Provided by: gtkwave_3.3.34-1_i386 bug


       gtkwave  -  Visualization  tool  for  VCD, LXT, LXT2, VZT, FST, and GHW


       gtkwave [option]... [DUMPFILE] [SAVEFILE] [RCFILE]


       Visualization tool for VCD, LXT, LXT2, VZT, FST, and GHW.   VCD  is  an
       industry  standard simulation dump format. LXT, LXT2, VZT, and FST have
       been designed specifically for use with gtkwave.   GHW  is  the  native
       VHDL  format generated by GHDL.  Native dumpers exist in Icarus Verilog
       and the open  source  version  of  VeriWell  for  the  LXT  formats  so
       conversion  with  vcd2lxt(1)  or  vcd2lxt2(1)  is not necessary to take
       direct advantage of LXT with those simulators.  AET2 files can also  be
       processed  provided  that  libae2rw  is  available  but this is only of
       interest to people who use IBM EDA toolsets.


       -n,--nocli <directory name>
              Use file requester for dumpfile name.

       -f,--dump <filename>
              Specify dumpfile name.

              generate/use VCD recoder fastload files.  This is similar to the
              -g,--giga  option,  however  the  spill  file  generated  is not
              deleted.  Reloading the VCD file another  time  (either  through
              pressing  the reload button or by re-invoking gtkwave at a later
              time) will use this generated spill file rather  than  read  the
              value  change  section  of  the  VCD  file.   This will speed up
              reloads on large files greatly as only the variable  declaration
              section  needs  to be parsed.  Note that the spill file contains
              the file size and modification date of the VCD file in order  to
              detect if it is stale and needs to be regenerated.

              optimize VCD to FST.  This will automatically call vcd2fst(1) to
              perform the file conversion.  This option is highly  recommended
              with  large  VCD  files in order to cut down on the memory usage
              required for file viewing.  Can  be  used  in  conjunction  with

       -a,--save <filename>
              Specify  savefile name.  Useful suffixes for desktop integration
              are .gtkw and .sav (deprecated).

              Assume savefile is suffix modified dumpfile name  (i.e.,  remove
              and replace with ".gtkw").

       -r,--rcfile <filename>
              Specify override .gtkwaverc filename.

       -l,--logfile <filename>
              Specify  simulation  logfile  name.   Multiple  logfiles  may be
              specified by preceding each with the command flag.  By selecting
              the numbers in the text widget, the marker will immediately zoom
              to the specific time value.

              If there is not a .gtkwaverc  file  in  the  home  directory  or
              current  directory  and  it  is  not explicitly specified on the
              command line, when  this  option  is  enabled,  do  not  use  an
              implicit  configuration  file  and  instead  default  to the old
              "whitescreen" behavior.

       -D,--dualid <which>
              Specify multisession  identifier  information.   The  format  of
              "which"  is  m+nnnnnnnn where m is the session number 0 or 1 and
              nnnnnnnn is a hexadecimal value indicating the shared memory  ID
              of  an  array  of  two  gtkwave_dual_ipc_t data structures.  The
              intended use of this flag is for front ends such as twinwave(1).

       -s,--start <time>
              Specify start time for LXT2/VZT block skip.

       -e,--end <time>
              Specify end time for LXT2/VZT block skip.

       -t,--stems <filename>
              Specify stems  file  for  source  code  annotation.   This  will
              automatically  launch  the  rtlbrowse(1)  helper  process.   See
              vermin(1) for information on stems file generation.

       -c,--cpu <numcpus>
              Specify number of CPUs available for parallelizable  ops  (e.g.,
              block prefetching on VZT reads).

              Disable  window  manager  for most windows.  The intended use of
              this is to be used in  conjunction  with  the  --script  option,
              however  this  also  can  be  used to reparent into an alternate
              window manager.

              Do not  render  menubar.  This  is  mainly  used  for  making  a
              restricted  applet  that  cannot  initiate  file I/O on its own,
              however it also can be used as a workaround in earlier  versions
              of  GTK+ that do not handle GTKSocket/GTKPlug focus interactions

       -S,--script <filename>
              Specify Tcl command script file for execution.

       -T,--tcl_init <filename>
              Specify Tcl command script to be  loaded  on  startup.   Implies
              --wish command flag.

              Enable  Tcl  command  line on stdio.  All script commands can be
              typed in on stdin.

       -R,--repscript <filename>
              Specify Tcl command script for periodic execution.

       -P,--repperiod <value>
              Specifies delay in milliseconds between successive executions of
              the repscript.  Default is 500.

       -X,--xid <XID>
              Specify XID of window for a GtkPlug to connect to.  GTKWave does
              not directly render to a  window  but  instead  renders  into  a
              GtkPlug expecting a GtkSocket at the other end.  Note that there
              are issues with  accelerators  working  properly  so  menus  are
              disabled  in  the  componentized  version  of  GTKWave  when  it
              functions as a plug-in.

       -1,--rpcid <RPCID>
              Specify RPCID of GConf session.  This is a decimal value zero or
              greater  and is the identifier used by GConf to know what update
              data to listen to.  This option only works if  --with-gconf  was
              specified during ./configure.

