xschemrc

#### xschemrc system configuration file

#### values may be overridden by user's ~/.xschem/xschemrc configuration file
#### or by project-local ./xschemrc

###########################################################################
#### XSCHEM INSTALLATION DIRECTORY: XSCHEM_SHAREDIR
###########################################################################
#### Normally there is no reason to set this variable if using standard
#### installation. Location of files is set at compile time but may be overridden
#### with following line:
# set XSCHEM_SHAREDIR $env(HOME)/share/xschem

###########################################################################
#### XSCHEM SYSTEM-WIDE DESIGN LIBRARY PATHS: XSCHEM_LIBRARY_PATH
###########################################################################
#### If unset xschem starts with XSCHEM_LIBRARY_PATH set to the default, typically:
# /home/schippes/.xschem/xschem_library
# /home/schippes/share/xschem/xschem_library/devices
# /home/schippes/share/doc/xschem/examples
# /home/schippes/share/doc/xschem/ngspice
# /home/schippes/share/doc/xschem/logic
# /home/schippes/share/doc/xschem/xschem_simulator
# /home/schippes/share/doc/xschem/binto7seg
# /home/schippes/share/doc/xschem/pcb
# /home/schippes/share/doc/xschem/rom8k

#### Flush any previous definition
set XSCHEM_LIBRARY_PATH {}
#### include devices/*.sym
append XSCHEM_LIBRARY_PATH ${XSCHEM_SHAREDIR}/xschem_library
#### include skywater libraries. Here i use [pwd]. This works if i start xschem from here.
append XSCHEM_LIBRARY_PATH :$env(PWD)
# append XSCHEM_LIBRARY_PATH :/mnt/sda7/home/schippes/pdks/sky130A/libs.tech/xschem
#### add ~/.xschem/xschem_library (USER_CONF_DIR is normally ~/.xschem)
append XSCHEM_LIBRARY_PATH :$USER_CONF_DIR/xschem_library 

###########################################################################
#### SET CUSTOM COLORS FOR XSCHEM LIBRARIES MATCHING CERTAIN PATTERNS
###########################################################################
#### each line contains a dircolor(pattern) followed by a color
#### color can be an ordinary name (grey, brown, blue) or a hex code {#77aaff}
#### hex code must be enclosed in braces
array unset dircolor
set dircolor(sky130_fd_pr$) blue
set dircolor(sky130_tests$) blue
set dircolor(xschem_sky130$) blue
set dircolor(xschem_library$) red
set dircolor(devices$) red

###########################################################################
#### WINDOW TO OPEN ON STARTUP: XSCHEM_START_WINDOW
###########################################################################
#### Start without a design if no filename given on command line:
#### To avoid absolute paths, use a path that is relative to one of the
#### XSCHEM_LIBRARY_PATH directories. Default: empty
set XSCHEM_START_WINDOW {sky130_tests/top.sch}

###########################################################################
#### DIRECTORY WHERE SIMULATIONS, NETLIST AND SIMULATOR OUTPUTS ARE PLACED
###########################################################################
#### If unset $USER_CONF_DIR/simulations is assumed (normally ~/.xschem/simulations) 
# set netlist_dir $env(HOME)/.xschem/simulations

###########################################################################
#### NETLIST AND HIERARCHICAL PRINT EXCLUDE PATTERNS
###########################################################################
#### xschem_libs is a list of patterns of cells to exclude from netlisting.
#### Matching is done as regular expression on full cell path
#### Example:
#### set xschem_libs { {/cmoslib/} {/analoglib/.*pass} buffer }
#### in this case all schematic cells of directory cmoslib and cells containing
#### /analoglib/...pass and buffer will be excluded from netlisting
#### default value: empty
# set xschem_libs {}
#### noprint_libs is a list with same rules as for xschem_libs. This
#### variable controls hierarchical print
#### default value: empty
# set noprint_libs {}

###########################################################################
#### CHANGE DEFAULT [] WITH SOME OTHER CHARACTERS FOR BUSSED SIGNALS 
#### IN SPICE NETLISTS (EXAMPLE: DATA[7] --> DATA<7>) 
###########################################################################
#### default: empty (use xschem default, [ ])
# set bus_replacement_char {<>}
#### for XSPICE: replace square brackets as the are used for XSPICE vector nodes.
# set bus_replacement_char {__} 

###########################################################################
#### SOME DEFAULT BEHAVIOR
###########################################################################
#### Allowed values:  spice, verilog, vhdl, tedax, default: spice
# set netlist_type spice

#### Some netlisting options (these are the defaults)
# set hspice_netlist 1
# set verilog_2001 1

#### to use a fixed line with set change_lw to 0 and set some value to line_width
#### these are the defaults
# set line_width 0
# set change_lw 1

