CHANGELOG

-------------------------------------------------------------------------------
2003-06-08  Jimen Ching  <jching@core2>

	* FAQ: Mention negative numbers are not supported.

2003-06-07  Jimen Ching  <jching@core2>

	* FAQ: Don't support older gcc.
	Other cleanup.

	* vbs.txt: Document added features.

	* src/vbs.l, src/vbs.y: Update copyright.

	* src/Makefile.in: Clean all configure generated files.

2003-06-06  Jimen Ching  <jching@core2>

	* src/configure, src/Makefile.in, src/configure.in:
	Fix build for Perl support.

	* EXAMPLES/ivl.sh: Additional test cases to ignore.

	* src/vbs.l, src/vbs.y: Fix parsing of numbers and optional delay.

	* src/p_expr.cc: Support parsing negative numbers.

2003-02-17  Jimen Ching  <jching@core2>

	* src/common/st_setup.cc, src/misc/decbase.h, src/moditm/misetup.cc, src/stmt/assign.cc, src/stmt/assign.h, src/stmt/case.cc, src/stmt/case.h, src/stmt/ifelse.cc, src/stmt/ifelse.h, src/stmt/loopstmt.cc, src/stmt/loopstmt.h, src/stmt/seqblk.cc, src/stmt/seqblk.h, src/stmt/stmtbase.h, src/stmt/taskenbl.cc, src/stmt/taskenbl.h:
	Remove unused code.

2003-02-03  Jimen Ching  <jching@core2>

	* BUGS: Update with missing feature.

	* src/common/event.h, src/common/time_whl.h:
	More (C++) standard conformance.

2003-01-21  Jimen Ching  <jching@core2>

	* src/expr/esetup.cc: Initialize variable to silence warning.

2003-01-20  Jimen Ching  <jching@core2>

	* EXAMPLES/ivl.sh, src/common/bvector.cc, src/common/bvector.h, src/expr/eeval.cc, src/expr/esetup.cc, src/moditm/d_setup.cc, src/stmt/ssetup.cc, src/stmt/strigger.cc:
	Many bug fixes.

	* src/moditm/misetup.cc:
	Do not move delay or event control when wrapping statements.

2002-12-26  Jimen Ching  <jching@core2>

	* EXAMPLES/ivl.sh:
	Fix detection of log file.  Cleanup shell command usage.

	* src/stmt/ssetup.cc, src/misc/msetup.cc, src/moditm/d_setup.cc, src/p_expr.cc:
	Detect unsupported constructs and report error.

	* src/common/bvector.h, src/expr/number.cc, src/common/bvector.cc:
	Add support for outputing strings.

	* src/expr/qstr.cc: Do not allocate more bits than necessary.

	* src/p_stmt.cc: Use error reporting API instead.

2002-12-21  Jimen Ching  <jching@core2>

	* src/expr/esetup.cc, src/expr/esetup.h, src/misc/lvalue.cc, src/misc/lvalue.h, src/misc/msetup.cc, src/misc/msetup.h:
	Specify size when setting up rval in assignment.

	* src/misc/decsetup.cc, src/misc/decsetup.h, src/stmt/ssetup.cc:
	Use correct statement when creating event cache.
	Specify size when setting up rval in assignment.

	* src/stmt/strigger.cc:
	Do not use parent when triggering pre/post assignment in for-loop.

	* src/moditm/misetup.cc:
	Schedule statement no matter whether there is a delay or not.

	* src/stmt/strigger.cc, EXAMPLES/contrib_inst.v, EXAMPLES/mi006_assign.v, EXAMPLES/stmt010_nbassign.v, EXAMPLES/wt_4_3p03p03p03p0.v, EXAMPLES/x_allev.v, EXAMPLES/x_counter.v, EXAMPLES/x_cport.v, EXAMPLES/x_dae.v, EXAMPLES/x_dump.v, EXAMPLES/x_gareth.v, EXAMPLES/x_inflp.v, EXAMPLES/x_monitor.v:
	$monitor/$strobe includes newline.

	* src/common/event.h, src/common/st_setup.cc, src/common/st_setup.h, src/common/st_task.cc, src/common/st_task.h, src/common/st_trig.cc, src/common/st_util.cc, src/expr/esetup.cc, src/expr/esetup.h, src/misc/decsetup.cc, src/misc/decsetup.h, src/misc/dectrig.cc, src/misc/dectrig.h, src/misc/evntexpr.cc, src/misc/evntexpr.h, src/misc/msetup.cc, src/moditm/d_setup.cc, src/moditm/misetup.cc, src/sim.cc, src/stmt/assign.h, src/stmt/loopstmt.cc, src/stmt/loopstmt.h, src/stmt/seqblk.cc, src/stmt/seqblk.h, src/stmt/ssetup.cc, src/stmt/ssetup.h, src/stmt/stmtbase.h, src/stmt/strigger.cc, src/stmt/taskenbl.cc, src/stmt/taskenbl.h:
	Fix event delays in nested blocks.

2002-12-14  Jimen Ching  <jching@core2>

	* src/misc/decrdwr.cc: Removed unused event type.

2002-11-27  Jimen Ching  <jching@core2>

	* EXAMPLES/ivl.sh: Updated to latest IVL test suite.

	* src/common/bvector.h: Do not access out-of-range indices.

	* src/common/st_util.cc, src/expr/number.cc: Support %T format.

	* src/expr/qstr.cc: Support empty qouted strings.

	* src/vbs.y: Parse unsupported constructs and report it.

2002-11-22  Jimen Ching  <jching@core2>

	* EXAMPLES/ivl.sh: Report why test cases are inconclusive.

	* src/vbs.y: Specify unsupported constructs.

	* src/common/st_util.cc, src/expr/esetup.cc, src/stmt/ssetup.cc:
	Scope list should only modify the module instance scope when setting
	up the function/task declarations.

	* src/vbs.y:
	Issue error or parser will not detect unsupported constructs.

	* src/common/event.h, src/vbs.y: Fix compile errors with g++ 3.2.

2002-11-21  Jimen Ching  <jching@core2>

	* EXAMPLES/ivl.sh: Handle erroneous test cases.

	* src/common/st_node.h, src/common/st_util.cc, src/expr/esetup.cc, src/moditm/d_setup.cc, src/moditm/misetup.cc, src/stmt/ssetup.cc, src/sim.cc:
	Use instance scope in hierarchical reference.

	* src/common/st_setup.cc: Correctly order the scopes.

	* src/common/dstack.h: Actually behave like a stack.

2002-11-16  Jimen Ching  <jching@core2>

	* src/common/sym_tab.cc, src/common/sym_tab.h:
	Do not waste time making a copy of the scope list.

	* src/common/tmpl_utl.h, src/stmt/strigger.cc:
	Put reference of list type in template parameter.

2002-11-14  Jimen Ching  <jching@core2>

	* src/common/bvector.cc:
	Clear result variable, because it is used in calculation algorithm.

	* src/common/hash.cc, src/common/hash.h, src/common/st_setup.cc, src/common/st_util.cc, src/common/sym_tab.cc, src/common/sym_tab.h, src/moditm/misetup.cc, src/sim.cc:
	Allow module instance name to be the same as module definition name.
	Fix scope lookup problem when this is allowed.

	* src/moditm/d_setup.cc: Code cleanup.
	Should only lookup net symbol in local scope when declaring it.

	* src/expr/esetup.cc, src/stmt/ssetup.cc: Code cleanup.

2002-11-02  Jimen Ching  <jching@core2>

	* src/common/st_setup.cc, src/moditm/misetup.cc, src/sim.cc:
	Moved file settings around for error reporting.

2002-10-30  Jimen Ching  <jching@core2>

	* src/common/error.cc, src/common/error.h, src/common/st_mod.h, src/common/st_setup.cc, src/moditm/misetup.cc, src/sim.cc:
	Display correct filename during error reporting.

