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VCD2LXT(1) Filetype Conversion VCD2LXT(1) NAME vcd2lxt - Converts VCD files to interlaced or linear LXT files SYNTAX vcd2lxt [VCDFILE] [LXTFILE] [option]... DESCRIPTION Converts VCD files to interlaced or linear LXT files. Noncompressed inter- laced files will provide the fastest access, linear files will provide the slowest yet have the greatest compression ratios. OPTIONS -stats Prints out statistics on all nets in VCD file in addition to per- forming the conversion. -clockpack Apply two-way subtraction algorithm in order to identify nets whose value changes by a constant XOR or whose value increases/decreases by a constant amount per constant unit of time. This option can re- duce dumpfile size dramatically as value changes can be represented by an equation rather than explicitly as a triple of time, net, and value. -chgpack Emit data to file after being filtered through zlib (gzip). -linear Write out LXT in "linear" format with no backpointers. These are re-generated during initialization in gtkwave. Additionally, use libbz2 (bzip2) as the compression filter. -dictpack <size> Store value changes greater than or equal to size bits as an index into a dictionary. Experimentation shows that a value of 18 is op- timal for most cases. EXAMPLES Note that you should specify dumpfile.vcd directly or use "-" for stdin. vcd2lxt dumpfile.vcd dumpfile.lxt -clockpack -chgpack -dictpack 18 This turns on clock packing, zlib compression, and enables the dic- tionary encoding. Note that using no options writes out a normal LXT file. vcd2lxt dumpfile.vcd dumpfile.lxt -clockpack -linear -dictpack 18 Uses linear mode for even smaller files. AUTHORS Anthony Bybell <bybell@rocketmail.com> SEE ALSO lxt2vcd(1) vcd2lxt2(1) gtkwave(1) Anthony Bybell 1.3.34 VCD2LXT(1)
NAME | SYNTAX | DESCRIPTION | OPTIONS | EXAMPLES | AUTHORS | SEE ALSO
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