Subversion Repositories or1k

//////////////////////////////////////////////////////////////////////
////                                                              ////
////  Testbench for the system                                    ////
////                                                              ////
////                                                              ////
////  Description                                                 ////
////  Resets the system, applies the clk and moves the TAP        ////
////  around some states. If you have loaded a program in the     ////
////  ZBT RAM model, it will run                                  ////
////                                                              ////
////  To Do:                                                      ////
////   - nothing really                                           ////
////                                                              ////
////  Author(s):                                                  ////
////      - Javier Castillo, jcastillo@opensocdesign.com          ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2004 OpenCores                                 ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file is free software; you can redistribute it   ////
//// and/or modify it under the terms of the GNU Lesser General   ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source is distributed in the hope that it will be       ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////
//// PURPOSE.  See the GNU Lesser General Public License for more ////
//// details.                                                     ////
////                                                              ////
//// You should have received a copy of the GNU Lesser General    ////
//// Public License along with this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
//
// CVS Revision History
//
// $Log: not supported by cvs2svn $
 
 
// synopsys translate_off
`include "timescale.v"
// synopsys translate_on
 
`include "or1200_defines.v"
 
module rc203_test;
 
   reg    clk_i;
   reg    rst_i;
 
 
   wire   [19:0] sram_address;
   wire   [3:0] sram_nBW;
   wire   sram_nRW;
   wire   sram_nCS;
   wire   sram_clk;
   tri    [31:0] sram_data;
 
   wire   uart_stx;
   reg    uart_srx;
 
 
   reg    jtag_tdi;
   reg    jtag_tms;
   reg    jtag_tck;
   wire   jtag_tdo;
 
 
soc soc(
   .clk(clk_i),
   .reset(rst_i),
   .sram_nRW(sram_nRW),
   .sram_nBW(sram_nBW),
   .sram_address(sram_address),
   .sram_nCS(sram_nCS),
   .sram_data(sram_data),
   .sram_clk(sram_clk),
   .uart_srx(uart_srx),
   .uart_stx(uart_stx),
   .jtag_tdi(jtag_tdi),
   .jtag_tms(jtag_tms),
   .jtag_tck(jtag_tck),
   .jtag_tdo(jtag_tdo)
  );
 
//
// If you load a hex file in the RAM model 
// OR1200 will boot from here
//
zbtram zbtram(
   .clk(sram_clk),
   .nBW(sram_nBW),
   .address(sram_address),
   .data(sram_data),
   .nCS(sram_nCS),
   .nRW(sram_nRW)
   );
 
   initial
   begin
     $display("Beggining");
     uart_srx=1;
     jtag_tck=1;
     jtag_tdi=0;
     jtag_tms=0;
     clk_i='b1;
     rst_i='b1;
     rst_i=#101'b0;
     #100;
     //JTAG IR DEBUG
     jtag_tms=1;
     #100;
     jtag_tck=0;
     #100;
     jtag_tck=1;
     #100;
     jtag_tck=0;
     #100;
     jtag_tck=1;
     #100;
     jtag_tck=0;
     #100;
     jtag_tck=1;
     #100;
     jtag_tck=0;
     #100;
     jtag_tck=1;
     #100;
     jtag_tck=0;
     #100;
     //TAP reseted
     jtag_tms=0;
     jtag_tck=1; 
     #100; 
     jtag_tck=0;
     #100;
     //RUN state
     jtag_tms=1;
     jtag_tck=1;
     #100;
     jtag_tck=0; 
     #100; 
     jtag_tck=1;
     #100;
     jtag_tck=0; 
     #100; 
     //SelectIR
     jtag_tms=0;
     jtag_tck=1;
     #100;
     jtag_tck=0; 
     #100; 
     jtag_tck=1;
     #100;
     jtag_tck=0; 
     #100; 
     //Shift IR
     jtag_tms=0;
     jtag_tck=1;
     jtag_tdi=0;
     #100;
     jtag_tck=0; 
     #100; 
     jtag_tck=1;
     #100;
     jtag_tck=0; 
     #100; 
     jtag_tck=1;
     #100;
     jtag_tck=0; 
     #100; 
     jtag_tck=1;
     jtag_tdi=1;
     jtag_tms=1;
     #100;
     jtag_tck=0; 
     #100; 
     //Exit
     jtag_tck=1;
     jtag_tms=1;
     #100
     jtag_tck=0; 
     #100; 
     jtag_tck=1;
     jtag_tms=0;
     #100;
     jtag_tck=0; 
     #100; 
     jtag_tck=1;
     #100;
   end 
 
always #5 clk_i=!clk_i;
 
 
 
endmodule