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8   Limitations

8.1   Limitations of the Simulated Model

• Not all 3DNow! instructions are implemented (not an issue for Intel-based targets).
• Legacy (x87) floating point is not always bit-by-bit compatible with the simulated target processor.
• Floating point approximation operations are always computed with full precision.
• Multi-machine configurations with graphical consoles do not work on Windows hosts since it uses SDL that only supports one window.
• For 32-bit targets, the maximum supported RAM size is 3840 MB. There is no such limitation in the 64-bit targets.

8.2   Other Limitations

• The SimicsFS file system is only read-only in Linux 2.4.x.

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