---
name: "vbs"
section: "1"
platform: "linux"
package: "vbs"
version: "1.4.0-9"
release: "Debian 4.0 (Etch)"
platforms: ["linux"]
url: "https://new.carta.tech/vbs"
---

# vbs(1)

simulate Verilog behavioral descriptions

## NAME

vbs - simulate Verilog behavioral descriptions

## SYNOPSYS

**vbs** \[*OPTION*\]... *SOURCE*...

## DESCRIPTION

Simulate SOURCE files.

**-a**, **--ascii\_dump**

-

  Dump using ascii format.

**-c**, **--compile-only**

-

  Stop after compilation, do not simulate. Currently, the compiled object file cannot be used for anything useful.

**-d**, **--debug-enable**=*TYPE*

-

  Enables the specified TYPE of debug output, where TYPE is one of the following: sim\_state, parser, symbol\_table, time\_wheel, event, user\[1-4\], userx. This option may be used multiple times, but is only available if debug is enabled.

**-D**, **--define**

-

  Define macro for preprocessing (only for vpp).

**-E**, **--preprocess-only**

-

  Stop after preprocessing, do not compile.

**-I**, **--incdir**

-

  Search directory for include files (only for vpp).

**-l**, **--debug-outfile**=*FILE*

-

  Specifies the file to write debug output. If not specified and debug is enabled, output will go to stdout. Available only if debug is enabled.

**-q**, **--quiet**

-

  Do not output statistics. This option may be used multiple times.

**-v**, **--vcd\_dump**

-

  Dump using VCD format.

**-x**, **--delays**={min,typ,max}

**-z** *#*

-

  Compress dumpfile with zlib at the specified compression level, # (from 1 to 9).

**-h**, **--help**

-

  Display this message.

## AUTHOR

Written by Lay Hoon Tho and Jimen Ching.

This manual page was written by Shaun Jackman \<sjackman@debian.org\> for the Debian system.

## REPORTING BUGS

Report bugs to Jimen Ching \<jching@flex.com\>.

## COPYRIGHT

Copyright 1995, 1996, 1997, 2001 Lay Hoon Tho, Jimen Ching

This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

## SEE ALSO

http://www.flex.com/~jching/