ucb-bar/hammer

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Hammer: Highly Agile Masks Made Effortlessly from RTL

Stars: 326
Forks: 80
Open beginner issues: 0
Indexed issues: 211

Dominant language: Python
License: BSD-3-Clause
Last GitHub push: Jul 13, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

Open All

211 open issues indexed

HAMMER not supporting the latest ASAP7 version (asap7sc7p5t_28) Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 30/100

ucb-bar/hammer#905 · Opened Jul 26, 2026
How to inject some Tcl code between synthesis and implementation stages for Vivado Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

ucb-bar/hammer#903 · Opened Mar 11, 2026
Handling multiple, scoped, optional constraint files Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

ucb-bar/hammer#902 · Opened Mar 9, 2026
Xcelium reported multiple "Unknown option *** " Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ucb-bar/hammer#898 · Opened Oct 29, 2025
Is this project actively maintained? Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

ucb-bar/hammer#895 · 5 comments · Opened Sep 13, 2025
Adding action for Automatic Test Pattern Gneration (ATPG) Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

ucb-bar/hammer#894 · Opened Sep 9, 2025
Add default empty value for lvs.icv.equiv_files key Open

bug

ucb-bar/hammer#885 · 2 assignees · Opened Feb 21, 2025
`find_regs_paths.json` not escape registers correctly, causing post-synthesis simulation to fail Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

ucb-bar/hammer#884 · Opened Feb 15, 2025
2 Problems about VLSI Flow Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ucb-bar/hammer#874 · Opened Aug 31, 2024
DC plugin doesn't work Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

ucb-bar/hammer#860 · 2 comments · Opened May 13, 2024
Option for additional command line arguments for tools Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 35/100

ucb-bar/hammer#786 · 1 comment · Opened May 9, 2023
ASAP7 "Foundry" SRAMs Open

enhancement

ucb-bar/hammer#739 · 1 comment · 2 reactions · 1 assignee · Opened Mar 13, 2023
VCS -top option is ambiguous Open

low priority Synopsys

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ucb-bar/hammer#771 · Opened Feb 3, 2023
Investigate VPD, FSDB Support Open

bug Cadence help wanted high priority

ucb-bar/hammer#769 · 3 comments · 1 assignee · Opened Jun 16, 2022
GDS Map File for Innovus and Voltus are in different formats Open

bug Cadence low priority

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ucb-bar/hammer#768 · Opened Feb 5, 2022
Hang if subprocess spawns dependent subprocess Open

advanced PR bug low priority usability

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ucb-bar/hammer#630 · 1 comment · Opened Jan 25, 2022
Hierarchical mode needs unit tests Open

enhancement hierarchical low priority

Difficulty 3/5 1-2 days Newbie friendliness 45/100

ucb-bar/hammer#627 · Opened Dec 29, 2021
Evaluate/support new ASAP7 6-track library Open

enhancement low priority

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ucb-bar/hammer#624 · 5 comments · Opened Oct 22, 2021
Add different SRAM initialization modes to ASAP7 plugin Open

beginner PR enhancement low priority

Difficulty 5/5 Over a week Newbie friendliness 15/100

ucb-bar/hammer#623 · Opened Oct 15, 2021
Power straps bbox should be implemented Open

API beginner PR enhancement low priority usability

Difficulty 3/5 1-2 days Newbie friendliness 35/100

ucb-bar/hammer#617 · Opened Aug 13, 2021
Rename hammer.d -> hammer.mk Open

beginner PR Chipyard low priority

Difficulty 1/5 Under an hour Newbie friendliness 35/100

ucb-bar/hammer#616 · 1 comment · Opened Aug 13, 2021
`place_pins` and `place_bumps` steps usually mutually exclusive Open

beginner PR Cadence enhancement low priority usability

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ucb-bar/hammer#767 · 1 comment · Opened Feb 20, 2021
Hierarchical flat mode doesn't properly set synthesis inputs Open

beginner PR hierarchical low priority usability

Difficulty 4/5 3-5 days Newbie friendliness 42/100

ucb-bar/hammer#589 · 1 comment · Opened Aug 7, 2020
SDCTool should support generating unit setter Open

beginner PR enhancement low priority SDC

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ucb-bar/hammer#588 · Opened Jul 20, 2020
vcs sim flow doesn't include -e configs in dict Open

bug low priority usability

Difficulty 3/5 1-2 days Newbie friendliness 35/100

ucb-bar/hammer#587 · 1 comment · Opened Jul 19, 2020
X-to-Y steps should remove old configs even in full output mode Open

