Does the Nois ii processor support DVFS(dynamic frequency and voltage scaling)?

Thanks for the reply, I ll look into your paper and ask more if required,

Can you tell me if I can control the PLLs on my DE2 board( Cyclone II FPGA) through software to switch between different frequencies. If yes, how can I measure the switch-over delay ( Time it takes to switch from a frequency to other) and meanwhile to keep the state of the processor harmless, we need to stall the CPU ?

I have Implemented already an H.263 encoder on a NIOS ii based system and now I want to invlove these frequency switchings and check the performance variations between the Implementation (without DFS) and with DFS. I am also interested in Power Consumption measurements of the NIOS ii based systems. I have never done any power consumption measurements before.

SO i look forward to suggestions from your side for up mentioned work. Some ideas to set my action plan further. I think we cant switch between different voltage? Is there FPGA device by ALTERA supporting voltage switching of designed circuits??

Thank you very much.