OpenROAD Flow Scripts README
The ORFS flow diagram assigns GDSII generation and DRC/LVS checks to KLayout.
- Published
- Not stated
- Retrieved
- 2026-10-13
30 entities and 39 documented connections shown.
Drag the map or use pan buttons to move. Tab to a node or connection and press Enter to inspect its evidence. Arrows follow the actual claim direction.
| Subject | Relationship | Object | Status | Evidence |
|---|---|---|---|---|
| OpenROAD Flow Scripts | KLayout | SUPPORTEDValidity dates not established | Why are these connected?KLayout is documented for the finishing stage. This is not a verified signoff result. OpenROAD Flow Scripts READMEThe ORFS flow diagram assigns GDSII generation and DRC/LVS checks to KLayout.
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| OSS CAD Suite | Amaranth HDL | SUPPORTEDValidity dates not established | Why are these connected?Listed distribution component at the pinned README revision; availability depends on the upstream release and supported platform. Component license is not replaced by the distribution license. OSS CAD Suite READMEThe OSS CAD Suite README lists Amaranth HDL among its distribution components.
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| OSS CAD Suite | Pono | SUPPORTEDValidity dates not established | Why are these connected?The official OSS CAD Suite manifest lists this component. Platform availability, target versions and individual component licenses remain separate; inclusion is not universal interoperability. OSS CAD Suite pinned component manifestThe pinned OSS CAD Suite component list includes Pono.
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| OSS CAD Suite | SymbiYosys | SUPPORTEDValidity dates not established | Why are these connected?The official OSS CAD Suite manifest lists this component. Platform availability, target versions and individual component licenses remain separate; inclusion is not universal interoperability. OSS CAD Suite pinned component manifestThe pinned OSS CAD Suite component list includes sby (formerly SymbiYosys).
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| cocotb | Verilator | SUPPORTEDValidity dates not established | Why are these connected?Verilator documentation names cocotb as a library that supports Verilator. This establishes cocotb as the support provider; versions and execution are not established by this source. verilator pinned upstream documentationVerilator documentation names cocotb as a library that supports Verilator. This establishes cocotb as the support provider; versions and execution are not established by this source.
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| SymbiYosys | Yosys | SUPPORTEDValidity dates not established | Why are these connected?SymbiYosys describes itself as a front-end for Yosys-based formal verification flows; solver and frontend selection affect applicability. symbiyosys pinned upstream documentationSymbiYosys describes itself as a front-end for Yosys-based formal verification flows; solver and frontend selection affect applicability.
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| OSS CAD Suite | AIGER | SUPPORTEDValidity dates not established | Why are these connected?The official OSS CAD Suite manifest lists this component. Platform availability, target versions and individual component licenses remain separate; inclusion is not universal interoperability. OSS CAD Suite pinned component manifestThe pinned OSS CAD Suite component list includes aiger.
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| OSS CAD Suite | slang | SUPPORTEDValidity dates not established | Why are these connected?The official OSS CAD Suite manifest lists this component. Platform availability, target versions and individual component licenses remain separate; inclusion is not universal interoperability. OSS CAD Suite pinned component manifestThe pinned OSS CAD Suite component list includes Slang.
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| OpenLane 2 | Yosys | SUPPORTEDValidity dates not established | Why are these connected?OpenLane describes Yosys among its infrastructure components. openlane2 pinned upstream documentationOpenLane describes Yosys among its infrastructure components.
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| OSS CAD Suite | Icarus Verilog | SUPPORTEDValidity dates not established | Why are these connected?The official OSS CAD Suite manifest lists this component. Platform availability, target versions and individual component licenses remain separate; inclusion is not universal interoperability. OSS CAD Suite pinned component manifestThe pinned OSS CAD Suite component list includes iverilog.
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| Yosys | SymbiYosys | SUPPORTEDValidity dates not established | Why are these connected?The Yosys README links SBY as its formal verification front-end; installed solvers and supported syntax remain separate requirements. yosys pinned upstream documentationThe Yosys README links SBY as its formal verification front-end; installed solvers and supported syntax remain separate requirements.
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| OSS CAD Suite | EQY | SUPPORTEDValidity dates not established | Why are these connected?The official OSS CAD Suite manifest lists this component. Platform availability, target versions and individual component licenses remain separate; inclusion is not universal interoperability. OSS CAD Suite pinned component manifestThe pinned OSS CAD Suite component list includes eqy.