2002-10-29  Jimen Ching  <jching@core2>

	* src/misc/dectrig.cc, src/misc/mtrigger.h, src/moditm/d_setup.cc, src/stmt/strigger.cc, src/stmt/strigger.h, src/expr/binary_op.cc, src/expr/binary_op.h, src/expr/concat.cc, src/expr/concat.h, src/expr/eeval.cc, src/expr/eeval.h, src/expr/esetup.cc, src/expr/esetup.h, src/expr/etrigger.cc, src/expr/exprbase.h, src/expr/funccall.cc, src/expr/funccall.h, src/expr/mintypmax.cc, src/expr/mintypmax.h, src/expr/number.cc, src/expr/number.h, src/expr/qstr.cc, src/expr/qstr.h, src/expr/rangeid.cc, src/expr/rangeid.h, src/expr/ternary_op.cc, src/expr/ternary_op.h, src/expr/unary_op.cc, src/expr/unary_op.h, src/common/bvector.h, src/common/dumpasc.cc, src/common/dumpvcd.cc, src/common/logic.h, src/common/st_eval.cc, src/common/st_eval.h, src/common/st_func.cc, src/common/st_func.h, src/common/st_net.cc, src/common/st_net.h, src/common/st_node.h, src/common/st_util.cc, src/common/bvector.cc:
	Optimize expression evaluation.

	* EXAMPLES/expr_invert.v, EXAMPLES/testv-all.tmpl:
	Corrected expression evaluation.

2002-10-28  Jimen Ching  <jching@core2>

	* src/misc/dectrig.cc, src/misc/delayid.cc, src/misc/delayid.h, src/misc/delaynum.cc, src/misc/delaynum.h, src/misc/evntexpr.cc, src/misc/evntexpr.h, src/stmt/ssetup.cc, src/stmt/strigger.cc, src/misc/decbase.h:
	Code cleanup.

	* src/misc/decsetup.cc: Conformance fix.

2002-05-31  Jimen Ching  <jching@core2>

	* EXAMPLES/ivl.sh:
	Deleted one error code, update return value checking.

2002-05-29  Jimen Ching  <jching@core2>

	* src/common/error.cc, src/common/error.h, src/common/st_mod.cc, src/common/st_mod.h, src/common/st_net.cc, src/common/st_net.h, src/common/st_setup.cc, src/common/st_util.cc:
	Remove check for complete net declaration.
	Inline some functions for optimization.

	* src/common/bvector.cc: Avoid memory references for optimization.

	* src/expr/funccall.cc, src/expr/funccall.h, src/expr/rangeid.cc, src/expr/rangeid.h:
	Inlined functions for optimization.

	* src/common/debug.cc, src/common/debug.h:
	Inline functions for optimization.

	* src/common/st_eval.cc, src/common/st_eval.h:
	Inline constructors of function objects for optimization.

	* src/common/event.h: Removed unnecessary code.

	* src/expr/erdwr.cc, src/expr/erdwr.h, src/expr/esetup.cc, src/expr/esetup.h, src/expr/etrigger.cc, src/expr/etrigger.h, src/expr/emon.cc, src/expr/emon.h:
	Inline constructors of function objects for optimization.

	* src/misc/port.cc, src/misc/port.h:
	Inline constructor of object for optimization.

	* src/misc/decrdwr.cc, src/misc/decrdwr.h, src/misc/decsetup.cc, src/misc/decsetup.h, src/misc/dectrig.cc, src/misc/dectrig.h, src/misc/mmon.cc, src/misc/mmon.h, src/misc/mrdwr.cc, src/misc/mrdwr.h, src/misc/msetup.cc, src/misc/msetup.h, src/misc/mtrigger.cc, src/misc/mtrigger.h, src/moditm/d_rdwr.cc, src/moditm/d_rdwr.h, src/moditm/d_setup.cc, src/moditm/d_setup.h, src/moditm/mirdwr.cc, src/moditm/mirdwr.h, src/moditm/misetup.cc, src/moditm/misetup.h, src/moditm/tfrdwr.cc, src/moditm/tfrdwr.h, src/moditm/tfsetup.cc, src/moditm/tfsetup.h, src/stmt/srdwr.cc, src/stmt/srdwr.h, src/stmt/ssetup.cc, src/stmt/ssetup.h, src/stmt/strigger.cc, src/stmt/strigger.h:
	Inline constructors of function objects for optimization.

2002-05-25  Jimen Ching  <jching@core2>

	* BUGS: Update bug list.

	* src/common/bvector.cc, src/common/bvector.h, src/common/logic.h:
	Optimize via inlining.
	Implement memory cache for logic array.

	* src/expr/eeval.cc, src/expr/esetup.cc: Remove unnecessary comparison.

2002-05-15  Jimen Ching  <jching@core2>

	* src/common/bvector.cc, src/common/bvector.h, src/common/logic.h:
	Code cleanup.  Reduce copy constructor calls.

2002-05-14  Jimen Ching  <jching@core2>

	* EXAMPLES/ivl.sh: Output script name when writing to log file.

	* src/vbs.y: Support more parser constructs.

	* src/moditm/mirdwr.cc: Do not access potentially null pointer.

2002-05-09  Jimen Ching  <jching@core2>

	* src/sim.cc: More C++ language conformance.

2002-05-04  Jimen Ching  <jching@core2>

	* src/common/event.h: Stricter C++ conformance.

2002-04-20  Jimen Ching  <jching@core2>

	* src/common/bvector.cc, src/common/bvector.h, src/common/st_func.cc, src/common/st_util.cc, src/expr/eeval.cc, src/stmt/strigger.cc:
	Code cleanup:
	Removed unused code.
	Made compare_* functions non-members.
	Eliminated unnecessary checks.

2002-03-21  Jimen Ching  <jching@core2>

	* src/Makefile.in: Remove all generated files with maintainer-clean.

2002-03-06  Jimen Ching  <jching@core2>

	* EXAMPLES/ivl.sh:
	Do not use negative number in return value for shell function.

	* src/Makefile.in: Delete generated sstream.

2002-03-05  Jimen Ching  <jching@core2>

	* src/misc/lvalue.h, src/misc/msetup.cc:
	Avoid using evaluate during setup procedure.

	* src/moditm/d_setup.cc: Bit select of integer type is reversed.

2002-03-04  Jimen Ching  <jching@core2>

	* src/common/st_func.h: Removed untrue comment.

2002-03-02  Jimen Ching  <jching@core2>

	* README:
	Make the next release a minor revision rather than just a patch level.

	* src/configure, src/configure.in: Fix scripting language checks.

2002-02-25  Jimen Ching  <jching@core2>

	* src/stmt/ssetup.cc:
	No need to use evaluate when we know the object is a number.
	Optimized out a copy constructor for the bit_vector.

2002-02-24  Jimen Ching  <jching@core2>

	* src/common/bvector.cc, src/common/bvector.h, src/expr/eeval.cc:
	Minor optimizations.

2002-02-21  Jimen Ching  <jching@core2>

	* src/common/bvector.cc: Minor performance improvements.

2002-02-11  Jimen Ching  <jching@core2>

	* src/common/dumpstrm.cc, src/common/error.cc, src/common/st_util.cc, src/expr/esetup.cc, src/misc/decsetup.cc, src/misc/msetup.cc, src/p_stmt.cc, src/stmt/ssetup.cc, src/swig/vbs_api.cc:
	Use standard conforming stringstream class.

	* src/configure, src/configure.in:
	Generate standard conforming sstream header.

	* EXAMPLES/ivl.sh:
	Display parameters to vbs when outputing error message.

2002-02-10  Jimen Ching  <jching@core2>

	* vbs.txt: Update documentation.  Some typo fixes.

	* EXAMPLES/ivl.sh: Generate more useful output in the logs.

2002-02-09  Jimen Ching  <jching@core2>

	* src/misc/lvalue.cc: Increment iterator to set entire list.

