[PCB_FORUM] Re: Design Reuse From Existing Designs

  • From: "Mariani, Stephen" <smariani@xxxxxx>
  • To: <icu-pcb-forum@xxxxxxxxxxxxx>
  • Date: Fri, 11 Mar 2005 11:38:49 -0500

Carl,
 
I just read in the tech file and still no properties on the nets.

  _____  

From: Musetti, Carl [mailto:cmusetti@xxxxxxxxxxxxxxxx] 
Sent: Friday, March 11, 2005 11:21 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Design Reuse From Existing Designs


Stephen,
 
    If you read the tech file into the module before you read the logic
in and placed the parts the assignment table will not be set properly as
it can't make assignments with areas and net_spacing and
net_physical_types with out them present in the database. Trying reading
the tech file in after netlist and placement is done. This may clean it
all up.
 
Carl

        -----Original Message-----
        From: Mariani, Stephen [mailto:smariani@xxxxxx]
        Sent: Friday, March 11, 2005 11:07 AM
        To: icu-pcb-forum@xxxxxxxxxxxxx
        Subject: [PCB_FORUM] Design Reuse From Existing Designs
        
        

        I am creating a module from an existing design. I have done the
following: 

        1, Read in the tec file from the existing board and imported it
to the Module. 
        2, Read in the new tel file to the module. 
        3, Took existing (board I want to copy from) and exported the
placement. 
        4, Read the placement into the module, that placed only the
components I needed for the module. 
        5, Clipped all the traces, vias and fills from existing board
from specific area. 
        6, Imported clip files to the module. 

        Now I notice all the traces are missing properties. I am necking
down inside fine pitch BGA's and I have a ton of trace width errors.
Does anyone know how to import the net properties to my existing module?


        I tried reading in the netlist with properties but not sure this
is the best way? 

        Thanks 
        Steve 


        Stephen Mariani 
        Mercury Computer Systems, Inc. 
        199 Riverneck Road 
        Chelmsford, MA 01824 
        Phone: (978) 967-1855 
        Fax: (978) 244-0520 
        mailto:smariani@xxxxxx <mailto:smariani@xxxxxx>  

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