Fix 6T and replica cell contact spacing issues with Magic DRC.

DRC/LVS passing for all parameterized gates.
Magic and GDS match for SCMOS rules again.

compiler/bitcell_array.py

@@ -115,8 +115,8 @@ class bitcell_array(design.design):
             gnd_pins = self.cell_inst[0,col].get_pins("gnd")
             for gnd_pin in gnd_pins:
                 # avoid duplicates by only doing even rows
-                # also skip if it is not the full height (a through rail)
+                # also skip if it isn't the pin that spans the entire cell down to the bottom
-                if gnd_pin.layer=="metal2" and col%2 == 0 and gnd_pin.height()>=self.cell.height:
+                if gnd_pin.layer=="metal2" and col%2 == 0 and gnd_pin.by()==lower_y:
                     self.add_layout_pin(text="gnd", 
                                         layer="metal2",
                                         offset=gnd_pin.ll(),

compiler/design.py

@@ -27,8 +27,13 @@ class design(hierarchy_spice.spice, hierarchy_layout.layout):
         
         # Check if the name already exists, if so, give an error
         # because each reference must be a unique name.
-        ok_list = ['ms_flop.ms_flop', 'bitcell.bitcell', 'contact.contact',
+        # These modules ensure unique names or have no changes if they
-                   'ptx.ptx', 'sram.sram',
+        # aren't unique
+        ok_list = ['ms_flop.ms_flop',
+                   'bitcell.bitcell',
+                   'contact.contact',
+                   'ptx.ptx',
+                   'sram.sram',
                    'hierarchical_predecode2x4.hierarchical_predecode2x4',
                    'hierarchical_predecode3x8.hierarchical_predecode3x8']
         if name not in design.name_map:
@@ -41,6 +46,7 @@ class design(hierarchy_spice.spice, hierarchy_layout.layout):
     def setup_drc_constants(self):
         """ These are some DRC constants used in many places in the compiler."""
         from tech import drc
+        self.well_width = drc["minwidth_well"]
         self.poly_width = drc["minwidth_poly"]
         self.poly_space = drc["poly_to_poly"]        
         self.m1_width = drc["minwidth_metal1"]
@@ -49,6 +55,15 @@ class design(hierarchy_spice.spice, hierarchy_layout.layout):
         self.m2_space = drc["metal2_to_metal2"]        
         self.m3_width = drc["minwidth_metal3"]
         self.m3_space = drc["metal3_to_metal3"]
+        self.active_width = drc["minwidth_active"]
+        self.contact_width = drc["minwidth_contact"]
+        
+        self.poly_to_active = drc["poly_to_active"]
+        self.poly_extend_active = drc["poly_extend_active"]
+        self.contact_to_gate = drc["contact_to_gate"]
+        self.well_enclose_active = drc["well_enclosure_active"]
+        self.implant_enclose_active = drc["implant_enclosure_active"]
+        self.implant_space = drc["implant_to_implant"]   
         
     def get_layout_pins(self,inst):
         """ Return a map of pin locations of the instance offset """

compiler/hierarchy_layout.py

@@ -336,14 +336,14 @@ class layout(lef.lef):
                               implant_type=implant_type,
                               well_type=well_type)
         self.add_mod(via)
-        self.add_inst(name=via.name, 
+        inst=self.add_inst(name=via.name, 
                            mod=via, 
                            offset=offset,
                            mirror=mirror,
                            rotate=rotate)
         # We don't model the logical connectivity of wires/paths
         self.connect_inst([])
-        return via
+        return inst
 
     def add_via_center(self, layers, offset, size=[1,1], mirror="R0", rotate=0, implant_type=None, well_type=None):
         """ Add a three layer via structure by the center coordinate accounting for mirroring and rotation. """
@@ -371,14 +371,14 @@ class layout(lef.lef):
             
 
         self.add_mod(via)
-        self.add_inst(name=via.name, 
+        inst=self.add_inst(name=via.name, 
                            mod=via, 
                            offset=corrected_offset,
                            mirror=mirror,
                            rotate=rotate)
         # We don't model the logical connectivity of wires/paths
         self.connect_inst([])
-        return via
+        return inst
     
     def add_ptx(self, offset, mirror="R0", rotate=0, width=1, mults=1, tx_type="nmos"):
         """Adds a ptx module to the design."""
@@ -387,12 +387,12 @@ class layout(lef.lef):
                       mults=mults,
                       tx_type=tx_type)
         self.add_mod(mos)
-        self.add_inst(name=mos.name, 
+        inst=self.add_inst(name=mos.name, 
                            mod=mos, 
                            offset=offset,
                            mirror=mirror,
                            rotate=rotate)
-        return mos
+        return inst
 
 
 

compiler/pgate.py

@@ -47,7 +47,7 @@ class pgate(design.design):
         debug.check(nmos_gate_pin.ll().x==pmos_gate_pin.ll().x, "Connecting unaligned gates not supported.")
         
