINE(); return yP_NAND;}
+  "~|"			{yylval.fileline = CRELINE(); return yP_NOR;}
 }

  /* Verilog 2001 Operators */
 <V01,V05,S05,PSL>{
-  "<<<"			{yylval.fileline = CRELINE(); return ySLEFT;}
-  ">>>"			{yylval.fileline = CRELINE(); return ySSRIGHT;}
-  "**"			{yylval.fileline = CRELINE(); return yPOW;}
-  "+:"			{yylval.fileline = CRELINE(); return yPLUSCOLON;}
-  "-:"			{yylval.fileline = CRELINE(); return yMINUSCOLON;}
+  "<<<"			{yylval.fileline = CRELINE(); return yP_SLEFT;}
+  ">>>"			{yylval.fileline = CRELINE(); return yP_SSRIGHT;}
+  "**"			{yylval.fileline = CRELINE(); return yP_POW;}
+  "+:"			{yylval.fileline = CRELINE(); return yP_PLUSCOLON;}
+  "-:"			{yylval.fileline = CRELINE(); return yP_MINUSCOLON;}
 }

  /* PSL Operators */
 <PSL>{
  "{"			{yylval.fileline = CRELINE(); return yPSL_BRA;}	// Avoid parser hitting concatenate.
  "}"			{yylval.fileline = CRELINE(); return yPSL_KET;}	// Avoid parser hitting concatenate.
-  "->"			{yylval.fileline = CRELINE(); return yOP_LOGIF;}
+  "->"			{yylval.fileline = CRELINE(); return yP_LOGIF;}
  "<->"			{yyerrorf("Unsupported: PSL operator not implemented: %s",yytext);} //Unsup in other tools
-  "[*"			{yyerrorf("Unsupported: PSL operator not implemented: %s",yytext);} // yBRA_STAR
-  "[*]"			{yyerrorf("Unsupported: PSL operator not implemented: %s",yytext);} // yBRA_STAR_KET
-  "[+]"			{yyerrorf("Unsupported: PSL operator not implemented: %s",yytext);} // yBRA_PLUS_KET
-  "[->"			{yyerrorf("Unsupported: PSL operator not implemented: %s",yytext);} // yBRA_MINUS_GT
-  "[->]"		{yyerrorf("Unsupported: PSL operator not implemented: %s",yytext);} // yBRA_MINUS_GT_KET
-  "[="			{yyerrorf("Unsupported: PSL operator not implemented: %s",yytext);} // yBRA_EQ
-  "|->"			{yyerrorf("Unsupported: PSL operator not implemented: %s",yytext);} // yOR_MINUS_GT
-  "|=>"			{yyerrorf("Unsupported: PSL operator not implemented: %s",yytext);} // yOR_EQ_GT
+  "[*"			{yyerrorf("Unsupported: PSL operator not implemented: %s",yytext);} // yP_BRA_STAR
+  "[*]"			{yyerrorf("Unsupported: PSL operator not implemented: %s",yytext);} // yP_BRA_STAR_KET
+  "[+]"			{yyerrorf("Unsupported: PSL operator not implemented: %s",yytext);} // yP_BRA_PLUS_KET
+  "[->"			{yyerrorf("Unsupported: PSL operator not implemented: %s",yytext);} // yP_BRA_MINUS_GT
+  "[->]"		{yyerrorf("Unsupported: PSL operator not implemented: %s",yytext);} // yP_BRA_MINUS_GT_KET
+  "[="			{yyerrorf("Unsupported: PSL operator not implemented: %s",yytext);} // yP_BRA_EQ
+  "|->"			{yyerrorf("Unsupported: PSL operator not implemented: %s",yytext);} // yP_OR_MINUS_GT
+  "|=>"			{yyerrorf("Unsupported: PSL operator not implemented: %s",yytext);} // yP_OR_EQ_GT
 }

  /* Identifiers and numbers */
@@ -604,45 +605,42 @@ escid	\\[^ \t\f\r\n]+
 			   } else {
 			       yylval.strp = V3Read::newString(yytext); // Need _ as "6..." isn't legal ID
 			   }
-			   return yID;
+			   return yaID;
 			 }

  {id}			{  yylval.strp = V3Read::newString(yytext);
-			   return yID;
+			   return yaID;
 			 }

  \"[^\"\\]*\"		{  yylval.strp = V3Read::newString(yytext+1,yyleng-2);
-			   return ySTRING;
+			   return yaSTRING;
 			}
  \" 			{ yy_push_state(STRING); yymore(); }


