As one friend of mine often says: "The great thing about standards is that there are so many to choose from."
I have to ask what tools read this file formats? Do any of these files get used, or are they standards that went nowhere? -dave John Griessen wrote: >> Stuart Brorson wrote: >>> Another CAD format, ODB++, is a newer, smarter format for PCB CAD. > > Here's a comment that is so telling by Govt contractor Martin Marietta: > > The ODB++ proposal states the benefits of having libraries for the fabricator > to draw > on. Having dealt for years with the problems caused by mismatched library > information and formats, this feature would add an additional burden to the > PWB > quality and acceptance departments. librarians, and component engineers..." > > Don't we know... > > > The IPC standards seem to be freely downloadable now... > > http://webstds.ipc.org/2511/2511intro.htm > has them. It's all XML! GA Tech has some history of it: > > http://eislab.gatech.edu/projects/genx/ipc-review/ipc2510if.pdf > > IPC-2510 had format like: > > $PACKAGES > PACKAGE: “CAP_SUPPRESS_TYPE_24”, “P34”, “CERAMIC_DIP”; > PINS: 24, “TH_RIBBON”, 100, SIDE; > TARGET: “FIDUC_X”, TARGETMARKER, “Padstack12”, (0,0); > $ENDPACKAGES > > IPC-2511 for the same is: > > <?xml version="1.0" standalone="yes" ?> > <PACKAGES> > <PACKAGE> > <PACKAGE_NAME> CAP_SUPPRESS_TYPE_24</PACKAGE_NAME> > <PRIMITIVE_REF>P34</PRIMITIVE_REF> > <PACKAGE_TYPE>CERAMIC_DIP</PACKAGE_TYPE> > <PINS> > <PIN_COUNT>24</PIN_COUNT> > <PIN_TYPE>TH_RIBBON</PIN_TYPE> > <PIN_PITCH>100</PIN_PITCH> > <PIN_EXIT>SIDE</PIN_EXIT> > </PINS> > <TARGET> > <TARGET_NAME>FIDUC_X</TARGET_NAME> > <TARGET_SURFACE_REFERENCE>TARGETMARKET</TARGET_SURFACE_REFERENCE> > <TARGET_REL_CENTER_POSITION>Padstack12< /TARGET_REL_CENTER_POSITION> > <TARGET_ROTATION>(0,0)</ TARGET_ROTATION> > </TARGET> > </PACKAGE> > </PACKAGES> > > > It kind of bogs me down... > > They show another proposed XML format: > > <?xml version=”1.0” standalone=”yes” ?> > <PACKAGES> > <PACKAGE NAME=”CAP_SUPPRESS_TYPE_24” PRIMITIVE_REF=”P34” TYPE=”CERAMIC_DIP”> > <PINS COUNT=”24” TYPE=”TH_RIBBON” PITCH=”100” EXIT=”SIDE”/> > <TARGET NAME=”FIDUC_X” SURFACE_REFERENCE=”TARGETMARKET” > REL_CENTER_POSITION=”Padstack12” ROTATION=”(0,0)”/> > </PACKAGE> > </PACKAGES> > > that seems better... all that is 1998 or so... long ago... > > > >> John Griessen > > _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
