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OpenRAM
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56 Commits

Author SHA1 Message Date
Matt Guthaus 19d46f5954 Finalized separation of netlist/layout creation. 2018-08-27 14:18:32 -07:00
Matt Guthaus 9983408fa3 Add verilog_write to sram wrapper for verilog unit test 2018-07-19 10:05:30 -07:00
Matt Guthaus f3ae29fe0b Getting single bank to work reliably. Removed tri_gate from bank 
for now. Will add it in multibank arrays only. Not needed for
separate DIN and DOUT ports.
 2018-07-13 14:45:46 -07:00
Matt Guthaus 834fbac8de Remove extra print statements. 
Add wrappers for file generation in sram wrapper class.
 2018-07-13 09:38:43 -07:00
Matt Guthaus 0c23efe49b Reference local sram instance in sram.py. 2018-07-13 09:30:14 -07:00
Matt Guthaus e6b1fcb44c Refactor banks to use inheritance with a top-level SRAM wrapper class. 2018-07-12 10:30:45 -07:00
Matt Guthaus d95a1925d4 Refactor banked SRAM into multiple files and dynamically load in SRAM 2018-07-10 14:17:09 -07:00
Matt Guthaus 707f303eb7 Fix syntax error in sram.py 2018-07-10 10:34:54 -07:00
Matt Guthaus 25cf57ede5 Push create bus functions down into layout class. 2018-07-10 10:06:59 -07:00
Matt Guthaus 94db2052dd Consolidate metal pitch rules to new design class 2018-07-09 15:42:46 -07:00
Matt Guthaus f34c4eb7dc Convert entire OpenRAM to use python3. Works with Python 3.6. 
Major changes:
Remove mpmath library and use numpy instead.
Convert bytes to new bytearrays.
Fix class name check for duplicate gds instances.
Add explicit integer conversion from floats.
Fix importlib reload from importlib library
Fix new key/index syntax issues.
Fix filter and map conversion to lists.
Fix deprecation warnings.
Fix Circuits vs Netlist in Magic LVS results.
Fix file closing warnings.
 2018-05-14 16:15:45 -07:00
Matt Guthaus 0e35937da5 Commit local changes. Forgot what the status is. 2018-05-11 09:15:29 -07:00
Matt Guthaus a0bf5345f8 Mostly working for 1 bank. 2018-03-23 08:14:26 -07:00
Matt Guthaus 97c08bce95 Add dffs to control logic. Rename layout pin segment/rect functions for consistency. Redo gnd/vdd pins in control. 
Shift s_en buffers even with other cells.
 2018-03-23 08:14:09 -07:00
Matt Guthaus 696433b1ec Add bank_sel to bank_select module as input. 
Remove reference to control in sram.
Add dff_buf_array to options.
Added inverted DFF
Add variable height pinvbuf
 2018-03-23 08:13:39 -07:00
Matt Guthaus bab92fcf38 Rework hierarchical decoder to not be folded. Remove address from central bank bus and access via side pins now. Eight way column mux now works. 2018-03-23 08:13:20 -07:00
Matt Guthaus 1f81b24e96 Single bank passing DRC and LVS again. 
Unfold hierarchical decoder to improve routability.
 2018-03-23 08:13:10 -07:00
Matt Guthaus b867e163a6 Move label pins to center like layout pins. 
Rework of control logic with vertical poly. Passes DRC/LVS.
Single bank passing DRC.