  [0-9]*?['']s?[bcodhBCODH][ \t]*[A-Fa-f0-9xXzZ_?]*	{
 			  yylval.nump = V3Read::newNumber(V3Read::fileline(),(char*)yytext);
-                          return yINTNUM;
+                          return yaINTNUM;
 			}
  [0-9]*?['']s?[01xXzZ]	{	/* SystemVerilog */
 			  yylval.nump = V3Read::newNumber(V3Read::fileline(),(char*)yytext);
-                          return yINTNUM;
+                          return yaINTNUM;
 			}
-  [0-9]+[_0-9]*[ \t]*['']s?[bcodhBCODH]?[ \t]*[A-Fa-f0-9xXzZ_?]*	{
+  [0-9][_0-9]*[ \t]*['']s?[bcodhBCODH]?[ \t]*[A-Fa-f0-9xXzZ_?]*	{
 			  yylval.nump = V3Read::newNumber(V3Read::fileline(),(char*)yytext);
-                          return yINTNUM;
+                          return yaINTNUM;
 			}
-  [0-9]*		{ yylval.nump = V3Read::newNumber(V3Read::fileline(),(char*)yytext);
-                          return yINTNUM;
+  [0-9][_0-9]*		{ yylval.nump = V3Read::newNumber(V3Read::fileline(),(char*)yytext);
+                          return yaINTNUM;
 			}
-  [-+]?[0-9]+(\.[0-9]+)([eE][-+]?[0-9]+)? {
+  [0-9][_0-9]*(\.[_0-9]+)([eE][-+]?[_0-9]+)? {
    			  yylval.cdouble = 0;  /* Only for delays, not used yet */
-                          return yFLOATNUM;
+                          return yaFLOATNUM;
 			}
-  [-+]?[0-9]+(\.[0-9]+)?([eE][-+]?[0-9]+) {
+  [0-9][_0-9]*(\.[_0-9]+)?([eE][-+]?[_0-9]+) {
    			  yylval.cdouble = 0;  /* Only for delays, not used yet */
-                          return yFLOATNUM;
+                          return yaFLOATNUM;
 			}
-
-  "`timescale"{ws}+[^\n]*	{}
-  "`line"{ws}+[^\n]*\n		{V3Read::ppline(yytext);}
 }

  /************************************************************************/
@@ -653,42 +651,65 @@ escid	\\[^ \t\f\r\n]+
 <STRING>\\.	 	{ yymore(); }
 <STRING>\" 		{ yy_pop_state();
 			  yylval.strp = V3Read::newString(yytext+1,yyleng-2);
-			  return ySTRING; }
+			  return yaSTRING; }

  /************************************************************************/
+  /* Attributes */
+<ATTRMODE>\n		{ yymore(); NEXTLINE(); }
+<ATTRMODE>"*)"		{ yy_pop_state(); } 
+<ATTRMODE>. 		{ yymore(); }
+<ATTRMODE><<EOF>>	{ yyerror("EOF in (*");
+			  yyleng = 0; }
+
+  /************************************************************************/
+  /* Attributes */
+<V95,V01,V05,S05>{
+    "(*" 		{ yymore(); yy_push_state(ATTRMODE); }
+}
+
+  /************************************************************************/
+  /* Preprocessor*/
  /* Common for all SYSC header states */
  /* OPTIMIZE: we return one per line, make it one for the entire block */
 <V95,V01,V05,S05,PSL,SYSCHDR,SYSCINT,SYSCIMP,SYSCIMPH,SYSCCTOR,SYSCDTOR,IGNORE>{
-  [ \t]*"`verilog"			{ BEGIN V3Read::lastVerilogState(); }
-  [ \t]*"`psl"				{ if (V3Read::optPsl()) { BEGIN PSL; } else { BEGIN IGNORE; } }
-  [ \t]*"`systemc_header"		{ BEGIN SYSCHDR; }
-  [ \t]*"`systemc_ctor"			{ BEGIN SYSCCTOR; }
-  [ \t]*"`systemc_dtor"			{ BEGIN SYSCDTOR; }
-  [ \t]*"`systemc_interface"		{ BEGIN SYSCINT; }
-  [ \t]*"`systemc_implementation"	{ BEGIN SYSCIMP; }
-  [ \t]*"`systemc_imp_header"		{ BEGIN SYSCIMPH; }
+  "`celldefine"				{ V3Read::inCellDefine(true); }
+  "`endcelldefine"			{ V3Read::inCellDefine(false); }
+  "`endprotect"				{ }
+  "`inline"				{ }
+  "`line"{ws}+[^\n]*\n			{ V3Read::ppline(yytext); }
+  "`portcoerce"				{ }
+  "`protect"				{ }
+  "`psl"				{ if (V3Read::optPsl()) { BEGIN PSL; } else { BEGIN IGNORE; } }
+  "`resetall"				{ }
+  "`systemc_ctor"			{ BEGIN SYSCCTOR; }
+  "`systemc_dtor"			{ BEGIN SYSCDTOR; }
+  "`systemc_header"			{ BEGIN SYSCHDR; }
+  "`systemc_imp_header"			{ BEGIN SYSCIMPH; }
+  "`systemc_implementation"		{ BEGIN SYSCIMP; }
+  "`systemc_interface"			{ BEGIN SYSCINT; }
+  "`timescale"{ws}+[^\n]*		{}
+  "`verilog"				{ BEGIN V3Read::lastVerilogState(); }

