OpenRAM/technology/freepdk45/tech/freepdk45.lydrc

<?xml version="1.0" encoding="utf-8"?>
<klayout-macro>
 <description/>
 <version/>
 <category>drc</category>
 <prolog/>
 <epilog/>
 <doc/>
 <autorun>false</autorun>
 <autorun-early>false</autorun-early>
 <shortcut/>
 <show-in-menu>true</show-in-menu>
 <group-name>drc_scripts</group-name>
 <menu-path>tools_menu.drc.end</menu-path>
 <interpreter>dsl</interpreter>
 <dsl-interpreter-name>drc-dsl-xml</dsl-interpreter-name>
 <text>
#
#  DRC  for  FreePDK45 according to :
#   https://www.eda.ncsu.edu/wiki/FreePDK45:RuleDevel
#   https://www.eda.ncsu.edu/wiki/FreePDK45:Contents
#
##########################################################################################
tstart = Time.now

# optionnal for a batch launch :   klayout -b r drc_FreePDK45.lydrc -rd input=my_layout.gds -rd topcell=your_topcell -rd output=drc_FreePDK45.lyrdb
if $input
  if $topcell
    source($input,$topcell)
  else
    source($input)
  end
end

if $output
  report("FreePDK45 DRC runset", $output)
else
  report("FreePDK45 DRC runset", "FreePDK45_DRC.lyrdb")
end

# DRC test to run or not
###############
OFFGRID = true
ANTENNA = true
DRC = true

# KLAYOUT setup
########################
# Use a tile size of 1mm
# tiles(100.um)
# Use a tile border of 10 micron:
# tile_borders(1.um)
# no_borders

# Hierachical
deep

# Use 4 CPU cores
threads(4)
verbose(true)

# layers definitions
########################
active     = polygons(1, 0)
pwell      = polygons(2, 0)
nwell      = polygons(3, 0)
nplus      = polygons(4, 0)
pplus      = polygons(5, 0)
vtg        = polygons(6, 0)
vth        = polygons(7, 0)
thkox      = polygons(8, 0)
poly       = polygons(9, 0)
cont       = polygons(10, 0)
metal1     = polygons(11, 0)
via1       = polygons(12, 0)
metal2     = polygons(13, 0)
via2       = polygons(14, 0)
metal3     = polygons(15, 0)
via3       = polygons(16, 0)
metal4     = polygons(17, 0)
via4       = polygons(18, 0)
metal5     = polygons(19, 0)
via5       = polygons(20, 0)
metal6     = polygons(21, 0)
via6       = polygons(22, 0)
metal7     = polygons(23, 0)
via7       = polygons(24, 0)
metal8     = polygons(25, 0)
via8       = polygons(26, 0)
metal9     = polygons(27, 0)
via9       = polygons(28, 0)
metal10    = polygons(29, 0)

# Computed layers
well = nwell.or(pwell)
gate = poly &amp; active
implant = nplus.or(pplus)

if DRC

# DRC section
########################
info("DRC section")

# splits a layer classes with increasing min dimensions
def classify_by_width(layer, *dimensions)
  dimensions.collect { |d| layer = layer.sized(-0.5 * (d - 1.dbu)).sized(0.5 * (d - 1.dbu)) }
end

#   Wells
nwell.and(pwell).output("WELL.1", "WELL.1 : nwell/pwell must not overlap")
# the rule "WELL.2 : Minimum spacing of well at different potential : 225nm" was not coded : see : https://www.klayout.de/forum/discussion/comment/6021
# the rule WELL.3 was not detected in the original FreePDK45 rule deck
#nwell.space(135.nm, euclidian).output("WELL.3", "WELL.3 : Minimum spacing of nwell at same potential : 135nm")
#pwell.space(135.nm, euclidian).output("WELL.3", "WELL.3 : Minimum spacing of pwell at same potential : 135nm")
well.separation(well, 200.nm, euclidian).output("WELL.4", "WELL.4 : Minimum width of nwell/pwell : 200nm")
vtg.not(well).output("VT.1","VT.1 : Vtg adjust layers must coincide with well")
vth.not(well).output("VT.1","VT.1 : Vth adjust layers must coincide with well")

