16 Bit - 8 point FFT

Hey guys

I designed my own FFT code which has 16 - 8 bit inputs ( real and imaginary)

and 16 - 8 bit outputs (real and imaginary) and a clock.

i want to implement this design using NIOSII ....

I am not able to come up with an interface to map it to the 32 Bit Avalon Bus. Can someone help me , and list the steps that i should follow .

My input is like>>> 64 bits real and 64 bits Imaginary and so is my output...!!