-  [ \t]*"`begin_keywords"[ \t]*\"1364-1995\"		{ yy_push_state(V95); V3Read::pushBeginKeywords(YY_START);}
-  [ \t]*"`begin_keywords"[ \t]*\"1364-2001\"		{ yy_push_state(V01); V3Read::pushBeginKeywords(YY_START);}
-  [ \t]*"`begin_keywords"[ \t]*\"1364-2001-noconfig\"	{ yy_push_state(V01); V3Read::pushBeginKeywords(YY_START);}
-  [ \t]*"`begin_keywords"[ \t]*\"1364-2005\"		{ yy_push_state(V05); V3Read::pushBeginKeywords(YY_START);}
-  [ \t]*"`begin_keywords"[ \t]*\"1800-2005\"		{ yy_push_state(S05); V3Read::pushBeginKeywords(YY_START);}
-  [ \t]*"`end_keywords"					{ yy_pop_state(); if (!V3Read::popBeginKeywords()) yyerrorf("`end_keywords when not inside `begin_keywords block"); }
-
-  "`line"[ \t][^\n]*\n			{V3Read::ppline(yytext);}
+  "`begin_keywords"[ \t]*\"1364-1995\"		{ yy_push_state(V95); V3Read::pushBeginKeywords(YY_START);}
+  "`begin_keywords"[ \t]*\"1364-2001\"		{ yy_push_state(V01); V3Read::pushBeginKeywords(YY_START);}
+  "`begin_keywords"[ \t]*\"1364-2001-noconfig\"	{ yy_push_state(V01); V3Read::pushBeginKeywords(YY_START);}
+  "`begin_keywords"[ \t]*\"1364-2005\"		{ yy_push_state(V05); V3Read::pushBeginKeywords(YY_START);}
+  "`begin_keywords"[ \t]*\"1800-2005\"		{ yy_push_state(S05); V3Read::pushBeginKeywords(YY_START);}
+  "`end_keywords"					{ yy_pop_state(); if (!V3Read::popBeginKeywords()) yyerrorf("`end_keywords when not inside `begin_keywords block"); }
 }

-<SYSCHDR>[ \t]*[^` \t\n][^\n]*\n	{ NEXTLINE(); yylval.strp = V3Read::newString(yytext); return ySCHDR;}
-<SYSCINT>[ \t]*[^` \t\n][^\n]*\n	{ NEXTLINE(); yylval.strp = V3Read::newString(yytext); return ySCINT;}
-<SYSCIMP>[ \t]*[^` \t\n][^\n]*\n	{ NEXTLINE(); yylval.strp = V3Read::newString(yytext); return ySCIMP;}
-<SYSCIMPH>[ \t]*[^` \t\n][^\n]*\n	{ NEXTLINE(); yylval.strp = V3Read::newString(yytext); return ySCIMPH;}
-<SYSCCTOR>[ \t]*[^` \t\n][^\n]*\n	{ NEXTLINE(); yylval.strp = V3Read::newString(yytext); return ySCCTOR;}
-<SYSCDTOR>[ \t]*[^` \t\n][^\n]*\n	{ NEXTLINE(); yylval.strp = V3Read::newString(yytext); return ySCDTOR;}
+<SYSCHDR>[ \t]*[^` \t\n][^\n]*\n	{ NEXTLINE(); yylval.strp = V3Read::newString(yytext); return yaSCHDR;}
+<SYSCINT>[ \t]*[^` \t\n][^\n]*\n	{ NEXTLINE(); yylval.strp = V3Read::newString(yytext); return yaSCINT;}
+<SYSCIMP>[ \t]*[^` \t\n][^\n]*\n	{ NEXTLINE(); yylval.strp = V3Read::newString(yytext); return yaSCIMP;}
+<SYSCIMPH>[ \t]*[^` \t\n][^\n]*\n	{ NEXTLINE(); yylval.strp = V3Read::newString(yytext); return yaSCIMPH;}
+<SYSCCTOR>[ \t]*[^` \t\n][^\n]*\n	{ NEXTLINE(); yylval.strp = V3Read::newString(yytext); return yaSCCTOR;}
+<SYSCDTOR>[ \t]*[^` \t\n][^\n]*\n	{ NEXTLINE(); yylval.strp = V3Read::newString(yytext); return yaSCDTOR;}
 <IGNORE>[ \t]*[^` \t\n][^\n]*\n		{ NEXTLINE(); }

