Hacker Chronicles 2/HACKER2.BIN/921.README.DOC

Text File | 1990-04-30 | 10KB | 211 lines

Note: a good book to get you going on spice is "COMPUTER-AIDED CIRCUIT
ANALYSIS USING SPICE"  By Walter Banzhaf (a Prentice Hall Publication)


1.0) Introduction

     This file describes how to setup and run the Prentice-Hall "student"
     version of PSpice and Probe.

     PSpice is an analog circuit simulator.  It calculates the voltages and
     currents of a circuit under a variety of different circumstances, such as
     DC, AC, and in time.  The program SPICE was developed at the University of
     California at Berkeley in the early 1970's and has become a de facto
     standard in the area of analog simulation.  The input and output of PSpice
     conform to that standard.  Also, PSpice has many extensions which give it
     a wide applicability.

     Probe is a waveform viewer.  It displays the results from PSpice
     graphically and interactively.  If you think of PSpice as a "software
     breadboard", then think of Probe as a "software oscilloscope".

     Also included in this package is the Monte Carlo analysis option for
     PSpice.  Monte Carlo analysis allows tolerances to be assigned to
     component values and used in repeated simulations.  This option is built
     into the student version of the PSpice program.

2.0) System Configuration

     PSpice will run on the IBM PC and PS/2 families of computers, including
     machines based on the 8088, 8086, 80286, and 80386.  PSpice needs 512
     kilobytes of memory (RAM).  Either the monochrome or color display may be
     used.  Any printer may be used.  For this student version of PSpice the
     floating-point co-processor (8087, 80287, or 80387) is optional.  If
     present the program will run at full speed.  Otherwise it will run 5-15
     times slower.  The production version requires the co-processor; it is not
     optional.

     PSpice runs under MSDOS 2.0+ and requires the system to have been booted
     with a CONFIG.SYS file which contains the statement:

          FILES=16

     It is also recommended that the CONFIG.SYS file contain the statement:

          BUFFERS=16

     All of these comments apply to Probe, also.

3.0) Running PSpice

     PSpice is 1 program and 1 overlay file (PSPICE1.EXE and PHSPICE.OVL).  For
     systems with a fixed disk, simply copy the all the files on both diskettes
     into a directory and then start PSpice with the command:

          PSPICE input-file output-file

     For systems without a fixed disk, you must have the program and overlay
     file on diskettes in drives A and B.  Diskette 1 goes into drive A;
     diskette 2 goes into drive B.  Also, you must have both drives in a DOS
     PATH command, such as:

          PATH A:; B:

     See your DOS manual for more information on the PATH command.  Once this
     is done, PSpice is run with the command:

          FPSPICE input-file output-file

     For all the above cases, the input-file and output-file may have path
     names.  The program files, too, can be on any directory specified by a
     previous DOS PATH command.

     The input file must be specified, but its extension need not be.  Its
     extension defaults to .CIR.  The output file is optional, its name
     defaults to the input file's name and its extension defaults to .OUT.
     This command will run EXAMPLE1.CIR and put the results into a file named
     EXAMPLE1.OUT:

          PSPICE EXAMPLE1

     If the input file is not specified you will be prompted for it.  The
     output file may be a device, such as the printer.  This command would run
     EXAMPLE1 to the printer:

          PSPICE EXAMPLE1 PRN

     assuming that you have the standard DOS reserved names.

4.0) Format of the Input and Output Files

     The input and output files are ordinary text files and follow the same
     rules as those for the UC Berkeley SPICE program, version 2G.6, with these
     omissions:

     1)   There is no distortion (.DISTO) analysis.  We recommend using the
          .TRAN and .FOUR to calculate harmonic distortion.  This method
          correctly accounts for clipping, which .DISTO does not.

     2)   There is no .ALTER command.

     In addition, numerous enhancements to the Berkeley SPICE have been added
     including GaAs MESFET devices, Monte Carlo analysis, ideal switches, non-
     linear transformers, and standard parts libraries. For more details on
     these and other PSpice enhancements, the PSpice User's Guide may be
     purchased separately from the PSpice program.

5.0) Restrictions for the student version

     This student version of PSpice will run in 512kbytes.  It will run with or
     without the floating-point co-processor.  All the features of the
     production PSpice as of December 1987 are included except that the circuit
     size is restricted to a maximum of about 10 transistors.  Note that for
     schools teaching introductory electronics courses, 10 transistors may be
     all that is needed.  The production version of PSpice comes with a library
     of models for about 200 standard devices (diodes, bipolar transistors such
     as the 2N2222, power MOSFET's, opamps, comparators, and transformer
     cores).  The student version includes a reduced version of this library
     with about 10 parts.  The library is in the files with extension ".LIB" on
     the first diskette.  These are ASCII-text files and we recommend that you
     print them out for more information on them.