         # Pick point on the left of NMOS and connect down to PMOS
-        nmos_gate_pos = nmos_gate_pin.ll() + vector(0.5*drc["minwidth_poly"],0)
+        nmos_gate_pos = nmos_gate_pin.ll() + vector(0.5*self.poly_width,0)
         pmos_gate_pos = vector(nmos_gate_pos.x,pmos_gate_pin.bc().y)
         self.add_path("poly",[nmos_gate_pos,pmos_gate_pos])
 
@@ -98,9 +98,9 @@ class pgate(design.design):
         """ Extend the n/p wells to cover whole cell """
 
         # Add a rail width to extend the well to the top of the rail
-        self.max_y_offset = self.height + 0.5*drc["minwidth_metal1"]
+        max_y_offset = self.height + 0.5*self.m1_width
         self.nwell_position = middle_position
-        nwell_height = self.max_y_offset - middle_position.y
+        nwell_height = max_y_offset - middle_position.y
         if info["has_nwell"]:
             self.add_rect(layer="nwell",
                           offset=middle_position,
@@ -111,15 +111,15 @@ class pgate(design.design):
                       width=self.well_width,
                       height=nwell_height)
 
-        self.pwell_position = vector(0,-0.5*drc["minwidth_metal1"])
+        pwell_position = vector(0,-0.5*self.m1_width)
-        pwell_height = middle_position.y-self.pwell_position.y
+        pwell_height = middle_position.y-pwell_position.y
         if info["has_pwell"]:
             self.add_rect(layer="pwell",
-                          offset=self.pwell_position,
+                          offset=pwell_position,
                           width=self.well_width,
                           height=pwell_height)
         self.add_rect(layer="vtg",
-                      offset=self.pwell_position,
+                      offset=pwell_position,
                       width=self.well_width,
                       height=pwell_height)
 
@@ -132,8 +132,9 @@ class pgate(design.design):
         contact_xoffset = pmos_pos.x + pmos.active_width + drc["active_to_body_active"]
         # Must be at least an well enclosure of active down from the top of the well
         # OR align the active with the top of PMOS active.
+        max_y_offset = self.height + 0.5*self.m1_width
         contact_yoffset = min(pmos_pos.y + pmos.active_height - pmos.active_contact.first_layer_height,
-                              self.max_y_offset - pmos.active_contact.first_layer_height/2 - drc["well_enclosure_active"])
+                              max_y_offset - pmos.active_contact.first_layer_height/2 - self.well_enclose_active)
         contact_offset = vector(contact_xoffset, contact_yoffset)
         # Offset by half a contact in x and y
         contact_offset += vector(0.5*pmos.active_contact.first_layer_width,
@@ -144,11 +145,11 @@ class pgate(design.design):
                                                    well_type="n")
         self.add_rect_center(layer="metal1",
                              offset=contact_offset + vector(0,0.5*(self.height-contact_offset.y)),
-                             width=self.nwell_contact.second_layer_width,
+                             width=self.nwell_contact.mod.second_layer_width,
                              height=self.height - contact_offset.y)
         
         # Now add the full active and implant for the PMOS
-        active_offset = pmos_pos + vector(pmos.active_width,0)
+        #active_offset = pmos_pos + vector(pmos.active_width,0)
         # This might be needed if the spacing between the actives is not satisifed
         # self.add_rect(layer="active",
         #               offset=active_offset,
@@ -156,27 +157,29 @@ class pgate(design.design):
         #               height=pmos.active_height)
 
         # we need to ensure implants don't overlap and are spaced far enough apart
-        implant_spacing = drc["implant_to_implant"]+drc["implant_enclosure_active"]
+        # implant_spacing = self.implant_space+self.implant_enclose_active
-        implant_offset = active_offset + vector(implant_spacing,0) - vector(0,drc["implant_enclosure_active"])
+        # implant_offset = active_offset + vector(implant_spacing,0) - vector(0,self.implant_enclose_active)
-        implant_width = pmos.active_contact.width + 2*drc["implant_enclosure_active"]
+        # implant_width = pmos.active_contact.width + 2*self.implant_enclose_active
-        implant_height = pmos.active_height + 2*drc["implant_enclosure_active"]
+        # implant_height = pmos.active_height + 2*self.implant_enclose_active
         # self.add_rect(layer="nimplant",
         #               offset=implant_offset,
         #               width=implant_width,
         #               height=implant_height)
 
+        # Return the top of the well
 
     def add_pwell_contact(self, nmos, nmos_pos):
         """ Add an pwell contact next to the given nmos device. """
 
         layer_stack = ("active", "contact", "metal1")
 
+        pwell_position = vector(0,-0.5*self.m1_width)
         
         # To the right a spacing away from the nmos right active edge
         contact_xoffset = nmos_pos.x + nmos.active_width + drc["active_to_body_active"]
         # Must be at least an well enclosure of active up from the bottom of the well
         contact_yoffset = max(nmos_pos.y,
-                              drc["well_enclosure_active"] - nmos.active_contact.first_layer_height/2 - self.pwell_position.y)
+                              self.well_enclose_active - nmos.active_contact.first_layer_height/2)
         contact_offset = vector(contact_xoffset, contact_yoffset)
 
