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Xic Variables

Xic maintains an internal list of keyword/value associations. Although this list can be used for general purposes, there are a number of special keywords, or ``variables'', whose value will affect Xic operation. Variables are set with the !set command, and can be unset with the !unset command. The script functions Set, Unset, SetExpand, and Get also provide an interface to this database. Variables can be set from the technology file, and a number of the buttons in menus and various pop-ups really do nothing more than control the state of one of these variables.

Any variable name can be set with the !set command. The variables and constructs that have meaning to Xic are summarized in the table below. These are described more fully in the sections that follow.

Special Constructs
!set List variables currently set
!set ? List these variables
@devname.property Set device property
Database
DatabaseResolution Set internal units
Paths and Directories
Path Design data file search path
LibPath Startup file and library search path
HelpPath Help file search path
ScriptPath Script file search path
NoReadExclusive Don't move stripped path to front of search path
AddToBack Add stripped path to back of search path
DocsDir Directory containing release documentation
RgbTxtPath Path to system rgb.txt file
TeePrompt Copy messages to given filename or ``stdout''
General Visual
MouseWheel Set mouse wheel rate parameters
NoCheckUpdate Skip check for new release on startup
FullWinCursor Enable full-window cursor
CellThreshold Min size in pixels of displayed subcell, integer > = 0
LayerTable Layer table presentation: ``compact'' or ``tiny''
ListPageEntries Maximum entries per page in list pop-ups
MaxPrpLabelLen Max length of displayed prpty string
NoLocalImage Don't compose images locally
NoPixmapStore Don't use screen backing memory
NoDisplayCache Don't use multi-object rendering for boxes
PhysGridOrigin Set the origin of the grid displayed in physical mode
ScreenCoords Show window pixel coordinates
EdgeSnapMode Cursor edge-snapping mode
PixelDelta Cursor selection proximity is screen pixels
`!' Commands
InstallCmdFormat Installation command string for !update command
JoinMaxPolyVerts Upper bound of vertices in polygons from join (def. 600)
JoinMaxPolyGroup Limit number trapezoids per poly in join (def. 300)
JoinMaxPolyQueue Limit number trapezoids to form polys in join (def. 1000)
JoinBreakClean Manhattan split polygons with too many vertices
JoinSplitWires Include wires in join/split operations
PartitionSize Partition grid size in microns for layer operations
Shell Path to shell used for external commands
SpotSize Set mask granularity
Scripts
TclLibrary Path to Tcl shared library
TkLibrary Path to Tk shared library
LogIsLog10 The log function returns base-10 when set
Selections
MarkInstanceOrigin Show origin of selected instances
SelectTime Set delay (msec) to activate move
NoAltSelection Use legacy click-selection logic
MaxBlinkingObjects Maximum number of objects shown blinking
Side Menu Commands
LogoEndStyle End style for logos: 0 flush, 1 round, 2 extend
LogoPathWidth Path width for logos, 1 - 5
LogoAltFont Specify alternate font for logos
LogoPrettyFont Name of system font to use for logos
LogoPixelSize Specify the ``pixel'' size for logos
LogoToFile Create subcell for logos
NoMergeObjects Suppress merging new boxes,polygons
NoMergePolys Clip/merge boxes only when merging
MaxRoundSides Maximum sides used to approximate round objects
NoConstrainRound No DRC constraints creating round objects
PictorialDevs Use pictorial device menu
ShowDots Show electrical connections
SPICE Interface
SpiceListAll Include unconnected devices in Spice output
SpiceAlias Device key aliases for Spice output
SpiceHost Name of WRspice server
SpiceHostDisplay X display string to use on remote host
SpiceProg Path name of WRspice executable, supersedes below
SpiceExecDir Directory containing WRspice executable
SpiceExecName Name of WRspice executable
SpiceSubcCatchar Character used by WRspice in subcircuit expansion
SpiceSubcCatmode Mode for WRspice subcircuit expansion
CheckSolitary Report unconnected terminals in netlist
NoSpiceTools Do not show WRspice toolbar
File Menu - Printing
DefaultPrintCmd Default print command (printer name in Windows)