 2018-03-23 08:12:59 -07:00
Matt Guthaus ed8eaed54f Reworking control logic for veritcal poly. Rewrote delay line. Rewrote buffered-DFF array. 2018-03-23 08:12:47 -07:00
Matt Guthaus 1eda3aa131 Add back offset all coordinates in sram.py. 2018-03-05 14:22:24 -08:00
Matt Guthaus 4205a6a700 Connect bank supply rings in sram.py. 2018-03-05 13:49:22 -08:00
Matt Guthaus 0f721a3d40 Add vdd and gnd rails around bank structure. 2018-03-04 17:53:22 -08:00
Hunter Nichols d0e6dc9ce7 First version of analytical power models. Still huge room for improvement. Analytical power printed with 1 verbose level. 2018-02-26 16:32:28 -08:00
Hunter Nichols 62ad30e741 Added initial version of analytical power esitmation. Loops through instances but power estimate is not accurate. 2018-02-22 19:35:54 -08:00
Hunter Nichols d4a0f48d4f Added power calculations for inverter. Still testing. 2018-02-21 19:51:21 -08:00
Hunter Nichols 179a27b0e3 Added some power functions. 2018-02-20 18:22:23 -08:00
Hunter Nichols 8ea384a761 Fixed merging issues with power branch 2018-02-14 15:21:42 -08:00
Matt Guthaus f86985821a Begin modifications for corner-based characterization. Made stimuli.py a class. Golden output files are not updated. 2018-02-09 15:33:03 -08:00
Matt Guthaus d684189241 Don't output text in SRAM during unit test. 2018-02-08 14:58:55 -08:00
Matt Guthaus 17716191c1 Clean up time statements in openram output 2018-02-08 13:11:18 -08:00
Matt Guthaus 6c89f7965d Refactor openram.py. 2018-02-08 12:47:19 -08:00
mguthaus e01d5b7c61 Disable virtual connects at top level LVS with Calibre. 2018-02-05 14:52:51 -08:00
Matt Guthaus 84b42b0170 Fix bug in trim netlist. Add info comments to spice netlist and trimmed netlist. Increase verbosity for simulations. 2018-02-02 19:33:07 -08:00
Matt Guthaus d6d96907ef Route to the right in the bank decode for DRC. 2018-02-02 15:50:45 -08:00
Hunter Nichols db4913dd9c Added skeleton code for analytical power in functions with analytical delay. 2018-02-02 12:31:34 -08:00
Hunter Nichols 56f7caf59f Added first test power model to sram 2018-02-02 12:31:33 -08:00
Matt Guthaus 490a70dee9 Simplify configuration file to allow all options to be over-riden. Move default module types to options.py to simplify config file. 2018-01-19 16:38:19 -08:00
Matt Guthaus 9a4b2b4341 Revised LEF and Verilog generation. Does not read GDS for speed improvements. 2017-12-19 09:01:24 -08:00
Matt Guthaus abee235963 Rewrite the parameterized transistor and gate classes. 
Changes propagate through all designs.
All modules use instance and layout pins.
 2017-12-12 15:04:01 -08:00
Matt Guthaus 107cad15a1 Change layout function names to be consistent. 2017-11-30 12:01:04 -08:00
mguthaus 09ca8ba17d Improve output format. Rename option to be more sensible. 2017-11-22 15:57:29 -08:00
Matt Guthaus 29c5ab48f0 Add spice pruning for speed-up. Fix spice search bugs. Add time in stages to openram output. 2017-11-14 13:24:14 -08:00
Matt Guthaus 95f1a24f72 Change default delay modeling to analytical. Add command-line option characterization by simulation (-c). 2017-11-09 11:13:44 -08:00
Matt Guthaus 788f3d9122 4-bank SRAMs are now working. 2017-10-04 18:05:45 -07:00
Matt Guthaus 21c77645d3 Remove LVS correspondence points for multibank in single bank. 2017-09-29 16:44:24 -07:00
Matt Guthaus e06e1691c8 Two bank SRAMs working in both technologies. 2017-09-29 16:22:13 -07:00
Matt Guthaus d29dd03373 SRAM single bank passing DRC/LVS. 2017-09-13 15:46:41 -07:00
Matt Guthaus cf940fb15d Development version of new pin data structure. Tests pass LVS/DRC except for bank level. 2017-08-23 15:02:15 -07:00
Matt Guthaus 20d8c0bc45 Improved characterizer. 2017-07-06 08:42:25 -07:00
mguthaus e92cb9ecef Removed array_type from ms_flop_array since it is extraneous code. 2017-07-03 12:08:50 -07:00