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OpenRAM
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Use array ur instead of bank ur to pace row addr dff

This commit is contained in:
Matt Guthaus 2018-11-19 08:41:26 -08:00
parent 7709d5caa7
commit 4630f52de2
3 changed files with 11 additions and 10 deletions
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4
README.md
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@ -1,6 +1,6 @@
# OpenRAM # OpenRAM
Stable: [![pipeline status](https://scone.soe.ucsc.edu:8888/mrg/PrivateRAM/badges/master/pipeline.svg?private_token=ynB6rSFLzvKUseoBPcwV)](https://github.com/VLSIDA/PrivateRAM/commits/master) Master: [![pipeline status](https://scone.soe.ucsc.edu:8888/mrg/PrivateRAM/badges/master/pipeline.svg?private_token=ynB6rSFLzvKUseoBPcwV)](https://github.com/VLSIDA/PrivateRAM/commits/master)
Unstable: [![pipeline status](https://scone.soe.ucsc.edu:8888/mrg/PrivateRAM/badges/dev/pipeline.svg?private_token=ynB6rSFLzvKUseoBPcwV)](https://github.com/VLSIDA/PrivateRAM/commits/dev) Dev: [![pipeline status](https://scone.soe.ucsc.edu:8888/mrg/PrivateRAM/badges/dev/pipeline.svg?private_token=ynB6rSFLzvKUseoBPcwV)](https://github.com/VLSIDA/PrivateRAM/commits/dev)
[![Download](images/download.svg)](https://github.com/VLSIDA/PrivateRAM/archive/master.zip) [![Download](images/download.svg)](https://github.com/VLSIDA/PrivateRAM/archive/master.zip)
[![License: BSD 3-clause](./images/license_badge.svg)](./LICENSE) [![License: BSD 3-clause](./images/license_badge.svg)](./LICENSE)

1
compiler/modules/bank.py
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@ -66,7 +66,6 @@ class bank(design.design):
self.DRC_LVS() self.DRC_LVS()
def add_pins(self): def add_pins(self):
""" Adding pins for Bank module""" """ Adding pins for Bank module"""
for port in self.read_ports: for port in self.read_ports:

14
compiler/sram_1bank.py
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@ -73,9 +73,10 @@ class sram_1bank(sram_base):
self.control_logic_insts[port].place(control_pos[port]) self.control_logic_insts[port].place(control_pos[port])
# The row address bits are placed above the control logic aligned on the right. # The row address bits are placed above the control logic aligned on the right.
# Or just below the top of the bank, whichever is greater. x_offset = self.control_logic_insts[port].rx() - self.row_addr_dff_insts[port].width
row_addr_pos[port] = vector(self.control_logic_insts[port].rx() - self.row_addr_dff_insts[port].width, # It is aove the control logic but below the top of the bitcell array
max(self.control_logic_insts[port].uy(), self.bank_inst.ul().y - self.row_addr_dff_insts[port].height)) y_offset = max(self.control_logic_insts[port].uy(), self.bank.bank_array_ur.y - self.row_addr_dff_insts[port].height)
row_addr_pos[port] = vector(x_offset, y_offset)
self.row_addr_dff_insts[port].place(row_addr_pos[port]) self.row_addr_dff_insts[port].place(row_addr_pos[port])
# Add the col address flops below the bank to the left of the lower-left of bank array # Add the col address flops below the bank to the left of the lower-left of bank array
@ -104,9 +105,10 @@ class sram_1bank(sram_base):
self.control_logic_insts[port].place(control_pos[port], mirror="MY") self.control_logic_insts[port].place(control_pos[port], mirror="MY")
# The row address bits are placed above the control logic aligned on the left. # The row address bits are placed above the control logic aligned on the left.
# Or just below the top of the bank, whichever is greater. x_offset = control_pos[port].x - self.control_logic_insts[port].width + self.row_addr_dff_insts[port].width
row_addr_pos[port] = vector(control_pos[port].x - self.control_logic_insts[port].width + self.row_addr_dff_insts[port].width, # It is above the control logic but below the top of the bitcell array
max(self.control_logic_insts[port].uy(), self.bank_inst.ul().y - self.row_addr_dff_insts[port].height)) y_offset = max(self.control_logic_insts[port].uy(), self.bank.bank_array_ur.y - self.row_addr_dff_insts[port].height)
row_addr_pos[port] = vector(x_offset, y_offset)
self.row_addr_dff_insts[port].place(row_addr_pos[port], mirror="MY") self.row_addr_dff_insts[port].place(row_addr_pos[port], mirror="MY")
# Add the col address flops above the bank to the right of the upper-right of bank array # Add the col address flops above the bank to the right of the upper-right of bank array