RTEMS Ada User's Guide
Since memory is a critical resource in many real-time embedded systems, RTEMS was specifically designed to allow unused managers to be excluded from the run-time environment. This allows the application designer the flexibility to tailor RTEMS to most efficiently meet system requirements while still satisfying even the most stringent memory constraints. As a result, the size of the RTEMS executive is application dependent. A worksheet is provided in the Memory Requirements chapter of the Applications Supplement document for a specific target processor. The worksheet is used to calculate the memory requirements of a custom RTEMS run-time environment. The following managers may be optionally excluded:
RTEMS utilizes memory for both code and data space. Although RTEMS' data space must be in RAM, its code space can be located in either ROM or RAM.
RTEMS Ada User's Guide
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