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README.DOC
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1991-08-15
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1.0) Introduction
This file describes the enhancements and changes included in
the 5.0 release of PSpice.
For information regarding installation, operation,
and technical details about the package, you may purchase the
Circuit Analysis User's Guide for $50.00.
2.0) Updates and Corrections to the User's Guide
All manual modifications for this version have been marked by shading
those items.
Note: Release 5.0 of Probe, Parts, and StmEd (DOS and
DOS/16M) supports display modes VGA800 and VGA1024 on
Super VGA adapters that use one of the following chipsets:
ATI Technologies 28800
Chips & Technologies 82C451, 82C452, or 82C453
Video7/Headland Technologies HT208 or HT209
Trident TVGA8900
Tseng Labs ET4000
Western Digital WD90C00
In addition, the VESA (Video Electronics Standards
Association) standard BIOS interface for 800x600 and
1024x768 16-color modes is supported (DOS 640Kb version
only). If your adapter manufacturer also supports this
standard, a VESA BIOS extension will have been included
in the software utilities provided with your video adapter.
This will be either an installable device driver (called
VESA.SYS or something similar) or a Terminate-and-Stay-
Resident program (called VESA.COM, VESA.EXE, or something
similar). To use the VESA interface, you must install the
VESA BIOS extension prior to running Probe, Parts, or StmEd.
DIGITAL SIMULATION
The Multi-Bit Digital-to-Analog Converter switching time
model parameter default values have been modified. The
default value for TSWMN, TSWTY, and TSWMX is now 10ns
instead of 0.
Ten new one-shots have been added to the digital library: the
121, 122, and 123 TTL-7400 series parts, and the CD4098B and
CD4538B. The TTL-7400 series parts are included in the pin
list at the end of the Digital Simulation chapter of the
User's Guide, and the pin list for both the CD4098B and
CD4538B is Reset, TR_POS, TR_NEG, Q, and QBAR.
SUN (NETWORK LICENSE VERSION)
If the -q switch is used and if all copies of the program are
checked out, you are placed in a queue waiting for the next
available license.
DOS/16M (Extended-DOS VERSION)
The description on page 17 of the Circuit Analysis User's
Guide, section 2.1.1.6.5 Virtual Memory, is misleading. The
DOS16VM environment variable specifies the TOTAL size of
virtual memory, NOT the size of the swap file. Any difference
between the value set by DOS16VM and memory actually available
is made up for by the swap file. For example, if you set
DOS16VM=4000 and your PC has 3Mb of extended memory, then a
swap file of about 1Mb will be created for the duration of
the simulation, etc.
Also, you may use the suffix "M" with the DOS16VM value to
denote megabytes (1Mb = 1024Kb).
3.0) Program modifications since version 4.05.
PSPICE
1. The Probe data file name no longer defaults to PROBE.DAT.
When a PSpice simulation successfully completes and there
is a .PROBE statement in the circuit file, a Probe data
file will be generated and will have the same name as
the circuit file with a .DAT extension. For example, if
you ran PSpice with EXAMPLE1.CIR, your Probe data file
will be named EXAMPLE1.DAT. You may also override the
default data file name by listing it as the third
argument in your PSpice command statement.
This file name is stored in the file PROBEDAT.NAM.
Therefore, if Probe is executed without a data file name,
Probe will read the file name from PROBEDAT.NAM.
2. There are two new model parameters for the GaAsFET model:
VDELTA (capacitance transition voltage) and VMAX
(capacitance limiting voltage).
3. There is one new model parameter for the Inductor Coupling
(Transformer Core) model: Gamma. A, C, K, and alpha also
have some description modifications.
4. There are two new parameters for the .OPTIONS statement:
DIGMNTYSCALE and DIGTYMXSCALE.
5. Current mode Pulse-Width Modulator (PWM) models (in
SWIT_REG.LIB) are available and require both the Analog
Behavioral Modeling and Digital Simulation options.
6. Unijunction Transistor (UJT) models (in THYRISTR.LIB) are
available and require the Analog Behavioral Modeling option.
Analog
Behavioral
Modeling 1. The capability to simulate Chebyshev filters has been added
to Analog Behavioral Modeling. This allows the user to
implement a Chebyshev filter based in terms of a set of
frequency characteristics.
PROBE
1. If Probe is executed without specifying a data file name,
it will read the file name from the file PROBEDAT.NAM. If
PROBEDAT.NAM does not exist, Probe will look for PROBE.DAT,
and then PROBE.TXT. If neither PROBE.DAT or PROBE.TXT
exists, then Probe will prompt the user for the data file
name.
2. Six new display device drivers have been added: GenericVGA,
IBMVGAMono, NECHiClrMou, NECNrmMono, VGA800, and VGA1024.
3. Two new printer drivers have been added: HP_GL2-PCL and
HPLJE.
4. The capability to label the coordinates of a cursor has
been added as an option on the Cursor Menu.
5. There is now the capability of having multiple y axes. The
menu options are part of the Y Axis Menu.
6. The Performance Analysis feature containing the Goal
Functions has been added to the X Axis Menu.
Performance_analysis allows adding traces that show how a
derived value changes during multiple PSpice runs. The
derived value is extracted from one or more PSpice waveforms
by using search commands, marking points, and evaluating
expressions of marked points. For example, you could create
a plot that shows propagation delay as a function of
temperature, or pulse-width as a function of some component
value, or frequency of the output as a function of a stepped
parameter.
7. For EGA, VGA, and Super VGA displays, the colors for traces,
cursors, background, foreground, etc., can now be defined by
the user from within Probe from the Analog Plot Menu.
DIGITAL SIMULATION
1. There are 8 new parameters for the UIO model: TSWLH1,
TSWLH2, TSWLH3, TSWLH4, TSWHL1, TSWHL2, TSWHL3, and
TSWHL4.
2. There are now two types of stimulus devices: the stimulus
generator (STIM) which uses simple commands to generate a
wide variety of waveforms; and the new file stimulus
(FSTIM), which obtains the waveforms from an external file.
4) Install program for PSpice
The installation program used to install PSpice, INSTALL, is
licensed software provided by Knowledge Dynamics
Corporation, P.O. Box 1558, Canyon Lake, Texas 78130-1558
(USA). INSTALL is Copyright (c) 1987-1991 by Knowledge
Dynamics Corporation which reserves all copyright protection
worldwide. INSTALL is provided to you for the exclusive
purpose of installing PSpice. MicroSim Corporation is
exclusively responsible for the support of PSpice, including
support during the installation phase. In no event will
Knowledge Dynamics Corporation be able to provide any
technical support for PSpice.