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What's Good About Net Color Override in Allegro? Check Out The SPB16.2 Release and See!

Comments(6)Filed under: PCB design, SPB 16.2, Allegroro, color

Color assignment in Allegro PCB Editor has been accomplished with either a class/subclass color assignment or a color assignment done with the highlight command. With designs becoming more complex, it's desirable to be able to assign colors, including custom colors to independent objects.

Database elements may be displayed using either the class/subclass color or a single color assigned to an element, also known as a custom color. To assign a custom color to an entire net or to its pins, vias, clines, shapes, or rats, you use the Nets grid. Assigning a custom color automatically enables the custom color state for that element as well, meaning that the custom color displays in the design canvas.

net_color1


You can also define how the custom color displays the element using a combination of states — none, highlight or custom color state, or highlight plus custom color state — all of which may be set independently. Highlighting or custom colors are set or unset by right clicking and choosing Set Highlight State or Clear Highlight State, respectively in the color chip. If an object is highlighted the text for that object type will be in bold.

net_color2

 

net_color3

 

To prevent a custom color from displaying in both the Nets tree and the design, right click and choose Clear Custom Color. A color box without a color assigned to it has no custom color state. These custom color and highlighting states affect the display of the element as follows:

   Custom Color   
   Highlight State  
   Custom Color   
         State
 
Display Using
Yes
No
No
  Class/subclass color
Yes
Yes
No
  Highlighted color
Yes
Yes
Yes
  Highlighted color
Yes
Yes
No
  Custom color. No highlighting
No
Yes
No
  Highlight with temporary highlight color
No
No
Yes
  Custom color with tempororary highlight color 
No
No
No
  Class/subclass color

 

As always - I welcome your question & suggestions.
Jerry "GenPart" Grzenia

Comments(6)

By Ro on November 11, 2009
Someone put a lot of thought into this feature, thanks for the good work.  It's so much easier to use.

By Jerry GenPart on November 11, 2009
Glad you're using the benefits of this new capability.
Jerry

By jy on April 21, 2011
Hello Jerry,
I've used this assign color recently. But I'm wonder why I'm not able to see the color changed after assigning the color. I've checked on the color display, it shown the particle nets was already have the color assigned, the problem is I'm not able to view it. Thanks!

By Jerry GenPart on April 21, 2011
Hi JY,
This should work just fine. I've Emailed you a movie on how to accomplish this and a sample .brd. Let me know.
Jerry G.

By Dale on July 21, 2011
I like the feature, but I find cross probing to the schematic will reset the colors. Very annoying!

By Jerry GenPart on July 22, 2011
Hi Dale,
Could I ask that you contact our Cadence Customer Support team (and ask for an Allegro expert AE) so that we can help you with this? The colors should not be getting reset.
Jerry G.

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