6.0) Running Probe

     These first diskette also contains Probe, the graphics post-processor for
     PSpice.  Probe is run by adding the statement:

          .PROBE

     to the input file to PSpice.  Then, PSpice stores all the node voltages
     and device currents calculated during the simulation into a file called
     PROBE.DAT.  The presence of the PROBE.DAT file will cause Probe to be run
     automatically as soon as PSpice is finished.  In addition, once the
     PROBE.DAT file is created, Probe can be run by itself (that is, without
     re-running PSpice) by typing

          PROBE

     To run Probe the first time, we recommend adding a ".PROBE" statement to
     EXAMPLE1.CIR with a text editor and then typing:

          PSPICE EXAMPLE1

     PSpice will simulate EXAMPLE1 and create a PROBE.DAT file.  After PSpice
     is finished Probe will start up automatically.

     Probe accepts commands through a menu displayed at the bottom of the
     screen.  Most of these commands are self-explanatory.  To put up a
     waveform, use the Add Trace command.  When it asks for a variable or
     expression, enter a voltage or current in the same format as for a .PRINT
     or .PLOT statement in PSpice.  For instance,

          V(4,5)    will show the voltage across nodes 4 and 5
          IC(Q1)    will show the collector current at transistor Q1

     The Add Trace command also allows you to enter arithmetic expressions of
     voltages and currents.  For instance,

          V(4)-V(5)           will show the same waveform as V(4,5)
          V(4,5)*I(CLOAD)     will show the instantaneous power through CLOAD

     The PROBE.DEV file contains a list of the devices attached to your system.
     The allowed devices for "Display = " are:

          Text:          Non-graphics display
          IBM:           IBM CGA (640x200 no color) adaptor
          IBMEGA:        IBM EGA (640x350 with color) adaptor
          GenericEGA:    non-IBM EGA (640x350 with color) adaptor
          Hercules:      Hercules graphics (720x348 no color) adaptor
          AT&T:          AT&T 6300 (640x350 no color) adaptor
          FutureNet:     DASH2 graphics (640x350 no color) adaptor

     The allowed devices for "Hard-copy = " are:

          Text:          Non-graphics printer
          Text132:       Non-graphics printer (132 columns)
          Epson:         Epson FX-80 printer
          Epson132:      Epson FX-100 printer
          EpsonMX:       Epson RX and MX-80, Okidata IBM Compatible, Okidata
                         with Plug N' Play, and Epson-compatible printers
          EpsonMX132:    Epson RX and MX-100 printers
          Okidata:       Okidata ML92 printer
          Okidata132:    Okidata ML93 printer
          Toshiba:       Toshiba P351 in 180 dots/inch mode
          Toshiba132:    Toshiba P351 (132 columns)
          Printronix:    Printronix P300 and P600 printers (80 columns)
          Printronix132: Printronix printers (132 columns)
          IBMClr:        IBM color printer (black only)
          IBMClr132:     IBM color printer (black only, 132 columns)
          IBMClrSlw:     IBM color printer (color)
          IBMClrSlw132:  IBM color printer (color, 132 columns)
          CItoh:         C. Itoh color printer (black only)
          CItoh132:      C. Itoh color printer (black only, 132 columns)
          CItohSlw:      C. Itoh color printer (color)
          CItohSlw132:   C. Itoh color printer (color, 132 columns)
          HP             Hewlett-Packard 7400 and 7500 series plotters (2 pens)
          HP6            Hewlett-Packard 7400 and 7500 series plotters (6 pens)
          HI             Houston Instruments DMP pen plotter
          HPLJ           Hewlett-Packard LaserJet printer

     We recommend that you use "Text" first before trying out your system's
     graphic devices.  Note: this student version of Probe is for IBM and IBM-
     compatible PC's only (for example, will not run on the Texas Instruments
     professional PC).

     This student version of Probe will run with or without the floating-point
     co-processor.  It draws traces from 5 to 10 times slower without the co-
     processor.  This student Probe has all the capabilities of the production
     Probe as of December 1987, but does not support text-format datafiles.
     The production Probe requires the co-processor; it is not optional.