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LC is simulation tool for the analysis of the electromagnetic
properties of electrical interconnects. The full three-dimensional
circuit is modeled, so all interactions are automatically included in
the solution. The model can be excited by numerous types of waveforms,
and the transient response measured using common values such as
voltage and current. Circuit parameters such as inductance,
capacitance, and impedance can be derived from the transient response,
and frequency-domain results such as S-parameters can also be
calculated. Far field radiation patterns can be obtained.
LC is primarily an electromagnetic simulation and uses the
Finite-Difference Time-Domain (FD-TD) technique. FD-TD is a full wave
explicit solution of Maxwell's equations in three dimensions. In FD-TD,
the rectangular volume enclosing the model is discretized into a large
number of small cells, which may be uniformly-sized, or may vary in size
within the simulation space. The dielectric, permeable, lossy, and
conducting material properties of each cell are incorporated into the
field updates, which are performed iteratively in small time steps.
An interface between the electromagnetic simulation and the circuit
simulation program SPICE is available within LC. This allows the user
to add arbitrary SPICE circuits, such as drivers and loads, into the
interconnect model. The interconnect performance is calculated using
FD-TD while the lumped-element circuits are evaluated by SPICE.
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version 6.9
Update for wxWidgets 2.6.2
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Patch provided by Sergey Svishchev in private mail.
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From Sergey Svishchev in private mail.
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Release Note for Icarus Verilog Snapshot 20070123
Handling of arrays has been rewritten to allow support for net
arrays. This caused ivl_target API changes, as well as elaboration and
vvp run time changes. There may be bits of the old method lingering in
the source code.
Improve support for constant power (**) expressions, and other
constant exppressions that are passed to functions/tasks.
Improve elaboration of for-loop increment expressions. There were some
bugs there that are not fixed.
Fix argument width calculations for shift operations.
Constant ector expressions can have real constants. Handle this at run
time where needed.
Fix some bad lookaside optimizations for assignments to l-value part
selects.
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last snapshot. A highly abbreviated list is:
libgeda:
- fixes to postscript output
- fixes to arc handling
- added some functions for embedding and deembedding symbols
- many changes to the internal data structure.
- fix a bug which could cause missing connectivity on a bus
- improvements to attribute handling
- fix a bunch of compiler warnings.
- various other bug fixes
gschem:
- improvements and bug fixes to the autonumber code
- improvements to the various file selection dialogs
- improvements to attribute handling
- improvements to the internal data structure
- various other bug fixes
gnetlist:
- fixes for guile-1.8
- update the gsch2pcb backend to allow running or never running m4 for pcb
footprints.
- changed "package" to "refdes" in the BOM/BOM2 backends
- added a drc2 regression test
- bugfix in the allegro backend
- other misc fixes
symbols:
- added 4 missing characters to complete the hungarian character set
- add greek mu
gsymcheck:
- man page improvements
gattrib:
- enhanced sorting functions
- various bug fixes
utils:
- add an option to gsch2pcb to let the user prevent m4 from ever being run
when looking for pcb footprints.
- let gsch2pcb look both for "name" and "name.fp" when looking for a footprint
called "name".
- use some configure options to set the default gsch2pcb footprint search paths
rather than hardcoding them.
- added a gnet_hier_verilog.sh script to do non-flattened verilog netlisting
- added options to gschlas to embed or de-embed all symbols in a schematic
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========================================================================
Release Notes for PCB snapshot 20070208
========================================================================
- Add polygon clipping code. This is a big change to how polygons are handled.
The new code now removes islands and correctly identifies open circuits caused
by a trace fully cutting through a polygon. In addition, the RS-274-X output
is now simpler and works with some board houses that use older non-conforming
sofware. Different styles for thermal reliefs are also now supported as part
of the polygon clipper code.
- Add support for plugins
- Many improvements to the autorouter.
- Various improvements to the trace optimizer.
- Add a fontmode for editing pcb fonts
- Add progress() hook to HID structure
- Fix a bug with non-functional windows on some window managers commonly
found on OS-X
- Add support for controlling pcb via dbus
- Fix various bugs which would cause a crash
- Add --scale for postscript scaling
- Intercept window manager delete events with the GTK gui
- Scan the .pcb file for a FileVersion value. This is not written out yet
but will be in future versions.
- Warn if non-manhattan lines are trying to become pads.
- Allow no-solder paste pads to support fiducials
- Report in mm or mils as selected by user
- Allow reordering of layers
- add some more QFN packages
- fix building with sun studio c compiler
- Made a pcb installation be relocatable.
- Convert the m4 libraries to newlib libraries as part of building a distfile.
The m4 libraries are still considered the sources and as such are still
distributed but this eliminates the need for m4 at runtime for footprints.
- Got rid of the pcb wrapper script around pcb-bin.
- Remove some old footprints of questionable naming, accuracy, or usefulness.
- Get the autosave/backup code working on all GUI's
- Fix some drill size rounding in the reports
- Changed the backup file name to be derived from the .pcb file name
- Added a command line option for DrawGrid
- Fix logic for adding new ratlines
- Fix gtk grid when board is flipped
- Add "find" and "rip-up" buttons to the netlist window
- Draw plated holes when exporting
- Fix some bugs when converting selection to element
- Fix build on cygwin
- Enhance the win32/build_pcb script used to generate a non-cygwin windows
installer.
- Make pcb work under non-cygwin windows
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SimPy 1.8 is a major release with new capabilities, improved documentation
and bug fixes. It is fully backwards compatible with previous versions.
