Answers Database

Foundation XVHDL: How to use READBACK in a VHDL design


Record #2574

Product Family:  Software

Product Line:  Metamor

Problem Title:
Foundation XVHDL:  How to use READBACK in a VHDL design


Problem Description:
Keywords: Foundation, VHDL, XVHDL, Metamor, Readback
Urgency:  Standard

General Description:

The information in this Solution Record documents how
to add the READBACK symbol within Foundation XVHDL


*Please note that the solutions vary slightly depending on
 whether the XACTStep6 or XACTStep M1 software is being used.


Solution 1:

XACTStep6  - Using READBACK
---------------------------

Please note that when instantiating READBACK in VHDL, the
following line must be added to the XDM.PRO file in the project
directory:

Options XNFMERGE -d <path_to_active>\VHDL\XLNX_LIB\<FAMILY>\

where <path_to_active> is the Foundation installation
directory (C:\ACTIVE by default), and <FAMILY> is either
XC4000, XC4000E, XC5200.

library IEEE;
use IEEE.std_logic_1164.all;

entity rdbktest is
    port (
	clk_in: in STD_LOGIC;
	trig_in: in STD_LOGIC;
	data_out: out STD_LOGIC;
	rip_out: out STD_LOGIC
    );
end rdbktest;

architecture rdbktest_arch of rdbktest is

component readback
   port (clk, trig: in std_logic; data, rip: out std_logic);
end component;

begin

U1:  readback port map (clk=>clk_in, trig=>trig_in,
			data=>data_out, rip=>rip_out);

end rdbktest_arch;



Solution 2:

Foundation F1.x - Using READBACK
----------------------------

--Foundation F1.3/F1.4 Example of instantiating a READBACK symbol

library IEEE;
use IEEE.std_logic_1164.all;

entity rdbktest is
    port (
	clk_in: in STD_LOGIC;
	trig_in: in STD_LOGIC;
	data_out: out STD_LOGIC;
	rip_out: out STD_LOGIC
	 );
end rdbktest;

architecture rdbktest_arch of rdbktest is

component RDCLK
   port (I: in std_logic);
end component;

component RDBK
   port (TRIG: in std_logic; DATA, RIP: out std_logic);
   end component;

begin

U1:  RDCLK port map (I=>clk_in);

U2:  RDBK port map (TRIG=>trig_in, DATA=>data_out, RIP=>rip_out);

end rdbktest_arch;









End of Record #2574