 #   Poly
poly.width(50.nm, euclidian).output("POLY.1", "POLY.1 : Minimum width of poly : 50nm")
poly_sep_active = poly.separation(active, 140.nm, projection)
if poly_sep_active.polygons?
  poly_sep_active.polygons.without_area(0).output("POLY.2", "POLY.2 : Minimum spacing of poly AND active: 140nm")
end
poly_sep_active.forget
poly.enclosing(gate, 55.nm, projection).polygons.without_area(0).output("POLY.3", "POLY.3 : Minimum poly extension beyond active : 55nm")
active.enclosing(gate, 70.nm, projection).polygons.without_area(0).output("POLY.4", "POLY.4 : Minimum enclosure of active around gate : 70nm")
poly.not(active).separation(active, 50.nm, projection).polygons.without_area(0).output("POLY.5", "POLY.5 : Minimum spacing of field poly to active: 50nm")
poly.space(75.nm, euclidian).output("POLY.6", "POLY.6 : Minimum spacing of field poly: 75nm")

 #   Active
active.width(90.nm, euclidian).output("ACTIVE.1", "ACTIVE.1 : Minimum width of active : 90nm")
active.space(80.nm, euclidian).output("ACTIVE.2", "ACTIVE.2 : Minimum spacing of active : 80nm")
well.enclosing(active, 55.nm, euclidian).output("ACTIVE.3", "ACTIVE.3 : Minimum enclosure/spacing of nwell/pwell to active: 55nm")
active.not(well).output("ACTIVE.4", "ACTIVE.4 : active must be inside nwell or pwell")

#   Implant
implant.separation(gate, 70.nm, projection).polygons.without_area(0).output("IMPLANT.1", "IMPLANT.1 : Minimum spacing of nimplant/ pimplant to channel : 70nm")
implant.separation(cont, 25.nm, projection).polygons.without_area(0).output("IMPLANT.2", "IMPLANT.1 : Minimum spacing of nimplant/ pimplant to contact : 25nm")
implant.width(45.nm, euclidian).output("IMPLANT.3", "IMPLANT.3 : Minimum width of nimplant/ pimplant  : 45nm")
implant.space(45.nm, euclidian).output("IMPLANT.4", "IMPLANT.4 : Minimum spacing of nimplant/ pimplant  : 45nm")
nplus.and(pplus).output("IMPLANT.5", "IMPLANT.5 : Nimplant and pimplant must not overlap")
implant.forget

#   Contact
cont.edges.without_length(65.nm).output("CONTACT.1", "CONTACT.1 : Minimum/Maximum width of contact : 65nm")
cont.space(75.nm, euclidian).output("CONTACT.2", "CONTACT.2 : Minimum spacing of contact : 75nm")
cont.not(active).not(poly).not(metal1).output("CONTACT.3", "CONTACT.3 : contact must be inside active or poly or metal1")
active.enclosing(cont, 5.nm, euclidian).output("CONTACT.4", "CONTACT.4 : Minimum enclosure of active around contact : 5nm")
poly.enclosing(cont, 5.nm, euclidian).output("CONTACT.5", "CONTACT.5 : Minimum enclosure of poly around contact : 5nm")
cont.separation(poly, 35.nm, euclidian).output("CONTACT.6", "CONTACT.6 : Minimum spacing of contact and poly : 35nm")

