Interrupts: privileged vs. non-privileged modes

[pavankukkala]

What is the differenece between priveleged and non priveleged modes?

 

[KrisBlueNZ]

Which architecture?

 

[pavankukkala]

In case of LPC21XX family which follows a RISC architecture

 

[KrisBlueNZ]

I'm not familiar with that architecture. I suggest you do what I would do: get all the documentation together, and search through it for occurrences of "privileged". That will give you a quick overview of the behaviours that are affected by whether the core is running in privileged mode or not.

 

[pavankukkala]

I didn't get you, I will explain you clearly.
when I am reading the ARM Architecture I came across seven modes like user mode, IRQ, FIQ, undefined mode, abort mode,system mode n supervisor mode .among these modes,user mode is non privileged mode and all others are privileged mode . can you say me know exactly

 

[Gryd3]

I didn't get you, I will explain you clearly.
when I am reading the ARM Architecture I came across seven modes like user mode, IRQ, FIQ, undefined mode, abort mode,system mode n supervisor mode .among these modes,user mode is non privileged mode and all others are privileged mode . can you say me know exactly

Elevated operating modes like privileged mode will typically allow access to restricted functions or memory. I can't give you exact details, and Kris suggested you read through the documentation and look for every instance of the work 'privileged', as it will most likely be within the same paragraph of explaining what the mode allows you to do.
If the document is a web-page or a PDF. Press Ctrl+F to begin searching for a word, and type in privileged. It will highlight and auto-scroll to each instance of the word. Do a quick read of each section that the word shows up and you will very likely find your answer.
If I could give a more exact answer I would, but I am not familiar enough with that architecture either.