Product Documentation
Virtuoso Layout Viewer User Guide
Product Version IC23.1, August 2023

Preselect and Selection Object Information Display

You can view object information in two modes, before selecting objects (preselection mode) or after selecting objects (selection mode). The preselect and selection object information is displayed by default on the Show Selection Info dockable toolbar in the design window.

The preselect and selection object information is displayed for both fully and partially selected objects. This information is also displayed when a command is active. The following figure shows the preselect information for an instance on the Show Selection Info toolbar. The information is displayed in the following format:

PreSel: Inst Name(InstName) CellName(Cell)

The following figure shows the selection information for the selected instance. The information is displayed in the following format:

Select: Inst Name(InstName) CellName(Cell)

(Virtuoso RF Option) You can view preselect and selection information for curvilinear geometries such as curved paths and curved polygons.

To access the Show Selection Info toolbar, you can use either of the following ways:

Preselect and Selection Object Information Format

The following table lists the preselect and selection information displayed on the Show Selection Info toolbar for various types of objects.

Object Preselect and Selection Object Information

Area Boundary

PreSel: Area Boundary

Select: Area Boundary

Blockages

PreSel: Placement Blockage Layer(layer) Color

Select: Placement Blockage Layer(layer purpose) Color

Blockages include Routing Blockage, Fill Blockage, Slot Blockage, Pin Blockage, FeedThruBlockage, and Screen Blockage.

Bus

PreSel: PathSeg Layer(layer purpose) Net(netname)

Select: PathSeg Layer(layer purpose) Net(netname)

Cluster Boundary

PreSel: Cluster Boundary

Select: Cluster Boundary

FigGroup

PreSel: FigGroup Name(FigGroupName)

Select: FigGroup Name(FigGroupName)

Fluid Guard Ring

PreSel: Inst Name(InstName) CellName(Cell)

Select: Inst Name(InstName) CellName(Cell)

Halo Blockage

PreSel: Halo Blockage

Select: Halo Blockage

Instance

PreSel: Inst Name(InstName) CellName(Cell)

Select: Inst Name(InstName) CellName(Cell)

Label

PreSel: Label Text(TextName) Layer(layer purpose)

Select: Label Text(TextName) Layer(layer purpose)

Marker

PreSel: Marker ShortMsg(short message) Severity (severity)

Select: Marker ShortMsg(short message) Severity (severity)

Modgen

PreSel: Modgen

Select: Modgen

Mosaic

PreSel: Mosaic Name(MosaicName) CellName(Cell)

Select: Mosaic Name(MosaicName) CellName(Cell)

MPP Guard Ring

PreSel: MPP   Layer(layer purpose) Net(NetName)

Select: MPP   Layer(layer purpose) Net(NetName)

Multipart Path

PreSel: MPP Layer(layer purpose) Net(NetName)

Select: MPP Layer(layer purpose) Net(NetName)

Pin

PreSel: Pin Term(TermName) Layer(layer purpose) Color LockState

Select: Pin Term(TermName) Layer(layer purpose) Color LockState

Placement Blockage

PreSel: Placement Blockage

Select: Placement Blockage

PR Boundary

PreSel: PR Boundary

Select: PR Boundary

Row

PreSel: Row Site(sitedefname)

Select: Row Site(sitedefname)

Ruler

PreSel: Ruler Length(Length)

Select: Ruler Length(Length)

Shape

A shape refers to a path, pathseg, polygon, rectangle, circle, ellipse, and donut. For example, the following format is used to display information for a path.

PreSel: Path Layer(layer purpose) Net(netname)Color LockState

Select: Path Layer(layer purpose) Net(netname)Color LockState

On the toolbar, instead of the full purpose name, the abbreviation for purpose is displayed. The Net field is displayed only if a net is present. Color and lock state are displayed on colored layers. For a path and pathseg, Width is also displayed. For a rectangle, Width and Height are displayed.

In Virtuoso Layout Suite XL and and higher tiers, for Edit In Place and Descend Edit commands, the cellname of the shape one level above in the hierarchy is also displayed. For example:

PreSel: CellName(Cell) | Rect Layer(layer purpose) Width(n1) Height(n2)

Snap Boundary

PreSel: Snap Boundary

Select: Snap Boundary

SyncClone

PreSel: SyncClone Name(name)

Select: SyncClone Name(name)

TextDisplay

PreSel: TextDisplay Text(Text)

Select: TextDisplay Text(Text)

Via

Via on non-colored layers:

PreSel: Via ViaDef(ViaDefName) Net(NetName)

Select: Via ViaDef(ViaDefName) Net(NetName)

Via on colored layers, where LockState is displayed only if the state is locked:

PreSel: Via ViaDef(ViaDefName) Net(NetName) Layer1(Color LockState) cutLayer(Color LockState) Layer2(Color LockState)

Select: Via ViaDef(ViaDefName) Net(NetName) Layer1(Color LockState) cutLayer(Color LockState) Layer2(Color LockState)

ViaStack

Via stack on non-colored layers:

PreSel: Via ViaDef(ViaDefName) Net(NetName)

Select: Via ViaDef(ViaDefName) Net(NetName)

Via stack on colored layers, where LockState is displayed only if the state is locked:

PreSel: Via ViaDef(ViaDefName) Net(NetName) Layer1(Color LockState) cutLayer(Color LockState) Layer2(Color LockState)

Select: Via ViaDef(ViaDefName) Net(NetName) Layer1(Color LockState) cutLayer(Color LockState) Layer2(Color LockState)

Virtual Group

PreSel: Virtual FigGroup Name (figGroupName) Type (type) PlacementStatus (status) StopLevel (number)

Select: Virtual FigGroup Name (figGroupName) Type (type) StopLevel (number)

The Type parameter can be Generated, Clone, or Created. If Placement Status of a virtual hierarchy is not set to Fixed or Locked, the Show Selection Info toolbar does not display any information about the placement status.

Virtual Pin

PreSel: Virtual Pin Layer(name purpose) Net(netname) Width(width) Height(height)

Select: Virtual Pin Layer(name purpose) Net(netname) Width(width) Height(height)

Wire

PreSel: PathSeg Layer(layer purpose) Net(netname)

Select: PathSeg Layer(layer purpose) Net(netname)
For a valid selection set, in the preselection mode only one command is performed.

Related Topics

Object Information Display Criteria

Design Display Controls


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