	* EXAMPLES/testv-all.tmpl, EXAMPLES/x_lvalue.v, src/Makefile.in:
	Test for new concatenated lvalue support.

	* EXAMPLES/ivl.sh: Typo: mismatched parameter test.

	* src/common/st_func.cc, src/common/st_func.h, src/common/st_net.cc, src/common/st_net.h, src/common/st_util.cc, src/expr/eeval.cc, src/expr/esetup.cc, src/misc/lvalue.cc, src/misc/lvalue.h, src/misc/mrdwr.cc, src/misc/msetup.cc, src/misc/mtrigger.cc, src/misc/mtrigger.h, src/moditm/d_setup.cc, src/p_expr.cc, src/p_expr.h, src/stmt/assign.cc, src/stmt/assign.h, src/stmt/strigger.cc, src/swig/vbs_api.cc, src/vbs.y:
	Support concatenated lvalue.

	* src/p_misc.cc, src/p_misc.h, src/p_stmt.cc, src/p_stmt.h:
	Move lvalue into appropriate file.

2002-02-07  Jimen Ching  <jching@core2>

	* src/sim.h: Included wrong header.  Use more appropriate p_types.h.

2002-02-03  Jimen Ching  <jching@core2>

	* src/moditm/d_int.cc, src/moditm/d_int.h, src/moditm/d_io.h, src/moditm/d_net.h, src/moditm/d_param.h, src/moditm/d_rdwr.cc, src/moditm/d_reg.h, src/moditm/d_setup.cc, src/moditm/tfbase.h, src/p_moditm.cc, src/p_moditm.h, src/p_types.h, src/vbs.y:
	Refactor declaration assignments.  Use common code to reduce code bloat.

	* src/expr/esetup.cc: Forgot to add copyright year.

	* src/expr/esetup.cc:
	Do not treat out-of-bound memory references as errors.

	* src/common/st_util.cc:
	Do not treat out-of-bound memory references as run-time errors.

2002-01-29  Jimen Ching  <jching@core2>

	* src/common/dumpstrm.h: Allow non-libz build.

2002-01-28  Jimen Ching  <jching@core2>

	* EXAMPLES/ivl.sh: Change inconclusive to unsupported...

2002-01-27  Jimen Ching  <jching@core2>

	* src/parser.c, src/sim.cc, src/sim.h, src/vbs.cc:
	Support vbpp as the preprocessor.

	* src/vbs.l:
	The `line directive specifies the number for the next line.

	* src/configure, src/configure.in: Make module name 'vbs'.

2002-01-24  Jimen Ching  <jching@core2>

	* src/vbs.l, src/vbs.y:
	Parse unsupported constructs and output an error.

	* src/sim.cc: Do not process module if a parse error occured.

2002-01-11  Jimen Ching  <jching@core2>

	* src/swig/vbs_api.cc, src/common/dumpvcd.cc, src/common/scp_tab.cc:
	Gcc 2.96 (RH7) is more C++ conforming, but not as conforming as gcc3.0.

	* src/configure, src/Makefile.in, src/configure.in:
	Build separate support for TCL and Perl scripting.

	* src/common/bvector.cc: Implement subtraction with borrow-in.

2002-01-10  Jimen Ching  <jching@core2>

	* src/common/bvector.cc:
	Treat '?' as high-impedance to make casex/casez work.
	For casex, '?' is supposed to be dont-care, but high-impedance has the
	same behavior.  So it should be ok.

	* src/common/scp_tab.cc, src/swig/vbs_api.cc: C++ conformance cleanups.

	* src/vbs.cc, src/vbs.l, src/vbs.y, src/parser.c, src/sim.cc:
	Improve error reporting and parsing.

	* src/common/error.cc, src/common/error.h:
	Shorten output to fit on a line.

2002-01-08  Jimen Ching  <jching@core2>

	* src/swig/vbs_api.cc: Conform to standard C++ language usage.

2002-01-06  Jimen Ching  <jching@core2>

	* src/misc/msetup.cc, src/misc/msetup.h, src/misc/portconn.cc, src/misc/portconn.h, src/moditm/misetup.cc:
	Discard blank port connections to module instances.

	* src/common/error.cc: _state is a bitmap, test accordingly.
	Avoid potential call of vbs_fatal in case vbs_warn returns.

	* src/common/st_setup.cc: Use a valid line number for error reporting.

	* src/vbs.l: Manually read // style comment.
	When reading a line, read until newline.

	* src/expr/binary_op.cc, src/expr/binary_op.h, src/expr/eeval.cc, src/p_expr.cc, src/vbs.y:
	Complete support for binary operators; nand, nor, xnor...

2002-01-05  Jimen Ching  <jching@core2>

	* src/common/bvector.cc, src/common/bvector.h, src/expr/eeval.cc, src/expr/erdwr.cc, src/expr/erdwr.h, src/expr/exprbase.cc, src/expr/exprbase.h, src/expr/unary_op.cc, src/expr/unary_op.h, src/p_expr.cc, src/vbs.y:
	Support all of the unary operators.

	* EXAMPLES/testv-all.tmpl: Pad unused decimal digits with white space.

	* src/moditm/d_setup.cc:
	Allow direction declaration before integer declaration.
	Used to cause error because the index order were different.

	* src/sim.cc: More consistent use of names.

	* src/common/st_util.cc: More unterminated string stream.

	* src/common/bvector.cc: Pad unused decimal digits with white space.

2002-01-04  Jimen Ching  <jching@core2>

	* src/stmt/assign.cc, src/stmt/assign.h, src/stmt/strigger.cc, src/misc/lvalue.h, src/misc/mtrigger.cc, src/misc/mtrigger.h:
	When queuing the non-blocking assignment, the left-hand target must
	also be evaluated.

2002-01-03  Jimen Ching  <jching@core2>

	* src/common/scp_tab.cc, src/sim.cc, src/swig/vbs_api.cc, src/swig/vbs_swig.i:
	Update scripting support from George V.

	* src/common/dumpvcd.cc: Fix from George V.:  typo

	* src/common/st_setup.cc:
	Allow an empty port connection to a module instantiation that has ports.

2002-01-01  Jimen Ching  <jching@core2>

	* EXAMPLES/ivl.sh, src/common/error.cc, src/common/error.h, src/expr/esetup.cc, src/stmt/ssetup.cc:
	Report unsupported system tasks/functions as a separate error.

2001-12-30  Jimen Ching  <jching@core2>

	* src/common/st_util.cc:
	When monitoring a bit, any change should trigger an event.
	I.e. if the bit changed from DC to Z or vis versa.

	* src/common/bvector.cc:
	Display 'z' if high-impedance.  Use blank/' ' as place holder.
	If right-hand-side is DC/Z, result of shift operators is unknown.

	* src/moditm/d_setup.cc:
	Schedule continuous assignment at least once at the end of time unit 0.
	Default wire declaration to high-impedance.

	* src/moditm/misetup.cc:
	Schedule continuous assignment at least once at the end of time unit 0.

	* src/sim.cc, src/sim.h, src/stmt/strigger.cc, src/vbs.cc, EXAMPLES/ivl.sh:
	Increased silent execution to match test suite log.

	* EXAMPLES/mi011_wiredecl.v, EXAMPLES/testv-all.tmpl:
	New results for initializing wire to high-impedance.
	Also, continuous assignment is now triggered, at least once, at the end
	of time unit 0.

	* src/misc/msetup.cc, src/moditm/d_setup.cc, src/p_stmt.cc, src/stmt/assign.cc, src/stmt/assign.h, src/stmt/strigger.cc:
	Differentiate between delay after equal sign in blocking and non-blocking
	assignment statements.

	* src/misc/decsetup.cc, src/misc/msetup.cc, src/p_stmt.cc, src/stmt/ssetup.cc:
	Terminate string stream for error output.

	* src/common/bvector.cc: Skip white space when checking decimal string.

	* src/common/st_util.cc: Read data a token at a time for readmemh/b.