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| OpenROAD Flow Scripts | Yosys | SUPPORTEDValidity dates not established | Why are these connected?The OpenROAD README describes an ORFS flow whose synthesis stage uses Yosys. The OpenROAD application itself is not the complete ORFS flow. openroad pinned upstream documentationThe OpenROAD README describes an ORFS flow whose synthesis stage uses Yosys. The OpenROAD application itself is not the complete ORFS flow.
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| Yosys | Verilator | SUPPORTEDValidity dates not established | Why are these connected?The README recommends a separate Verilator lint check because the read_verilog command does not perform syntax checking. yosys pinned upstream documentationThe README recommends a separate Verilator lint check because the read_verilog command does not perform syntax checking.
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| OpenROAD Flow Scripts | SKY130 Open PDK | SUPPORTEDValidity dates not established | Why are these connected?The README names SKY130 among open PDKs supported in OpenROAD-flow-scripts; a selected platform and library configuration is required. openroad pinned upstream documentationThe README names SKY130 among open PDKs supported in OpenROAD-flow-scripts; a selected platform and library configuration is required.
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| OSS CAD Suite | MCY | SUPPORTEDValidity dates not established | Why are these connected?The official OSS CAD Suite manifest lists this component. Platform availability, target versions and individual component licenses remain separate; inclusion is not universal interoperability. OSS CAD Suite pinned component manifestThe pinned OSS CAD Suite component list includes mcy.
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| Ibex | Yosys | SUPPORTEDValidity dates not established | Why are these connected?Ibex README describes Yosys area evaluation using its basic synthesis flow and latch-based register file. No area figures are republished. ibex pinned upstream documentationIbex README describes Yosys area evaluation using its basic synthesis flow and latch-based register file. No area figures are republished.
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| OSS CAD Suite | Project Peppercorn | SUPPORTEDValidity dates not established | Why are these connected?The official OSS CAD Suite manifest lists this component. Platform availability, target versions and individual component licenses remain separate; inclusion is not universal interoperability. OSS CAD Suite pinned component manifestThe pinned OSS CAD Suite component list includes Project Peppercorn.
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| OSS CAD Suite | Verilator | SUPPORTEDValidity dates not established | Why are these connected?Listed distribution component at the pinned README revision; availability depends on the upstream release and supported platform. Component license is not replaced by the distribution license. OSS CAD Suite READMEThe OSS CAD Suite README lists Verilator among its distribution components.
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| Ibex | Verilator | SUPPORTEDValidity dates not established | Why are these connected?Ibex Simple System simulation example requires Verilator; this is a specific example, not a guarantee for every Ibex configuration. ibex pinned upstream documentationIbex Simple System simulation example requires Verilator; this is a specific example, not a guarantee for every Ibex configuration.
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| OpenROAD Flow Scripts | OpenROAD | SUPPORTEDValidity dates not established | Why are these connected?ORFS documents OpenROAD use. Its README restricts guarantees to the latest matching OpenROAD/ORFS and warns that third-party versions are not guaranteed. OpenROAD Flow Scripts READMEThe ORFS installation documentation identifies OpenROAD among its provided flow applications.
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| OSS CAD Suite | nextpnr | SUPPORTEDValidity dates not established | Why are these connected?The official OSS CAD Suite manifest lists this component. Platform availability, target versions and individual component licenses remain separate; inclusion is not universal interoperability. OSS CAD Suite pinned component manifestThe pinned OSS CAD Suite component list includes nextpnr.
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| OSS CAD Suite | GHDL | SUPPORTEDValidity dates not established | Why are these connected?The official OSS CAD Suite manifest lists this component. Platform availability, target versions and individual component licenses remain separate; inclusion is not universal interoperability. OSS CAD Suite pinned component manifestThe pinned OSS CAD Suite component list includes GHDL.
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| OSS CAD Suite | Project IceStorm | SUPPORTEDValidity dates not established | Why are these connected?The official OSS CAD Suite manifest lists this component. Platform availability, target versions and individual component licenses remain separate; inclusion is not universal interoperability. OSS CAD Suite pinned component manifestThe pinned OSS CAD Suite component list includes Project IceStorm.
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| OSS CAD Suite | Yosys | SUPPORTEDValidity dates not established | Why are these connected?Listed distribution component at the pinned README revision; availability depends on the upstream release and supported platform. Component license is not replaced by the distribution license. OSS CAD Suite READMEThe OSS CAD Suite README lists Yosys among its distribution components.
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| OSS CAD Suite | Project Trellis | SUPPORTEDValidity dates not established | Why are these connected?The official OSS CAD Suite manifest lists this component. Platform availability, target versions and individual component licenses remain separate; inclusion is not universal interoperability. OSS CAD Suite pinned component manifestThe pinned OSS CAD Suite component list includes Project Trellis.