#### allow color postscript and svg exports. Default: 1, enable color
# set color_ps 1

#### initial size of xschem window you can specify also position with (wxh+x+y)
#### this is the default:
# set initial_geometry {900x600}

#### if set to 0, when zooming out allow the viewport do drift toward the mouse position,
#### allowing to move away by zooming / unzooming with mouse wheel
#### default setting: 0
# set unzoom_nodrift 0

#### if set to 1 allow to place multiple components with same name.
#### Warning: this is normally not allowed in any simulation netlist.
#### default: 0, do not allow place multiple elements with same name (refdes)
# set disable_unique_names 0

#### if set to 1 continue drawing lines / wires after click
#### default: 0
# set persistent_command 1

#### if set to 1 a wire is inserted when separating components that are
#### connected by pins. Default: not enabled (0)
# set connect_by_kissing 1

#### if set to 1 automatically join/trim wires while editing
#### this may slow down on rally big designs. Can be disabled via menu 
#### default: 0
# set autotrim_wires 0

#### set widget scaling (mainly for font display), this is useful on 4K displays
#### default: unset (tk uses its default) > 1.0 ==> bigger 
# set tk_scaling 1.7

#### disable some symbol layers. Default: none, all layers are visible.
# set enable_layer(5) 0 ;# example to disable pin red boxes

#### enable to scale grid point size as done with lines at close zoom, default: 0
# set big_grid_points 0

###########################################################################
#### EXPORT FORMAT TRANSLATORS, PNG AND PDF
###########################################################################
#### command to translate xpm to png; (assumes command takes source 
#### and dest file as arguments, example: gm convert plot.xpm plot.png)
#### default: {gm convert}
# set to_png {gm convert}

#### command to translate ps to pdf; (assumes command takes source
#### and dest file as arguments, example: ps2pdf plot.ps plot.pdf)
#### default: ps2pdf
# set to_pdf ps2pdf
set to_pdf {ps2pdf -dAutoRotatePages=/None}

###########################################################################
#### UNDO: SAVE ON DISK OR KEEP IN MEMORY
###########################################################################
#### Alloved: 'disk'or 'memory'. 
#### Saving undo on disk is safer but slower on extremely big schematics.
#### In most cases you won't notice any delay. Undo on disk allows previous
#### state recovery in case of crashes. In-memory undo is extremely fast
#### but should a crash occur everything is lost.
#### It is highly recommended to keep undo on disk.
#### Default: disk
# set undo_type disk

###########################################################################
#### CUSTOM GRID / SNAP VALUE SETTINGS
###########################################################################
#### Warning: changing these values will likely break compatibility
#### with existing symbol libraries. Defaults: grid 20, snap 10.
# set grid 20
# set snap 10

###########################################################################
#### CUSTOM COLORS  MAY BE DEFINED HERE
###########################################################################
#  set cadlayers 22
#  set light_colors {
#   "#ffffff" "#0044ee" "#aaaaaa" "#222222" "#229900"
#   "#bb2200" "#00ccee" "#ff0000" "#888800" "#00aaaa"
#   "#880088" "#00ff00" "#0000cc" "#666600" "#557755"
#   "#aa2222" "#7ccc40" "#00ffcc" "#ce0097" "#d2d46b"
#   "#ef6158" "#fdb200" }

#  set dark_colors {
#   "#000000" "#00ccee" "#3f3f3f" "#cccccc" "#88dd00"
#   "#bb2200" "#00ccee" "#ff0000" "#ffff00" "#ffffff"
#   "#ff00ff" "#00ff00" "#0000cc" "#aaaa00" "#aaccaa"
#   "#ff7777" "#bfff81" "#00ffcc" "#ce0097" "#d2d46b"
#   "#ef6158" "#fdb200" }

###########################################################################
#### CAIRO STUFF
###########################################################################
#### Scale all fonts by this number
# set cairo_font_scale 1.0

#### default for following two is 0.85 (xscale) and 0.88 (yscale) to 
#### match cairo font spacing
# set nocairo_font_xscale 1.0
#### set nocairo_font_yscale 1.0

#### Scale line spacing by this number
# set cairo_font_line_spacing 1.0

#### Specify a font
# set cairo_font_name {Sans-Serif}
# set svg_font_name {Sans-Serif}

#### Lift up text by some zoom-corrected pixels for
#### better compatibility wrt no cairo version.
#### Useful values in the range [-1, 3]
# set cairo_vert_correct 0
# set nocairo_vert_correct 0

###########################################################################
#### KEYBINDINGS
###########################################################################
#### General format for specifying a replacement for a keybind
#### Replace Ctrl-d with Escape (so you wont kill the program)
# set replace_key(Control-d) Escape