	* src/common/bvector.cc: Extend shift return value to hold the result.
	Check decimal string for invalid values.
	If bit vector contains dont-care; return -1, instead of 0, to indicate error.

	* src/expr/esetup.cc:
	During setup, an index could be dont-care.  This is not an error.
	Indices are now checked at run-time, so it is ok to overlook it.

	* src/expr/eeval.cc:
	If a index is dont-care, return dont-care as result.

2001-12-29  Jimen Ching  <jching@core2>

	* src/moditm/d_net.cc, src/moditm/d_net.h, src/moditm/d_param.cc, src/moditm/d_param.h, src/moditm/d_rdwr.cc, src/moditm/d_reg.cc, src/moditm/d_reg.h, src/moditm/d_setup.cc, src/p_moditm.cc, src/p_moditm.h, src/p_types.h, src/vbs.y:
	Support register assignment declaration.
	Make assignment declaration consistant across declaration types.

2001-12-28  Jimen Ching  <jching@core2>

	* src/common/dumpvcd.cc, src/common/scp_tab.cc:
	str.compare() is not standard conformant in g++2.95.x.

	* src/moditm/d_setup.h, src/moditm/d_setup.cc:
	Correctly treat wire assignment declaration as continuous assignment.

2001-12-27  Jimen Ching  <jching@core2>

	* src/common/dumpvcd.cc, src/common/scp_tab.cc:
	Use byte limited compare for hierarchical names.

2001-12-26  Jimen Ching  <jching@core2>

	* src/common/dumpvcd.cc:
	Use new memory file size method to skip dump of memory variables.

	* src/common/st_net.h:
	New method to determine the size of a memory file.  This can also be used
	to determine if a net is a memory file, ie. size would be non-zero.

	* src/sim.cc: Reset error filename when performing setup/simulation.

	* src/common/st_util.cc, src/stmt/ssetup.cc, src/stmt/strigger.cc, src/stmt/taskenbl.cc, src/stmt/taskenbl.h:
	Add hierarchical name format string output.

	* src/common/scp_tab.cc:
	Make sure search was successful before accessing result.

	* src/configure, src/Makefile.in, src/configure.in:
	Typos for scripting support.

2001-12-24  Jimen Ching  <jching@core2>

	* src/configure, src/Makefile.in, src/configure.in, src/swig/vbs_swig.i:
	Allow the same library to be used for both Tcl and perl.

	* src/common/dumpvcd.cc: Update variable for future references.

	* src/misc/msetup.cc, src/misc/partsel.cc, src/misc/partsel.h:
	Optimize range selection since the expression is constant.

2001-12-23  Jimen Ching  <jching@core2>

	* src/common/dumpinfo.cc:
	Use C++ coding style to extract text from qouted string.
	This is more efficient too.

	* src/common/error.cc:
	Null terminate string stream to remove garbage at the end.

2001-12-22  Jimen Ching  <jching@core2>

	* src/swig/vbs_swig.i:
	Perl uses "list" as a macro name?  This is bad for C++/Perl combined code.

	* src/common/st_util.cc: Allow base16 to use non-aligned data.
	Increment the memory index for readmem after assignment.

	* EXAMPLES/ivl.sh:
	Place the test suite components in the current directory so the
	run-time paths are accessible.

	* src/config.h.in: Sync with new configure.in tests.

	* src/configure, src/Makefile.in, src/configure.in:
	New build method for scripting support.

	* src/swig/vbs_swig.i: Use standard header filename.

	* src/common/error.cc: Conform better to C++ standard.

2001-12-21  Jimen Ching  <jching@core2>

	* src/sim.h, src/sim.cc: Reorganized error handling.
	Moved dump processing into timewheel handler.
	These changes should make libvbs.so better suited for scripting.

	* src/parser.c, src/vbs.cc:
	Use callback to handle warnings and fatal errors.
	Moved POSIX code out of application file (vbs.cc -> parser.c).

	* src/common/error.cc, src/swig/vbs_api.cc:
	Use callback to handle warnings and fatal errors.

	* src/common/error.h:
	Made state value increase with the processing flow.

	* src/parser.h, src/stmt/strigger.cc: Updated comment.

2001-12-20  Jimen Ching  <jching@core2>

	* src/Makefile.in, src/common/st_net.cc, src/common/st_net.h, src/common/st_util.cc, src/sim.cc, src/stmt/readmem.cc, src/stmt/readmem.h, src/stmt/ssetup.cc, src/stmt/ssetup.h, src/stmt/stmtbase.h, src/stmt/strigger.cc, src/stmt/strigger.h:
	Add support for readmemb/h.

	* src/vbs.cc: Moved header inclusion closer to usage.

	* EXAMPLES/ivl.sh: Better parameter checking.
	Improved results output.

	* src/common/bvector.cc:
	Skip underscores when determining the number of digits in a number.

2001-12-15  Jimen Ching  <jching@core2>

	* src/configure, src/configure.in: Only specify -fPIC it needed.

	* src/common/logic.h: Make const so C++ can optimize away the inline.

2001-12-14  Jimen Ching  <jching@core2>

	* src/common/dumpinfo.cc, src/common/dumpinfo.h, src/common/dumpstrm.cc, src/common/dumpstrm.h, src/sim.cc, src/vbs.cc:
	Specify compression level from command line.

	* src/swig/vbs_api.cc: Use private strdup symbol for portability.

	* src/common/dumpvcd.cc, src/common/scp_tab.cc:
	Use operator instead of member function for a more natural style.

	* src/common/st_util.cc: Use standard symbol and scope.

	* src/Makefile.in: Build SWIG support if available.

	* src/vbs.cc: Remove Guile support.

	* src/swig/vbs_api.cc, src/swig/vbs_swig.i:
	SWIG support.  Replace guile with a more generic scripting support.

2001-12-11  Jimen Ching  <jching@core2>

	* src/common/st_util.cc:
	Simulation run-time check of out-of-range for evaluation also.

	* src/common/st_util.cc:
	Simulation run-time check for out-of-range memory access.

	* src/common/dumpvcd.cc, src/common/scp_tab.cc:
	$dumpvar fixes from G.V.

2001-12-07  Jimen Ching  <jching@core2>

	* src/common/bvector.cc, src/common/bvector.h, src/common/logic.h, src/expr/eeval.cc, src/expr/erdwr.cc, src/expr/erdwr.h, src/expr/unary_op.cc, src/expr/unary_op.h, src/p_expr.cc, src/vbs.y:
	Support unary and/or/xor operators.

	* src/expr/binary_op.h: Remove unnecessary enumeration.

	* src/expr/binary_op.cc:
	Force compile warning if new operator is added without updating
	the switch statement.

2001-12-05  Jimen Ching  <jching@core2>

	* src/configure, src/Makefile.in, src/configure.in, src/install-sh:
	Removed Guile, replaced with SWIG.
	Add install target.
	Build libvbs.a|so and link to vbs.

	* src/expr/emon.cc, src/expr/emon.h, src/expr/esetup.cc, src/misc/bitsel.cc, src/misc/bitsel.h, src/misc/mmon.cc, src/misc/mmon.h, src/misc/partsel.cc, src/misc/partsel.h, src/misc/selbase.h, src/Makefile.in:
	Allow monitoring of an identifier in a bit select.

2001-12-04  Jimen Ching  <jching@core2>

	* src/expr/qstr.cc: Qouted string is a contant expression.

2001-12-03  Jimen Ching  <jching@core2>

	* src/common/dumpstrm.cc: Forgot namespace scoping.

2001-12-02  Jimen Ching  <jching@core2>

	* BUGS: New bug that will take a while to fix.

	* README: Mention namespace is now needed.
	Mention how to submit patches.  Also available in the FAQ.
	New features for next release.

	* FAQ: Instructions for VCD/ASCII waveform dumping.

	* EXAMPLES/testv-all.tmpl:
	Treat decimal integer constants as 32bit values.