  /* Pick up text-type data */
 <SYSCHDR,SYSCINT,SYSCIMP,SYSCIMPH,SYSCCTOR,SYSCDTOR,IGNORE>{
-  [ \t]*\n		{ NEXTLINE(); yymore();}
+  {wsnr}*		{ yymore();}
+  \n			{ NEXTLINE(); yymore();}
  \r			;
 }

@@ -697,9 +718,7 @@ escid	\\[^ \t\f\r\n]+

 <V95,V01,V05,S05,PSL>{
  "`"[a-zA-Z_0-9]+	{ yyerrorf("Define or directive not defined: %s",yytext); }
-
-  "//"[^\n]+		{ }  /* throw away single line comments */
-
+  "//"[^\n]*		{ }  /* throw away single line comments */
  .			{yylval.fileline = CRELINE(); return yytext[0];}	/* return single char ops. */
 }

@@ -32,8 +32,8 @@ use vars qw ($Debug %Vars $Driver $Fork);

 $::Driver = 1;

-eval "use Parallel::Forker; \$Fork=Parallel::Forker->new();";
-$Fork = Forker->new() if !$Fork;
+eval "use Parallel::Forker; \$Fork=Parallel::Forker->new(use_sig_child=>1);";
+$Fork = Forker->new(use_sig_child=>1) if !$Fork;
 $SIG{CHLD} = sub { $Fork->sig_child() if $Fork; };
 $SIG{TERM} = sub { $Fork->kill_tree_all('TERM') if $Fork; die "Quitting...\n"; };

@@ -549,6 +549,7 @@ sub _make_main {
 	print $fh "    double sim_time = 1000;\n";
    }
    print $fh "    Verilated::debug(".($self->{verilated_debug}?1:0).");\n";
+    print $fh "    Verilated::randReset(".$self->{verilated_randReset}.");\n" if defined $self->{verilated_randReset};
    print $fh "    topp = new $VM_PREFIX (\"TOP\");\n";
    my $set;
    if ($self->sp) {
@@ -60,6 +60,9 @@ module sub (/*AUTOARG*/
   output reg [4:0]  out2;

   always @* begin
+      // Test empty cases
+      casez (in[0])
+      endcase
      casez (in)
 	24'b0000_0000_0000_0000_0000_0000 : {out1,out2} = {1'b0,5'h00};
 	24'b????_????_????_????_????_???1 : {out1,out2} = {1'b1,5'h00};
@@ -24,6 +24,8 @@ execute (
 [0] %x=00abc1234567812345678 %0x=abc1234567812345678 %o=012570110642547402215053170 %b=000001010101111000001001000110100010101100111100000010010001101000101011001111000

 [0] %s=! %s= what! %s= hmmm!1234
+[0] hello, from a very long string. Percent %s are literally substituted in.
+*-* All Finished *-*
 '),
     );

@@ -33,6 +33,9 @@ module t;
      $display("[%0t] %%s=%s %%s=%s %%s=%s", $time,
 	       str2[7:0], str2, str3);