         # Offset by half a contact
@@ -188,21 +191,21 @@ class pgate(design.design):
                                                    well_type="p")
         self.add_rect_center(layer="metal1",
                              offset=contact_offset.scale(1,0.5),
-                             width=self.pwell_contact.second_layer_width,
+                             width=self.pwell_contact.mod.second_layer_width,
                              height=contact_offset.y)
         
         # Now add the full active and implant for the NMOS
-        active_offset = nmos_pos + vector(nmos.active_width,0)        
+        # active_offset = nmos_pos + vector(nmos.active_width,0)        
         # This might be needed if the spacing between the actives is not satisifed
         # self.add_rect(layer="active",
         #               offset=active_offset,
         #               width=nmos.active_contact.width,
         #               height=nmos.active_height)
 
-        implant_spacing = drc["implant_to_implant"]+drc["implant_enclosure_active"]
+        # implant_spacing = self.implant_space+self.implant_enclose_active
-        implant_offset = active_offset + vector(implant_spacing,0) - vector(0,drc["implant_enclosure_active"])
+        # implant_offset = active_offset + vector(implant_spacing,0) - vector(0,self.implant_enclose_active)
-        implant_width = nmos.active_contact.width + 2*drc["implant_enclosure_active"]
+        # implant_width = nmos.active_contact.width + 2*self.implant_enclose_active
-        implant_height = nmos.active_height + 2*drc["implant_enclosure_active"]
+        # implant_height = nmos.active_height + 2*self.implant_enclose_active
         # self.add_rect(layer="pimplant",
         #               offset=implant_offset,
         #               width=implant_width,

compiler/pinv.py

@@ -57,8 +57,8 @@ class pinv(pgate.pgate):
         self.setup_layout_constants()
         self.add_supply_rails()
         self.add_ptx()
-        self.extend_wells(self.well_pos)
         self.add_well_contacts()
+        self.extend_wells(self.well_pos)
         self.connect_rails()
         self.route_input_gate(self.pmos_inst, self.nmos_inst, self.output_pos.y, "A", rotate=0)
         self.route_outputs()
@@ -128,9 +128,6 @@ class pinv(pgate.pgate):
         self.width = self.well_width
         # Height is an input parameter, so it is not recomputed. 
         
-        # This will help with the wells 
-        self.well_pos = vector(0,0.4*self.height)
-        
 
         
     def create_ptx(self):
@@ -183,8 +180,13 @@ class pinv(pgate.pgate):
         self.connect_inst(["Z", "A", "gnd", "gnd"])
 
 
-        # Output position will be in between the PMOS and NMOS        
+        # Output position will be in between the PMOS and NMOS drains
-        self.output_pos = vector(0,0.5*(self.pmos_pos.y+self.nmos_pos.y+self.nmos.active_height))
+        pmos_drain_pos = self.pmos_inst.get_pin("D").ll()
+        nmos_drain_pos = self.nmos_inst.get_pin("D").ul()
+        self.output_pos = vector(0,0.5*(pmos_drain_pos.y+nmos_drain_pos.y))
+
+        # This will help with the wells 
+        self.well_pos = vector(0,self.nmos_inst.uy())
         
 
 
@@ -196,7 +198,7 @@ class pinv(pgate.pgate):
         pmos_drain_pin = self.pmos_inst.get_pin("D")
 
         # Pick point at right most of NMOS and connect down to PMOS
-        nmos_drain_pos = nmos_drain_pin.ur() - vector(0.5*self.m1_width,0)
+        nmos_drain_pos = nmos_drain_pin.lr() - vector(0.5*self.m1_width,0)
         pmos_drain_pos = vector(nmos_drain_pos.x, pmos_drain_pin.bc().y)
         self.add_path("metal1",[nmos_drain_pos,pmos_drain_pos])
 

compiler/pnand2.py

@@ -51,8 +51,8 @@ class pnand2(pgate.pgate):
         self.add_supply_rails()
         self.add_ptx()
         self.connect_rails()
-        self.extend_wells(self.well_pos)
         self.add_well_contacts()
+        self.extend_wells(self.well_pos)
         self.route_inputs()
         self.route_output()
 
@@ -94,9 +94,6 @@ class pnand2(pgate.pgate):
         self.width = self.well_width
         # Height is an input parameter, so it is not recomputed.
 