	* src/moditm/d_setup.cc: Set net type names correctly.

	* src/common/bvector.cc: Default decimal integer to 32bits.

	* EXAMPLES/ivl.sh: Count unsupported errors as inconclusive.

2001-12-01  Jimen Ching  <jching@core2>

	* src/common/st_util.cc, src/expr/esetup.cc, src/expr/esetup.h, src/stmt/ssetup.cc:
	Refactored symbol lookup.  Use common function to lookup nested scope.

	* src/vbs.y: Allow scoped task/function enable.

	* src/expr/esetup.cc, src/p_expr.cc:
	Return better error code for unsupported 'concatenated lvalue' error.

	* src/moditm/func.cc, src/moditm/func.h, src/moditm/mibase.h, src/moditm/task.cc, src/moditm/task.h, src/p_moditm.cc:
	Re-order tf declaration to expose symbol to task/function enable.

2001-11-30  Jimen Ching  <jching@core2>

	* src/misc/decrdwr.cc, src/misc/decsetup.cc, src/misc/dectrig.cc, src/misc/delayid.cc, src/misc/delayid.h, src/p_misc.h, src/vbs.y, src/p_misc.cc:
	Support delay by expression (not just delay by identifier).

	* EXAMPLES/ivl.sh, src/Makefile.in:
	Use shell script to process IVL test suite.

	* src/common/dumpstrm.cc, src/vbs.cc:
	Exit with more consistent return values.

2001-11-29  Jimen Ching  <jching@core2>

	* src/moditm/mirdwr.cc, src/stmt/srdwr.cc:
	Do not save non-existant objects.

2001-11-27  Jimen Ching  <jching@core2>

	* src/p_stmt.cc:
	Non-blocking assignment "a <= b" is the same as "a <= #0 b".

	* EXAMPLES/testv-all.tmpl: Update output of non-blocking assignment.

	* EXAMPLES/stmt010_nbassign.v: Swap register contents.  Better test.

	* src/configure, src/Makefile.in, src/configure.in:
	Remove check for X11.

2001-11-24  Jimen Ching  <jching@core2>

	* src/common/dumpstrm.cc:
	Null terminate stringstream before writing to output file.

	* src/common/dumpvcd.cc: Code cleanup.

	* src/common/error.cc: Clarify the requirement for a top-level module.

	* src/misc/decbase.h, src/misc/dectrig.cc, src/misc/dectrig.h, src/stmt/strigger.cc, src/stmt/strigger.h:
	Correctly handle delay of zero.

2001-11-23  Jimen Ching  <jching@core2>

	* src/common/bvector.cc, src/common/bvector.h, src/expr/eeval.cc, src/tests/testbv.cc:
	Support divide and modulo operators.

2001-11-21  Jimen Ching  <jching@core2>

	* src/common/dumpvcd.cc: Do not process empty net list.

	* src/moditm/misetup.cc: Setup identifier used as parameter.

2001-11-15  Jimen Ching  <jching@core2>

	* src/common/st_util.cc, src/stmt/strigger.cc:
	Support %% format specifier.

2001-11-14  Jimen Ching  <jching@core2>

	* src/p_stmt.cc, src/sim.cc, src/stmt/stmtbase.h, src/stmt/strigger.cc:
	To support "always @(ec) #1 ;" constructs, a new event control object
	was needed.  Re-arranged the trigger of the delay or event control
	to handle this new object.

	Updated the time wheel handler to repeatedly run always statements.
	This better conforms to IEEE-1364.

	* src/stmt/ssetup.h:
	Moved delay or event control setup into common function.

	* src/stmt/ssetup.cc: Removed some dead code.
	Moved delay or event control setup into common function.

	* src/stmt/assign.cc, src/stmt/case.cc, src/stmt/ifelse.cc, src/stmt/loopstmt.cc, src/stmt/seqblk.cc, src/stmt/taskenbl.cc:
	Move display output into common function.

	* src/moditm/misetup.cc:
	Place statements from 'initial' and 'always' constructs into time wheel
	for processing, as described by IEEE-1364.

	Setup new event control object to support: "always @(ec) #1 ;" constructs.

	* src/misc/decbase.h, src/misc/dectrig.cc, src/misc/dectrig.h, src/misc/delayid.cc, src/misc/delayid.h, src/misc/delaynum.cc, src/misc/delaynum.h, src/misc/evntexpr.cc, src/misc/evntexpr.h:
	Triggering delay or event control now returns whether statement was
	placed on time wheel or event queue.

	* EXAMPLES/testv-all.tmpl: Corrected timing deviation.

	* src/common/dumpstrm.cc: Use C++ semantics.

	* src/common/time_whl.h: More informative debug output.

2001-11-11  Jimen Ching  <jching@core2>

	* src/p_stmt.cc:
	Move a procedural timing control statement into a sequential block to
	avoid a double delay/event control.

	* src/common/st_util.cc: Specify index in case it is a memory variable.

	* src/expr/concat.cc: Increment iterator so it is not displayed twice.

	* src/expr/eeval.cc: Return zero for repeat count of zero.

	* src/expr/esetup.cc:
	Initialization unnecessary, set by called function.

	* src/vbs.l: Allow spaces between the base specifier and the number.

	* src/stmt/stmtbase.h: Output null statement.

2001-11-08  Jimen Ching  <jching@core2>

	* src/moditm/d_setup.cc:
	Default output declaration of a port to 'wire' type.

	* src/common/st_setup.cc:
	Place parent scope at the top of the stack to allow recursive calls (task).

	* src/common/st_net.cc: Use proper name for new declarations.

	* src/vbs.l: Typo; using wrong qoute character.

2001-11-02  Jimen Ching  <jching@core2>

	* src/p_stmt.cc, src/p_stmt.h, src/vbs.l, src/vbs.y:
	Fix ternary operator precedence.
	Support additional constructs:
		delay or event control in non-blocking assignment
		hierarchical identifiers

	* src/Makefile.in: New test cases.
	Fix generated files dependencies.

	* src/vbs.cc: Remove unneccesary command line option.

	* EXAMPLES/x_hier.v, EXAMPLES/expr_ternary.v, EXAMPLES/mi011_wiredecl.v, EXAMPLES/testv-all.tmpl:
	Updated test cases for new features.

2001-10-31  Jimen Ching  <jching@core2>

	* src/expr/esetup.cc: Must use explicit scope when searching hierarchy.

	* src/common/st_setup.cc: Formating improvement.

2001-10-30  Jimen Ching  <jching@core2>

	* BUGS, src/moditm/d_net.cc, src/moditm/d_net.h, src/moditm/d_param.h, src/moditm/d_rdwr.cc, src/moditm/d_setup.cc, src/p_moditm.cc, src/p_moditm.h, src/p_types.h, src/vbs.y:
	Implement net declaration assignment.

2001-10-29  Jimen Ching  <jching@core2>

	* src/moditm/d_param.h: Unnecessary header.

2001-10-28  Jimen Ching  <jching@core2>

	* src/common/st_setup.cc:
	Place parent scope at the top of the stack to allow recursive calls.

	* src/common/st_util.cc:
	Allow a function call to pass constant numbers as parameters.

	* src/common/sym_tab.cc:
	Do not empty out scope variable, might be used again later.

	* src/vbs.y: Stricter conformance with IEEE-1364.

	* EXAMPLES/x_taskdec.v:
	Task definition does not allow input declarations.

	* src/common/st_util.cc, src/expr/number.cc: Support %t output format.

	* src/p_expr.cc: Support unsized constant numbers.

	* src/sim.cc:
	Filename was missing a period before the extension when report error.

	* EXAMPLES/contrib_net1.v:
	Remove unsupported (and unnecessary) construct.

	* BUGS: Update with new features.

	* src/p_misc.cc:
	Do not bother keeping an empty port list in module definition.

	* src/expr/esetup.cc, src/expr/esetup.h:
	Implement hierarchical reference.

