Virtex: Foundation 3.1 Error

Dear all  I am using Xilinx Foundation 3.1i to implement my design into XSV board and debug using hardware  debugger.  I am trying to instantiate readback symbol in my design using this file : library IEEE;  use IEEE.std_logic_1164.all;  library virtex;  use virtex.components.all; entity rdbk is  port (  rt, clk : in STD_LOGIC;  rd, rip_p : out STD_LOGIC  );  end rdbk; architecture xilinx of rdbk is begin U0: RDBK port map (TRIG => rt, DATA => rd, RIP =>  rip_p);  U1: RDCLK port map (I => clk); end xilinx; But I found these errors at implementation steps : Error L-3/C0 : #0 Error:  :/Xilinx/active/projects/and3_gat/readback.vhd line  -3 Library logical name VIRTEX is not mapped to a  host directory. (VSS-1071) (FPGA-hci-hdlc-unknown)   Error L4/C0 : #0 Error:  E:/Xilinx/active/projects/and3_gat/readback.vhd line  4 No selected element named COMPONENTS is defined  for this prefix. (VSS-573)   Error L13/C0 : #0 Error:  E:/Xilinx/active/projects/and3_gat/readback.vhd line  13 The intermediate file for entity RDBK is not in  the library bound to WORK. (VSS-1084) What do they mean ? I really apreciate the feedback  from all of you. Regards Nyoman Yani

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Nyoman Yani H
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