read_verilog - read a verilog file
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   read_verilog [-c] [-h] [-u] [-F] <file_name>

   Reads a verilog file into VIS. Internally the file is transformed into an
   equivalent blif-mv file, which is then read into VIS. The existing hierarchy
   for the blif-mv file previously read in is overwritten upon a successful
   read. If an error is detected while reading a file, the previous hierarchy
   is preserved.

   Command options:

   -c
          Use explicit clocking.

   -h
          Print the command usage.

   -u
          Turn off loop unroling.

   -F
          Ignore all timing.

   <file_name>
          Verilog file to be read in.
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   Last updated on 20100410 00h02