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| OSS CAD Suite | Bitwuzla | SUPPORTEDValidity dates not established | Why are these connected?The official OSS CAD Suite manifest lists this component. Platform availability, target versions and individual component licenses remain separate; inclusion is not universal interoperability. OSS CAD Suite pinned component manifestThe pinned OSS CAD Suite component list includes Bitwuzla.
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| cocotb | Verilator | SUPPORTEDValidity dates not established | Why are these connected?This cocotb source revision documents Verilator 5.036 or newer and SIM=verilator. This is upstream support with documented simulator-specific limitations. cocotb pinned upstream documentationThis cocotb source revision documents Verilator 5.036 or newer and SIM=verilator. This is upstream support with documented simulator-specific limitations.
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| OpenLane 2 | OpenROAD | SUPPORTEDValidity dates not established | Why are these connected?OpenLane describes OpenROAD among its infrastructure components. openlane2 pinned upstream documentationOpenLane describes OpenROAD among its infrastructure components.
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| OSS CAD Suite | openFPGALoader | SUPPORTEDValidity dates not established | Why are these connected?The official OSS CAD Suite manifest lists this component. Platform availability, target versions and individual component licenses remain separate; inclusion is not universal interoperability. OSS CAD Suite pinned component manifestThe pinned OSS CAD Suite component list includes openFPGALoader.
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| OpenROAD Flow Scripts | KLayout | SUPPORTEDValidity dates not established | Why are these connected?The described ORFS finishing stage uses KLayout for GDSII output and DRC/LVS checks. openroad pinned upstream documentationThe described ORFS finishing stage uses KLayout for GDSII output and DRC/LVS checks.
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| OpenLane 2 | KLayout | SUPPORTEDValidity dates not established | Why are these connected?OpenLane describes KLayout among its infrastructure components. openlane2 pinned upstream documentationOpenLane describes KLayout among its infrastructure components.
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| OSS CAD Suite | rIC3 | SUPPORTEDValidity dates not established | Why are these connected?The official OSS CAD Suite manifest lists this component. Platform availability, target versions and individual component licenses remain separate; inclusion is not universal interoperability. OSS CAD Suite pinned component manifestThe pinned OSS CAD Suite component list includes rIC3.
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| Ibex | FuseSoC | SUPPORTEDValidity dates not established | Why are these connected?The Simple System simulator build described here is driven by FuseSoC. ibex pinned upstream documentationThe Simple System simulator build described here is driven by FuseSoC.
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| OSS CAD Suite | Boolector | SUPPORTEDValidity dates not established | Why are these connected?The official OSS CAD Suite manifest lists this component. Platform availability, target versions and individual component licenses remain separate; inclusion is not universal interoperability. OSS CAD Suite pinned component manifestThe pinned OSS CAD Suite component list includes Boolector.
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| OSS CAD Suite | Project Apicula | SUPPORTEDValidity dates not established | Why are these connected?The official OSS CAD Suite manifest lists this component. Platform availability, target versions and individual component licenses remain separate; inclusion is not universal interoperability. OSS CAD Suite pinned component manifestThe pinned OSS CAD Suite component list includes Project Apicula.
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| OpenROAD Flow Scripts | Yosys | SUPPORTEDValidity dates not established | Why are these connected?Yosys is documented for the synthesis stage of OpenROAD Flow Scripts at this source revision. OpenROAD Flow Scripts READMEThe ORFS flow diagram assigns logic synthesis to Yosys.
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| OSS CAD Suite | Project Oxide | SUPPORTEDValidity dates not established | Why are these connected?The official OSS CAD Suite manifest lists this component. Platform availability, target versions and individual component licenses remain separate; inclusion is not universal interoperability. OSS CAD Suite pinned component manifestThe pinned OSS CAD Suite component list includes Project Oxide.
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| OSS CAD Suite | cocotb | SUPPORTEDValidity dates not established | Why are these connected?Listed distribution component at the pinned README revision; availability depends on the upstream release and supported platform. Component license is not replaced by the distribution license. OSS CAD Suite READMEThe OSS CAD Suite README lists cocotb among its distribution components.
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From Yosys · up to two relationship steps.
A path retains its original claims. Shared technology does not establish a supply contract.
Relationships may describe different dates. A path does not establish simultaneous activity. Bounded source-backed collection. Missing or filtered connections do not establish absence. Supported does not mean independently verified.