TKGate 2.0

Copyright (C) 1987-2007 by Jeffery P. Hansen

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

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.


  1. Introduction to TkGate
  2. Using the Editor
  3. Working with Modules
  4. HDL Modules
  5. Using the Simulator with TkGate
  6. Gate Microcode and Assembly Compiler (gmac)
  7. Making Virtual Peripheral Devices (VPDs)
  8. Setting TkGate Options
  9. TkGate Library Components
  1. List of Built-In Gate Types
  2. List of System Tasks
  3. List of Simulator Error Messages
  4. Using the Verga Simulator in Stand-Alone Mode
  5. Sample Gmac Input File