NoDriverLabels Don't use driver text for hard copy labels
PSlineWidth Set line width for postscript line draw
RmTempFileMinutes Set up temporary file removal
NoAskFileAction Don't ask before file actions in File Selection pop-up
Cell Menu Commands
ContextDarkPcnt Control illumination of context in Push command
Edit/Modify Menu Commands
MasterMenuLength Max. entries in master pull-down menu
UndoListLength Number of operations saved in the undo list
MaxGhostObjects Maximum number of objects shown in ghosting
NoWireWidthMag Don't change the width of magnified wires
CrCellOverwrite Allow Create Cell to overwrite memory cells
View Menu Commands
InfoInternal Use internal coordinates in info windows
PeekSleepMsec Per-layer delay in peek command, milliseconds
XSectThickness Xsect layer thickness in microns, default 0.5
RulerSnapToGrid Rulers snap to grid by default
LockMode Don't allow physical/electrical mode change
Attributes Menu Commands
TechNoPrintPatMap Use hex format for stipple maps when writing tech file
TechPrintDefaults Set printing of default values in tech file update
EraseBehindProps Erase behind phys properties in props command
PhysPropTextSize Pixel text height used in props command
Convert Menu - General
ChdFailOnUnresolved Halt CHD operation if unresolved cell
ChdCmpThreshold Set CHD compression block size threshold
MultiMapOk Allow non-1-1 mapping of Xic layers and GDSII layer/datatypes
NoPopUpLog Don't pop up log file if warnings or errors
UnknownGdsLayerBase Base number for generated GDSII layers
UnknownGdsDatatype Datatype for generated GDSII layers
NoStrictCellnames Allow white space in cell names
Convert Menu -- Input and ASCII Output
ChdLoadTopOnly Load requested cell from CHD only, create reference
ChdRandomGzip Use random-access table for gzipped files
AutoRename Automatically change clashing cell names when reading
NoAskOverwrite Suppress prompting for overwrite instructions
NoOverwritePhys Don't overwrite phys memory cells when reading
NoOverwriteElec Don't overwrite elec memory cells when reading
NoOverwriteLibCells Don't overwrite library cells when reading
MergeInput Merge boxes and coincident objects when reading
NoPolyCheck Skip polygon reentrancy tests when reading
DupCheckMode Check for duplicate items when reading
NoCheckEmpties Skip checking for empty cells while reading
NoReadLabels Ignore text labels when reading physical cell data
LayerList Layer list for conversion input filtering
UseLayerList How to use layer list, skip or use only
LayerAlias List of name=alias pairs
UseLayerAlias Map layers using layer alias list
InToLower Map lower case cell names to upper in archive read
InToUpper Map upper case cell names to lower in archive read
InUseAlias Use alias file when reading archive
InCellNamePrefix Cell name translation prefix for archive read
InCellNameSuffix Cell name translation suffix for archive read
NoMapDatatypes New layers take all datatypes in GDSII read
CifLayerMode CIF layer resolution method, 0-2
OasReadNoChecksum Ignore checksum in OASIS input file
OasPrintNoWrap Use one line per record in OASIS ASCII output
OasPrintOffset Add file offsets to OASIS ASCII output
Convert Menu -- Output
StripForExport Strip all format extensions from output file
WriteAllCells Write library cells when creating archive file
SkipInvisible Do not write invisible layers to output
KeepBadArchive Don't delete failed conversion output archive file
NoCompressContext Don't compress instance lists in archive context
RefCellAutoRename Use auto-rename when writing reference cell data
UseCellTab Enable use of the cell override table in CHD access
SkipOverrideCells Skip cells in override table in CHD access
OutToLower Map lower case cell names to upper in archive write
OutToUpper Map upper case cell names to lower in archive write
OutUseAlias Use alias file when writing archive
OutCellNamePrefix Cell name translation prefix for archive write
OutCellNameSuffix Cell name translation suffix for archive write
CifOutStyle CIF output dialect and extensions specifier
CifOutExtensions CIF output extension flags
CifAddBBox Add bounding box comment to objects in CIF output
GdsOutLevel GDSII release level conformance code (0-2)
GdsMunit Modify M-UNITS value in GDSII output file
NoGdsMapOk Ignore unmapped layers in GDSII/OASIS output