-        # This will help with the wells 
-        self.well_pos = vector(0,0.4*self.height)
-
         # This is the extra space needed to ensure DRC rules to the active contacts
         extra_contact_space = max(-self.nmos.get_pin("D").by(),0)
         # This is a poly-to-poly of a flipped cell
@@ -150,6 +147,9 @@ class pnand2(pgate.pgate):
         # Output position will be in between the PMOS and NMOS        
         self.output_pos = vector(0,0.5*(pmos1_pos.y+nmos1_pos.y+self.nmos.active_height))
 
+        # This will help with the wells 
+        self.well_pos = vector(0,self.nmos1_inst.uy())
+        
     def add_well_contacts(self):
         """ Add n/p well taps to the layout and connect to supplies AFTER the wells are created """
 

compiler/pnand3.py

@@ -51,8 +51,8 @@ class pnand3(pgate.pgate):
         self.add_supply_rails()
         self.add_ptx()
         self.connect_rails()
-        self.extend_wells(self.well_pos)
         self.add_well_contacts()
+        self.extend_wells(self.well_pos)
         self.route_inputs()
         self.route_output()
 
@@ -88,7 +88,6 @@ class pnand3(pgate.pgate):
 
         # This will help with the wells and the input/output placement
         self.output_pos = vector(0,0.5*self.height)
-        self.well_pos = vector(0,0.4*self.height)
 
         # This is a poly-to-poly of a flipped cell
         # This is extra liberal for pnand3 because we know there are big transistor sizes
@@ -153,6 +152,8 @@ class pnand3(pgate.pgate):
                                       offset=self.nmos3_pos)
         self.connect_inst(["net2", "C", "gnd", "gnd"])
         
+        # This should be placed at the top of the NMOS well
+        self.well_pos = vector(0,self.nmos1_inst.uy())
         
     def add_well_contacts(self):
         """ Add n/p well taps to the layout and connect to supplies """

compiler/pnor2.py

@@ -52,8 +52,8 @@ class pnor2(pgate.pgate):
         self.add_supply_rails()
         self.add_ptx()
         self.connect_rails()
-        self.extend_wells(self.well_pos)
         self.add_well_contacts()
+        self.extend_wells(self.well_pos)
         self.route_inputs()
         self.route_output()
 
@@ -98,9 +98,6 @@ class pnor2(pgate.pgate):
         self.width = self.well_width
         # Height is an input parameter, so it is not recomputed.
 
-        # This will help with the wells 
-        self.well_pos = vector(0,0.4*self.height)
-
         # This is the extra space needed to ensure DRC rules to the active contacts
         extra_contact_space = max(-self.nmos.get_pin("D").by(),0)
         # This is a poly-to-poly of a flipped cell
@@ -154,6 +151,9 @@ class pnor2(pgate.pgate):
         # Output position will be in between the PMOS and NMOS        
         self.output_pos = vector(0,0.5*(pmos1_pos.y+nmos1_pos.y+self.nmos.active_height))
 
+        # This will help with the wells 
+        self.well_pos = vector(0,self.nmos1_inst.uy())
+        
     def add_well_contacts(self):
         """ Add n/p well taps to the layout and connect to supplies """
 

compiler/ptx.py

@@ -94,25 +94,19 @@ class ptx(design.design):
         self.active_contact = contact(layer_stack=("active", "contact", "metal1"),
                                       dimensions=(1, self.num_contacts))
 
-        # Standard DRC rules
-        self.min_active_width = drc["minwidth_active"]
-        self.contact_width = drc["minwidth_contact"]
-        self.poly_width = drc["minwidth_poly"]
-        self.poly_to_active = drc["poly_to_active"]
-        self.poly_extend_active = drc["poly_extend_active"]
         
         # The contacted poly pitch (or uncontacted in an odd technology)
-        self.poly_pitch = max(2*drc["contact_to_gate"] + self.contact_width + self.poly_width,
+        self.poly_pitch = max(2*self.contact_to_gate + self.contact_width + self.poly_width,
-                              drc["poly_to_poly"])
+                              self.poly_space)
 
         # The contacted poly pitch (or uncontacted in an odd technology)
-        self.contact_pitch = 2*drc["contact_to_gate"] + self.contact_width + self.poly_width
+        self.contact_pitch = 2*self.contact_to_gate + self.contact_width + self.poly_width
         
         # The enclosure of an active contact. Not sure about second term.
         active_enclose_contact = max(drc["active_enclosure_contact"],
-                                     (self.min_active_width - self.contact_width)/2)
+                                     (self.active_width - self.contact_width)/2)
         # This is the distance from the edge of poly to the contacted end of active
-        self.end_to_poly = active_enclose_contact + self.contact_width + drc["contact_to_gate"]
+        self.end_to_poly = active_enclose_contact + self.contact_width + self.contact_to_gate
         
 
         # Active width is determined by enclosure on both ends and contacted pitch,
@@ -125,22 +119,25 @@ class ptx(design.design):
         # Poly height must include poly extension over active
         self.poly_height = self.tx_width + 2*self.poly_extend_active
 
