[PCB_FORUM] Re: Concept Bus Name, Bus Tap

I struggled with Concept bus methodology recently.  I am used to
ViewDraw/DxDesigner, where there are no "taps" and especially are no little
numbers...you just attach a net to the bus, and name the net one of the
signals of the bus.

I'm curious, why Concept uses bus taps and what the little numbers are used
for?  Is there any functional advantage to this method over the way
ViewDraw/DxD does busses?  I believe we figured out how to make the little
numbers invisible, so they aren't as annoying.

Another downside of the Concept method (at least that I experienced) is
because of the "tap" you can't have nets directly off both sides of a bus,
since you can only have one net attached to one tap, which means this
"method" takes up twice as much room.

Regards,

Austin
  -----Original Message-----
  From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]On Behalf Of Mark Salberg
  Sent: Friday, April 07, 2006 1:17 PM
  To: icu-pcb-forum@xxxxxxxxxxxxx
  Subject: [PCB_FORUM] Re: Concept Bus Name, Bus Tap


  Thanks Helen.
  I was under the impression that The Bus Name Ddialog box was to attach the
Name<7.. 0>  to the single thick bus wire.
  Why would you draw the 8 wires, drag the bus name across as you describe.

  Looks like I have to assign "netname" NOT "Busname", then add 1st tap and
wire, copy (x7) as group, then add bus tap values.
  Only thing worth using pull-down for is assign bus tap vales (only if they
are in order) 7..0 or 0..7.

  This is what I end up with.


  This is what I want to have:



  Thanks again for your feedback.
  Mark
  Efanov Helen-W18982 wrote:

    Mark,

    To use "Bus name " dialog box draw 8 wires for <7.. 0>, click above top
most and below bottom. You have one wire so it is temp<7>.

    This method is to attach each wire to pin. If you need bus: draw a wire
> name it  Name<7.. 0> , wire will be changed to thick automatically. Now
you can use Wire > Bus Tap clicking on pin, then on thick wire. Then you
will use Wire > Bus Tap Values dialog and click above and below taps.

    Helen



----------------------------------------------------------------------------
    From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Mark Salberg
    Sent: Wednesday, April 05, 2006 6:47 AM
    To: Cadence User Group
    Subject: [PCB_FORUM] Concept Bus Name, Bus Tap


    Hello group,
    We are forced to manually add a bus name as a signame and manually place
a bus tap because of problems with the wire pull-down menu.
    (Concept v.15.1)
    Are you experiencing the same problems?

    Problem 1.
    When selecting Wire / Bus name pulldown, setting name, MSB, LSB as shown
below:

    This is what I get after attaching to a wire. Where is the <7..0>???


    Problem 2: I set Tools / Options / Graphics Tab as shown below, but the
wire does not display "heavy".


    Problem 3: We prefer TAP instead of CTAP in Cadence's "STANDARD"
library. Which we normally place manually. (see below)
    If I select TAP for default Tap Symbol above, it does NOT come in
because the origin is not on the pin to attach to the selected bus wire. It
is in the center of the part. Also the second pin is NOT on the same "X"
axis.

    here is the message I get when adding TAP instead of CTAP:




    Any help would be appreciated.
    Thanks,
    Mark







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