marking net/wire in layout by layer

Hi Raghu,

The Mark Net functionality doesn't (I think) have a stepping mode like this, whereas the Net Tracer in Virtuoso Layout Suite XL does (sort of). It has a toolbar for net tracer and in IC618 there's a "step" mode which is (sort of) like this. It allows you to step through the connections (I'm not sure it's quite per layer, but it may be good enough). It's covered partially in this video: https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1O0V000009ET1AUAW&pageName=ArticleContent but I would suggest that in IC618 you add the Window->Toolbars->Net Tracer and pick the Add/Remove step trace icon from the toolbar, and then you can click on a shape - see the initial highlights, then step through as it follows more connections.

Andrew.

Hi Andrew,

Thanks for the info. I tried few possibilities using leMarkNet() . It has optional keyword called  highlightIncrementally?  in the description but when Iam using this It says unrecognizable keyword. Help me through this if you have any idea.

In extension to this just by  placing cursor(instead of selecting shape) on some layer can we read the layer description using skill ? I need this to use in IF clause to use in part of my script .

Thanks again Andrew.

Regards,

Raghu

Not sure what version you're using, but ?highlightIncrementally t works for me (in IC618 at least). However, I don't think it does what you want - all it does is mark the entire net in batches and show you in the CIW as it adds more shapes in batches:

(LE-101007): Number of shapes processed by Mark Net: 10000...
(LE-101007): Number of shapes processed by Mark Net: 30000...
(LE-101007): Number of shapes processed by Mark Net: 60000...
(LE-101007): Number of shapes processed by Mark Net: 80000...

etc.

If you just want to find the shape under the cursor, you could use dbShapeQuery or dbGetOverlaps with a bBox which consists of the point you're at twice (i.e. a zero-area rectangle). It's not that clear what your second question is really asking, I'm afraid.

Regards,

Andrew

Hi Andrew,

Thanks a lot.

My second question is about getting the layer details(for eg: bbox of it ) hovering mouse over it without selecting.

Thanks again,

Raghu

Are you aware of the Dynamic Selection Assistant (Window->Assistants->Dynamic Selection) which gives you a UI to find this information (not the bBox, but the layer)?

Otherwise, this would be:

procedure(CCFgetLayerInfoUnderCursor()
  let((pt overlaps)
    pt=hiGetCommandPoint()
    overlaps=dbGetOverlaps(geGetEditCellView() list(pt pt) t)
    foreach(shape overlaps
      when(shape~>lpp
        printf("Layer: %L bBox: %L\n" shape~>lpp shape~>bBox)
      )
    )
    t
  )
)

Put CCFgetLayerInfoUnderCursor() on a bind key and then hit the key over a shape or shapes in the layout window.

Andrew.

Are you aware of the Dynamic Selection Assistant (Window->Assistants->Dynamic Selection) which gives you a UI to find this information (not the bBox, but the layer)?

Otherwise, this would be:

procedure(CCFgetLayerInfoUnderCursor()
  let((pt overlaps)
    pt=hiGetCommandPoint()
    overlaps=dbGetOverlaps(geGetEditCellView() list(pt pt) t)
    foreach(shape overlaps
      when(shape~>lpp
        printf("Layer: %L bBox: %L\n" shape~>lpp shape~>bBox)
      )
    )
    t
  )
)

Put CCFgetLayerInfoUnderCursor() on a bind key and then hit the key over a shape or shapes in the layout window.

Andrew.

thanks andrew,

Raghu

Hi Andrew,

This is working for shapes in current level . Can we get atleast layer info if the shapes are in other hierarchies as well ?

Thanks,

Raghu

ok Got it. We can specify stop level in the command options

Thanks