This document summarizes enhancements and fixes to the ASM 3500 DXF to GDSII Bidirectional translation program. Please consult this page on a regular basis to determine what changes have been made to our programs.
v6.83 Windows and Linux (1-17-2017)Software Updates
DXF view options removed from GUI (LINUX only, both directions) - xgdsvu was removed from the LINUX product image - this makes it consistent with Windows versions.
v6.81a Linux (8-12-2015)Circularize Option in xgds2dxf GUI
Added Circularize option in xgds2dxf GUI.
v6.82 (4-7-2015)DXF Grid Resolution fix
This version fixes a problem in dxf2gds when using a grid of 10,000 um for DXF and 1,000 um for GDS. This combination caused an overflow problem that resulted in erroneous reporting of bad figures.
v6.81 (3-31-2015)Flexlm Floating licensing fix
This release fixes a client problem when running the software in floating mode.
v6.79 Windows (1-15-2015)Layer Assignment Problem
Ver 6.79 in DXF2GDS addresses an issue where when data that exceeded the vertex count for the MAX_POINTS keyword the roles of layer and datatype were reversed.New gds2dxf Linux command line option -ze
The new gds2dxf -ze command line option will add header information to the DXF file which will force AutoCAD to open the file in Zoom Extents mode.
v6.78a Windows (1-6-2015)Spline Problem
A SPLINE issue was fixed where the knot values were read in with insufficient precision. Knot values all became zero in the problematic DXF file. The knot values were treated as coordinate information by the reader when in fact they should have been read in at the maximum possible precision as they are used for parameterizing a contour. This issue has now been fixed. The package is now v6.78a. Two engines d2g.exe and d2g64.exe now have version v6.79.
v6.78 Windows (12-19-2014)Spline on ACAD2007LT
SPLINE data from AutoCAD R12, R2004, R2010, R2013 and R2007 LITE now all behave properly for certain customer file. A problem was identified in the R2007 LITE output where linking appeared to be broken. This was the result of the first point in the R2007 LITE DXF SPLINE data being dropped. This issue has now been fixed.
v6.77 Windows (12-10-2014)Problem Fix
SPLINE related keywords are preserved when running from the GUIs (Windows ONLY).
v6.76 Windows (12-4-2014)Better Spline Conversion
The Windows version includes better support for splines.
ARCSAG 1 SPLINE_RULE rule_number: 0 - 3 SPLINE_TOL spline_tolerance (user units)
v6.75 Linux (10-23-2014)Windows update
The Windows version includes now all the features added in 6.73 to the Linux version.Circularize improvements
The GDS2DXF has improved "circularization" over the previous version.DUP File Error - Permission Problems
This version addresses permissions problem (DUP file error issue).
In the DXF -> GDS direction some progress reporting has been added when the qualification of non-robust POLYLINES with width are converted to OUTLINE data is expected to take a long time (i.e. high vertex count).New Installer
Windows version makes use of our latest installer technology.
v6.73a Linux (09-08-2014)GDSII data type support in both directions
This has been implemented via the standard mechanism in the config file. Use of the LAYER keyword is the same as before with the exception that the GDSII layer field now can hold either a GDSII LAYER number or a GDSII LAYER:DATATYPE pair. Example: LAYER 0 0 FIRST 3:1 SECOND 3 5 THIRD 5 -8 OTHER 10:1 1 The precedence is such that LAYER:DATATYPE pairs will be mapped before LAYER entries that do not carry a DATATYPE component. DATATYPE is understood to also mean TEXTTYPE, NODETYPE, as well as BOXTYPE. The third field in the config file has always been used to map DXF layer colors. Now a negative layer color can be used to designate an “invisible” DXF target layer.Text justification support in both directions
After a complete round trip GDS2DXF2GDS all labels in GDS now have the same origin, height, and justification (all 9 combinations that are supported in GDS like “centerCenter”, “lowerLeft”, etc.) This has been implemented and is the default behavior. The old behavior can be restored via the config file. A new keyword PRESERVE_JUST was added to control this behavior. PRESERVE_JUST NO PRESERVE_JUST YES In the examples above the first use of PRESERVE_JUST disables this new enhancement request while the second turns it on (as usual ON and OFF can be used for YES and NO). One exception to the new behavior is that when source data comes from DXF and the TEXT has been aligned or fitted, the local sense of PRESERVE_JUST is NO, i.e. TEXT can not be both fitted or aligned an expected to be in kind to GDS TEXT presentation.AutoCAD invisible layer color when going from GDS2DXF
User can define an invisible color for the specific DXF layers when converting from GDSII to DXF.