+      $display("[%0t] %s%s%s", $time,
+	       "hel", "lo, fr", "om a very long string. Percent %s are literally substituted in.");
+
      // Str check
 `ifndef nc	// NC-Verilog 5.3 chokes on this test
      if (str !== 32'h00_bf_11_0a) $stop;
@@ -0,0 +1,36 @@
+#!/usr/bin/perl
+if (!$::Driver) { use FindBin; exec("./driver.pl", @ARGV, $0); die; }
+# $Id$
+# DESCRIPTION: Verilator: Verilog Test driver/expect definition
+#
+# Copyright 2003 by Wilson Snyder. This program is free software; you can
+# redistribute it and/or modify it under the terms of either the GNU
+# General Public License or the Perl Artistic License.
+
+top_filename("t/t_display.v");
+
+compile (
+	 v_flags2 => [$Last_Self->{v3}?"-O0":""],
+	 );
+
+execute (
+	 check_finished=>1,
+	 expect=>quotemeta(
+'[0] In TOP.v: Hi
+[0] In TOP.v.sub
+[0] In TOP.v.sub.subblock
+[0] In TOP.v.sub2
+[0] In TOP.v.sub2.subblock2
+[0] %X=0c %D=12 %0X=c %0O=14 %B=001100
+[0] %x=0c %d=12 %0x=c %0o=14 %b=001100
+[0] %x=00abbbbcccc %0x=abbbbcccc %o=00527356746314 %b=00000101010111011101110111100110011001100
+[0] %x=00abc1234567812345678 %0x=abc1234567812345678 %o=012570110642547402215053170 %b=000001010101111000001001000110100010101100111100000010010001101000101011001111000
+
+[0] %s=! %s= what! %s= hmmm!1234
+[0] hello, from a very long string. Percent %s are literally substituted in.
+*-* All Finished *-*
+'),
+     );
+
+ok(1);
+1;
@@ -13,12 +13,12 @@ compile (
 execute (
 	 check_finished=>1,
 	 expect=> quotemeta(
-'[0] %x=0bbccc %x=0bbccc %o=2736314 %b=010111011110011001100 %0d=769228 %d=  769228
-[0] %x=1bbccc %x=1bbccc %o=6736314 %b=110111011110011001100 %0d=-279348 %d= -279348
-[0] %x=000bbbbcccc %x=000bbbbcccc %o=00027356746314 %b=00000000010111011101110111100110011001100 %0d=3149647052 %d=    3149647052
-[0] %x=100bbbbcccc %x=100bbbbcccc %o=20027356746314 %b=10000000010111011101110111100110011001100 %0d=-1096361980724 %d=-1096361980724
-[0] %x=000bc1234567812345678 %x=000bc1234567812345678 %o=000570110642547402215053170 %b=000000000101111000001001000110100010101100111100000010010001101000101011001111000
-[0] %x=000bc1234577812345678 %x=000bc1234577812345678 %o=000570110642567402215053170 %b=000000000101111000001001000110100010101110111100000010010001101000101011001111000
+'[0] lp %x=0bbccc %x=0bbccc %o=2736314 %b=010111011110011001100 %0d=769228 %d=  769228
+[0] ln %x=1bbccc %x=1bbccc %o=6736314 %b=110111011110011001100 %0d=-279348 %d= -279348
+[0] qp %x=001bbbbcccc %x=001bbbbcccc %o=00067356746314 %b=00000000110111011101110111100110011001100 %0d=7444614348 %d=    7444614348
+[0] qn %x=101bbbbcccc %x=101bbbbcccc %o=20067356746314 %b=10000000110111011101110111100110011001100 %0d=-1092067013428 %d=-1092067013428
+[0] wp %x=000bc1234567812345678 %x=000bc1234567812345678 %o=000570110642547402215053170 %b=000000000101111000001001000110100010101100111100000010010001101000101011001111000
+[0] wn %x=000bc1234577812345678 %x=000bc1234577812345678 %o=000570110642567402215053170 %b=000000000101111000001001000110100010101110111100000010010001101000101011001111000
 '),
     );

@@ -7,24 +7,24 @@
 module t;
   reg signed [20:0] longp; initial longp = 21'shbbccc;
   reg signed [20:0] longn; initial longn = 21'shbbccc; initial longn[20]=1'b1;
-   reg signed [40:0] quadp; initial quadp = 41'shbbbb_cccc;
-   reg signed [40:0] quadn; initial quadn = 41'shbbbb_cccc; initial quadn[40]=1'b1;
+   reg signed [40:0] quadp; initial quadp = 41'sh1_bbbb_cccc;
+   reg signed [40:0] quadn; initial quadn = 41'sh1_bbbb_cccc; initial quadn[40]=1'b1;
   reg signed [80:0] widep; initial widep = 81'shbc_1234_5678_1234_5678;
   reg signed [80:0] widen; initial widen = 81'shbc_1234_5678_1234_5678; initial widen[40]=1'b1;

