This document contains information about running PSpice on a 
Macintosh II.

PSpice, being a circuit analyzer, does not interact with the user. Very 
little about its operation is different than the operation of PSpice on 
any other machine for which we make a PSpice.

To run PSpice:
¥	double click on the PSpice application;
¥	select open from the File Menu;
¥	choose an input (circuit net list) file;
¥	choose an output file.
	
To abort a simulation without quitting PSpice:
¥	type a . (period) while holding down the Apple key.

To abort PSpice, either:
¥	click on the close box;
¥	select Quit from the file menu

Note that once a circuit file has been run (without errors), you may 
double click on its icon to re-run it.  This enables you to run long 
analyses overnight.  Read under Extended Capabilities for more 
information on this.

If you run PSpice under a shell (the MPW shell, for example), be aware 
that typing:

	PSpice eval.cir eval.out

will not behave as typing the same line on an IBM PC would. On the 
Macintosh, all files passed to PSpice are treated as input files, 
whereas on the PC, you may specify the output filename along with the 
input filename. On the Macintosh, both eval.cir AND eval.out will be 
treated as input files.



Extended Capabilities

PSpice's Macintosh features are limited, due to the nature of the 
application:
¥	You may move the window around on the screen
¥	You may make the window shrink down to nothing by clicking on the 
Zoom box while holding down the Option key.  (The next click on the Zoom 
box restores the window.)
¥	You may make the display appear in color by selecting Color 
Monitor in the Color Menu.
¥	You may select About PSpice under the Apple Menu to get the 
version number and your ID number.
¥	You may define a list of folders in thich to search for Libraries.  
See under Libraries later on.
¥	You may (optionally) have PSpice change the Finder information for 
a file if it completes a simulation without errors such that you may 
Shift-Click on a number of files to re-simulate.  This is useful if you 
want to make a change to a component value after you have simulated 
once.  Select Miscellaneous under the File Menu for more information.

Application Memory Size
PSpice is set up to run in a 1024K region.  This will enable you to 
simulate a circuit of about 10 transistors which is the limit for this 
evaluation version (the production version is limited only by the amount 
of memory available.)


Libraries
We have incorporated an indexing scheme into the library search 
mechanism to speed up access.  For each library XXX.LIB, there is a 
corresponding XXX.IND which has information concerning the members of 
the library, such as the offset from the beginning where each .MODEL and 
.SUBCKT may be found.  The XXX.IND files are automatically rebuilt 
whenever an inconsistency is encountered.

You may define a sequence of folders in which to search for libraries 
you circuit may need.  The Libraries under the File Menu enables you to 
define and delete, as well as to view, the list of folders in which 
libraries are searched.  When PSpice encounters a .LIB statement, it 
will first search the folder in which the circuit files is in;  second, 
the list of folders you specified, in the order you specified;  last, 
PSpice will search the PSpice folder.  Select Libraries under the File 
Menu for more information.

The Library search path, along with window placement information is 
saved in a file named PSpicePreference in the root folder on your hard 
disk.  The Library information will become invalid if you restore a 
backed-up system from tape.  In this case, you must delete the 
PSpicePreference file or your simulations will fail.


