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/DFPDivide128_tb.v
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`timescale 1ns / 1ps |
// ============================================================================ |
// __ |
// \\__/ o\ (C) 2006-2022 Robert Finch, Waterloo |
// \ __ / All rights reserved. |
// \/_// robfinch<remove>@finitron.ca |
// || |
// |
// DFPDivide128_tb.v |
// - decimal floating point divider test bench |
// |
// BSD 3-Clause License |
// Redistribution and use in source and binary forms, with or without |
// modification, are permitted provided that the following conditions are met: |
// |
// 1. Redistributions of source code must retain the above copyright notice, this |
// list of conditions and the following disclaimer. |
// |
// 2. Redistributions in binary form must reproduce the above copyright notice, |
// this list of conditions and the following disclaimer in the documentation |
// and/or other materials provided with the distribution. |
// |
// 3. Neither the name of the copyright holder nor the names of its |
// contributors may be used to endorse or promote products derived from |
// this software without specific prior written permission. |
// |
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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. |
// |
// |
// ============================================================================ |
|
module DFPDivide128_tb(); |
parameter N=34; |
reg rst; |
reg clk; |
reg [15:0] adr; |
reg [127:0] a,b; |
wire [127:0] o, sqrto; |
reg [3:0] rm; |
wire done; |
|
integer n; |
reg [127:0] a1, b1; |
reg [39:0] sum_cc; |
|
integer outfile; |
|
initial begin |
rst = 1'b0; |
clk = 1'b0; |
adr = 0; |
a = $urandom(1); |
b = 1; |
#20 rst = 1; |
#50 rst = 0; |
#5000000 $fclose(outfile); |
#10 $finish; |
end |
|
always #5 |
clk = ~clk; |
|
genvar g; |
generate begin : gRand |
for (g = 0; g < 128; g = g + 4) begin |
always @(posedge clk) begin |
a1[g+3:g] <= $urandom() % 16; |
b1[g+3:g] <= $urandom() % 16; |
end |
end |
end |
endgenerate |
|
reg [15:0] count; |
always @(posedge clk) |
if (rst) begin |
adr <= 0; |
count <= 0; |
sum_cc = 0; |
end |
else |
begin |
if (adr==0) begin |
outfile = $fopen("d:/cores2022/rf6809/rtl/dfpu/test_bench/DFPDivide128_tvo.txt", "wb"); |
$fwrite(outfile, "rm ------ A ------ ------- B ------ - DUT Quotient - - Square root -\n"); |
sum_cc = 0; |
end |
count <= count + 1; |
if (count > 2000) |
count <= 1'd1; |
if (count==2) begin |
a <= a1; |
b <= b1; |
rm <= adr[15:13]; |
//ad <= memd[adr][63: 0]; |
//bd <= memd[adr][127:64]; |
end |
if (adr==1 && count==2) begin |
a <= 128'h25ffc000000000000000000000000000; // 1 |
b <= 128'h25ffc000000000000000000000000000; // 1 |
end |
if (adr==2 && count==2) begin |
a <= 128'h26000000000000000000000000000000; // 10 |
b <= 128'h26000000000000000000000000000000; // 10 |
end |
if (adr==3 && count==2) begin |
a <= 128'h26004000000000000000000000000000; // 100 |
b <= 128'h26000000000000000000000000000000; // 10 |
end |
if (adr==4 && count==2) begin |
a <= 128'h26008000000000000000000000000000; // 1000 |
a <= 128'h26004000000000000000000000000000; // 100 |
end |
if (adr==5 && count==2) begin |
a <= 128'h2601934B9C0C00000000000000000000; // 12345678 |
b <= 128'h26000000000000000000000000000000; // 10 |
end |
if (count > 2000) begin |
sum_cc = sum_cc + u6.u1.u2.clkcnt; |
$fwrite(outfile, "%h\t%h\t%h\t%h\t%h\t%d\t%f\n", rm, a, b, o, sqrto, u6.u1.u2.clkcnt, $itor(sum_cc) / $itor(adr)); |
adr <= adr + 1; |
end |
end |
|
//fpMulnr #(64) u1 (clk, 1'b1, a, b, o, rm);//, sign_exe, inf, overflow, underflow); |
DFPDivide128nr #(.N(N)) u6 ( |
.rst(rst), |
.clk(clk), |
.ce(1'b1), |
.ld(count==3), |
.op(1'b0), |
.a(a), |
.b(b), |
.o(o), |
.rm(rm), |
.done(done), |
.sign_exe(), |
.inf(), |
.overflow(), |
.underflow() |
); |
|
//DFPSqrt128nr #(.N(N)) u1 (rst, clk, 1'b1, count==3, a, sqrto, rm);//, sign_exe, inf, overflow, underflow); |
|
endmodule |