Kirti ------->Normaly we come across 2 modes of operation , user mode & kernel mode, Is > > there any OS which provides > > only one mode of operation ??? I think DOS doesn't support kernel mode as a > > seperate mode of operation, does any > > OS for Embeded has such fearures ?? If anybody knows it then let me know > > it.
Pallav----------> All the RTOS's have only one mode of operation - "kernel > mode". Eg. VxWorks.Also, I think you could say that DOS only > provides "Kernel Mode", since User programs are allowed direct > access to all resources. > > Do u mean that application running on Vxworks will be running in kernel mode only ? But then how do they handle protection of hardware ? If we are not differentiating bet'n kernel mode & user mode then lot of protection realted things comes into picture. Actually we are concentrating on developing a OS which will respond like real time responce, but its not hard real time , naturally its unix based OS , There comes the issue of giving dual mode structure. Anybody can guide me in this matter ??? regards Kirti ********************************************************* Disclaimer This message (including any attachments) contains confidential information intended for a specific individual and purpose, and is protected by law. If you are not the intended recipient, you should delete this message and are hereby notified that any disclosure, copying, or distribution of this message, or the taking of any action based on it, is strictly prohibited. ********************************************************* Visit us at http://www.mahindrabt.com -- To unsubscribe from this list, send a message to [EMAIL PROTECTED] with the command "unsubscribe linux-embedded" in the message body. For more information, see <http://waste.org/mail/linux-embedded>.