+        # The active offset is due to the well extension
+        self.active_offset = vector([self.well_enclose_active]*2)
+
         # Well enclosure of active, ensure minwidth as well
         if info["has_{}well".format(self.well_type)]:
-            self.well_width = max(self.active_width + 2*drc["well_enclosure_active"],
+            self.cell_well_width = max(self.active_width + 2*self.well_enclose_active,
-                                  drc["minwidth_well"])
+                                  self.well_width)
-            self.well_height = max(self.tx_width + 2*drc["well_enclosure_active"],
+            self.cell_well_height = max(self.tx_width + 2*self.well_enclose_active,
-                                   drc["minwidth_well"])
+                                   self.well_width)
-
+            # We are going to shift the 0,0, so include that in the width and height
-            self.height = self.well_height
+            self.height = self.cell_well_height - self.active_offset.y
-            self.width = self.well_width
+            self.width = self.cell_well_width - self.active_offset.x
         else:
             # If no well, use the boundary of the active and poly
             self.height = self.poly_height
             self.width = self.active_width
         
         # The active offset is due to the well extension
-        self.active_offset = vector([drc["well_enclosure_active"]]*2)
+        self.active_offset = vector([self.well_enclose_active]*2)
 
         # This is the center of the first active contact offset (centered vertically)
         self.contact_offset = self.active_offset + vector(active_enclose_contact + 0.5*self.contact_width,
@@ -189,9 +186,9 @@ class ptx(design.design):
         # This is the distance that we must route up or down from the center
         # of the contacts to avoid DRC violations to the other contacts
         pin_offset = vector(0, 0.5*self.active_contact.second_layer_height \
-                            + drc["metal1_to_metal1"] + 0.5*drc["minwidth_metal1"])
+                            + self.m1_space + 0.5*self.m1_width)
-        # This is the width of a contact to extend the ends of the pin
+        # This is the width of a m1 extend the ends of the pin
-        end_offset = vector(self.active_contact.second_layer_width/2,0)
+        end_offset = vector(self.m1_width/2,0)
 
         # drains always go to the MIDDLE of the cell, so top of NMOS, bottom of PMOS
         # so reverse the directions for NMOS compared to PMOS.
@@ -280,12 +277,12 @@ class ptx(design.design):
         if info["has_{}well".format(self.well_type)]:
             self.add_rect(layer="{}well".format(self.well_type),
                           offset=(0,0),
-                          width=self.well_width,
+                          width=self.cell_well_width,
-                          height=self.well_height)
+                          height=self.cell_well_height)
             self.add_rect(layer="vtg",
                           offset=(0,0),
-                          width=self.well_width,
+                          width=self.cell_well_width,
-                          height=self.well_height)
+                          height=self.cell_well_height)
 
 
     def calculate_num_contacts(self):
@@ -331,8 +328,8 @@ class ptx(design.design):
             self.add_layout_pin_center_rect(text="S",
                                             layer="metal1",
                                             offset=pos,
-                                            width=contact.second_layer_width,
+                                            width=contact.mod.second_layer_width,
-                                            height=contact.second_layer_height)
+                                            height=contact.mod.second_layer_height)
 
                 
         for pos in drain_positions:
@@ -344,8 +341,8 @@ class ptx(design.design):
             self.add_layout_pin_center_rect(text="D",
                                             layer="metal1",
                                             offset=pos,
-                                            width=contact.second_layer_width,
+                                            width=contact.mod.second_layer_width,
-                                            height=contact.second_layer_height)
+                                            height=contact.mod.second_layer_height)
                 
         if self.connect_active:
             self.connect_fingered_active(drain_positions, source_positions)

compiler/verify/magic.py

@@ -12,12 +12,13 @@ ln -s 2001a current
 #!/bin/sh
 magic -dnull -noconsole << EOF
 tech load SCN3ME_SUBM.30
-gds rescale false
+scalegrid 1 2
+gds rescale no
 gds polygon subcell true
 gds warning default
 gds read $1
 load $1
-save $1
+writeall force
 drc count
 drc why
 quit -noprompt
@@ -29,7 +30,8 @@ rm -f $1.ext
 rm -f $1.spice
 magic -dnull -noconsole << EOF
 tech load SCN3ME_SUBM.30
-gds rescale false
+scalegrid 1 2
+gds rescale no
 gds polygon subcell true
 gds warning default
 gds read $1
@@ -72,12 +74,13 @@ def write_magic_script(cell_name, gds_name, extract=False):
     f.write("#!/bin/sh\n")
     f.write("{} -dnull -noconsole << EOF\n".format(OPTS.drc_exe[1]))
     f.write("tech load SCN3ME_SUBM.30\n")
-    f.write("gds rescale false\n")
+    f.write("scalegrid 1 2\n")
+    f.write("gds rescale no\n")
     f.write("gds polygon subcell true\n")
     f.write("gds warning default\n")
     f.write("gds read {}\n".format(gds_name))
     f.write("load {}\n".format(cell_name))
-    f.write("save {}\n".format(cell_name))    
+    f.write("writeall force\n")    
     f.write("drc check\n")
     f.write("drc catchup\n")
     f.write("drc count total\n")
@@ -123,6 +126,12 @@ def write_netgen_script(cell_name, sp_name):
                                                                          cell_name))
     f.write("property {{{0}{1}.spice pfet}} remove as ad ps pd\n".format(OPTS.openram_temp,
                                                                          cell_name))
+    # Allow some flexibility in W size because magic will snap to a lambda grid
+    # This can also cause disconnects unfortunately!
+    # f.write("property {{{0}{1}.spice nfet}} tolerance {{w 0.1}}\n".format(OPTS.openram_temp,
+    #                                                                     cell_name))
+    # f.write("property {{{0}{1}.spice pfet}} tolerance {{w 0.1}}\n".format(OPTS.openram_temp,
+    #                                                                     cell_name))
     f.write("permute default\n")
     f.write("log start\n")    
     f.write("compare hierarchical {0}{1}.spice {{{2} {1}}}\n".format(OPTS.openram_temp,

