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ARM7/9/XScale & Cortex-A/R, emIDE

embOS for ARM7/9/XScale & Cortex-A/R was developed for and with emIDE and supports all memory models offered by this compiler.

It comes with easy to use start projects. Initilization code for different ARM7 / ARM9 starter boards is included.

Software development with with JTAG tools like J-Link is possible.


Pricing Trial download Notification Subscribe to embOS software notification Release Notes


Resources and performance data

Memory usage
Kernel size (ROM) Approx. 1700 bytes
Kernel RAM usage 51 bytes
RAM usage per task control block 48 bytes
RAM usage per resource semaphore 16 bytes
RAM usage per counting semaphore 8 bytes
RAM usage per mailbox 24 bytes
RAM usage per software timer 20 bytes
RAM usage event 0 bytes
Min. stack-size per task (RAM) 64 bytes
Context switch time 1.9 µs
Interrupt latency time Zero
Kernel CPU usage/TICK Less than .1% of total calculation time at 1000 Interrupts/second (1ms TICK)
Basic time unit (TICK) Typ. 1 ms, min. 20 µs (50 kHz interrupt frequency)
Max. no. of tasks Unlimited (by available RAM only)
Max. no. of mailboxes Unlimited (by available RAM only)
Max. no. of semaphores (resource/binary/counting) 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 AT91SAM9263 CPU running at 200MHz.

Additional information

emIDE website for additional compiler info / support

Board support packages

embOS comes with ready to go start projects and support packages for various ARM7 / ARM9 CPUs and starterboards.

CPU Eval board
Altera Cyclone V SOC Altera SOCrates eval board
Renesas R7S72100 Renesas RSKRZA1