DXF Revision in the header
GDS2DXF adds $ACADVER == AC1009 to the header – to document the DXF version. User can also define other things in the header following the example below. This has been implemented and applies when the new config file keyword ADD_PREAMBLE is TRUE ADD_PREAMBLE NO ADD_PREAMBLE YES PREAMBLE_INFO DXF generated by Artwork gds2dxf version 6.73a Input file: /abc/test.gds User: Anthony Example DXF Output file. 999 DXF generated by Artwork gds2dxf version 6.73a 999 Input file: /abc/test.gds 999 User: Anthony 0 SECTION 2 HEADER 9 $ACADVER 1 AC1009 0 ENDSEC
v6.69 Windows (11-21-2012)Large circle dropped during conversion
This version of DXF2GDS no longer drops with no warning CIRCLE data that it thinks will cause an integer overflow when converting from DXF to GDSII.
v6.68a Solaris and Linux (06-14-2012)PATH environment
Version 6.68a is the same release as v6.68 with the exception that xgds2dxf and gds2dxf carry version numbers 6.69 and a 14 June 2012 time stamp. The two of them now support PATH environment variable up to 10240 characters in length.
v6.68 Windows (04-18-2012)dxf2gds Windows 64 bit version
A 64 bit DXF2GDS engine (d2g64.exe) is introduced with this release. The 64 bit engine, supporting DLLs and key file(s) are copied into a sub folder named x64 during installation.
v6.65 Windows (07-07-2010)Config file in Read Only mode
Added an option in the dxf2gds direction to read the config file in Read only mode. User can save settings to a new name if needed.
In previous versions, when a user selected an Arc Resolution below 1 degree, the information was saved to the config file, but the GUI ignored it and reset
it to 9 degrees upon starting a new session of the translator. It did so on purpose to avoid creating very large GDSII files.
v6.64 (03-20-2010)Pline issue
The DXF engine had a bug handling pline with width that goes back on itself.
The section dropped with no warnings.
v6.63 (01-20-2010)Tapered pline
The DXF engine had a bug handling tapered plines. This has been fixed.
v6.62 (11-30-2009)Illegal bow tie polygon dropped
ASM3500 dropped an illegal polygon drawn as a bow tie. This has been fixed.gds2dxf max layer color number
gds2dxf GUI didn't support layer color number greater than 15. This has been fixed.Rotated extruded block translated incorrectly
ASM3500 converted incorrectly a block which was extruded along the Z axis and rotated. This has been fixed.Issue with small arcs
The issue was related to the presence of very short poly arcs. Problem reported by Dynatron and is now fixed.
v6.60a (09-14-2009)New release for Windows
This version is for all platforms and includes all the updates defined in 6.60.
v6.60 (09-09-2009)Identical Cell Names
GDSII cells may have the same name but different case. DXF doesn't support that and AutoCAD crashes with
duplicate block definition.
Control for the highest DXF indexed colors 7, 15, 255 (GDS2DXF).GDS PATHTYPE 4
GDS2DXF now supports GDS PATHTYPE 4 (variable square-ended extensions), i.e. PATHs with BGNEXTN and ENDEXTN.Control for BLOCK name length
GDS2DXF now has control on the maxmimum number of characters in the DXF block name. Some versions of AutoCAD only supports up to 32 characters while GDSII supports more.
v6.58 (07-24-2009)Issue with small arcs
The issue was related to the presence of very short arcs, which when converted to GERBER in CIRCULAR mode became 360 arcs (the starting and ending points collapsing to the same point). This problem wasnot a problem when not in CIRCULAR mode, so now every DXF ARC is first checked as if it were not in CIRCULAR mode. If the number of points to create the corresponding segmented ARC is less than 2, the ARC is discarded.
v6.57a (06-24-2009)Improved Linker
Improved linker as a result of Physware complaint that some very poorly constructed data (mulitple lines and arcs showing up at the same point) did not link the way they liked.
v6.55a (06-02-2009)Angular tolerance
This version tighten up the angular tolerance from 0.001 radians to 0.0001 radians in evaluating polyline bulges. It is used to discriminate between nearly linear "polyarc" segments and "polyarc" segments with some measurable curvature.
v6.55 (05-09-2009)De-embedding bug
This version fixes the problem reported by Bill Martin, which was the result of striping for butting output and a polygon vertex touched a striping boundary which subsequently was dropped. This has been fixed in the Deemb.Dll.
v6.52 (09-25-2008)Folded polygon repair
A 0 width closed pline which is touching and twisting on itself was created incorrectly, generating a folded polygon.
v6.51 (06-25-2008)New De-Embedding Output
A new output option for the de-embedding was added. The new output option is in the configuration menu and the drop down option is: Using Datatype. This output option uses the GDSII datatype to inidicate a boundary's "position" in the polarity hierarchy. Any boundary with datatype 0 has no parents - datatype 1 has 1 parent, datatype 2 has two parents and so on.