	* src/moditm/cassign.cc: Output first object once only.

2001-10-27  Jimen Ching  <jching@core2>

	* EXAMPLES/stmt002_bassign.v, EXAMPLES/testv-all.tmpl, src/common/bvector.cc:
	Typo, using wrong index.

	* src/common/st_util.cc: Allow both indices to be used.

	* src/common/bvector.cc: Left pad number.

	* src/common/error.cc, src/common/error.h, src/moditm/misetup.cc:
	Detect recursive module instantiations.

	* src/common/hash.h: Add comprison operator for recursion checking.

	* src/common/dstack.h:
	Allow iterating through content.  Needed by recursion checking.

	* src/expr/emon.cc:
	Function call argument expressions can be monitored.

	* src/Makefile.in: Add target to run through IVL test suite.

	* src/p_expr.cc, src/p_expr.h, src/vbs.y:
	Parse lvalue concatenation.  Use yytext in parse error reporting.

	* src/parser.h, src/configure, src/config.h.in, src/configure.in:
	Detect declaration format of yytext.

	* src/Makefile.in:
	Fixup dependencies so vbs_yacc.h.h don't get generated.
	Run config.status if Makefile.in changes.

2001-10-26  Jimen Ching  <jching@core2>

	* src/common/st_setup.cc, src/expr/esetup.cc:
	Stricter error checking on task and function enables.

	* src/moditm/always.cc, src/moditm/d_int.cc, src/moditm/d_io.cc, src/moditm/d_net.cc, src/moditm/d_param.cc, src/moditm/d_reg.cc, src/moditm/func.cc, src/moditm/initial.cc, src/moditm/task.cc:
	Cleanup display format.

	* src/stmt/assign.cc, src/stmt/case.cc, src/stmt/ifelse.cc, src/stmt/loopstmt.cc, src/stmt/seqblk.cc, src/stmt/taskenbl.cc:
	Cleanup 'display' format.

2001-10-14  Jimen Ching  <jching@core2>

	* EXAMPLES/y_namedarg.v, src/Makefile.in, src/moditm/misetup.cc:
	Do not segment on unsupported feature.

	* EXAMPLES/testv-all.tmpl, EXAMPLES/x_range2.v, src/Makefile.in:
	New test for register ranges.

-------------------------------------------------------------------------------
2001-09-29  Jimen Ching  <jching@core2>

	* src/Makefile.in: New target to create tarball.

	* README: New release information.

	* src/configure, src/configure.in:
	Update version number for new release.

	* FAQ, vbs.txt: Informations were out of date.

	* COPYRIGHT: Update year list.

	* CONTRIBUTORS: I moved.

	* BUGS: Updated to reflect the latest features.

2001-09-28  Jimen Ching  <jching@core2>

	* src/configure src/configure.in:
	Change tests for HPUX to make it more generic.

2001-09-26  Jimen Ching  <jching@core2>

	* src/configure: Better algorithm for detecting getopt.

	* src/config.h.in, src/configure.in, src/vbs.cc:
	Better algorithm for detecting getopt.
	Define macro needed on HPUX.

2001-08-30  Jimen Ching  <jching@core2>

	* src/configure, src/configure.in:
	Check for sstream so it can be created if not exist.

2001-08-14  Jimen Ching  <jching@core2>

	* src/common/st_setup.cc, src/common/st_trig.cc, src/common/st_trig.h, src/stmt/strigger.cc:
	Bug fix: delay inside task definition statement causing event starvation.

	* EXAMPLES/testv-all.tmpl, EXAMPLES/x_taskdec.v, src/Makefile.in:
	New test case to verify bug fix.

2001-08-05  Jimen Ching  <jching@core2>

	* EXAMPLES/expr_concat.v, EXAMPLES/testv-all.tmpl, src/expr/concat.cc, src/expr/concat.h, src/expr/eeval.cc, src/expr/esetup.cc, src/p_expr.cc, src/p_expr.h, src/vbs.y:
	Add support for multiple concatenation.

2001-07-31  Jimen Ching  <jching@core2>

	* src/guile/guile_api.cc, src/guile/vbs_guile.cc, src/guile/vbs_guile.h:
	Code cleanup.

	* src/expr/number.cc: Use C++ style header inclusion.

	* src/common/sym_tab.cc: C++ conformance.

	* src/vbs.cc, src/stmt/strigger.cc: Use C++ style header inclusion.

2001-07-29  Jimen Ching  <jching@core2>

	* src/tests/testbv.cc, src/tests/testptr.cc, src/tests/testtw.cc:
	Update to latest API.

	* src/guile/guile_api.cc: Use C++ style header.

	* src/common/combase.h, src/common/dstack.h, src/common/dumpasc.cc, src/common/dumpasc.h, src/common/dumpinfo.cc, src/common/dumpinfo.h, src/common/dumpstrm.cc, src/common/dumpstrm.h, src/common/dumpvcd.cc, src/common/dumpvcd.h, src/common/error.cc, src/common/error.h, src/common/event.h, src/common/scp_tab.cc, src/common/scp_tab.h, src/common/st_func.h, src/common/st_mod.h, src/common/st_mon.h, src/common/st_net.h, src/common/st_setup.cc, src/common/st_setup.h, src/common/st_task.h, src/common/st_trig.cc, src/common/st_util.cc, src/common/st_util.h, src/common/sym_tab.h, src/common/time_whl.h, src/common/tmpl_utl.h, src/expr/concat.h, src/expr/emon.cc, src/expr/emon.h, src/expr/erdwr.h, src/expr/esetup.cc, src/expr/funccall.h, src/misc/decrdwr.h, src/misc/decsetup.cc, src/misc/decsetup.h, src/misc/delaynum.cc, src/misc/delaynum.h, src/misc/evntexpr.h, src/misc/module.h, src/misc/mrdwr.h, src/misc/msetup.cc, src/misc/msetup.h, src/moditm/cassign.h, src/moditm/d_int.h, src/moditm/d_io.h, src/moditm/d_net.h, src/moditm/d_param.h, src/moditm/d_rdwr.h, src/moditm/d_reg.h, src/moditm/d_setup.h, src/moditm/func.h, src/moditm/mirdwr.cc, src/moditm/mirdwr.h, src/moditm/misetup.h, src/moditm/modinst.h, src/moditm/task.h, src/moditm/tfrdwr.h, src/p_expr.cc, src/p_misc.cc, src/p_moditm.cc, src/p_stmt.cc, src/stmt/case.h, src/stmt/seqblk.h, src/stmt/srdwr.cc, src/stmt/srdwr.h, src/stmt/ssetup.cc, src/stmt/ssetup.h, src/stmt/taskenbl.h:
	More C++ conformance.  Use typedef's more consistently.

	* src/misc/delayid.h: Unnecessary typedef.

	* src/expr/eeval.cc: Constructor needs correct type, so cast.

	* src/common/hash.cc, src/common/hash.h: Use object typedefs.

	* src/sim.cc: Better C++ conformance.

	* src/common/bvector.cc, src/common/bvector.h, src/common/logic.h:
	C++ cleanup.

	* src/vbs.cc: Use C++ style headers.

2001-07-22  Jimen Ching  <jching@core2>

	* src/stmt/stmtbase.h, src/moditm/mitfbase.h, src/moditm/tfbase.h, src/moditm/mibase.h, src/misc/partsel.h, src/misc/portconn.cc, src/misc/portconn.h, src/misc/selbase.h, src/misc/decbase.h, src/misc/lvalue.cc, src/misc/lvalue.h, src/misc/module.cc, src/misc/port.cc, src/misc/port.h:
	Avoid using ostream from global scope.

	* src/misc/bitsel.h, src/expr/exprbase.cc, src/expr/exprbase.h, src/expr/number.h, src/common/st_node.h:
	Update copyright.

	* src/misc/bitsel.h: Avoid using ostream from global scope.

