NAME

       vcd2vzt - Converts VCD files to VZT files

SYNTAX

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

DESCRIPTION

       Converts VCD files to VZT files.

OPTIONS

       -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.

       -t,--twostate
              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.

       -h,--help
              Show help screen.

       EXAMPLES

       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.

LIMITATIONS

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

AUTHORS

       Anthony Bybell <bybell@rocketmail.com>

SEE ALSO

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