This option can be invoked from the command line as -emblevel
Added for client Physware.
v6.48 (1-2-2008)Error reporting.
This version reports and if possible fixes "folded" polygons. If the
polygon can not be repaired it is placed on the "error layer" as before.
The DXF engine didn't report as an error a polygon that had a 0.01 micron segment folded on itself within a close pline. The problem was reported by Advance Reproduction and was fixed (T104).Long cell names.
The DXF in question crashed due to long cell names. The problem was reported by Advance Reproduction and was fixed (T103).Mirrored array.
The DXF in question had a problem with a mirrored array. The problem was reported by Advance Reproduction and was fixed (T106).
v6.46 (9-27-2007)Object folded on itself
The DXF engine didn't report as an error a polygon that had a small first segment folded on itself within a close pline. The problem was reported by Advance Reproduction and was fixed
v6.45a All Platforms (9-11-2007)Object folded on itself
The DXF engine didn't report as an error a polygon that had a 0.01 micron segment folded on itself within a close pline. The problem was reported by Advance Reproduction and was fixed
v6.42 All Platforms (5-15-2007)Ellipse problem.
The DXF engine didn't support ellipse entities in some cases. Problem reported by CTS Corp and was fixed.Validation of 0 width closed plines.
A re-entrant polygon (0 width closed pline) which was constructed incorrectly, didn't flag an error in the DXF2GDS conversion. Now it will report an error when the validation option is on.Path to Outline.
A path with width wasn't converted correctly to a closed outline. Problem reported by Advanced Reproduction and was fixed.
v6.40 All Platforms (1-11-2007)Added support for USB keyes on Windows.
ASM3500 can now support USB keyes on Windows.ASM3500 Supports Flex 11.3.
All versions are FLEXLM v11.3 compliant.ASM3500 Linux Supports Fedora.
The LINUX version works on all the "usual platforms", including Fedora.2GB file size support.
DXF2GDS is now LARGEFILE compliant, i.e. DXF files greater than 2GB are supported.Layer name with spaces supported.
DXF2GDS now support layer names with spaces.
v6.38 Windows (8-2-2006)Max vertex in De-embedding mode.
A problem was detected in De-embedding mode where the max vertex setting was ignore. Problem was fixed.
v6.37 Windows (3-21-2006)Shallow Pline Arc problem.
A problem was detected in the De-embedding module when a polygon had too many points in the "no-cutline" mode. Problem was fixed.
v6.35 Windows (1-12-2006)De-Embedding bug fix.
A problem was detected with plines that have a bulge of less than 0.00505 (arcs with large radius and minimum angle change). The "fix" involved relaxing the checking of very shallow POLYLINE arcs. Before POLYLINE arcs with bulge values of less than 0.00505 were converted to straight line segments. This value was changed to 0.00101.
v6.30 All Platforms (6-22-2005)Scaling problem.
A problem was detected when a block was inserted with scale that is close to an integer. For example, blocks that was inserted with scale 1.001 , got translated to GDSII with scale of 1.000File name problem
A problem was detected when the file name had "-k" in it. This has been fixed.
v6.28 All Platforms (3-25-2005)Fix for a path with duplicate vertices at a bend.
A problem was detected when translating a GDSII path that had duplicate vertices (i.e. two vertex points on the same coordinate) at a point in the path where it was changing direction. The resulting path outline was incorrect. The routine to find duplicate vertices has been updated to find and correct such a condition. [reported by Optimal Technologies]
v6.27b All Platforms (2-15-2005)Fixes to De-Embedding feature
Two fixes were made to the new feature added. One has to do with the output top cell name selected and one with files that have more than one main block.
v6.27 All Platforms (1-28-2005)Artwork Adds Polygon De-Embedding to ASM 3500
v6.25 All Platforms (11-21-2004)Circle Snap
Previous versions of GDS2DXF may create circle radius of 24.999 microns. This new version has new
parameter you can define in the config file:
Previous versions of ASM3500 didn't handle correctly certain conditions of mirrored arrays. This has been fixed.
v6.24 on Windows (09-29-2004)360 degree Arc
This version fixes a problem in the DXF to GDSII direction. A pline arc with 360 degrees (looks like a circle) was not processed correctly. This is now fixed.
v6.22 on Linux (09-27-2004)New GUI for Linux version
The Linux version comes with a GUI just like the Solaris and HPUX. Before, it was command line only.
v6.21 on Solaris (07-15-2004)Crash at Text menu
Program crashed with signal 11 when opening the text menu in the Configuration. It has been fixed.
v6.12 on Linux, Solaris and HPUX (11-14-2003)New Releases for all UNIX platforms with Flexlm Support
Updated all UNIX releases to the latest Windows release.
v6.10a on Windows (11-11-2003)Installation Fix for Harware Key
The installation for 6.10 terminated unexpectedly if the user selected hardware key (Sentinel) Licensing. This has been fixed.
v6.10 on Windows (06-26-2003)
Text centered justified
v6.04 on UNIX and Version 6.02 for Windows (07-12-2002)
New Polygon "Chopping" Function
Version 6.04 can now handle such complex boundaries automatically. It breaks down these large complex boundaries into smaller ones that do not exceed the max vertex limit.
