X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f X-Recipient: geda-user AT delorie DOT com X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.98.4 at av01.lsn.net Message-ID: <559EC10F.3010301@ecosensory.com> Date: Thu, 09 Jul 2015 13:44:31 -0500 From: John Griessen User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.6.0 MIME-Version: 1.0 To: geda-user AT delorie DOT com Subject: Re: [geda-user] Back annotation References: <559E86A4 DOT 3040109 AT ecosensory DOT com> In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id t69IiZSR014966 Reply-To: geda-user AT delorie DOT com On 07/09/2015 11:48 AM, John Doty wrote: > For my ASIC designs, the parameter extracted netlists are about 200x the size of the netlists generated from the schematics. > Printed circuit designs are generally flatter, but back-annotation into even a simple circuit still looks impractical to me. > There’s really no utility to it anyway: the netlist is what you need as input for your verification process. I can see how a 200x the lines of netlist result might stop you, but There is always utility possible in scripting the extraction of and reduction of raw data into a sum, with heuristics, for sizing drive transistors - whether in a chip logic fanout or a power supply. Perhaps you're stopping at the netlist because of some detail of your method, but reducing a flat layout extraction netlist to useful annotations is the definition of utility to me. And it doesn't bother me if that script is GUI button connected either. It should be easy to change it is all. Different strokes...