#### swap w and W keybinds; Always specify Shift for capital letters
# set replace_key(Shift-W) w
# set replace_key(w) Shift-W

###########################################################################
#### TERMINAL
###########################################################################
#### default for linux: xterm
# set terminal {xterm -geometry 100x35 -fn 9x15 -bg black -fg white -cr white -ms white }
#### lxterminal is not OK since it will not inherit env vars: 
#### In order to reduce memory usage and increase the performance, all instances
#### of the lxterminal are sharing a single process. LXTerminal is part of LXDE

###########################################################################
#### EDITOR
###########################################################################
#### editor must not detach from launching shell (-f mandatory for gvim)
#### default for linux: gvim -f
# set editor {gvim -f -geometry 90x28}
# set editor { xterm -geometry 100x40 -e nano }
# set editor { xterm -geometry 100x40 -e pico }

#### For Windows
# set editor {notepad.exe}

###########################################################################
#### SHOW ERC INFO WINDOW (erc errors, warnings etc)
###########################################################################
#### default: 0 (can be enabled by menu)
# set show_infowindow 0

###########################################################################
#### CONFIGURE COMPUTER FARM JOB REDIRECTORS FOR SIMULATIONS
###########################################################################
#### RTDA NC
# set computerfarm {nc run -Il}
#### LSF BSUB
# set computerfarm {bsub -Is}

###########################################################################
#### TCP CONNECTION WITH GAW
###########################################################################
#### set gaw address for socket connection: {host port}
#### default: set to localhost, port 2020
# set gaw_tcp_address {localhost 2020}

###########################################################################
#### XSCHEM LISTEN TO TCP PORT
###########################################################################
#### set xschem listening port; default: not enabled
# set xschem_listen_port 2021

###########################################################################
#### BESPICE WAVE SOCKET CONNECTION
###########################################################################
#### set bespice wave listening port; default: not enabled
set bespice_listen_port 2022

###########################################################################
#### TCL FILES TO LOAD AT STARTUP
###########################################################################
#### list of tcl files to preload.
# lappend tcl_files ${XSCHEM_SHAREDIR}/change_index.tcl
lappend tcl_files ${XSCHEM_SHAREDIR}/ngspice_backannotate.tcl

###########################################################################
#### XSCHEM TOOLBAR
###########################################################################
#### default: not enabled.
set toolbar_visible 1
# set toolbar_horiz   1

###########################################################################
#### TABBED WINDOWS
###########################################################################
# default: not enabled. Interface can be changed runtime if only one window 
# or tab is open.
set tabbed_interface 1

###########################################################################
#### SKYWATER PDK SPECIFIC VARIABLES
###########################################################################

## check if env var PDK_ROOT exists, and use it for building open_pdks paths
if { [info exists env(PDK_ROOT)] && $env(PDK_ROOT) ne {} } {
  ## found variable, set tcl PDK_ROOT var
  if {![file isdir $env(PDK_ROOT)]} {
    puts stderr "Warning: PDK_ROOT environment variable is set but path not found on the system."
  }
  set PDK_ROOT $env(PDK_ROOT)
} else {
  ## not existing or empty. 
  puts stderr "Warning: PDK_ROOT env. var. not found or empty, trying to find an open_pdks install"
  if {[file isdir /usr/share/pdk]} {set PDK_ROOT /usr/share/pdk
  } elseif {[file isdir /usr/local/share/pdk]} {set PDK_ROOT /usr/local/share/pdk
  } elseif {[file isdir $env(HOME)/share/pdk]} {set PDK_ROOT $env(HOME)/share/pdk
  } else {
    puts stderr {No open_pdks installation found, set PDK_ROOT env. var. and restart xschem}
  }
}

if {[info exists PDK_ROOT]} {
  ## get process variant
  if {[info exists env(PDK)]} {
    set PDK $env(PDK)
  } else {
    set PDK sky130A
  }
  set SKYWATER_MODELS ${PDK_ROOT}/${PDK}/libs.tech/ngspice
  set SKYWATER_STDCELLS ${PDK_ROOT}/${PDK}/libs.ref/sky130_fd_sc_hd/spice
  puts stderr "open_pdks installation: using $PDK_ROOT"
  puts stderr "SKYWATER_MODELS: $SKYWATER_MODELS"
  puts stderr "SKYWATER_STDCELLS: $SKYWATER_STDCELLS"
}


# open_pdks specific:
# Set variables after ${PDK_ROOT} is known
# This overrides some of the variables set above.

set XSCHEM_START_WINDOW ${PDK_ROOT}/${PDK}/libs.tech/xschem/sky130_tests/top.sch
append XSCHEM_LIBRARY_PATH :${PDK_ROOT}/${PDK}/libs.tech/xschem