NAME¶
vcd2lxt2 - Converts VCD files to LXT2 files
SYNTAX¶
vcd2lxt2 [
option]... [
VCDFILE] [
LXTFILE]
DESCRIPTION¶
Converts VCD files to LXT2 files.
OPTIONS¶
- -v,--vcdname <filename>
- Specify VCD input filename.
- -l,--lxtname <filename>
- Specify LXT2 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 timsteps.
- -b,--break <value>
- Specify break size (default = 0 = off). When the break size
is exceeded, the LXT2 dumper will dump all state information at the next
convenient granule plus dictionary boundary.
- -p,--partialmode <mode>
- Specify partial zip mode 0 = monolithic, 1 = separation.
Using a value of 1 expands LXT2 filesize but provides fast access for very
large traces. Note that the default mode is neither monolithic nor
separation: partial zip is disabled.
- -c,--checkpoint <mode>
- Specify checkpoint mode. 0 is on which is default, and 1 is
off. This is disabled when the break size is active.
- -h,--help
- Show help screen.
EXAMPLES¶
Note that you should specify dumpfile.vcd directly or use "-" for
stdin.
- vcd2lxt dumpfile.vcd dumpfile.lxt --depth 9 --break
1073741824
- This sets the compression level to 9 and sets the break
size to 1GB.
- vcd2lxt dumpfile.vcd dumpfile.lxt --depth 9 --maxgranule
256
- Allows more granules per section which allows for greater
compression.
LIMITATIONS¶
vcd2lxt2 does not store glitches as these are coalesced together into one
value change during the writing of the LXT2 file.
AUTHORS¶
Anthony Bybell <bybell@rocketmail.com>
SEE ALSO¶
lxt2vcd(1) vcd2lxt2(1) gtkwave(1)