> 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 -- Ecosensory Austin TX tinyOS devel on: ubuntu Linux; tinyOS v2.0.2; telosb ecosens1 _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
