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Reimplement off grid pins.

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Long pins aren't accessed on end pins anymore.
Fix problem with multiple non-enclosed space causing blockages.
Add partial pin offgrid enclosure algorithm.
This commit is contained in:
mrg
2022-05-02 15:43:14 -07:00
parent 7195d81736
commit b1bb9151c4
17 changed files with 274 additions and 155 deletions
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compiler/modules/replica_bitcell_array.py
+35 -14
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@@ -331,6 +331,7 @@ class replica_bitcell_array(bitcell_base_array):
self.translate_all(array_offset.scale(-1, -1))
# Add extra width on the left and right for the unused WLs
self.width = self.dummy_col_insts[1].rx() + self.unused_offset.x
self.height = self.dummy_row_insts[1].uy()
@@ -340,6 +341,12 @@ class replica_bitcell_array(bitcell_base_array):
self.route_unused_wordlines()
lower_left = self.find_lowest_coords()
upper_right = self.find_highest_coords()
self.width = upper_right.x - lower_left.x
self.height = upper_right.y - lower_left.y
self.translate_all(lower_left)
self.add_boundary()
self.DRC_LVS()
@@ -356,6 +363,18 @@ class replica_bitcell_array(bitcell_base_array):
def get_main_array_right(self):
return self.bitcell_array_inst.rx()
def get_replica_top(self):
return max([x.uy() for x in self.replica_col_insts if x] + [self.get_main_array_top()])
def get_replica_bottom(self):
return min([x.by() for x in self.replica_col_insts if x] + [self.get_main_array_bottom()])
def get_replica_left(self):
return min([x.lx() for x in self.replica_col_insts if x] + [self.get_main_array_left()])
def get_replica_right(self):
return min([x.rx() for x in self.replica_col_insts if x] + [self.get_main_array_right()])
def get_column_offsets(self):
"""
Return an array of the x offsets of all the regular bits
@@ -567,14 +586,15 @@ class replica_bitcell_array(bitcell_base_array):
top_loc = vector(self.width + offset_multiple * self.vertical_pitch, self.height)
layer = self.supply_stack[2]
self.add_path(layer, [bot_loc, top_loc])
self.add_layout_pin_rect_center(text=name,
layer=layer,
offset=top_loc)
self.add_layout_pin_rect_center(text=name,
layer=layer,
offset=bot_loc)
# self.add_layout_pin_rect_ends(text=name,
# layer=layer,
# start=bot_loc,
# end=top_loc)
self.add_layout_pin_segment_center(text=name,
layer=layer,
start=bot_loc,
end=top_loc)
return (bot_loc, top_loc)
@@ -590,14 +610,15 @@ class replica_bitcell_array(bitcell_base_array):
right_loc = vector(self.width, self.height + offset_multiple * self.horizontal_pitch)
layer = self.supply_stack[0]
self.add_path(layer, [left_loc, right_loc])
self.add_layout_pin_rect_center(text=name,
layer=layer,
offset=left_loc)
self.add_layout_pin_rect_center(text=name,
layer=layer,
offset=right_loc)
# self.add_layout_pin_rect_ends(text=name,
# layer=layer,
# start=left_loc,
# end=right_loc)
self.add_layout_pin_segment_center(text=name,
layer=layer,
start=left_loc,
end=right_loc)
return (left_loc, right_loc)