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https://github.com/VLSIDA/OpenRAM.git
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Merge branch 'dev' into multibank
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@@ -235,10 +235,10 @@ class delay(simulation):
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qbar_meas = voltage_at_measure("v_qbar_{0}".format(meas_tag), qbar_name)
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return {bit_polarity.NONINVERTING: q_meas, bit_polarity.INVERTING: qbar_meas}
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def create_sen_and_bitline_path_measures(self):
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"""Create measurements for the s_en and bitline paths for individual delays per stage."""
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# FIXME: There should be a default_read_port variable in this case, pathing is done with this
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# but is never mentioned otherwise
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port = self.read_ports[0]
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@@ -253,37 +253,37 @@ class delay(simulation):
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debug.check(len(bl_paths)==1, 'Found {0} paths which contain the bitline net.'.format(len(bl_paths)))
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sen_path = sen_paths[0]
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bitline_path = bl_paths[0]
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# Get the measures
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self.sen_path_meas = self.create_delay_path_measures(sen_path)
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self.bl_path_meas = self.create_delay_path_measures(bitline_path)
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all_meas = self.sen_path_meas + self.bl_path_meas
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# Paths could have duplicate measurements, remove them before they go to the stim file
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all_meas = self.remove_duplicate_meas_names(all_meas)
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# FIXME: duplicate measurements still exist in the member variables, since they have the same
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# name it will still work, but this could cause an issue in the future.
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return all_meas
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return all_meas
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def remove_duplicate_meas_names(self, measures):
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"""Returns new list of measurements without duplicate names"""
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name_set = set()
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unique_measures = []
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for meas in measures:
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if meas.name not in name_set:
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name_set.add(meas.name)
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unique_measures.append(meas)
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return unique_measures
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def create_delay_path_measures(self, path):
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"""Creates measurements for each net along given path."""
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# Determine the directions (RISE/FALL) of signals
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path_dirs = self.get_meas_directions(path)
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# Create the measurements
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path_meas = []
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for i in range(len(path) - 1):
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@@ -297,26 +297,26 @@ class delay(simulation):
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# Some bitcell logic is hardcoded for only read zeroes, force that here as well.
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path_meas[-1].meta_str = sram_op.READ_ZERO
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path_meas[-1].meta_add_delay = True
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return path_meas
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def get_meas_directions(self, path):
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"""Returns SPICE measurements directions based on path."""
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# Get the edges modules which define the path
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edge_mods = self.graph.get_edge_mods(path)
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# Convert to booleans based on function of modules (inverting/non-inverting)
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mod_type_bools = [mod.is_non_inverting() for mod in edge_mods]
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# FIXME: obtuse hack to differentiate s_en input from bitline in sense amps
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if self.sen_name in path:
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# Force the sense amp to be inverting for s_en->DOUT.
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# Force the sense amp to be inverting for s_en->DOUT.
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# bitline->DOUT is non-inverting, but the module cannot differentiate inputs.
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s_en_index = path.index(self.sen_name)
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mod_type_bools[s_en_index] = False
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debug.info(2, 'Forcing sen->dout to be inverting.')
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# Use these to determine direction list assuming delay start on neg. edge of clock (FALL)
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# Also, use shorthand that 'FALL' == False, 'RISE' == True to simplify logic
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bool_dirs = [False]
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@@ -324,9 +324,9 @@ class delay(simulation):
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for mod_bool in mod_type_bools:
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cur_dir = (cur_dir == mod_bool)
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bool_dirs.append(cur_dir)
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# Convert from boolean to string
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return ['RISE' if dbool else 'FALL' for dbool in bool_dirs]
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return ['RISE' if dbool else 'FALL' for dbool in bool_dirs]
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def set_load_slew(self, load, slew):
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""" Set the load and slew """
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@@ -827,7 +827,7 @@ class delay(simulation):
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debug.error("Failed to Measure Read Port Values:\n\t\t{0}".format(read_port_dict), 1)
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result[port].update(read_port_dict)
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self.path_delays = self.check_path_measures()
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return (True, result)
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@@ -932,7 +932,7 @@ class delay(simulation):
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def check_path_measures(self):
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"""Get and check all the delays along the sen and bitline paths"""
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# Get and set measurement, no error checking done other than prints.
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debug.info(2, "Checking measures in Delay Path")
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value_dict = {}
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@@ -1179,7 +1179,7 @@ class delay(simulation):
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#char_sram_data["sen_path_names"] = sen_names
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# FIXME: low-to-high delays are altered to be independent of the period. This makes the lib results less accurate.
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self.alter_lh_char_data(char_port_data)
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return (char_sram_data, char_port_data)
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def alter_lh_char_data(self, char_port_data):
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@@ -1222,14 +1222,14 @@ class delay(simulation):
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for meas in self.sen_path_meas:
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sen_name_list.append(meas.name)
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sen_delay_list.append(value_dict[meas.name])
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bl_name_list = []
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bl_delay_list = []
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for meas in self.bl_path_meas:
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bl_name_list.append(meas.name)
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bl_delay_list.append(value_dict[meas.name])
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return sen_name_list, sen_delay_list, bl_name_list, bl_delay_list
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return sen_name_list, sen_delay_list, bl_name_list, bl_delay_list
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def calculate_inverse_address(self):
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"""Determine dummy test address based on probe address and column mux size."""
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