advanced PR API enhancement low priority

Difficulty 3/5 1-2 days Newbie friendliness 40/100

ucb-bar/hammer#575 · 2 comments · Opened May 29, 2020
LEF parser: MACRO corner case Open

beginner PR bug low priority

Difficulty 3/5 1-2 days Newbie friendliness 38/100

ucb-bar/hammer#570 · 1 comment · Opened Apr 11, 2020
Ability to add the same hooks to all hierarchical modules Open

advanced PR bug enhancement medium priority

Difficulty 4/5 3-5 days Newbie friendliness 45/100

ucb-bar/hammer#564 · 2 comments · Opened Feb 21, 2020
Support assembly/hierarchical by abutment Open

advanced PR enhancement floorplan help wanted hierarchical

Difficulty 5/5 Over a week Newbie friendliness 20/100

ucb-bar/hammer#563 · 1 comment · Opened Feb 12, 2020
Add help text that lists plugins, steps, and hooks available Open

advanced PR enhancement

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ucb-bar/hammer#562 · 1 comment · Opened Feb 12, 2020
Make dump_stackup_to_json.tcl write out the power_strap_width_table Open

Cadence low priority

Difficulty 3/5 1-2 days Newbie friendliness 38/100

ucb-bar/hammer#766 · Opened Dec 14, 2019
Power straps must also know about MAXWIDTH Open

advanced PR medium priority

ucb-bar/hammer#553 · 2 comments · 1 assignee · Opened Dec 13, 2019
Make writing databases optional Open

Cadence usability very low priority

Difficulty 3/5 1-2 days Newbie friendliness 42/100

ucb-bar/hammer#765 · Opened Dec 3, 2019
Enable textual description/modification of hooks and orders Open

advanced PR enhancement high priority usability

Difficulty 5/5 Over a week Newbie friendliness 25/100

ucb-bar/hammer#547 · 1 comment · Opened Nov 26, 2019
MMMC Corners Error Message Open

enhancement low priority usability

ucb-bar/hammer#546 · 1 comment · 1 assignee · Opened Nov 21, 2019
Support spaces in `sim.inputs` Open

API beginner PR low priority Synopsys

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

ucb-bar/hammer#770 · Opened Nov 7, 2019
Accept int locations in pin constraints as API sugar Open

enhancement low priority usability

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

ucb-bar/hammer#539 · 1 comment · Opened Oct 17, 2019
DRY Hammer API documentation Open

advanced PR documentation usability

Difficulty 3/5 1-2 days Newbie friendliness 20/100

ucb-bar/hammer#538 · Opened Oct 14, 2019
ASAP7 GDS scaling doesn't work with hierarchical Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

ucb-bar/hammer#533 · Opened Oct 10, 2019
Stage/Phase based flow manager Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

ucb-bar/hammer#532 · 9 comments · Opened Oct 7, 2019
Power Straps API should check against VIARULEs Open

enhancement low priority

Difficulty 3/5 1-2 days Newbie friendliness 42/100

ucb-bar/hammer#530 · Opened Oct 4, 2019
Additional DRC/LVS text should be specified by deck Open

bug medium priority

Difficulty 3/5 1-2 days Newbie friendliness 45/100

ucb-bar/hammer#528 · Opened Oct 3, 2019
Invoking Python-based hooks from TCL tools Open

advanced PR API enhancement low priority

Difficulty 5/5 Over a week Newbie friendliness 25/100

ucb-bar/hammer#525 · 3 comments · Opened Sep 28, 2019
stackup.py math error for LEF58_SPACINGTABLE Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 38/100

ucb-bar/hammer#523 · 2 comments · Opened Sep 27, 2019
Make functional (map, filter, etc) stuff in Hammer easy to write Open

DeveloperSupport enhancement low priority usability

Difficulty 5/5 Over a week Newbie friendliness 35/100

ucb-bar/hammer#522 · Opened Sep 22, 2019
Hook registry? Open

advanced PR enhancement low priority usability

Difficulty 5/5 Over a week Newbie friendliness 25/100

ucb-bar/hammer#516 · Opened Sep 12, 2019
Obstructions should use stack up API for layers Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

ucb-bar/hammer#509 · Opened Sep 5, 2019
bad error message when path of obstruction does not start with module name Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ucb-bar/hammer#508 · Opened Sep 5, 2019
Clean up how hierarchical netlists are passed to LVS Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ucb-bar/hammer#507 · Opened Sep 5, 2019
use non-multi-vt for asap7 Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

ucb-bar/hammer#501 · 4 comments · Opened Sep 1, 2019

ucb-bar/hammer

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