	* src/expr/number.h:
	Make function prototype consistent with definition.

	* src/expr/exprbase.h, src/expr/exprbase.cc, src/common/st_node.h:
	Avoid using ostream from global scope.

	* src/configure, src/configure.in:
	Check GCC major version also, when detecting -frepo.

2000-11-01  Jimen Ching  <jching@core2>

	* EXAMPLES/mi006_assign.v: Correct comment.

2000-10-31  Jimen Ching  <jching@core2>

	* src/common/debug.cc, src/common/debug.h:
	Removed GNU C++ extension dependencies.

	* src/vbs.cc: Made ANSI compliant.

	* src/vbs.l: Cleanup warning.

	* src/common/event.h:
	Embedded type is used by public, so make it available.

2000-09-08  Jimen Ching  <jching@core2>

	* src/common/dumpstrm.cc: Casting wrong variable.

	* src/common/dumpasc.h: Whoops, duplicate typedef statement.

2000-05-11  Jimen Ching  <jching@core2>

	* EXAMPLES/testv-all.tmpl:
	Removed version info from output.  Diff's should show less junk.

	* src/common/dumpinfo.cc, src/stmt/ssetup.cc, src/sim.cc, src/vbs.cc:
	When the format is not specified at the command line, and the Verilog
	code enables one of the $dump* system tasks, default the format to VCD.

2000-05-03  Jimen Ching  <jching@core2>

	* src/vbs.l: Parse preprocessor directives explicitly.

	* src/vbs.cc: Do not enable VCD dump by default.  Add arg to enable it.

	* src/common/dumpinfo.cc:
	Do not process dump messages if format not specified (null ptr reference).

2000-04-30  Jimen Ching  <jching@core2>

	* src/tests/testst.cc: Update to new st_node_base contructor signature.

2000-04-15  vgeorge  <vgeorge@core2>

	* src/common/dumpvcd.cc: Net changed reset upon read

	* src/common/st_util.cc: net.changed reset upon read

2000-04-12  Jimen Ching  <jching@core2>

	* src/common/hash.cc: Use 16bit storage while calculating hash value.

	* src/common/sym_tab.cc: Passing wrong value into rehash.

2000-04-11  Jimen Ching  <jching@core2>

	* CHANGELOG, CONTRIBUTORS: Per request.

	* CONTRIBUTORS: Updated comment to reflect additional contributions.

	* src/common/bvector.h, src/expr/eeval.cc, src/common/bvector.cc:
	add multiply operator to bvector.

2000-03-13  vgeorge  <vgeorge@core2>

	* src/common/dumpvcd.h:
	Changes for dump header creation from scopetable info

	* src/stmt/ssetup.cc:
	Changes for dump header creation from netlist in scope table

	* src/moditm/misetup.cc: Instance level now registered.

	* src/common/scp_tab.cc, src/common/scp_tab.h:
	Changes for dump header creation from netlist in scope table

	* src/common/dumpvcd.cc:
	Changes for dump header creation from netlist in scope table
	Also this fixes "lvls" problem..

	* src/common/dumpstrm.cc: casting of c_in_length..

	* src/common/dumpinfo.cc, src/common/dumpinfo.h:
	Changes for dump header creation from netlist in scope table

	* src/common/dumpasc.h:
	Changes for dump header creation from scope table info

	* src/common/dumpasc.cc: create header now gets info from scopetable.

2000-03-11  vgeorge  <vgeorge@core2>

	* src/common/dumpstrm.h:
	_compress added for displaying compressed file extension.

	* src/common/dumpinfo.cc: Compressed file extension displayed properly.

	* src/vbs.cc: Spelling correction for --dump_compress

	* src/stmt/ssetup.cc:
	dumpvars setup to turn on dump. This lets time 0 events to dump values.

2000-03-06  Jimen Ching  <jching@core2>

	* src/Makefile.in, src/vpi_user.c, src/vpi_user.h:
	Added support for VPI.

	* src/parser.c: Cleanup header.

2000-03-06  vgeorge  <vgeorge@core2>

	* src/common/dumpvcd.cc:
	puts the time at the end of vcd dump, to get dinotrave display
	the last segment.

	* src/sim.cc, src/common/dumpinfo.h, src/stmt/ssetup.cc, src/stmt/strigger.cc, src/common/dumpinfo.cc:
	dumpvars; support

2000-03-05  vgeorge  <vgeorge@core2>

	* src/common/dumpinfo.cc: Changes for default dump file name vbs.dmp

	* src/common/dumpinfo.h: changes for default dump file name vbs.dmp

	* src/stmt/strigger.cc: executing dumpvars should turn on dump - LRM

2000-03-03  vgeorge  <vgeorge@core2>

	* src/stmt/dumptsk.cc, src/stmt/dumptsk.h, src/common/scp_tab.h, src/common/scp_tab.cc:
	Header update

	* src/guile/vbs_guile.h: Header added

	* src/guile/vbs_guile.cc: Header update

	* src/guile/guile_api.cc: Header updated.

	* src/stmt/strigger.cc: dump_values removed..

	* src/common/dumpasc.h, src/common/dumpinfo.h:
	dumpon/off/all related changes

	* src/common/dumpinfo.cc: dumpall/dumpon/dumpoff related changes

	* src/common/dumpvcd.h: dumpon/off/all related changes

	* src/common/dumpvcd.cc: dumpon/dumpoff/dumpall related changes

	* src/common/dumpasc.cc: dumpon/off/all task related changes

2000-02-26  Jimen Ching  <jching@core2>

	* src/common/scp_tab.h, src/common/dumpasc.cc, src/common/dumpasc.h, src/common/dumpinfo.cc, src/common/dumpinfo.h, src/common/dumpstrm.cc, src/common/dumpstrm.h, src/common/dumpvcd.cc, src/common/dumpvcd.h, src/common/scp_tab.cc, src/sim.cc, src/sim.h, src/vbs.cc, src/Makefile.in, src/configure, src/config.h.in, src/configure.in:
	Add dump compression support.

2000-02-18  Jimen Ching  <jching@core2>

	* src/common/dumpvcd.cc: Remove reference to "top".

2000-02-17  Jimen Ching  <jching@core2>

	* EXAMPLES/mi006_assign.v, src/expr/emon.cc:
	Handle ternary expressions in continuous assignment.

	* EXAMPLES/x_dump.v: Dump from top level.

	* src/sim.cc: Add comment about fast simulation.

	* src/moditm/misetup.cc: Save instance scope for dump.

	* src/common/dumpvcd.cc, src/common/scp_tab.cc, src/common/scp_tab.h, src/sim.cc:
	Remove use of "top" as top level module instance name.

2000-02-16  Jimen Ching  <jching@core2>

	* src/stmt/strigger.cc, src/stmt/ssetup.cc:
	For now, set dump file in first pass setup.

	* src/common/error.cc, src/common/error.h, src/stmt/ssetup.cc:
	Cleanup error checking.  Added error code.

	* src/sim.cc: Add toplevel module name to scope table.

2000-02-15  Jimen Ching  <jching@core2>

	* src/expr/esetup.cc: Temp checkin, what does this mod do?

2000-02-14  vgeorge  <vgeorge@core2>

	* src/guile/guile_api.cc, src/guile/vbs_guile.h:
	updates for Jimen new sim.cc. Can execute small guile scripts now.

2000-02-11  Jimen Ching  <jching@core2>

	* src/common/scp_tab.cc, src/sim.cc: Clean up compiler warnings.

2000-02-10  Jimen Ching  <jching@core2>

	* src/common/time_whl.h, src/sim.cc, src/sim.h, src/stmt/strigger.cc, src/vbs.cc:
	Modified startup procedure to support tcl/guile.
	Enabled dump output (but still does not work).

	* EXAMPLES/x_dump.v: Test case for $dump API.