#   Metal1
metal1.width(65.nm, euclidian).output("METAL1.1", "METAL1.1 : Minimum width of metal1 : 65nm")
metal1.space(65.nm, euclidian).output("METAL1.2", "METAL1.2 : Minimum spacing of metal1 : 65nm")
cont_edges_with_less_enclosure = metal1.enclosing(cont, 35.nm, projection).second_edges
error_corners = cont_edges_with_less_enclosure.width(angle_limit(100.0), 1.dbu)
cont_edges_with_less_enclosure.forget
cont.interacting(error_corners.polygons(1.dbu)).output("METAL1.3", "METAL1.3 : Minimum enclosure around contact on two opposite sides : 35nm")
error_corners.forget
via1_edges_with_less_enclosure = metal1.enclosing(via1, 35.nm, projection).second_edges
error_corners = via1_edges_with_less_enclosure.width(angle_limit(100.0), 1.dbu)
via1_edges_with_less_enclosure.forget
via1.interacting(error_corners.polygons(1.dbu)).output("METAL1.4", "METAL1.4 : Minimum enclosure around via1 on two opposite sides : 35nm")
error_corners.forget
metal1_gt90, metal1_gt270, metal1_gt500, metal1_gt900, metal1_gt1500 = classify_by_width(metal1, 90.nm, 270.nm, 500.nm, 900.nm, 1500.nm)
metal1_gt90.edges.with_length(300.nm,nil).space(90.nm,euclidian).output("METAL1.5", "METAL1.5 : Minimum spacing of metal1 wider than 90 nm and longer than 300 nm : 90nm")
metal1_gt270.edges.with_length(900.nm,nil).space(270.nm,euclidian).output("METAL1.6", "METAL1.6 : Minimum spacing of metal1 wider than 270 nm and longer than 900 nm : 270nm")
metal1_gt500.edges.with_length(1.8.um,nil).space(500.nm,euclidian).output("METAL1.7", "METAL1.7 : Minimum spacing of metal1 wider than 500 nm and longer than 1.8 um : 500nm")
metal1_gt900.edges.with_length(2.7.um,nil).space(900.nm,euclidian).output("METAL1.8", "METAL1.8 : Minimum spacing of metal1 wider than 900 nm and longer than 2.7 um : 900nm")
metal1_gt1500.edges.with_length(4.um,nil).space(1500.nm,euclidian).output("METAL1.9", "METAL1.9 : Minimum spacing of metal1 wider than 1500 nm and longer than 4.0 um : 1500nm")
[ metal1_gt90, metal1_gt270, metal1_gt500, metal1_gt900, metal1_gt1500 ].each { |l| l.forget }

#   Via1
via1.edges.without_length(65.nm).output("VIA1.1", "VIA1.1 : Minimum/Maximum width of via1 : 65nm")
via1.space(75.nm, euclidian).output("VIA1.2", "VIA1.2 : Minimum spacing of via1 : 75nm")
via1.not(metal1).output("VIA1.3", "VIA1.3 : via1 must be inside metal1")
via1.not(metal2).output("VIA1.4", "VIA1.4 : via1 must be inside metal2")

#   metal2
metal2.width(70.nm, euclidian).output("METAL2.1", "METAL2.1 : Minimum width of  intermediate metal2 : 70nm")
metal2.space(70.nm, euclidian).output("METAL2.2", "METAL2.2 : Minimum spacing of  intermediate metal2 : 70nm")
via1_edges_with_less_enclosure = metal2.enclosing(via1, 35.nm, projection).second_edges
error_corners = via1_edges_with_less_enclosure.width(angle_limit(100.0), 1.dbu)
via1_edges_with_less_enclosure.forget
via1.interacting(error_corners.polygons(1.dbu)).output("METAL2.3", "METAL2.3 : Minimum enclosure around via1 on two opposite sides : 35nm")
error_corners.forget
via2_edges_with_less_enclosure = metal2.enclosing(via2, 35.nm, projection).second_edges
error_corners = via2_edges_with_less_enclosure.width(angle_limit(100.0), 1.dbu)
via2_edges_with_less_enclosure.forget
via2.interacting(error_corners.polygons(1.dbu)).output("METAL2.4", "METAL2.4 : Minimum enclosure around via2 on two opposite sides : 35nm")
error_corners.forget
metal2_gt90, metal2_gt270, metal2_gt500, metal2_gt900, metal2_gt1500 = classify_by_width(metal2, 90.nm, 270.nm, 500.nm, 900.nm, 1500.nm)
metal2_gt90.edges.with_length(300.nm,nil).space(90.nm,euclidian).output("METAL2.5", "METAL2.5 : Minimum spacing of  intermediate metal2 wider than 90 nm and longer than 300 nm : 90nm")
metal2_gt270.edges.with_length(900.nm,nil).space(270.nm,euclidian).output("METAL2.6", "METAL2.6 : Minimum spacing of  intermediate metal2 wider than 270 nm and longer than 900 nm : 270nm")
metal2_gt500.edges.with_length(1.8.um,nil).space(500.nm,euclidian).output("METAL2.7", "METAL2.7 : Minimum spacing of  intermediate metal2 wider than 500 nm and longer than 1.8 um : 500nm")
metal2_gt900.edges.with_length(2.7.um,nil).space(900.nm,euclidian).output("METAL2.8", "METAL2.8 : Minimum spacing of  intermediate metal2 wider than 900 nm and longer than 2.7 um : 900nm")
metal2_gt1500.edges.with_length(4.um,nil).space(1500.nm,euclidian).output("METAL2.9", "METAL2.9 : Minimum spacing of  intermediate metal2 wider than 1500 nm and longer than 4.0 um : 1500nm")
[ metal2_gt90, metal2_gt270, metal2_gt500, metal2_gt900, metal2_gt1500 ].each { |l| l.forget }

