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Fixup the bitcell.py to make subclassing work. 

Read in the GDS properties inside the __init__ method.

Signed-off-by: Tim 'mithro' Ansell <me@mith.ro>
This commit is contained in:
Tim 'mithro' Ansell 2020-10-31 15:49:18 -07:00
parent 029f655c1b
commit 5c1250191c
1 changed files with 21 additions and 15 deletions
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34
compiler/bitcells/bitcell.py
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@ -20,29 +20,35 @@ class bitcell(bitcell_base.bitcell_base):
library. library.
""" """
# If we have a split WL bitcell, if not be backwards name = "cell_6t"
# compatible in the tech file pin_names = [
pin_names = [props.bitcell.cell_6t.pin.bl, props.bitcell.cell_6t.pin.bl,
props.bitcell.cell_6t.pin.br, props.bitcell.cell_6t.pin.br,
props.bitcell.cell_6t.pin.wl, props.bitcell.cell_6t.pin.wl,
props.bitcell.cell_6t.pin.vdd, props.bitcell.cell_6t.pin.vdd,
props.bitcell.cell_6t.pin.gnd] props.bitcell.cell_6t.pin.gnd,
]
# If we have a split WL bitcell, if not be backwards
# compatible in the tech file
type_list = ["OUTPUT", "OUTPUT", "INPUT", "POWER", "GROUND"] type_list = ["OUTPUT", "OUTPUT", "INPUT", "POWER", "GROUND"]
storage_nets = ['Q', 'Q_bar'] storage_nets = ['Q', 'Q_bar']
(width, height) = utils.get_libcell_size("cell_6t",
GDS["unit"],
layer["boundary"])
pin_map = utils.get_libcell_pins(pin_names, "cell_6t", GDS["unit"])
def __init__(self, name=""): def __init__(self, name=""):
# Ignore the name argument bitcell_base.bitcell_base.__init__(self, name)
bitcell_base.bitcell_base.__init__(self, "cell_6t")
debug.info(2, "Create bitcell") debug.info(2, "Create bitcell")
self.width = bitcell.width (width, height) = utils.get_libcell_size(name,
self.height = bitcell.height GDS["unit"],
self.pin_map = bitcell.pin_map layer["boundary"])
pin_map = utils.get_libcell_pins(self.pin_names,
name,
GDS["unit"])
self.width = width
self.height = height
self.pin_map = pin_map
self.add_pin_types(self.type_list) self.add_pin_types(self.type_list)
self.nets_match = self.do_nets_exist(self.storage_nets) self.nets_match = self.do_nets_exist(self.storage_nets)