1 MHz Frequency operation in Stratix 1S10

Hello,

I am currently using " Altera Stratix 1S10 Development Kit".

I was successful in running a small application using uClinux by operating at 50 MHz.

But my requirement needs 1 MHz operation.

Can't I change the default settings in SOPC Builder to make my Nios work at 1 MHz. If it is possible, Can anyone help me in doing that?

Regards,

K V Naresh