#   via2
# FreePDK Calibre deck incorrectly has this as 65nm so we are going to be compatible.
via2.edges.without_length(65.nm).output("VIA2.1", "VIA2.1 : Minimum/Maximum width of via2 : 65nm")
via2.space(85.nm, euclidian).output("VIA2.2", "VIA2.2 : Minimum spacing of via2 : 85nm")
via2.not(metal2).output("VIA2.3", "VIA2.3 : via2 must be inside metal2")
via2.not(metal3).output("VIA2.4", "VIA2.4 : via2 must be inside metal3")

#   metal3
metal3.width(70.nm, euclidian).output("METAL3.1", "METAL3.1 : Minimum width of  intermediate metal3 : 70nm")
metal3.space(70.nm, euclidian).output("METAL3.2", "METAL3.2 : Minimum spacing of  intermediate metal3 : 70nm")
via2_edges_with_less_enclosure = metal3.enclosing(via2, 35.nm, projection).second_edges
error_corners = via2_edges_with_less_enclosure.width(angle_limit(100.0), 1.dbu)
via2_edges_with_less_enclosure.forget
via2.interacting(error_corners.polygons(1.dbu)).output("METAL3.3", "METAL3.3 : Minimum enclosure around via2 on two opposite sides : 35nm")
error_corners.forget
via3_edges_with_less_enclosure = metal3.enclosing(via3, 35.nm, projection).second_edges
error_corners = via3_edges_with_less_enclosure.width(angle_limit(100.0), 1.dbu)
via3_edges_with_less_enclosure.forget
via3.interacting(error_corners.polygons(1.dbu)).output("METAL3.4", "METAL3.4 : Minimum enclosure around via3 on two opposite sides : 35nm")
error_corners.forget
metal3_gt90, metal3_gt270, metal3_gt500, metal3_gt900, metal3_gt1500 = classify_by_width(metal3, 90.nm, 270.nm, 500.nm, 900.nm, 1500.nm)
metal3_gt90.edges.with_length(300.nm,nil).space(90.nm,euclidian).output("METAL3.5", "METAL3.5 : Minimum spacing of  intermediate metal3 wider than 90 nm and longer than 300 nm : 90nm")
metal3_gt270.edges.with_length(900.nm,nil).space(270.nm,euclidian).output("METAL3.6", "METAL3.6 : Minimum spacing of  intermediate metal3 wider than 270 nm and longer than 900 nm : 270nm")
metal3_gt500.edges.with_length(1.8.um,nil).space(500.nm,euclidian).output("METAL3.7", "METAL3.7 : Minimum spacing of  intermediate metal3 wider than 500 nm and longer than 1.8 um : 500nm")
metal3_gt900.edges.with_length(2.7.um,nil).space(900.nm,euclidian).output("METAL3.8", "METAL3.8 : Minimum spacing of  intermediate metal3 wider than 900 nm and longer than 2.7 um : 900nm")
metal3_gt1500.edges.with_length(4.um,nil).space(1500.nm,euclidian).output("METAL3.9", "METAL3.9 : Minimum spacing of  intermediate metal3 wider than 1500 nm and longer than 4.0 um : 1500nm")
[ metal3_gt90, metal3_gt270, metal3_gt500, metal3_gt900, metal3_gt1500 ].each { |l| l.forget }

