You can set the grid in the lib. to be metric and when done adjusting the
part switch it to a imperial grid and save it. The translation is made when
you switch the grids.

Ted

-----Original Message-----
From: Jon Elson [mailto:[EMAIL PROTECTED]]
Sent: Friday, September 07, 2001 2:17 PM
To: Protel EDA Forum
Subject: Re: [PEDA] Altera 144Pin TQFP Landing Pattern




[EMAIL PROTECTED] wrote:

> All,
> Thanks for responding.  It looks like I have several paths to explore.
>
> 1. I was able to get IPC's website footprint generation tool to spit out a
> footprint.
> 2. Brian Gurlanick's QFP generator.
> 3. Michael Scmitt provided a footprint he uses for the Altera part I'm
using.
>
> I have an additional question.  It looks like QFP footprints generally are
> created with metric grids.  Will I run into trouble when I use metric
> footprints on an imperial grid board?

The autorouter (and sometimes manual routeing, too) has a problem
when there are many different grids on the same board.  It doesn't cause
any specific problem with a metric/imperial grid, just that they are
different.

Jon

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