I have a VHDL code to implement a arithmetic modular multplier. my code gets synthesized correctly without errors, but with Artix 7 i have 4800 warnings but with Virtex 5 only 700 warnings I use ISE 14. can you please explain me why this difference between this two device ? thanks
look for the warnings and see the difference - just simple!
You have to select the third checkbox in the second DropDown List for the Artix 7. This solvs the problem with your warnings. ;-)