#   via3
via3.edges.without_length(70.nm).output("VIA3.1", "VIA3.1 : Minimum/Maximum width of via3 : 70nm")
via3.space(85.nm, euclidian).output("VIA3.2", "VIA3.2 : Minimum spacing of via3 : 85nm")
via3.not(metal3).output("VIA3.3", "VIA3.3 : via3 must be inside metal3")
via3.not(metal4).output("VIA3.4", "VIA3.4 : via3 must be inside metal4")

#   metal4
metal4.width(140.nm, euclidian).output("METAL4.1", "METAL4.1 : Minimum width of  semi-global metal4 : 140nm")
metal4.space(140.nm, euclidian).output("METAL4.2", "METAL4.2 : Minimum spacing of  semi-global metal4 : 140nm")
metal4_gt270, metal4_gt500, metal4_gt900 = classify_by_width(metal4, 270.nm, 500.nm, 900.nm)
metal4_gt270.edges.with_length(900.nm,nil).space(270.nm,euclidian).output("METAL4.6", "METAL4.6 : Minimum spacing of semi-global metal4 wider than 270 nm and longer than 900 nm : 270nm")
metal4_gt500.edges.with_length(1.8.um,nil).space(500.nm,euclidian).output("METAL4.7", "METAL4.7 : Minimum spacing of semi-global metal4 wider than 500 nm and longer than 1.8 um : 500nm")
metal4_gt900.edges.with_length(2.7.um,nil).space(900.nm,euclidian).output("METAL4.8", "METAL4.8 : Minimum spacing of semi-global meta4l wider than 900 nm and longer than 2.7 um : 900nm")
[ metal4_gt270, metal4_gt500, metal4_gt900 ].each { |l| l.forget }

#   via4
via4.edges.without_length(140.nm).output("VIA4.1", "VIA4.1 : Minimum/Maximum width of via4 : 140nm")
via4.space(160.nm, euclidian).output("VIA4.2", "VIA4.2 : Minimum spacing of via4 : 160nm")
via4.not(metal4).output("VIA4.3", "VIA4.3 : via4 must be inside metal4")
via4.not(metal5).output("VIA4.4", "VIA4.4 : via4 must be inside metal5")

#   metal5
metal5.width(140.nm, euclidian).output("METAL5.1", "METAL5.1 : Minimum width of semi-global metal5 : 140nm")
metal5.space(140.nm, euclidian).output("METAL5.2", "METAL5.2 : Minimum spacing of semi-global metal5 : 140nm")
metal5_gt270, metal5_gt500, metal5_gt900 = classify_by_width(metal5, 270.nm, 500.nm, 900.nm)
metal5_gt270.edges.with_length(900.nm,nil).space(270.nm,euclidian).output("METAL5.6", "METAL5.6 : Minimum spacing of semi-global metal5 wider than 270 nm and longer than 900 nm : 270nm")
metal5_gt500.edges.with_length(1.8.um,nil).space(500.nm,euclidian).output("METAL5.7", "METAL5.7 : Minimum spacing of semi-global metal5 wider than 500 nm and longer than 1.8 um : 500nm")
metal5_gt900.edges.with_length(2.7.um,nil).space(900.nm,euclidian).output("METAL5.8", "METAL5.8 : Minimum spacing of semi-global meta5l wider than 900 nm and longer than 2.7 um : 900nm")
[ metal5_gt270, metal5_gt500, metal5_gt900 ].each { |l| l.forget }

#   via5
via5.edges.without_length(140.nm).output("VIA5.1", "VIA5.1 : Minimum/Maximum width of via5 : 140nm")
via5.space(160.nm, euclidian).output("VIA5.2", "VIA5.2 : Minimum spacing of via5 : 160nm")
via5.not(metal5).output("VIA5.3", "VIA5.3 : via5 must be inside metal5")
via5.not(metal6).output("VIA5.4", "VIA5.4 : via5 must be inside metal6")

