.. _tool_compatibility:

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Tool Compatibility
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This section presents an overview of known issues with different simulators.

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GHDL
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* AXI-Stream: GHDL crashes due to a memory allocation error when instantiating an AXI-Stream VVC.

+-------------------------------+-------------------------------+---------------------------------------------------------------+
| Detected in version           | Fixed in                      | Notes                                                         |
+===============================+===============================+===============================================================+
| | GHDL 5.0.0-dev (4.0.0.r24.\ |                               | Workaround in UVVM v2 2024.07.03                              |
|   g14b411c57)                 |                               |                                                               |
| | UVVM v2 2024.03.08          |                               |                                                               |        
+-------------------------------+-------------------------------+---------------------------------------------------------------+

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Modelsim / Questa
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* Functional Coverage: Using sample_coverage() with transition bins can cause a false match.

+-------------------------------+-------------------------------+---------------------------------------------------------------+
| Detected in version           | Fixed in                      | Notes                                                         |
+===============================+===============================+===============================================================+
| Modelsim PE 2023.1            | Modelsim PE 2024.2            | Workaround in UVVM v2 2024.03.08                              |
+-------------------------------+-------------------------------+---------------------------------------------------------------+

* Questa Sim version 19.2 and Modelsim version 19.2 have known bugs that might prevent UVVM from working properly.

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Riviera-PRO
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* .