compiler/wordline_driver.py

@@ -149,7 +149,7 @@ class wordline_driver(design.design):
             self.add_segment_center(layer="metal1",
                                     start=clk_offset,
                                     end=a_pos)
-            m1m2_via = self.add_via_center(layers=("metal1", "via1", "metal2"),
+            self.add_via_center(layers=("metal1", "via1", "metal2"),
                                 offset=clk_offset)
 
             # first inv to nand2 A

technology/scn3me_subm/mag_lib/cell_6t.mag

@@ -1,119 +1,114 @@
 magic
 tech scmos
-timestamp 1516665972
+timestamp 1516839303
 << nwell >>
-rect -5 31 42 52
+rect -8 29 42 50
 << pwell >>
-rect -5 -6 42 31
+rect -8 -8 42 29
 << ntransistor >>
-rect 7 12 9 20
+rect 7 10 9 18
-rect 29 12 31 20
+rect 29 10 31 18
-rect 10 5 14 7
+rect 10 3 14 5
-rect 24 5 28 7
+rect 24 3 28 5
 << ptransistor >>
-rect 7 39 11 42
+rect 7 37 11 40
-rect 27 39 31 42
+rect 27 37 31 40
 << ndiffusion >>
-rect 2 20 6 23
+rect -2 16 7 18
-rect 32 20 36 23
-rect 6 16 7 20
 rect 2 12 7 16
-rect 9 16 10 20
+rect -2 10 7 12
-rect 9 12 14 16
+rect 9 14 10 18
-rect 28 16 29 20
+rect 9 10 14 14
-rect 24 12 29 16
+rect 28 14 29 18
-rect 31 16 32 20
+rect 24 10 29 14
-rect 31 12 36 16
+rect 31 16 36 18
-rect 10 7 14 12
+rect 31 12 32 16
-rect 24 7 28 12
+rect 31 10 36 12
-rect 10 4 14 5
+rect 10 5 14 10
-rect 24 4 28 5
+rect 24 5 28 10
+rect 10 2 14 3
+rect 24 2 28 3
 << pdiffusion >>
-rect 2 42 6 45
+rect 32 40 36 43
-rect 32 42 36 45
+rect 2 37 7 40
-rect 6 39 7 42
+rect 11 37 12 40
-rect 11 39 12 42
+rect 26 37 27 40
-rect 26 39 27 42
+rect 31 37 32 40
-rect 31 39 32 42
 << ndcontact >>
-rect 2 16 6 20
+rect -2 12 2 16
-rect 10 16 14 20
+rect 10 14 14 18
-rect 24 16 28 20
+rect 24 14 28 18
-rect 32 16 36 20
+rect 32 12 36 16
-rect 10 0 14 4
+rect 10 -2 14 2
-rect 24 0 28 4
+rect 24 -2 28 2
 << pdcontact >>
-rect 2 38 6 42
+rect -2 36 2 40
-rect 12 38 16 42
+rect 12 36 16 40
-rect 22 38 26 42
+rect 22 36 26 40
-rect 32 38 36 42
+rect 32 36 36 40
 << psubstratepcontact >>
-rect 2 23 6 27
+rect 32 22 36 26
-rect 32 23 36 27
 << nsubstratencontact >>
-rect 0 45 6 49
+rect 32 43 36 47
-rect 32 45 36 49
 << polysilicon >>
-rect 7 42 11 44
+rect 7 40 11 42
-rect 27 42 31 44
+rect 27 40 31 42
-rect 7 37 11 39
+rect 7 35 11 37
-rect 7 23 9 37
+rect 7 21 9 35
-rect 27 36 31 39
+rect 27 34 31 37
-rect 15 35 31 36
+rect 15 33 31 34
-rect 19 34 31 35
+rect 19 32 31 33
-rect 7 22 21 23
+rect 7 20 21 21
-rect 7 21 24 22
+rect 7 19 24 20
-rect 7 20 9 21
+rect 7 18 9 19
-rect 29 20 31 34
+rect 29 18 31 32
-rect 7 10 9 12
+rect 7 8 9 10
-rect 17 7 21 8
+rect 17 5 21 6
-rect 29 10 31 12
+rect 29 8 31 10
-rect 0 5 10 7
+rect -2 3 10 5
-rect 14 5 24 7
+rect 14 3 24 5
-rect 28 5 36 7
+rect 28 3 36 5
 << polycontact >>
-rect 15 31 19 35
+rect 15 29 19 33
-rect 21 22 25 26
+rect 21 20 25 24
-rect 17 8 21 12
+rect 17 6 21 10
 << metal1 >>
-rect 6 45 32 49
+rect -2 43 32 47
-rect 2 42 6 45
+rect -2 40 2 43
-rect 32 42 36 45
+rect 32 40 36 43
-rect 2 27 6 31
+rect -2 16 2 29
-rect 2 20 6 23
+rect 11 18 15 36
-rect 11 20 15 38
+rect 23 24 27 36
-rect 23 26 27 38
+rect 25 20 27 24
-rect 25 22 27 26
+rect 23 18 27 20
-rect 23 20 27 22
+rect 32 26 36 29
-rect 32 27 36 31
+rect 32 16 36 22
-rect 32 20 36 23
+rect -2 6 17 9
-rect 0 8 17 11
+rect 21 6 36 9
-rect 21 8 36 11
+rect -2 5 36 6
-rect 0 7 36 8
+rect 9 -2 10 2
-rect 9 0 10 4
+rect 23 -2 24 2
-rect 23 0 24 4
 << m2contact >>
-rect 2 31 6 35
+rect -2 29 2 33
-rect 32 31 36 35
+rect 32 29 36 33
-rect 5 0 9 4
+rect 5 -2 9 2
-rect 19 0 23 4
+rect 19 -2 23 2
 << metal2 >>
-rect 0 35 6 49
+rect -2 33 2 47
-rect 0 31 2 35
+rect -2 12 2 29
-rect 0 14 6 31
+rect 10 2 14 47
-rect 10 4 14 49
+rect 20 2 24 47
-rect 20 4 24 49
+rect 9 -2 14 2
-rect 9 0 14 4
+rect 23 -2 24 2
-rect 23 0 24 4
+rect 32 33 36 47
-rect 32 35 36 49
+rect 32 -2 36 29
-rect 32 0 36 31
 << m3p >>
-rect 0 0 34 49
+rect 0 0 34 45
 << labels >>
-rlabel m2contact 20 4 20 4 1 BR
+rlabel m2contact 20 2 20 2 1 BR
-rlabel metal2 10 4 10 4 1 BL
+rlabel metal2 10 2 10 2 1 BL
-rlabel metal2 32 31 32 31 7 gnd
+rlabel metal1 2 6 2 6 3 WL
-rlabel metal1 32 45 32 45 4 vdd
+rlabel metal2 -1 28 -1 28 1 gnd
-rlabel metal2 2 31 2 31 3 gnd
+rlabel metal2 33 28 33 28 1 gnd
-rlabel metal1 2 8 2 8 3 WL
+rlabel metal1 17 45 17 45 5 vdd
 << end >>

