How to design a coprocesser?

[Altera_Forum]

These days, I want to design a coprocesser based of DSP Builder, but I have no ideas about it . Must the coprocesser be designed to realize a function? Or I can just build the hardware,and then use it to realize a function to verify its success? I'm puzzled that which is the key job between the function and the hardware struction. Who can tell me ？thanks！

[Altera_Forum]

I am having a problem decoding your question. You can use DSP Builder to realize any specific or generic function that you desire (within reason). IF you design a specific function, then the realized hardware will do exactly what you design it to do. 

 If you design a general purpose machine, and you integrate intot hat machine the ability to load registers to slect different functions based on what you load into thse registers, you can design a "general purpose execution machine" and realize whatever function you architect it to achieve.  Does this make sense, or should we go around another time.  Advise.