   initial begin
      // Display formatting
-      $display("[%0t] %%x=%x %%x=%x %%o=%o %%b=%b %%0d=%0d %%d=%d", $time,
+      $display("[%0t] lp %%x=%x %%x=%x %%o=%o %%b=%b %%0d=%0d %%d=%d", $time,
 	       longp, longp, longp, longp, longp, longp);
-      $display("[%0t] %%x=%x %%x=%x %%o=%o %%b=%b %%0d=%0d %%d=%d", $time,
+      $display("[%0t] ln %%x=%x %%x=%x %%o=%o %%b=%b %%0d=%0d %%d=%d", $time,
 	       longn, longn, longn, longn, longn, longn);
-      $display("[%0t] %%x=%x %%x=%x %%o=%o %%b=%b %%0d=%0d %%d=%d", $time,
+      $display("[%0t] qp %%x=%x %%x=%x %%o=%o %%b=%b %%0d=%0d %%d=%d", $time,
 	       quadp, quadp, quadp, quadp, quadp, quadp);
-      $display("[%0t] %%x=%x %%x=%x %%o=%o %%b=%b %%0d=%0d %%d=%d", $time,
+      $display("[%0t] qn %%x=%x %%x=%x %%o=%o %%b=%b %%0d=%0d %%d=%d", $time,
 	       quadn, quadn, quadn, quadn, quadn, quadn);
-      $display("[%0t] %%x=%x %%x=%x %%o=%o %%b=%b", $time,
+      $display("[%0t] wp %%x=%x %%x=%x %%o=%o %%b=%b", $time,
 	       widep, widep, widep, widep);
-      $display("[%0t] %%x=%x %%x=%x %%o=%o %%b=%b", $time,
+      $display("[%0t] wn %%x=%x %%x=%x %%o=%o %%b=%b", $time,
 	       widen, widen, widen, widen);
      $display;
      $write("*-* All Finished *-*\n");
@@ -0,0 +1,29 @@
+#!/usr/bin/perl
+if (!$::Driver) { use FindBin; exec("./driver.pl", @ARGV, $0); die; }
+# $Id$
+# DESCRIPTION: Verilator: Verilog Test driver/expect definition
+#
+# Copyright 2003 by Wilson Snyder. This program is free software; you can
+# redistribute it and/or modify it under the terms of either the GNU
+# General Public License or the Perl Artistic License.
+
+top_filename("t/t_display_signed.v");
+
+compile (
+	 v_flags2 => [$Last_Self->{v3}?"-O0":""],
+	 );
+
+execute (
+	 check_finished=>1,
+	 expect=> quotemeta(
+'[0] lp %x=0bbccc %x=0bbccc %o=2736314 %b=010111011110011001100 %0d=769228 %d=  769228
+[0] ln %x=1bbccc %x=1bbccc %o=6736314 %b=110111011110011001100 %0d=-279348 %d= -279348
+[0] qp %x=001bbbbcccc %x=001bbbbcccc %o=00067356746314 %b=00000000110111011101110111100110011001100 %0d=7444614348 %d=    7444614348
+[0] qn %x=101bbbbcccc %x=101bbbbcccc %o=20067356746314 %b=10000000110111011101110111100110011001100 %0d=-1092067013428 %d=-1092067013428
+[0] wp %x=000bc1234567812345678 %x=000bc1234567812345678 %o=000570110642547402215053170 %b=000000000101111000001001000110100010101100111100000010010001101000101011001111000
+[0] wn %x=000bc1234577812345678 %x=000bc1234577812345678 %o=000570110642567402215053170 %b=000000000101111000001001000110100010101110111100000010010001101000101011001111000
+'),
+     );
+
+ok(1);
+1;
@@ -16,6 +16,7 @@ module t;
      if (add(add(3'd1)) != 3'd3) $stop;
      if (global != 4) $stop;
      if (munge4(4'b0010) != 4'b1011) $stop;
+      if (toint(2) != 3) $stop;
      if (global != 5) $stop;
      setit;
      incr(global,global,32'h10);
@@ -66,10 +67,11 @@ module t;
      end
   endtask

