"Bolis Bortolo BB PCBDesign" <[log in to unmask]> on 2001-03-27 03:47:44 AM wondered: >I followed the PCI specs about traces lenghts ( 1.5 inches for >interface data signals and 2.5 +- 0.1 inches for the clock ). ... >the sample board from OS doesn't follow >the PCI specs ... >I discovered the same situation in other boards ... >Are those boards out of specs or what ... >Bolis Bortolo Meta: There's a fine PCI SIG mailing list where topics like this get discussed in depth. ``Send a message to <[log in to unmask]>. In the "Subject:" line have the word "subscribe" and that is all there is to it.'' Anyone can subscribe to this list. More details are at http://www.pcisig.com/support/forum.php3 and there's even a mailing list archive there (the "PCI reflector archive"). . To answer your actual question: Yes, quite a few commercial cards are slightly out-of-spec. Because the PCI spec is a little bit conservative, they usually still work OK, as long as the motherboard and all the other cards stay within spec. -- David Cary --------------------------------------------------------------------------------- DesignerCouncil Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF DesignerCouncil. To set a vacation stop for delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------