> everything associated with the unused pads is flagged as a DRC error. My
> desire
> would be to set a design rule where anything associated with these unused
> pads
> is not flagged, but everything else is to prevent missing any real DRC
> errors in
> this design.
>
Ken
Under tools,design rule checks, only check off Clearance and unrouted for
online and reports. Do not check shorted- circuit constraint. Your BGAs
and design will pass 100 % DRCs if the design is routed correctly. No-Net
pads and fan outs will not be flagged. The Clearance and short-circuit
check overlap a design rule check so your board will pass with clearance and
unrouted checked only. I design allot of boards and have no problems with
this method. In all the designs I have ever completed with Protel, I have
only had three errors that escaped the DRC. Two involved planes and one
involved the use of a conflicting design rule for overlapping holes enabled
at the same time as my clearance rule.
It works
Mike Reagan
EDSI
Frederick Md
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