2000-02-01  Jimen Ching  <jching@core2>

	* src/common/st_task.h, src/common/st_util.cc, src/common/sym_tab.h, src/moditm/misetup.cc, src/stmt/ssetup.cc, src/stmt/ssetup.h, src/stmt/stmtbase.h, src/stmt/strigger.cc, src/stmt/strigger.h, src/Makefile.in, src/common/st_func.cc, src/common/st_func.h, src/common/st_inst.cc, src/common/st_inst.h, src/common/st_mod.cc, src/common/st_mod.h, src/common/st_net.cc, src/common/st_net.h, src/common/st_node.h, src/common/st_setup.cc, src/common/st_task.cc, src/sim.cc:
	Added $dump API from George Varughese <vgeorge@computer.org>.
	$dump* from the simulator does not yet work.  No actual output is
	generated.  But the code is stable enough to commit.

	* src/stmt/dumptsk.cc, src/stmt/dumptsk.h, src/common/scp_tab.cc, src/common/scp_tab.h:
	George Varughese <vgeorge@computer.org>: $dump API.

	* src/common/dumpvcd.cc, src/common/dumpvcd.h, src/common/dumpasc.h, src/common/dumpinfo.cc, src/common/dumpinfo.h, src/common/dumpasc.cc:
	George Varughese <vgeorge@computer.org>: $dump* API.

2000-01-31  Jimen Ching  <jching@core2>

	* src/vbs.cc: Code cleanup.

2000-01-30  Jimen Ching  <jching@core2>

	* src/parser.h, src/vbs.l, src/p_expr.cc, src/parser.c:
	Rename my_strdup to vbs_strdup.

	* src/guile/guile_api.cc:
	George Varughese <vgeorge@acm.org>: usability changes.

2000-01-27  Jimen Ching  <jching@core2>

	* src/guile/guile_api.cc, src/sim.cc, src/sim.h, src/vbs.cc:
	vgeorge@computer.org: cleaned up libguile support.

2000-01-24  Jimen Ching  <jching@core2>

	* CONTRIBUTORS: Added George Varughese <vgeorge@computer.org>.

	* src/vbs.l, src/vbs.y:
	vgeorge@computer.org: scoping identifier support.

	* src/Makefile.in: Opps, minor syntax error.

	* src/configure: Sync with configure.in

	* src/Makefile.in, src/config.h.in, src/configure.in, src/guile/guile_api.cc, src/guile/vbs_guile.cc:
	Added Guile support.

-------------------------------------------------------------------------------
Mon Oct 19 21:10:17 1999  Jimen Ching <jching@flex.com>

	* [sim.cc]
	Fixed compiler warning about variable being clobbered by longjmp.

Wed Sep 1 12:37:21 1999  anonymous

	* [sim.cc random.cc random.h ..]
	Added $random system function.

-------------------------------------------------------------------------------
Sat Sep 26 21:23:40 1998  Jimen Ching <jching@flex.com>

	* [configure.in]
	Added --with-template-depth to fix problems with latest egcs compiler.
	Used better method of detecting the need for -frepo.

	* [Makefile.in]
	Changed assignment of VPATH to fix Makefile generation problem.
	Other cleanups for Debian 2.0.

Sat Sep 19 10:11:23 1998  Jimen Ching <jching@flex.com>

	* [sim.cc]
	Test return value of string.find_last_of for error conditions.
	Fixed compile errors from latest egcs and libc6 (glibc2).

-------------------------------------------------------------------------------
Sat Feb 14 19:30:14 1998  Jimen Ching  <jching@flex.com>

	* [vbs.cc]
	Changed option letters.

Thu Feb 5 10:26:34 1998  Jimen Ching  <jching@flex.com>

	* [configure.in Makefile.in *.*]
	Compilable by egcs 1.0.x.

-------------------------------------------------------------------------------
Fri Dec 26 22:19:28 1997  Jimen Ching  <jching@flex.com>

	* [event.h]
	Added nonblock_event for non-blocking assignment.

	* [vbs.y]
	Fixed bug where invert (~) did not accept expressions in parenthesis.
	Fixed bug where a parser error could segfault.

Sat Dec 13 13:41:48 1997  Jimen Ching  <jching@flex.com>

	* [emon.cc]
	Fixed constant in continuous assignment.

	* [msetup.cc]
	Port connections can now be expressions.

Sun Dec  7 22:52:19 1997  Jimen Ching  <jching@flex.com>

	* [misc/dectrig.cc expr/rangeid.cc]
	Fixed bug where event control in loop causes segfault.

Sat Dec  6 17:52:58 1997  Jimen Ching  <jching@flex.com>

	* [p_expr.* expr/concat.* expr/esetup.cc expr/etrigger.cc vbs.y]
	Added concatenation expression (for right-hand-value only).

	* [sim.cc]
	Added --quite option to not display statistics.

-------------------------------------------------------------------------------
Sun Nov 30 20:42:22 1997  Jimen Ching  <jching@flex.com>

	* [event.h]
	Moved event name output into base class.

	* [sim.cc]
	Use pid for temporary file.
	Use setjmp/longjmp to remove temporary file in case of parse error.

Sun Nov 30 01:40:26 1997  Jimen Ching  <jching@flex.com>

	* [sim.cc]
	Added CPU time and event count to end of simulation.

	* [esetup.cc]
	range_id index should be calculated on every setup, not just once.

Fri Nov 28 22:33:54 1997  Jimen Ching  <jching@flex.com>

	* [msetup.cc d_setup.cc misetup.cc]
	Set scope when adding new node to symbol table.

	* [d_setup.cc]
	Cleaned up error checking in net declaration.

	* [st_net.cc]
	Fixed bug where _storage in st_net is not deleted with
	'delete []' for cases that need it.

Thu Nov 27 17:15:37 1997  Jimen Ching  <jching@flex.com>

	* [sim.cc]
	Fixed temporary file name construction.

-------------------------------------------------------------------------------
Sat Sept 27 11:33:10 1997  Jimen Ching  <jching@flex.com>

	* [d_setup.* d_param.* st_setup.* misetup.*]
	Added support for parameter value assignment in module instantiation.

Thu Sept 7 23:01:08 1997  Jimen Ching  <jching@flex.com>

	* [d_setup.* d_param.* p_moditm.c p_types.h vbs.y]
	Added support for parameter declaration.

Thu Sept 6 11:00:15 1997  Jimen Ching  <jching@flex.com>

	* [error.*]
	Made error messages into class.

Thu Sept 6 10:36:20 1997  Jimen Ching  <jching@flex.com>

	* [Makefile]
	Cleaned up some targets

-------------------------------------------------------------------------------
Thu Aug 14 10:50:35 1997  Jimen Ching  <jching@flex.com>

	* [common/st_setup.cc]
	Display variable name when declaration is incomplete, instead of
	the module name.

Wed Jun 29 09:26:41 1997  Jimen Ching  <jching@flex.com>

	* [expr/mintypmax.* p_expr.* vbs.y]
	Added support for mintypmax expression.

Wed Jun 11 21:36:11 1997  Jimen Ching  <jching@flex.com>

	* [bvector.*]
	Made bit_vector more IEEE Std 1364 compliant.

Wed Jun 7 14:15:27 1997  Jimen Ching  <jching@flex.com>

	* [eeval.*] [etrigger.*] [p_expr.*] [p_types.h] [vbs.l/y]
	Added support for ternary operator (?:).

-------------------------------------------------------------------------------
Tue Apr 8 22:54:00 1997  Jimen Ching  <jching@flex.com>

	* [sim.cc] [common/sym_tab.*]
	Free module objects before starting simulation.

Mon Apr 7 22:28:00 1997  Jimen Ching  <jching@flex.com>

	* [sim.cc] [moditm/modinst.*] [common/st_mod.*]
	Removed requirement that the top-level module be named main.

-------------------------------------------------------------------------------
Thu Apr 4 21:15:00 1997  Jimen Ching  <jching@flex.com>

        * [FAQ] [README]
	Changed my email address.