#   metal6
metal6.width(140.nm, euclidian).output("METAL6.1", "METAL6.1 : Minimum width of semi-global metal6 : 140nm")
metal6.space(140.nm, euclidian).output("METAL6.2", "METAL6.2 : Minimum spacing of semi-global metal6 : 140nm")
metal6_gt270, metal6_gt500, metal6_gt900 = classify_by_width(metal6, 270.nm, 500.nm, 900.nm)
metal6_gt270.edges.with_length(900.nm,nil).space(270.nm,euclidian).output("METAL6.6", "METAL6.6 : Minimum spacing of semi-global metal6 wider than 270 nm and longer than 900 nm : 270nm")
metal6_gt500.edges.with_length(1.8.um,nil).space(500.nm,euclidian).output("METAL6.7", "METAL6.7 : Minimum spacing of semi-global metal6 wider than 500 nm and longer than 1.8 um : 500nm")
metal6_gt900.edges.with_length(2.7.um,nil).space(900.nm,euclidian).output("METAL6.8", "METAL6.8 : Minimum spacing of semi-global metal6 wider than 900 nm and longer than 2.7 um : 900nm")
[ metal6_gt270, metal6_gt500, metal6_gt900 ].each { |l| l.forget }

#   via6
via6.edges.without_length(140.nm).output("VIA6.1", "VIA6.1 : Minimum/Maximum width of via6 : 140nm")
via6.space(160.nm, euclidian).output("VIA6.2", "VIA6.2 : Minimum spacing of via6 : 160nm")
via6.not(metal6).output("VIA6.3", "VIA6.3 : via6 must be inside metal6")
via6.not(metal7).output("VIA6.4", "VIA6.4 : via6 must be inside metal7")

#   metal7
metal7.width(400.nm, euclidian).output("METAL7.1", "METAL7.1 : Minimum width of thin global metal7 : 400nm")
metal7.space(400.nm, euclidian).output("METAL7.2", "METAL7.2 : Minimum spacing of thin global metal7 : 400nm")
metal7_gt500, metal7_gt900, metal7_gt1500 = classify_by_width(metal7, 500.nm, 900.nm, 1500.nm)
metal7_gt500.edges.with_length(1.8.um,nil).space(500.nm,euclidian).output("METAL7.7", "METAL7.7 : Minimum spacing of thin global metal7 wider than 500 nm and longer than 1.8 um : 500nm")
metal7_gt900.edges.with_length(2.7.um,nil).space(900.nm,euclidian).output("METAL7.8", "METAL7.8 : Minimum spacing of thin global metal7 wider than 900 nm and longer than 2.7 um : 900nm")
metal7_gt1500.edges.with_length(4.um,nil).space(1500.nm,euclidian).output("METAL7.9", "METAL7.9 : Minimum spacing of thin global meta7l wider than 1500 nm and longer than 4.0 um : 1500nm")
[ metal7_gt500, metal7_gt900, metal7_gt1500 ].each { |l| l.forget }

#   via7
via7.edges.without_length(400.nm).output("VIA6.1", "VIA6.1 : Minimum/Maximum width of via7 : 400nm")
via7.space(440.nm, euclidian).output("VIA6.2", "VIA6.2 : Minimum spacing of via7 : 440nm")
via7.not(metal7).output("VIA7.3", "VIA7.3 : via7 must be inside metal7")
via7.not(metal8).output("VIA7.4", "VIA7.4 : via7 must be inside metal8")

#   metal8
metal8.width(400.nm, euclidian).output("METAL8.1", "METAL8.1 : Minimum width of thin global metal8 : 400nm")
metal8.space(400.nm, euclidian).output("METAL8.2", "METAL8.2 : Minimum spacing of thin global metal8 : 400nm")
metal8_gt500, metal8_gt900, metal8_gt1500 = classify_by_width(metal8, 500.nm, 900.nm, 1500.nm)
metal8_gt500.edges.with_length(1.8.um,nil).space(500.nm,euclidian).output("METAL8.7", "METAL8.7 : Minimum spacing of thin global metal8 wider than 500 nm and longer than 1.8 um : 500nm")
metal8_gt900.edges.with_length(2.7.um,nil).space(900.nm,euclidian).output("METAL8.8", "METAL8.8 : Minimum spacing of thin global metal8 wider than 900 nm and longer than 2.7 um : 900nm")
metal8_gt1500.edges.with_length(4.um,nil).space(1500.nm,euclidian).output("METAL8.9", "METAL8.9 : Minimum spacing of thin global metal8 wider than 1500 nm and longer than 4.0 um : 1500nm")
[ metal8_gt500, metal8_gt900, metal8_gt1500 ].each { |l| l.forget }

