Mike,

thanks for your replay

how do I assigned the port names to pins?
I searched for demo vhdl file in xilinx I couldn't find it

thanks

Andre







Mike Harrison wrote:

>On Wed, 23 Nov 2005 14:46:29 -0800, you wrote:
>
>  
>
>>Hi to all,
>>
>>I am having hard time to make my Xilinx demo board working and
>>I am new to VHDL.  I was wondering if some one can check my
>>test code. All I am trying to do is to turn  4 LEDs on and it doesn't work
>>any help?
>>
>>library IEEE;
>>use IEEE.STD_LOGIC_1164.ALL;
>>use IEEE.STD_LOGIC_ARITH.ALL;
>>use IEEE.STD_LOGIC_UNSIGNED.ALL;
>>
>>entity test is
>>    port( LED_0,LED_1,LED_2,LED_3: OUT STD_LOGIC);
>>end test;
>>
>>architecture behavior of test is
>>    begin
>>    LED_0 <= '0';
>>    LED_1 <= '0';
>>    LED_2 <= '0';
>>    LED_3 <= '0';
>>end behavior;
>>
>>
>>thanks in advance.
>>
>>Andre
>>    
>>
>
>Have you assigned the port names to pins, and set the I/O standard, in the UCF file ? 
>If all else fails, tweak a copy of the demo app for the board - easier to start with something
>working and modify it...
>
>  
>
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