At 04:40 AM 1/6/2004, you wrote:I have never used the function so I do not know if it works or not in general. But depending upon the type of PC motherboard you are doing, it may be guaranteed to not work for you. In many of the newer chipsets, you need to equate the lengths from die to die, which means you need to take into account the trace length of the signal on the package itself, which is unique for each signal. The bottom line is that in order for the "nets" to be of equal lengths, the traces on the board may need to be of quite different lengths. Unless the function allows you to add a unique offset to each net, which I have not seen in the documentation, you will not be able to use it.
In the near future I am going to layout a board (in Protel 99SE) with high
speed digital signals (PC motherboard). The tracks in some of the buses must
be of same length due to the high speeds and I must use the "Equalize Net
Lengts" function.
Another area where you are going to run into problems is in routing the memory bus. The length has to be equal from the die on the memory controller to the pad on the memory connector. However, this signal path goes through a resistor, so you are actually working with the sum of the length of two nets on the board plus the package offset as the entity that you need to equalize.
Good luck.
Hamid (Been there, done that, did not enjoy it one bit)
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[EMAIL PROTECTED] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
