Connect IC to High Pin Count Connector

I think there's a SKILL script solution.  Have a method that allows you to place single pin parts on each net to drive net alias assignments at the connector to prevent/minimize via transitions...

The process starts by adding temporary single-pin components to the schematic having the final net alias name and add temporary net aliases on the connector side.

Ideally, these 1-pin temp parts would be a padstack small enough to cause a DRC error against one pin.  Not so large that multiple pins end up with DRC errors.  You won't be able to annotate the schematic reliably in a "first one wins" situation.

I'm basing this on a feature of DRC error properties:   Orcad/Allegro reports net names on both offending pins for each pad-to-pad DRC violation.

• As you plan out routing, place the temporary components close enough to connector pins having a "TEMP" net alias assigned to cause the error.  You want a pin-to-pin DRC error because that is what the script reads from.
• Using the short Skill script in GitHub, parses each of the pad-to-pad DRC errors, checks that one or the other net alias in the DRC error has a TEMP prefix.
• If it does, write out a line that renames the TEMP- net alias to match the final alias name.    This merges the two nets together after you upload an updated netlist. Skill code generates an annotation script to update your Orcad/Capture CIS schematic.
• After routing and annotation is complete, remove the temporary pad components from the schematic and netlist to the board to remove the single pin components.

I work for a CIS shop.  I wrote the framework for Concept HDL.  I don't have a library built to run HDL.  HDL annotation script generation is untested.

community.cadence.com/.../skill-method-to-optimize-netlist-pin-assignments-during-routing-using-allegro-orcad  

I think there's a SKILL script solution.  Have a method that allows you to place single pin parts on each net to drive net alias assignments at the connector to prevent/minimize via transitions...

The process starts by adding temporary single-pin components to the schematic having the final net alias name and add temporary net aliases on the connector side.

Ideally, these 1-pin temp parts would be a padstack small enough to cause a DRC error against one pin.  Not so large that multiple pins end up with DRC errors.  You won't be able to annotate the schematic reliably in a "first one wins" situation.

I'm basing this on a feature of DRC error properties:   Orcad/Allegro reports net names on both offending pins for each pad-to-pad DRC violation.

• As you plan out routing, place the temporary components close enough to connector pins having a "TEMP" net alias assigned to cause the error.  You want a pin-to-pin DRC error because that is what the script reads from.
• Using the short Skill script in GitHub, parses each of the pad-to-pad DRC errors, checks that one or the other net alias in the DRC error has a TEMP prefix.
• If it does, write out a line that renames the TEMP- net alias to match the final alias name.    This merges the two nets together after you upload an updated netlist. Skill code generates an annotation script to update your Orcad/Capture CIS schematic.
• After routing and annotation is complete, remove the temporary pad components from the schematic and netlist to the board to remove the single pin components.

I work for a CIS shop.  I wrote the framework for Concept HDL.  I don't have a library built to run HDL.  HDL annotation script generation is untested.

community.cadence.com/.../skill-method-to-optimize-netlist-pin-assignments-during-routing-using-allegro-orcad