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[sridar]

Dear folks,

I am using the following code for multiplication, but it doesn't infer any logical resources in Xilinx FPGA. I am using ISE 9.2. Output c is grounded.

entity multiplication is

Generic (L:integer:=3);
Port ( a,b : in integer;
c : out integer);

end multiplication;

architecture Behavioral of multiplication is

constant mult : integer:=(2**(L-1));

begin

c <= a*mult;

end Behavioral;

i want to use L as generic. so please guide me to sort this out.

thnx

[jeppe]

Well - I'm not sure about the grounded output

If you want's full advantage of the constant multiplication must you consider the generic part.

The most informative information can be found at this great site:
http://tima-cmp.imag.fr/~guyot/Cours...lish/MulCS.htm

Jeppe