#   via8
via8.edges.without_length(400.nm).output("VIA8.1", "VIA8.1 : Minimum/Maximum width of via8 : 400nm")
via8.space(440.nm, euclidian).output("VIA8.2", "VIA8.2 : Minimum spacing of via8 : 440nm")
via8.not(metal8).output("VIA8.3", "VIA8.3 : via8 must be inside metal8")
via8.not(metal9).output("VIA8.4", "VIA8.4 : via8 must be inside metal9")

#   metal9
metal9.width(800.nm, euclidian).output("METAL9.1", "METAL9.1 : Minimum width of global metal9 : 800nm")
metal9.space(800.nm, euclidian).output("METAL9.2", "METAL9.2 : Minimum spacing of global metal9 : 800nm")
metal9_gt500, metal9_gt900, metal9_gt1500 = classify_by_width(metal9, 500.nm, 900.nm, 1500.nm)
metal9_gt500.edges.with_length(1.8.um,nil).space(500.nm,euclidian).output("METAL9.7", "METAL9.7 : Minimum spacing of global metal9 wider than 500 nm and longer than 1.8 um : 500nm")
metal9_gt900.edges.with_length(2.7.um,nil).space(900.nm,euclidian).output("METAL9.8", "METAL9.8 : Minimum spacing of global metal9 wider than 900 nm and longer than 2.7 um : 900nm")
metal9_gt1500.edges.with_length(4.um,nil).space(1500.nm,euclidian).output("METAL9.9", "METAL9.9 : Minimum spacing of global metal9 wider than 1500 nm and longer than 4.0 um : 1500nm")
[ metal9_gt500, metal9_gt900, metal9_gt1500 ].each { |l| l.forget }

#   via9
via9.edges.without_length(800.nm).output("VIA9.1", "VIA9.1 : Minimum/Maximum width of via9 : 800nm")
via9.space(880.nm, euclidian).output("VIA9.2", "VIA9.2 : Minimum spacing of via9 : 880nm")
via9.not(metal9).output("VIA9.3", "VIA9.3 : via9 must be inside metal9")
via9.not(metal10).output("VIA9.4", "VIA9.4 : via9 must be inside metal10")

#   metal10
metal10.width(800.nm, euclidian).output("METAL10.1", "METAL10.1 : Minimum width of global metal10 : 800nm")
metal10.space(800.nm, euclidian).output("METAL10.2", "METAL10.2 : Minimum spacing of global metal10 : 800nm")
metal10_gt500, metal10_gt900, metal10_gt1500 = classify_by_width(metal10, 500.nm, 900.nm, 1500.nm)
metal10_gt500.edges.with_length(1.8.um,nil).space(500.nm,euclidian).output("METAL10.7", "METAL10.7 : Minimum spacing of global metal10 wider than 500 nm and longer than 1.8 um : 500nm")
metal10_gt900.edges.with_length(2.7.um,nil).space(900.nm,euclidian).output("METAL10.8", "METAL10.8 : Minimum spacing of global metal10 wider than 900 nm and longer than 2.7 um : 900nm")
metal10_gt1500.edges.with_length(4.um,nil).space(1500.nm,euclidian).output("METAL10.9", "METAL10.9 : Minimum spacing of global metal10 wider than 1500 nm and longer than 4.0 um : 1500nm")
[ metal10_gt500, metal10_gt900, metal10_gt1500 ].each { |l| l.forget }

end


#   ONGRID  also defined in :
#   https://www.eda.ncsu.edu/wiki/FreePDK45:Manufacturing_Grid
###########################################
if OFFGRID
info("GRID section")

grid = 2.5.nm
all_drawing = [ :well, :active, :vtg, :vth, :pplus, :nplus, :poly, :thkox, :cont, :metal1, :via1, :metal2, :via2, :metal3, :via3, :metal4, :via4, :metal5, :via5, :metal6, :via6, :metal7, :via7, :metal8, :via8, :metal9, :via9, :metal10 ]
all_drawing.each do |dwg|
  # a Ruby idiom to get the value of a variable whose name is in "dwg" (as symbol)
  layer = binding.local_variable_get(dwg)
  r_grid = layer.ongrid(grid).polygons(10.nm)
  r_grid.output("GRID: vertexes on layer #{dwg} not on grid of #{'%.12g' % grid}")
end
end