-   task incr;
-      output [31:0] z;
-      input [31:0] a;
-      input [31:0] inc;
+   task incr (
+	      // Check a V2K style input/output list
+    output [31:0] z,
+    input [31:0]  a, inc
+	      );
      z = a + inc;
   endtask

@@ -104,4 +106,9 @@ module t;
      nil_func = fa + fb;
   endfunction

+   function integer toint;
+      input integer fa;
+      toint = fa + 32'h1;
+   endfunction
+
 endmodule
@@ -0,0 +1,20 @@
+#!/usr/bin/perl
+if (!$::Driver) { use FindBin; exec("./driver.pl", @ARGV, $0); die; }
+# $Id$
+# DESCRIPTION: Verilator: Verilog Test driver/expect definition
+#
+# Copyright 2003 by Wilson Snyder. This program is free software; you can
+# redistribute it and/or modify it under the terms of either the GNU
+# General Public License or the Perl Artistic License.
+
+$Last_Self->{verilated_randReset} = 1;
+
+compile (
+	 );
+
+execute (
+	 check_finished=>1,
+     );
+
+ok(1);
+1;
@@ -0,0 +1,75 @@
+// $Id$
+// DESCRIPTION: Verilator: Verilog Test module
+
+// verilator lint_off WIDTH
+// verilator lint_off VARHIDDEN
+
+module t (
+   clk
+   );
+   input clk;
+   integer 	cyc=0;
+   reg [63:0] 	crc; initial crc = 64'h1;
+
+   chk chk (.clk	(clk),
+	    .rst_l	(1'b1),
+	    .expr	(|crc),
+	    );
+
+   always @ (posedge clk) begin
+      cyc <= cyc + 1;
+      crc <= {crc[62:0], crc[63]^crc[2]^crc[0]};
+      if (cyc==0) begin
+	 crc <= 64'h5aef0c8d_d70a4497;
+      end
+      else if (cyc<90) begin
+      end
+      else if (cyc==99) begin
+	 $write("*-* All Finished *-*\n");
+	 $finish;
+      end
+   end
+endmodule
+
+module chk (input clk, input rst_l, input expr);
+
+   integer errors; initial errors = 0;
+
+   task printerr;
+      input [8*64:1] msg;
+      begin
+	 errors = errors + 1;
+	 $write("%%Error: %0s\n", msg);
+	 $stop;
+      end
+   endtask 
+
+   always @(posedge clk) begin
+      if (rst_l) begin
+	 if (expr == 1'b0) begin
+            printerr("expr not asserted");
+	 end
+      end
+   end
+
+   wire noxs = ((expr ^ expr) == 1'b0);
+
+   reg 	  hasx;
+   always @ (noxs) begin
+      if (noxs) begin
+         hasx = 1'b0;
+      end
+      else begin
+         hasx = 1'b1;
+      end
+   end
+
+   always @(posedge clk) begin
+      if (rst_l) begin
+         if (hasx) begin
+            printerr("expr has unknowns");
+         end
+      end
+   end
+
+endmodule 
@@ -56,7 +56,7 @@ endmodule

 module ftest(
             input [ 7:0 ]  a,
-             input [ 7:0 ]  b,
+                            b,   // Test legal syntax
             input clk,
             output  [ 7:0 ]  z
             );
@@ -85,7 +85,7 @@ endmodule // ftest

 module mytop ( 
           input [ 7:0 ]  a,
-           input [ 7:0 ]  b,
+                          b,
           input clk,
           output  [ 7:0 ]  z
           );
@@ -1,4 +1,4 @@
-// $Id:$
+// $Id$
 // DESCRIPTION: Verilator: Verilog Test module
 //
 // This file ONLY is placed into the Public Domain, for any use,
@@ -24,6 +24,8 @@ module t (/*AUTOARG*/

   wire [7:0]		osizedreg;		// From sub of t_inst_v2k_sub.v

+   hello hsub;
+
   t_inst_v2k_sub sub
     (
      // Outputs
@@ -55,6 +57,10 @@ module t (/*AUTOARG*/

 endmodule

+module hello;
+   initial $write ("Hello\n");
+endmodule
+
 // Local Variables:
 // compile-command: "./vlint __FILE__"
 // End:
@@ -22,6 +22,8 @@ At file t/t_preproc_inc2.v  line 4