technology/scn3me_subm/mag_lib/replica_cell_6t.mag

@@ -1,122 +1,116 @@
 magic
 tech scmos
-timestamp 1516666672
+timestamp 1516980606
 << nwell >>
-rect -4 31 42 53
+rect -8 29 42 50
 << pwell >>
-rect -4 -6 42 31
+rect -8 -8 42 29
 << ntransistor >>
-rect 7 12 9 20
+rect 7 10 9 18
-rect 29 12 31 20
+rect 29 10 31 18
-rect 10 5 14 7
+rect 10 3 14 5
-rect 24 5 28 7
+rect 24 3 28 5
 << ptransistor >>
-rect 7 39 11 42
+rect 7 37 11 40
-rect 27 39 31 42
+rect 27 37 31 40
 << ndiffusion >>
-rect 2 20 6 23
+rect -2 16 7 18
-rect 32 20 36 23
-rect 6 16 7 20
 rect 2 12 7 16
-rect 9 16 10 20
+rect -2 10 7 12
-rect 9 12 14 16
+rect 9 14 10 18
-rect 28 16 29 20
+rect 9 10 14 14
-rect 24 12 29 16
+rect 28 14 29 18
-rect 31 16 32 20
+rect 24 10 29 14
-rect 31 12 36 16
+rect 31 16 36 18
-rect 10 7 14 12
+rect 31 12 32 16
-rect 24 7 28 12
+rect 31 10 36 12
-rect 10 4 14 5
+rect 10 5 14 10
-rect 24 4 28 5
+rect 24 5 28 10
+rect 10 2 14 3
+rect 24 2 28 3
 << pdiffusion >>
-rect 2 42 6 45
+rect 32 40 36 43
-rect 32 42 36 45
+rect 2 37 7 40
-rect 6 39 7 42
+rect 11 37 12 40
-rect 11 39 12 42
+rect 26 37 27 40
-rect 26 39 27 42
+rect 31 37 32 40
-rect 31 39 32 42
 << ndcontact >>
-rect 2 16 6 20
+rect -2 12 2 16
-rect 10 16 14 20
+rect 10 14 14 18
-rect 24 16 28 20
+rect 24 14 28 18
-rect 32 16 36 20
+rect 32 12 36 16
-rect 10 0 14 4
+rect 10 -2 14 2
-rect 24 0 28 4
+rect 24 -2 28 2
 << pdcontact >>
-rect 2 38 6 42
+rect -2 36 2 40
-rect 12 38 16 42
+rect 12 36 16 40
-rect 22 38 26 42
+rect 22 36 26 40
-rect 32 38 36 42
+rect 32 36 36 40
 << psubstratepcontact >>
-rect 2 23 6 27
+rect 32 22 36 26
-rect 32 23 36 27
 << nsubstratencontact >>
-rect 0 45 6 49
+rect 32 43 36 47
-rect 32 45 36 49
 << polysilicon >>
-rect 7 42 11 44
+rect 7 40 11 42
-rect 27 42 31 44
+rect 27 40 31 42
-rect 7 37 11 39
+rect 7 35 11 37
-rect 7 23 9 37
+rect 7 21 9 35
-rect 27 36 31 39
+rect 27 34 31 37
-rect 15 35 31 36
+rect 15 33 31 34
-rect 19 34 31 35
+rect 19 32 31 33
-rect 7 22 21 23
+rect 7 20 21 21
-rect 7 21 24 22
+rect 7 19 24 20
-rect 7 20 9 21
+rect 7 18 9 19
-rect 29 20 31 34
+rect 29 18 31 32
-rect 7 10 9 12
