On Jul 15, 2007, at 9:01 AM, Stephen Williams wrote: > DJ Delorie wrote: > >> In theory, via-in-pad lets you bring an extra row out on the top >> layer. It might mean the difference between 12 and 14 layers. > > Also, if you avoid masking the bottom side of the via, you suddenly > have scope access to every pad of the BGA, which I've found to be > amazingly useful in my day-job work. (No I didn't make those boards, > and no they were not done with PCB.)
Bringing all balls of an FPGA out to vias is very useful for those last-minute green-wire ECOs. One problem is that many tools will flag a "single-node net" as a DRC error. -a _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