       -2,--chdir <DIRNAME>
              Specify  new  current working directory.  This is typically used
              in OSX to run gtkwave if it was compiled and placed in  an  .app
              bundle.   Note that if the environment variable GTKWAVE_CHDIR is
              defined, the argument is a dummy argument. This  is  to  support
              OSX in that the open command has difficulty in passing spaces as
              command line arguments and it is possible for pwd(1)  to  return

              Restore previous default (0) or  --rpcid RPCID numbered session.
              This only works for one dumpfile, savefile, rcfile, and  current
              working  directory  so  it  has the effect of restoring the most
              recently loaded file.  If used in conjunction with  the  --rpcid
              option,  that  option  must  be specified earlier in the command
              line than the --restore option.  If RPCID is not specified, then
              the  default  of  0  is used.  This option only works if --with-
              gconf was specified during ./configure.

              Specifies that "interactive" VCD mode is to be used which allows
              a viewer to navigate a VCD trace while GTKWave is processing the
              VCD file.  When this option is used, the filename is  overloaded
              such  that  it is the hexadecimal value for the shared memory ID
              of a writer.  Note that the  shared  memory  ID  can  be  passed
              straight  from  stdin by using the --vcd option; see the manpage
              for shmidcat(1) for more details.

              Specifies that the viewer should use legacy VCD mode rather than
              the  VCD  recoder.   Note  that  using  legacy mode will require
              considerably more  memory  than  the  recoder  and  its  use  is
              discouraged for very large traces.

              Specifies  that  the  viewer should use gigabyte mempacking when
              recoding (possibly slower).  This is equivalent to  setting  the
              vlist_spill and vlist_prepack flags in the rc file.

              Specifies  that the viewer should use compressed hierarchy names
              when loading the dumpfile (available for VCD recoder, LXT, LXT2,
              and  VZT).   This  will  use  less  memory  at  the  expense  of
              compression/decompression delay.

              Use stdin as a VCD dumpfile.

       -O,--output <filename>
              Specify  filename  for  stdout/stderr  redirect.    To   disable
              messages to the console, use /dev/null as the filename.

              Enable  slider  stretch  zoom  for  the  horizontal time slider.
              Clicking then dragging the very left or right edge of the slider
              can be used to provide fine-grained real-time zooming.

              Display version banner then exit.

              Display help then exit.

              Exit after loading trace (for loader benchmarking).


       ~/.gtkwaverc (see manpage gtkwaverc(5))


       To run this program the standard way type:
              gtkwave dumpfile.vcd

       Alternatively you can run it with a save file as:
              gtkwave dumpfile.vcd dumpfile.gtkw

       To run interactively using shared memory handle 0x00050003:
              gtkwave -I 00050003 dumpfile.gtkw

       To  pick  up  a  dumpfile  automatically  from  a save file (e.g., when
       launching from an icon):
              gtkwave --save dumpfile.gtkw

       To run from the app bundle in OSX using /bin/sh:
              GTKWAVE_CHDIR=`pwd`;export GTKWAVE_CHDIR;open -n -W  -a  gtkwave
              --args --chdir dummy --dump des.vzt --save des.gtkw

       Alternatively,       run       the      following      Perl      script  to  process  command   line
       arguments from OSX shell scripts.

       Note  that  to  pass non-flag items which start with a dash, that it is
       required to specify -- in order to turn off flag parsing.  A second  --
       will  disable  parsing of any following arguments such that they can be
       passed on to Tcl scripts and retrieved via gtkwave::getArgv.

       Command line options are not necessary for representing  the  dumpfile,
       savefile,  and  rcfile  names.   They  are  merely  provided  to  allow
       specifying them out of order.


       AIX requires  -bmaxdata:0x80000000  (-bmaxdata:0xd0000000/dsa  for  AIX
       5.3)  to  be  added  to your list of compiler flags for xlc if you want
       GTKWave to be able to access more than 256MB  of  virtual  memory.  The
       value  shown  allows the VMM to use up to 2GB (3.25GB AIX5.3). This may
       be necessary for very large traces.

       Shift and Page operations using  the  wave  window  hscrollbar  may  be
       nonfunctional  as  you  move  away  from  the dump start for very large
       traces. A trace that goes out to 45 billion ticks  has  been  known  to
       exhibit  this  problem. This stems from using the gfloat element of the
       horizontal slider to encode the time value for  the  left  margin.  The
       result is a loss of precision for very large values. Use the hotkeys or
       buttons at the top of the screen if this is a problem.

       When running under Cygwin, it is required to enable Cygserver if shared
       memory  IPC is being used.  Specifically, this occurs when rtlbrowse(1)
       is launched as a helper process.  See the Cygwin documentation for more
       information on how to enable Cygserver.


       Anthony Bybell <>


       gtkwaverc(5)  lxt2vcd(1)  vcd2lxt(1)  vcd2lxt2(1) vzt2vcd(1) vcd2vzt(1)
       vermin(1) rtlbrowse(1) twinwave(1) shmidcat(1)