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test_top.sv
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test_top.sv
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/////////////////////////////////////////////////////////////////////
//// ////
//// FPU ////
//// Floating Point Unit (Single precision) ////
//// ////
//// TEST BENCH ////
//// ////
//// Author: Rudolf Usselmann ////
//// [email protected] ////
//// ////
/////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2000 Rudolf Usselmann ////
//// [email protected] ////
//// ////
//// 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 SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY ////
//// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED ////
//// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS ////
//// FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE AUTHOR ////
//// OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, ////
//// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES ////
//// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE ////
//// GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR ////
//// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF ////
//// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ////
//// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT ////
//// OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE ////
//// POSSIBILITY OF SUCH DAMAGE. ////
//// ////
/////////////////////////////////////////////////////////////////////
`timescale 1ns / 100ps
import definitions::*;
module test;
/************************************************************************************/
//Built in real for verification of code
//real result;
//shortreal opa_real;
//shortreal opb_real;
/************************************************************************************/
reg clk;
reg reset;
fpu_interface fpu_if(clk,reset);
reg test_exc;
reg show_prog;
event error_event;
//
integer error, vcount;
fpu u0(fpu_if);
always #10 clk = ~clk;
initial
begin
clk = 0;
reset = 0;
#5 reset = 1;
#5 reset = 0;
end
initial begin
repeat(1) begin
@(posedge clk);
//**************************************************************************
fpu_if.fpu_i.rmode = round_up;
fpu_if.fpu_i.fpu_op = MULT;
fpu_if.fpu_i.opa = 32'b 00111111100110011001100110011011;
fpu_if.fpu_i.opb = 32'b 00111111110110011001100110011011;
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
$display("reset = %b", fpu_if.reset);
@(posedge clk);
//**************************************************************************
fpu_if.fpu_i.rmode = round_up;
fpu_if.fpu_i.fpu_op = ADD;
fpu_if.fpu_i.opa = 32'b 01000001101110011001100110011010;
fpu_if.fpu_i.opb = 32'b 01000001101110011001100110011010;
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
$display("reset = %b", fpu_if.reset);
@(posedge clk);
//**************************************************************************
fpu_if.fpu_i.rmode = round_down;
fpu_if.fpu_i.fpu_op = DIV;
fpu_if.fpu_i.opa = 32'b 00111111100000000000001000000000;
fpu_if.fpu_i.opb = 32'b 01000000011011001100110011001101;
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
$display("reset = %b", fpu_if.reset);
@(posedge clk);
//**************************************************************************
fpu_if.fpu_i.rmode = round_down;
fpu_if.fpu_i.fpu_op = MULT;
fpu_if.fpu_i.opa = 32'b 01000000000000000000001000000000;
fpu_if.fpu_i.opb = 32'b 01000000000000000000000010000000;
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
$display("reset = %b", fpu_if.reset);
//**************************************************************************
@(posedge clk);
//**************************************************************************
fpu_if.fpu_i.rmode = round_down;
fpu_if.fpu_i.fpu_op = ADD;
fpu_if.fpu_i.opa = 32'b 01000000000000000000001000000000;
fpu_if.fpu_i.opb = 32'b 01000000000000000000000010000000;
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
$display("reset = %b", fpu_if.reset);
//**************************************************************************
@(posedge clk);
//**************************************************************************
fpu_if.fpu_i.rmode = round_down;
fpu_if.fpu_i.fpu_op = SUB;
fpu_if.fpu_i.opa = 32'b 01000000000000000000001000000000;
fpu_if.fpu_i.opb = 32'b 01000000000000000000000010000000;
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
$display("reset = %b", fpu_if.reset);
//**************************************************************************
@(posedge clk);
//**************************************************************************
fpu_if.fpu_i.rmode = round_down;
fpu_if.fpu_i.fpu_op = DIV;
fpu_if.fpu_i.opa = 32'b 01000000000000000000001000000000;
fpu_if.fpu_i.opb = 32'b 01000000000000000000000010000000;
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
$display("reset = %b", fpu_if.reset);
//**************************************************************************
@(posedge clk);
//**************************************************************************
fpu_if.fpu_i.rmode = round_down;
fpu_if.fpu_i.fpu_op = DIV;
fpu_if.fpu_i.opa = 32'b 01000000000000000000001000000000;
fpu_if.fpu_i.opb = 32'b 01000000000000000000000010000000;
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
$display("reset = %b", fpu_if.reset);
//**************************************************************************
@(posedge clk);
//**************************************************************************
fpu_if.fpu_i.rmode = round_down;
fpu_if.fpu_i.fpu_op = DIV;
fpu_if.fpu_i.opa = 32'b 01000000000000000000001000000000;
fpu_if.fpu_i.opb = 32'b 01000000000000000000000010000000;
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
$display("reset = %b", fpu_if.reset);
//**************************************************************************
@(posedge clk);
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
@(posedge clk);
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
@(posedge clk);
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
@(posedge clk);
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
@(posedge clk);
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
@(posedge clk);
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
@(posedge clk);
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
@(posedge clk);
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
@(posedge clk);
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
@(posedge clk);
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
@(posedge clk);
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
@(posedge clk);
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
@(posedge clk);
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
@(posedge clk);
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
@(posedge clk);
$display("\n fpu_i.opa: %f,fpu_i.opb: %f,out_hex : %h out_float: %f",$bitstoshortreal(fpu_if.fpu_i.opa),$bitstoshortreal(fpu_if.fpu_i.opb),fpu_if.out,$bitstoshortreal(fpu_if.out));
end
$finish;
end
endmodule