Hi, I am working with orcad capture 10 and I want to make a hierachical design where I would like to group most signals in busses. one of the busses I want to make mist contain must contain both output signals form block A that are connected to inputs at block B and alse inputs on block A that are connected to outputs on block B When I do this I get warnings in the DRC check. I tried Bi directional ports and passive ports. Is there any clue how to do this without DRC errors? Bert This email is confidential and intended solely for the use of the individual to whom it is addressed. Any views or opinions presented are solely those of the author and do not necessarily represent those of the sender. If you are not the intended recipient then please be advised that you have received this email in error and that any use, dissemination, forwarding, printing or copying of this email is strictly prohibited. If you have received this email in error, please notify the sender. Thank you.