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       vcd2vzt - Converts VCD files to VZT files


       vcd2vzt [option]... [VCDFILE] [VZTFILE]


       Converts VCD files to VZT files.


       -v,--vcdname <filename>
              Specify VCD input filename.

       -l,--vztname <filename>
              Specify VZT output filename.

       -d,--depth <value>
              Specify 0..9 gzip compression depth, default is 4.

       -m,--maxgranule <value>
              Specify  number  of granules per section, default is 8.  One granule is equal to 32

       -b,--break <value>
              Specify break size (default = 0 = off).  When the break size is exceeded,  the  VZT
              dumper  will  dump  all  state  information  at  the  next  convenient granule plus
              dictionary boundary.

       -z,--ziptype <value>
              Specify zip type (default = 0 gzip, 1 = bzip2, 2  =  lzma).   This  allows  you  to
              override  the  default  compression  algorithm  to  use a more effective one at the
              expense of greater runtime.  Note that bzip2 does not decompress as fast as gzip so
              the viewer will be about two times slower when decompressing blocks.

              Forces  MVL2  twostate  mode  (default is MVL4).  When enabled, the trace will only
              store 0/1 values for binary facilities.  This is useful for  functional  simulation
              and will speed up dumping as well as make traces somewhat smaller.

       -r, --rle
              Uses an bitwise RLE compression on the value table.  Default is off.  When enabled,
              this causes the trace data table to be stored  using  an  alternate  representation
              which can improve compression in many cases.

              Show help screen.


       Note that you should specify dumpfile.vcd directly or use "-" for stdin.

       vcd2vzt dumpfile.vcd dumpfile.lxt --depth 9 --break 1073741824
              This sets the compression level to 9 and sets the break size to 1GB.

       vcd2vzt dumpfile.vcd dumpfile.lxt --depth 9 --maxgranule 512
              Allows  more  granules  per  section  which  allows  for greater compression at the
              expense of memory usage.


       vcd2vzt does not store glitches as these are coalesced  together  into  one  value  change
       during the writing of the VZT file.


       Anthony Bybell <>


       vzt2vcd(1) lxt2vcd(1) vcd2lxt2(1) gtkwave(1)