Warm reset of NIOS under IDE

Hi,

I am trying to make a warm reset with NIOS II CPU. I just make an asm jump to the _start function. If I do this, I loose the control of IDE - I couldn't debug the source code any more. I just thought my program would start agian and would run to main program to my first breakpoint.

Did anybody know what is going on there?

Thanks for help,

Holger