VCD2VZT(1)                    Filetype Conversion                   VCD2VZT(1)

       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 timesteps.

       -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

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

       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)

Anthony Bybell                      3.1.21                          VCD2VZT(1)