RTX tasks

The manual's always a good place to look for information like this.

http://www.keil.com/support/man/docs/rlarm/rlarm_ar_schedopt.htm

Thank you, I sure now.

Must I change anything in RTX_Conf_CM.c for a pre-emptive scheduling?
It is written in this file : #define OS_ROBIN 1

Must I #define something for a Pre-emptive scheduling?

Thanks.

Please confirm that I only must set :
#define OS_ROBIN 0
(for replacement of #define OS_ROBIN 1)
for use the pre-emptive scheduling.

If you go to the link I gave, it explains the different modes and the terminology of the Keil RTX.

It says at the bottom of that page:

"The default scheduling option for RTX is Round-Robin Pre-emptive."

So ... If you don't want the round-robin operation, you must disable it.

So, for disable round-robin operation, I must set
#define OS_ROBIN 0
in the TX_Conf_CM.c?

I would change the setting in RTX_Config.C

I am not familar with the file TX_Conf_CM.c