+rect 7 8 9 10
-rect 17 7 21 8
+rect 17 5 21 6
-rect 29 10 31 12
+rect 29 8 31 10
-rect 0 5 10 7
+rect -2 3 10 5
-rect 14 5 24 7
+rect 14 3 24 5
-rect 28 5 36 7
+rect 28 3 36 5
 << polycontact >>
-rect 15 31 19 35
+rect 15 29 19 33
-rect 21 22 25 26
+rect 21 20 25 24
-rect 17 8 21 12
+rect 17 6 21 10
 << metal1 >>
-rect 6 45 32 49
+rect -2 43 32 47
-rect 2 42 6 45
+rect -2 40 2 43
-rect 32 42 36 45
+rect 32 40 36 43
-rect 11 35 15 38
+rect -2 18 2 29
-rect 6 31 15 35
+rect 11 18 15 36
-rect 2 27 6 31
+rect 23 24 27 36
-rect 2 20 6 23
+rect 25 20 27 24
-rect 11 20 15 31
+rect 23 18 27 20
-rect 23 26 27 38
+rect 32 26 36 29
-rect 25 22 27 26
+rect -2 16 10 18
-rect 23 20 27 22
+rect 2 14 10 16
-rect 32 27 36 31
+rect 32 16 36 22
-rect 32 20 36 23
+rect -2 6 17 9
-rect 2 14 6 16
+rect 21 6 36 9
-rect 0 8 17 11
+rect -2 5 36 6
-rect 21 8 36 11
+rect 9 -2 10 2
-rect 0 7 36 8
+rect 23 -2 24 2
-rect 9 0 10 4
-rect 23 0 24 4
 << m2contact >>
-rect 2 31 6 35
+rect -2 29 2 33
-rect 32 31 36 35
+rect 32 29 36 33
-rect 5 0 9 4
+rect 5 -2 9 2
-rect 19 0 23 4
+rect 19 -2 23 2
 << metal2 >>
-rect 0 35 6 49
+rect -2 33 2 47
-rect 0 31 2 35
+rect -2 12 2 29
-rect 0 14 6 31
+rect 10 2 14 47
-rect 10 4 14 49
+rect 20 2 24 47
-rect 20 4 24 49
+rect 9 -2 14 2
-rect 9 0 14 4
+rect 23 -2 24 2
-rect 23 0 24 4
+rect 32 33 36 47
-rect 32 35 36 49
+rect 32 -2 36 29
-rect 32 0 36 31
 << m3p >>
-rect 0 0 34 49
+rect 0 0 34 45
 << labels >>
-rlabel metal2 2 31 2 31 3 gnd
+rlabel m2contact 20 2 20 2 1 BR
-rlabel metal2 32 31 32 31 7 gnd
+rlabel metal2 10 2 10 2 1 BL
-rlabel metal2 10 4 10 4 1 BL
+rlabel metal1 2 6 2 6 3 WL
-rlabel m2contact 20 4 20 4 1 BR
+rlabel metal2 -1 28 -1 28 1 gnd
-rlabel nsubstratencontact 2 45 2 45 4 vdd
+rlabel metal2 33 28 33 28 1 gnd
-rlabel metal1 2 7 2 7 3 WL
+rlabel metal1 17 45 17 45 5 vdd
 << end >>

technology/scn3me_subm/tech/tech.py

@@ -58,7 +58,7 @@ parameter["beta"] = 2
 drclvs_home=os.environ.get("DRCLVS_HOME")
 
 drc={}
-#grid size
+#grid size is 1/2 a lambda
 drc["grid"]=0.15
 #DRC/LVS test set_up
 drc["drc_rules"]=drclvs_home+"/calibreDRC_scn3me_subm.rul"