Home > Community > Forums > PCB Design > Net names and illegal characters

Email

* Required Fields

Recipients email * (separate multiple addresses with commas)

Your name *

Your email *

Message *

Contact Us

* Required Fields
First Name *

Last Name *

Email *

Company / Institution *

Comments: *

 Net names and illegal characters 

Last post Tue, Jan 15 2013 7:22 AM by TH Designs. 3 replies.
Started by TH Designs 14 Jan 2013 01:09 PM. Topic has 3 replies and 810 views
Page 1 of 1 (4 items)
Sort Posts:
  • Mon, Jan 14 2013 1:09 PM

    • TH Designs
    • Top 25 Contributor
    • Joined on Fri, Apr 13 2012
    • Warminster, PA
    • Posts 269
    • Points 4,370
    Net names and illegal characters Reply

    In our previous designs I would append a \\ to the end of a net alias to signify that it is active low. Example; OUTPUT ENABLE\\

    Now I find that the "\\" is considered an illegal character so I have two questions

    1. I'm open for suggestions as to a different approach on how to show that the net is active low within the net alias

    2. Is there a way to catch these "illegal net names" in Capture before I go and import the logic into PCB Editor. I have run all sorts of error checking in capture and these nets do not come up as being problems.

    Tom

    • Post Points: 35
  • Tue, Jan 15 2013 1:28 AM

    • steve
    • Top 10 Contributor
    • Joined on Fri, Jul 18 2008
    • Woking, Surrey
    • Posts 1,054
    • Points 16,975
    Re: Net names and illegal characters Reply

    There is currently no DRC for illegal net names. (Talk to your VAR and put in an enhancement request). With 16.6 there are custom DRCs so you might be able to write on using Tcl/Tk.

    The \O\E works for pin names but not net names. You could use _H, _L or _P, _N as alternative netnames (Again raise an enhancement request with your VAR).

    • Post Points: 5
  • Tue, Jan 15 2013 4:52 AM

    • fxffxf
    • Top 25 Contributor
    • Joined on Thu, Jul 17 2008
    • ., AK
    • Posts 283
    • Points 4,525
    Re: Net names and illegal characters Reply

     try setting the allegro environment variable legacy_character_set. You can find it in the environment editor (enved)

    • Post Points: 20
  • Tue, Jan 15 2013 7:22 AM

    • TH Designs
    • Top 25 Contributor
    • Joined on Fri, Apr 13 2012
    • Warminster, PA
    • Posts 269
    • Points 4,370
    Re: Net names and illegal characters Reply
    fxffxf:

     try setting the allegro environment variable legacy_character_set. You can find it in the environment editor (enved)

    That works like a champ!

    That little check box just saved me tons of work!

    Thanks

     Tom

    • Post Points: 5
Page 1 of 1 (4 items)
Sort Posts:
Started by TH Designs at 14 Jan 2013 01:09 PM. Topic has 3 replies.