Unlike hardware, you can inject faults:

This level of control is impossible with physical hardware alone.

SimulIDE currently supports a subset of the STM32 family, most notably:

The "full" STM32 experience is thanks to open-source contributors like @jmarsden, @archcorsair, and the SimulIDE-Redux team. Recent updates (late 2025) include:

To get involved:

| Feature | SimulIDE | QEMU | Proteus | |---------|----------|------|---------| | Graphical circuit | Yes | No | Yes | | STM32F103 support | Basic | Full (SystemC) | Advanced | | Cycle accuracy | No | Yes | Partial | | Cost | Free | Free | $$$ | | Peripheral models | Limited | Medium | High |

The "Full" in our keyword is not just about simulation; it's about debugging. SimulIDE offers an integrated GDB server.