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Changed routing to allow for 2 write port with write mask.

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jsowash
2019-09-03 14:43:03 -07:00
parent 01bdea23ae
commit dd67490823
4 changed files with 67 additions and 47 deletions
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compiler/sram/sram_1bank.py
+11 -6
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@@ -138,7 +138,7 @@ class sram_1bank(sram_base):
if port in self.write_ports:
if self.write_size:
# Add the write mask flops below the write mask AND array.
wmask_pos[port] = vector(self.bank.bank_array_ur.x - self.data_dff_insts[port].width,
wmask_pos[port] = vector(self.bank.bank_array_ur.x - self.wmask_dff_insts[port].width,
self.bank.height + max_gap_size_wmask + self.dff.height)
self.wmask_dff_insts[port].place(wmask_pos[port], mirror="MX")
@@ -355,11 +355,16 @@ class sram_1bank(sram_base):
""" Connect the output of the data flops to the write driver """
# This is where the channel will start (y-dimension at least)
for port in self.write_ports:
if port%2:
offset = self.data_dff_insts[port].ll() - vector(0, (self.word_size+2)*self.m1_pitch)
if self.write_size:
if port % 2:
offset = self.data_dff_insts[port].ll() - vector(0, (self.word_size + 2)*self.m3_pitch)
else:
offset = self.data_dff_insts[port].ul() + vector(0, 2 * self.m3_pitch)
else:
offset = self.data_dff_insts[port].ul() + vector(0, 2*self.m1_pitch)
if port%2:
offset = self.data_dff_insts[port].ll() - vector(0, (self.word_size+2)*self.m1_pitch)
else:
offset = self.data_dff_insts[port].ul() + vector(0, 2*self.m1_pitch)
dff_names = ["dout_{}".format(x) for x in range(self.word_size)]
dff_pins = [self.data_dff_insts[port].get_pin(x) for x in dff_names]
@@ -399,7 +404,7 @@ class sram_1bank(sram_base):
# This is where the channel will start (y-dimension at least)
for port in self.write_ports:
if port % 2:
offset = self.wmask_dff_insts[port].ll() - vector(0, (self.word_size + 2) * self.m1_pitch)
offset = self.wmask_dff_insts[port].ll() - vector(0, (self.num_wmasks+2) * self.m1_pitch)
else:
offset = self.wmask_dff_insts[port].ul() + vector(0, 2 * self.m1_pitch)