OasWriteCompressed Compress records in OASIS output
OasWriteNameTab Use string table referencing in OASIS output
OasWriteRep Try to combine similar objects in OASIS output
OasWriteChecksum Compute and add checksum to OASIS output
OasWriteNoTrapezoids Don't convert polys to trapezoids
OasWriteWireToBox Convert wires to boxes when possible
OasWriteRndWireToPoly Convert rounded-end wires to polygons
OasWriteNoGCDcheck Don't look for common divisors in repetitions
OasWriteUseFastSort Use faster but less effective sorting
OasWritePrptyMask Don't write certain properties
Custom Property Filtering
PhysPrpFltCell Physical cell property filter string
PhysPrpFltInst Physical instance property filter string
PhysPrpFltObj Physical object property filter string
ElecPrpFltCell Electrical cell property filter string
ElecPrpFltInst Electrical instance property filter string
ElecPrpFltObj Electrical object property filter string
Extract Menu Commands
EraseBehindTerms Erase behind physical mode terminals marks
TermTextSize Pixel height of text used in terminal marks
TermMarkSize Pixel width of cross used for terminal marks
ExtractOpaque Ignore the OPAQUE flag in extraction
FlattenPrefix Cell name prefix to flatten in extraction
GroundPlaneGlobal Ground all pieces of clear-field ground plane
GroundPlaneMulti Handle nets in dark-field ground plane
GroundPlaneMethod Set ground plane inversion method 0-2
KeepSortedDevs Include devices with terminals shorted
LvsFailNoConnect Force LVS failure if unconnected physical instance
NoPermute Skip permutation search in association
NoMergeParallel Never merge parallel devices
NoMergeSeries Never merge series devices
NoMeasure Suppress measuring parameters of devices
QpathGroundPlane "Quick" Path, use of inverted ground plane, 0-2
NoEnet Don't print net, enet command
EnetSpice Do include SPICE listing, enet command
EnetBottomUp Use leaf-to-root ordering in electrical netlist
NoPnet Don't print extracted net list, pnet command
NoPnetDevs Don't print extracted device list, pnet command
NoPnetSpice Don't print extracted SPICE list, pnet command
PnetBottomUp Use leaf-to-root ordering in physical netlist
PnetShowGeometry Include wire geometry in netlist file, pnet command
PnetIncludeWireCap Include routing caps in SPICE netlist, pnet command
PnetListAll List ignored and flattened subcells, pnet command
PnetNoLabels Ignore terminal labels in pnet command
SourceAllDevs Update internal-named devices in sourc command
SourceCreate Create devices in sourc command even if not empty
SourceClear Clear cell before updating with sourc command
SourceGndDevName Name of ground device used with sourc command
SourceTermDevName Name of terminal device used with sourc command
NoExsetAllDevs Don't use internal-named devices in exset command
NoExsetCreate Don't create devices in exset command
ExsetClear Clear cells before updating in exset command
ExsetIncludeWireCap Include routing capacitance in exset command
ExsetNoLabels Ignore terminal labels in exset command
PathFileVias Include vias in wire net files
RLSolverDelta Overriding grid spacing for resistance/inductance extraction
RLSolverTryTile Attempt to use tiling grid for resistance/inductance extraction
RLSolverGridPoints Grid points per device when not tiling
RLSolverMaxPoints Maximum grid points per device when tiling
FastCap/FastHenry Interface
FxPlaneBloat Overhang of interface planes and dark-field conductors
FxUnits FastCap/FastHenry file units: m, cm, mm, um, in, mils
FxForeg FastCap/FastHenry run in foreground if set
FcNoPart Skip all FastCap partitioning
FcPartMax Maximum FastCap top/bottom panel dimension
FcEdgeMax Maximum FastCap edge panel dimension
FcThinEdge FastCap outside edge panel width
FcOldFormat Use original FastCap file format
FcPath FastCap executable directory path
FcArgs FastCap command line arguments
FhMinRectSize Minimum rectangle dimension for Manhattanization
FhPath FastHenry executable directory path
FhArgs FastHenry command line arguments
FhFreq FastHenry frequency specification
Help System
HelpMultiWin Use separate windows for help references
NoHelpDefault Suppress default help window



Subsections
next up previous contents index
Next: Special Constructs Up: xicmanual Previous: Special Escapes   Contents   Index
Stephen R. Whiteley 2012-04-01