Wow! Interesting responses to a question with not many details... Quite amazing how people from two different design worlds see the question in a totally different way. I don't even use vias in a single-sided pcb, and the autorouter is not too hot with ss pcbs anyway - unless plenty of room. I guess it would depend on what Raybo's background is as to what is easiest to do. I would concentrate on arranging components as a real priority - then layout of tracks (manually routing is my preference here, but may not be realistic for the design). Liane.
> > Use the design rules to give priority to the bottom layer by an > excessive amount. Also set the via size to an excessive amount. > They will become the pads for your links, but you want them larger > than that so that it discourages the router from using them. > Under the signal integrity rules is one to limit the length of traces so > you may be able to use that on the top layer to get fixed length links. > Let the autorouter rip. Examine the result and move parts around to > improve the result. It won't be ideal but it is much easier to take a > routed board and reroute tracks to get the desired result. > > Once done, globally change the vias to the required size and select > all tracks on the top layer and copy them to Top Overlay. Don't plot the > top layer but keep the tracks there to maintain integrity with the > schematic. > > Steve. > > ====================================================== > Steve Baldwin Electronic Product Design > TLA Microsystems Ltd Microcontroller Specialists > PO Box 15-680, New Lynn http://www.tla.co.nz > Auckland, New Zealand ph +64 9 820-2221 > email: [EMAIL PROTECTED] fax +64 9 820-1929 > ====================================================== * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
