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- The original repository is located on my own git-server at [https://git.goodcleanfun.de/tmeissner/formal_hw_verification](https://git.goodcleanfun.de/tmeissner/formal_hw_verification)
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- It is mirrored to github with every push, so both should be in sync.
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- # formal_verification
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- Tests and examples of using formal verification to check correctness of digital hardware designs. All tests are done with SymbiYosys, a front-end for formal verification flows based on [Yosys](https://github.com/YosysHQ). Some examples use the VHDL/SystemVerilog frontend plugin by Verific which isn't free SW and not included in the free Yosys version. See on the [Symbiotic EDA website](https://www.symbioticeda.com) for more information.
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- ### alu
- A simple ALU design in VHDL, together with a formal testbench written in SystemVerilog. The testbench contains various simple SVA properties used by assert & cover directives which are proved with the SymbiYosys tool.
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- ### counter
- A simple counter design in VHDL, together with a formal testbench written in SystemVerilog. The testbench contains various simple SVA properties used by assert & cover directives which are proved with the SymbiYosys tool.
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- ### dlatch
- A simple test design which generates the `Unsupported cell type $dlatchsr` error using with Verific plugin.
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- ### vai_reg
- A simple register file with VAI (valid-accept-interface) which serves as test design to try formal verification of FSMs.
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