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ISO 9001 certified


NIOS2, GNU

embOS for Altera NIOS2 was developed for and with NIOS II 14.0 Software Build Tools for Eclipse. It comes with an easy to use start project for the NIOS II Software Build Tools. Software development with JTAG debugger is possible.

 

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Resources and performance data

Memory usage
Kernel size (ROM) Approx. 3000 bytes
Kernel RAM usage TBD
RAM usage per task control block 32
RAM usage per resource semaphore 16
RAM usage per counting semaphore 8
RAM usage per mailbox 24
RAM usage per software timer 20
RAM usage event 0 bytes
Min. stack-size per task (RAM) 1200
Timing
Context switch time TBD
Interrupt latency time TBD
Kernel CPU usage/TICK TBD
Basic time unit (TICK) Typ. 1 ms, min. 20 µs (50 kHz interrupt frequency)
Features
Max. no. of tasks Unlimited (by available RAM only)
Max. no. of mailboxes Unlimited (by available RAM only)
Max. no. of semaphores Unlimited (by available RAM only)
Max. no. of software timers Unlimited (by available RAM only)
Max. no. of priorities Unlimited
Stack size idle task (RAM) 0 (no memory needed)
Nested interrupts Permitted
Task switches from within ISR Possible

Absolute values given above were measured with embOS release build on an NIOS II Cyclone 3 CPU running at 100MHz.