If you want to get any given frequency from a source you can use DDS (Direct Digital Synthisis.) That is if you dont have a PLL already. I assume that you are using Altera parts as you mention AHDL if you have a cyclone then there should be some PLLs on board so problem solved.
DDS has the problem of phase jitter these numbers would have some serious jitter problems I think.
there is a pdf fine from st micro-electronics. That is an excellent note on how to divide clock with 50% duty cycle and you can divide with odd numbers also. search net for pdf file st clock divider. this is patented one.
there is a pdf fine from st micro-electronics. That is an excellent note on how to divide clock with 50% duty cycle and you can divide with odd numbers also. search net for pdf file st clock divider. this is patented one.