From SimPy 1.8 on, the obsolete Python version 2.2 is no longer supported.
Some of the changes and improvements are:
* New compound yield statements, supporting time-out or event-based
reneging in 'get' and 'put' operations on Store and Level resources.
* yield get on a Store resource can now have a filter function which
selects which and how many items (e.g. "3 parcels weighing less than
3 pounds") should be retrieved.
* The Manual has been thoroughly edited, restructured and rewritten
with a view to greater clarity and readability. It is provided in both
HTML and PDF format.
* The Cheatsheet has been completely rewritten in a tabular format and
reduced to just a few pages. The goal was to turn it into a concise
desktop reference of SimPy commands. The Cheatsheet is provided in both
XLS (MS Excel spreadsheet) and PDF format.
SimPy 1.7.1 is a minor (maintenance) release which fixes a few bugs
in 1.7. The SimPy 1.7.1 API is identical to that of version 1.7.
SimPy 1.7 is fully compatible with version 1.6.1. This major release brings
significant new capabilities for the SimPy modeller and thus a broader
field of applicability to SimPy. It is now very easy to implement models
for scenarios involving:
* producer/consumer relationships between processes,
* multi-process cooperations,
* multi-resource requests, and
* consumable resources.
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Error: An integer constant expression is required within the array subscript operator.
VS: ----------------------------------------------------------------------
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files. This allows setting INSTALLATION_PREFIX for the package.
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AC_PROG_CXX to find a c++ compiler. This fixes building with sunpro.
The result seems to run ok. Patches submitted upstream.
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environments.
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depends bump.
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INSTALLATION_DIRS, as well as all occurrences of ${PREFIX}/man with
${PREFIX}/${PKGMANDIR}.
Fixes PR 35265, although I did not use the patch provided therein.
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PKGREVISION++
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compiler. Patch is already in the upstream sources.
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Patch is already in upstream sources.
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Builds on solaris with sun studio compilers now. Patch already in the
upstream sources.
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packages with the modular Xorg equivalent. Those are falling back
to the old location by default, so this commmit doesn't change
dependencies.
graphics/xpm ==> x11/libXpm
fonts/Xft2 ==> x11/libXft
x11/Xfixes ==> x11/libXfixes
x11/xcursor ==> x11/libXcursor
x11/Xrender ==> x11/libXrender
x11/Xrandr ==> libXrandr
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There have been many updates and minor versions between the last packaged
version and this one. These updates have included many bug fixes including
several bugs which would cause a crash, bugs in the generated netlists,
and others.
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Release notes for the gEDA/gaf 20061020 snapshot
Changes
_________________________________________________________________
libgeda/gschem
libgeda and gschem no longer use libgdgeda (which was a gEDA specific
hack to the libgd library). gEDA/gaf now wants to use the original
GD library. (Wojciech Kazubski and Carlos Nieves Onega with
cleanup by others)
*
* gEDA/gaf now compiles out of the box on cygwin. (Cesar Strauss)
* Fixed bug #1553544: "New pages inadvertently created when adding
nets in gschem" (Peter Clifton)
* New component selection dialog box for gschem. This one is so much
better than the original one. Please test it out and submit
comments to the mailing lists. (Patrick Bernaud)
* The preview window is inside the file selectors again. The preview
window has been refactored and improved. (Patrick Bernaud)
* gschem now places a title block (or any component the user wants)
when a new page/window is created. This solves the common complain
that the initial zoom is way to far out. (Carlos Nieves Onega)
* Improvements to the new print dialog box: Make print settings
sticky for session. (Peter Brett)
* Fixed bug #1527465: Do a zoom extents for all pages when the main
window is maximized. (Carlos Nieves Onega and others)
* Fixed bug #1565433: Added the border in the gdk-pixbuf's image
output. (Carlos Nieves Onega)
* New dialog for user confirmation before closing a page or a
window. This is also a great improvement over the previous exit
confirm dialog box. (Patrick Bernaud)
* Various language translations updated.
* libgeda's shared library version is now 27:0:0.
* Many more bug fixes and code cleanups. (various people)
gnetlist
* Fixed PCB cursor related issues (Peter Clifton and Stuart
Brorson).
* Minor cleanup of gnet-PCB backend. (Thien-Thi Nguyen)
gattrib
* Made gattrib throw up GUI window warning user of no components or
attributes. (Stuart Brorson)
* File browsers in gattrib are now the same ones that gschem uses.
(Patrick Bernaud)
* The usual bug fixes and code cleanup. (various)
docs
* Updated the wiki snapshot to the latest web wiki version.
symbols
* linear/lm311-1.sym: Removed the GND false connection of the
symbol. (Ramakrishnan Muthukrishnan, John Luciani, and Carlos
Nieves Onega).
* Lots of off grid symbols cleaned up. (Werner Hoch)
gsymcheck
* Adds newline that is missing from the "Found Pintype=..." message
in s_check_pintype() in s_check.c. (Jeff Mallatt and Carlos Nieves
Onega)
* gsymcheck now counts the number of distinct pinnumbers specified
in all slotdef= attributes. Uses that number, plus the number of
net= pins, to compare with the "footprint size" when checking for
that warning. (Jeff Mallatt and Carlos Nieves Onega).
utils
* Applied patches for the cygwin port. Lots of various improvements
to make gschemdoc more Windows friendly (at least under cygwin).
(Cesar Strauss, Peter Brett, and Carlos Nieves Onega)
examples
* No significant changes
For more a detailed changes, please look in the appropriate ChangeLogs
in the source tarballs.
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