Circuit Analysis and Simulation with Transmission-Line Emphasis
CASTLE is a new circuit code that is a hybrid between an MNA (modified nodal analysis) code such as SPICE and a transmission-line code (such as BERTHA). It is designed for the Windows platform.
Download the public release of CASTLE2 here. Updated 23Nov11
Many new features:
Several times faster for large simulations
Improved ribbon-bar interface
Improved drawing features
And, much more!
Download the first public release of CASTLE here. This zip file includes the executable file, help file, documentation, and some examples.