#   ANTENNA checks
################
if ANTENNA
info("ANTENNA section")

diode = nplus &amp; active - nwell # diode recognition layer

# build connction of poly+gate to metal1
connect(gate, poly)
connect(poly, cont)
connect(diode, cont)
connect(cont, metal1)

antenna_check(gate, metal1, 300.0, diode).output("METAL1_ANTENNA", "METAL1_ANTENNA : Ratio of Maximum Allowed (Field poly area or Metal Layer Area) to transistor gate area : 300:1")

# build connction of poly+gate to metal2
connect(metal1, via1)
connect(via1, metal2)

antenna_check(gate, metal2, 300.0, diode).output("METAL2_ANTENNA", "METAL2_ANTENNA : Ratio of Maximum Allowed (Field poly area or Metal Layer Area) to transistor gate area : 300:1")

# build connction of poly+gate to metal3
connect(metal2, via2)
connect(via2, metal3)

antenna_check(gate, metal3, 300.0, diode).output("METAL3_ANTENNA", "METAL3_ANTENNA : Ratio of Maximum Allowed (Field poly area or Metal Layer Area) to transistor gate area : 300:1")

# build connction of poly+gate to metal4
connect(metal3, via3)
connect(via3, metal4)

antenna_check(gate, metal4, 300.0, diode).output("METAL4_ANTENNA", "METAL4_ANTENNA : Ratio of Maximum Allowed (Field poly area or Metal Layer Area) to transistor gate area : 300:1")

# build connction of poly+gate to metal5
connect(metal4, via4)
connect(via4, metal5)

antenna_check(gate, metal5, 300.0, diode).output("METAL5_ANTENNA", "METAL5_ANTENNA : Ratio of Maximum Allowed (Field poly area or Metal Layer Area) to transistor gate area : 300:1")

# build connction of poly+gate to metal6
connect(metal5, via5)
connect(via5, metal6)

antenna_check(gate, metal6, 300.0, diode).output("METAL6_ANTENNA", "METAL6_ANTENNA : Ratio of Maximum Allowed (Field poly area or Metal Layer Area) to transistor gate area : 300:1")

# build connction of poly+gate to metal7
connect(metal6, via6)
connect(via6, metal7)

antenna_check(gate, metal7, 300.0, diode).output("METAL7_ANTENNA", "METAL7_ANTENNA : Ratio of Maximum Allowed (Field poly area or Metal Layer Area) to transistor gate area : 300:1")

# build connction of poly+gate to metal8
connect(metal7, via7)
connect(via7, metal8)

antenna_check(gate, metal8, 300.0, diode).output("METAL8_ANTENNA", "METAL8_ANTENNA : Ratio of Maximum Allowed (Field poly area or Metal Layer Area) to transistor gate area : 300:1")

# build connction of poly+gate to metal9
connect(metal8, via8)
connect(via8, metal9)

antenna_check(gate, metal9, 300.0, diode).output("METAL9_ANTENNA", "METAL9_ANTENNA : Ratio of Maximum Allowed (Field poly area or Metal Layer Area) to transistor gate area : 300:1")

# build connction of poly+gate to metal10
connect(metal9, via9)
connect(via9, metal10)

antenna_check(gate, metal10, 300.0, diode).output("METAL10_ANTENNA", "METAL10_ANTENNA : Ratio of Maximum Allowed (Field poly area or Metal Layer Area) to transistor gate area : 300:1")

end

# time spent for the DRC
time = Time.now
hours = ((time - tstart)/3600).to_i
minutes = ((time - tstart)/60 - hours * 60).to_i
seconds = ((time - tstart) - (minutes * 60 + hours * 3600)).to_i
$stdout.write "DRC finished at : #{time.hour}:#{time.min}:#{time.sec}  -  DRC duration =  #{hours} hrs. #{minutes} min. #{seconds} sec.\n"
</text>
</klayout-macro>