How to know if the processor is in EL0 state on armv8?

Hi Fellows, I want to determine in code, if the processor is in EL0 mode or not. I read CurrentEL register to do this but if my code is running from EL0, it throws an exception since we can't access...
How to know if the processor is in EL0 state on armv8?

Hi Fellows, I want to determine in code, if the processor is in EL0 mode or not. I read CurrentEL register to do this but if my code is running from EL0, it throws an exception since we can't access...
How to know if a RAM is compatible with an architecture or a processor?

I don't have much experience in building an embedded system from 0. I want to ask a general question as showed in the title through an example. I choose Cortex-A9 (ARMv7-Profile A architecture) as...
How to know if a RAM is compatible with an architecture or a processor?

I don't have much experience in building an embedded system from 0. I want to ask a general question as showed in the title through an example. I choose Cortex-A9 (ARMv7-Profile A architecture) as...
I want to know priority of Cortex-M3 processor

which interrrupt priority is higher? systick vs IRQ(external timer) because In my case externl timer is higher then systick. I saw that during processing in systick ISR, but suddenly pc jump to...