I believe you want to do an ERC. Though if you have the schematic and the PCB open at the same time, I don't think it should be possible to get out of sync. Josh -- A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. -Douglas Adams On 4/28/05, Roy J. Gromlich wrote: > Sometimes the Schematic and the PCB get out of synch - IC4 is one thing in the Schematic and something else on the PCB. > In any case, the last PADs revision I worked with had a really neat feature - it would generate a differences list between the Schematic data base and the PCB layout data base. It would analyze the data base and display, in side-by-side form, all the differences between the Schematic & the PCB. You could then do an edit for each instance (object/item) to make the PCB agree with the Schematic, or to make the Schematic agree with the PCB. When you were done there would be only one design data base with (hopefully) the proper entries for everything, thus generating a BOM produced correct & consistent results. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist