New Features added
------------------


New Commands in AIM-Postprocessor
=================================

Preferences in the Format menu
------------------------------
   Lets you change preference values. This command displays a dialog box.
Your preferences will be saved in AIMGPP.INI on exit if "Save settings on 
exit" is active. The values are restored the next time you load AIM-
Postprocessor.

Add FFT Plot in the Graph menu
------------------------------
   This command lets you create FFT (Fast Fourier Transform) graphs from the 
graph that was active when you chose the command. The command is useful for
examining the spectrum of the output on non-linear circuits. A dialog box
is displayed in response of this command.
   The drop down list box contains a list of all traces contained in the
active graph. One of the traces is selected. The other two fields in the
dialog box displays the number of data points in the selected trace  and the
suggested number of samples to use when transforming the trace.
AIM-Postprocessor transforms each trace individually and creates two new
graphs for each trace. One contains the amplitude of the original trace as a
function of frequency, and the other contains the phase.
   When AIM-Postprocessor transforms a trace it creates a new set of 
datapoints where the number of points is equal to the number of samples you 
specified in the dialog box. The datapoints is equally spaced in the time 
interval. This is done with linear interpolation on the original datapoints.
The new set of datapoints are then transformed.
   The resolution in frequency is the reciprocal of extent in time, and extent
in frequency is proportional to the number of samples used. So, if you want 
higher resolution in the frequency domain you have to run the transient 
analysis for a longer time in AIM-Spice. Run the circuit for many cycles if 
necessary.
   One thing to mention at last is that AIM-Postprocessor transforms all
traces, not only those that is a function of time. It's your responsibility to
create meaningful transforms.


New and Obsolete Commands in AIM-Spice
======================================

Preferences in the Options menu (New Command)
---------------------------------------------
   Lets you change preference values. This command displays a dialog box.
Your preferences will be saved in AIMSPICE.INI on exit if "Save settings on 
exit" is active. The values are restored the next time you load AIM-Spice.


Auto Scale in the Format menu in Analysis Mode (New Command)
------------------------------------------------------------
   By choosing this command, you reset the y-axis limits to fit the simulated
results. This command can also be used during a simulation to enlarge the
y-axis if the simulated results goes beyond the y-axis intercval. This command
can also be invoked with the Alt+U keycombination.


Analysis Limits (Obsolete Command)
----------------------------------
   This command is deleted and this operation is now part of the command
Select Variables to Plot.



Evaluation Version Limitation
-----------------------------

This evaluation version of AIM-Spice is limited in various ways:
  - Maximum number of nodes in a circuit is 20
  - Maximum number of transistors in a circuit is 10
  - The C-V model described in section 3.12 in the book is not available