# $Header: README,v 1.2 97/02/27 13:16:08 space Exp $

Demonstration of substrate resistance extraction using the option -B.
From the section "Examples" in the Space Substrate Resistance
Extraction User's Manual.

STEPS
=====

1.  Make project, use scmos_n technology and lambda = 0.1 (micron)
    % mkpr -p scmos_n -l 0.1 projectname

Rest assumes that you and your files are in the project directory.

2.  Use cgi to put oscil layout into the database.
    % cgi sub3term.gds

3.  Use e.g. the layout editor Xdali to inspect the layout.
    % Xdali sub3term

4.  Compile the element definition file.
    % tecc elem.s

5.  Perform an extraction of cell sub3term in batch mode.
    Extract substrate resistances and coupling capacitances.
    % space3d -v -E elem.t -P param.p -B sub3term
    Or perform an interactive extraction of cell sub3term.
    % Xspace -E elem.t -P param.p
    (Click button "sub3term" in the menu "database", click button 
    "3D sub. res." in the menu "options", click button "DrawBEMesh" 
    and "DrawGreen" in the menu "display", and click "extract" in 
    the menu "Extract".)

6.  Inspect the spice description of the extracted circuit.
    % xspice -a sub3term