Polylines with Width
Application Note for MEMS/Optical Designs.
Describes CAD related problems and solutions when designing optical
components (or other complex curved designs), and converting to GDSII and MEBES.
You can access it at:
Text Stroke Weight
Program Starts Up Hidden
New HostInfo Node Locking
Demo Mode is Gone
DXF Output Block Names
Structure Names Fixes
Program Starts Up Hidden
New HostInfo Node Locking
Demo Mode is Gone
Extra Structures Translated
SREF name is wrong
Maximum Number of Points per Polygon
Suppress Hatch and Dimension
This version distinguishes translation error, warning, success and cancel state and report accordingly, instead of just translation failed.
Polylines to Polygons Problem
No changes except revision number to track dxf2gds.
Selecting Structure Bug Fix
Added keyword searching in the log window.
Explode Text to Paths
Text scale was not working and this has been fixed.
Log File Searching
Asm3500 5.50 has the new Install Shield installation. In addition, it has the web package installation for internet download.
Improved Demo Mode
Improved Gds2dxf Structure Dialog Box
The new LSERV 4.0 license manager has been included that is Y2K compliant.
DXF Extract Module Added
AIX Platform Support Added
Previous versions would drop any arcs with angle less than 0.01 degree. At the time this seemed like a reasonable small number. The minimum angle has been reduced even further to 0.00001 degree.
Requested by Rodger Ackinclose of PowerX
Fixed Report Count of Total Number of Closed Polygons
This version forces (or adjusts) DXF layer color number to a range of 0-8 which is controllable in the Layers dialog box.
5.42 would not release a network license and therefore failed. This has been fixed.
Scanning Error Fixed
5.42 would not release a network license and therefore failed. This has been fixed.
The version jumped from 5.38 in order to maintain synchronization with UNIX.
ACAD 14 Lt Plines
Long File Names
Help Page Link to WEB
Bug Fix - Donut processing
The version jumped from 5.39 in order to maintain synchronization with UNIX.
When importing a DXF file generated by GDS2DXF (5.37) a customer received the AutoCAD Error Message:
"undefined block ...".
The GDSII file under consideration was found to use structure names where part of one name was embedded in another, e.g. HB7312_A and TYP200_HB7312_A. GDS2DXF had difficulty resolving the difference between the desired top level structure. Problem is fixed in 5.38.
Reported by Travis Kerby; Bosch.
When the DXF file contained a layer whose name begins with "Layer", the translator got confused (since it uses LAYER as a keyword) and did not assign the desired GDS Layer Number. This has been corrected.
DXF Layer Name GDSII Layer poly 10 metal 12 layer1 13
GDSII files can contain strings of text.They can also contain multi-line strings of text. Each line is normally terminated by a CR/LF. However some CAD systems are using only a CR or only a LF to terminate the text line. We've updated GDS2DXF to support any combination: CR/LF,CR or LF.
My name is Joe Blow CR/LF Your name is John Smith CR/LF. or My name is Joe Blow CR Your name is John Smith CR or My name is Joe Blow LF Your name is John Smith LF
Network Licensing on WindowsNT
Maximum Number of Structures
Context Sensitive Help
Error message - "Error Occurred in Communicating with module g2d."
Control Dialog Box, Tool Bar and Status Bar controls have been moved to the File-Preferences menu. The View pulldown has been removed and replaced with a button called View GDS.
Viewing GDS File
GDSVU and GDS2DXF now use 2 separate scan files so this is no longer a problem.Invalid Block in the DXF Output
When translating structures other than the top structure, the DXF output could not be imported to AutoCAD due to an invalid block error. This error in the translation engine has been fixed.
Translation Reports Wrong Text Files
If the GDSII path/filename was too long, the program truncated it internally and generated an error. Only workaround is to shorten the complete path or filename to the GDSII file. This is due to a 256 character limit in the DOS command line. No fix is planned since this problem does not affect Windows 95/NT.
Font Mapping to DXF Style/Font
Sharing Violation in Win 3.1
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