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==== System Resources Used By FreeRTOS ====

=== Memory ===
The memory used by FreeRTOS will vary depending on configuration, as many features can be removed and buffers resized. 
See the [[resources:tools-software:freertos:rtos-user-guide:appendix-a-freertos-performance:adsp-21569-sharc-core-benchmark-data|Space Benchmark Figures]] for an indication of space used in various configurations. 

=== Interrupts ===
FreeRTOS makes use of a software interrupt for context switching, and a timer interrupt for the tick mechanism

^Platform ^Context Switch Interrupt ^Timer ^
| ARM | SWI | System Timer 0 |
| Blackfin | IVG14 (Interrupt #14) | TMR  (Interrupt #6)|
| SHARC | Core User Software Interrupt 3 | TMZLI | 

Note: An alternative timer can be used by defining configTIMER_INTERRUPT.

Note: On ADSP-2158x/ADSP-SC58x and ADSP-2157x/ADSP-SC57x where anomaly 20-00-0081 applies, then system interrupts SOFT6 (Core1) and SOFT7 (Core2) are used instead of the core interrupt.

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