 `line 1 "t/t_preproc_inc3.v" 1

+`line 2 "inc3_a_filename_from_line_directive" 0
+
Author	SHA1	Message	Date
Wilson Snyder	4a9bea6980	Version bump; commentary git-svn-id: file://localhost/svn/verilator/trunk/verilator@942 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-06-21 21:00:38 +00:00
Wilson Snyder	bfddd80f43	Support V2K function/task argument lists. git-svn-id: file://localhost/svn/verilator/trunk/verilator@941 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-06-19 23:43:14 +00:00
Wilson Snyder	84a778719a	Fix constification removing continuous always blocks git-svn-id: file://localhost/svn/verilator/trunk/verilator@940 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-06-15 14:39:52 +00:00
Wilson Snyder	829d80d5b5	Fix display constanting of neg quads. Part of previous checkin git-svn-id: file://localhost/svn/verilator/trunk/verilator@939 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-06-14 21:27:40 +00:00
Wilson Snyder	d6a5c97f3a	Fix last change: percents must be literalized git-svn-id: file://localhost/svn/verilator/trunk/verilator@938 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-06-14 18:34:08 +00:00
Wilson Snyder	4ba00bd256	Propagate constants into displays git-svn-id: file://localhost/svn/verilator/trunk/verilator@937 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-06-14 17:29:37 +00:00
Wilson Snyder	c18f9da400	Put display scope tracking under special node type git-svn-id: file://localhost/svn/verilator/trunk/verilator@936 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-06-14 16:41:32 +00:00
Wilson Snyder	5b620a8dc5	Add V3Number display function, unused as yet git-svn-id: file://localhost/svn/verilator/trunk/verilator@935 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-06-14 14:24:21 +00:00
Wilson Snyder	9c968c590c	Fix Preprocessor dropping some line directives git-svn-id: file://localhost/svn/verilator/trunk/verilator@934 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-06-13 17:34:09 +00:00
Wilson Snyder	dff5d5c4e4	Report as many warning types as possible before exiting. git-svn-id: file://localhost/svn/verilator/trunk/verilator@933 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-06-12 19:39:10 +00:00
Wilson Snyder	1265e8cce8	Support V2K portlists with input a,b,... git-svn-id: file://localhost/svn/verilator/trunk/verilator@932 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-06-12 13:58:56 +00:00
Wilson Snyder	2b5d7eeb50	Lesser license for verilated files git-svn-id: file://localhost/svn/verilator/trunk/verilator@931 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-06-11 17:07:11 +00:00
Wilson Snyder	bb9ae89049	Version bump git-svn-id: file://localhost/svn/verilator/trunk/verilator@928 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-05-22 12:15:01 +00:00
Wilson Snyder	72832a2810	Support empty module declarations git-svn-id: file://localhost/svn/verilator/trunk/verilator@927 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-05-18 18:48:22 +00:00
Wilson Snyder	18cb210eac	Ignore protect, and allow empty case git-svn-id: file://localhost/svn/verilator/trunk/verilator@926 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-05-18 14:03:50 +00:00
Wilson Snyder	2c5a183368	Ignore ctrl-Zs in preprocessor git-svn-id: file://localhost/svn/verilator/trunk/verilator@925 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-05-17 16:15:24 +00:00
Wilson Snyder	386f0a75df	Support automatic and additional v2k timing statements git-svn-id: file://localhost/svn/verilator/trunk/verilator@924 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-05-16 19:27:29 +00:00
Wilson Snyder	ea26482154	Support functions which return integers git-svn-id: file://localhost/svn/verilator/trunk/verilator@923 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-05-16 18:19:23 +00:00
Wilson Snyder	3aee7f918a	More cleanup to match VParse, and support celldefine properly git-svn-id: file://localhost/svn/verilator/trunk/verilator@922 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-05-16 12:55:25 +00:00
Wilson Snyder	b3dd18b215	More bison cleanup; no functional change git-svn-id: file://localhost/svn/verilator/trunk/verilator@921 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-05-14 20:59:58 +00:00
Wilson Snyder	a77e331e89	Standardize flex->bison token names. No functional change. git-svn-id: file://localhost/svn/verilator/trunk/verilator@920 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-05-12 16:29:25 +00:00
Wilson Snyder	6f414ee9e2	Add unsigned keyword git-svn-id: file://localhost/svn/verilator/trunk/verilator@919 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-05-12 15:31:04 +00:00
Wilson Snyder	8d56b498d1	Warn if flex is not installed. git-svn-id: file://localhost/svn/verilator/trunk/verilator@918 77ca24e4-aefa-0310-84f0-b9a241c72d87	2007-04-24 17:03:52 +00:00