NAME

       tkgate - Tcl/Tk based digital circuit editor and simulator

SYNOPSIS

       tkgate [-xqs] [-X script] [-l file] [-p file] [-P printer] [files...]

DESCRIPTION

       TkGate  is  a  graphical  editor  and  event  driven simulator for digital circuits with a
       tcl/tk-based interface.  Supported circuit elements include basic gates (AND,  OR,  etc.),
       tri-state   gates,   adders,   multipliers,   registers,  memories  and  mos  transistors.
       Hierarchical design is also supported with support for user defined modules.   Save  files
       are based on the Verilog netlist format.

       TkGate documentation can be found at:

       http://www.tkgate.org

OPTIONS

       The options are as follows:

       -X script      Automaticaly  start  the  simulator  and  execute  the specified simulation
                      script.

       -p file        Print circuit to file without starting GUI.

       -P printer     Print circuit to printer without starting GUI.

       -l file        Read the specified file as a library.

       -x             Automaticaly start the simulator.

       -q             Suppress startup messages.

       -s             Excute with a synchronous X server connection.  This  option  is  primarily
                      for debugging.

       -L lang        Specify  a  locality  to  use  if  tkgate  has  been configued for Japanese
                      support.  The locality should be either "ASCII" for English, or "ja_JP.EUC"
                      for  Japanese.  This  option  can  also  be  set  via  the LANG environment
                      variable.

HISTORY & CREDITS

       TkGate begin life as an undergraduate project at Carnegie Mellon University (CMU) in 1987.
       At  that  time  it  was  called  simply  'gate'  and  ran under the 'wm' window manager, a
       windowing system developed at CMU before X11 was widely used.  In this incarnation it  was
       used  by  students  in  the  computer  architecture  course  at  CMU  to  develop a simple
       microprocessor (dubbed "The Bat Computer").  After laying dormant for  several  years,  it
       was  resurrected  in  1991  and  ported  to  run  under  X11  with  the Xlib API.  In this
       incarnation it was used several times  by  students  in  the  introductory  digital  logic
       course, but after the author graduated and left CMU, it went into hibernation again.  This
       Tcl/Tk incarnation was begun in 1998.  While there is certainly  some  cruftyness  in  the
       implementation  in  places due to the multiple reincarnations, many new features have been
       added since the older wm and X11 versions, and the interface has been made much easier  to
       use.

SEE ALSO

       gmac(1)

AUTHOR

       Jeffery Hansen (hansen@tkgate.org)

COPYRIGHT

       Copyright (c) 1987-2007 by Jeffery Hansen

                                                                                        TKGATE(1)