diff options
Diffstat (limited to 'src/tb/tb_factor.v')
| -rw-r--r-- | src/tb/tb_factor.v | 228 |
1 files changed, 178 insertions, 50 deletions
diff --git a/src/tb/tb_factor.v b/src/tb/tb_factor.v index 946883c..b53f7d8 100644 --- a/src/tb/tb_factor.v +++ b/src/tb/tb_factor.v @@ -49,6 +49,7 @@ module tb_factor; // Parameters
//
localparam NUM_WORDS_384 = 384 / 32;
+ localparam NUM_WORDS_512 = 512 / 32;
//
// Clock (100 MHz)
@@ -146,6 +147,7 @@ module tb_factor; #100;
test_factor_384(N_384);
+ test_factor_512(N_512);
end
@@ -154,14 +156,16 @@ module tb_factor; // Test Tasks
//
- task test_factor_384; + task test_factor_384;
+ // input [383:0] n;
reg [383:0] f;
reg [383:0] factor;
- integer i; + integer i;
+ // begin
-
- calc_factor_384(n, f); // calculate factor on-the-fly
+ //
+ calc_factor_384(n, f); // calculate factor on-the-fly
// make sure, that the value matches the one saved in the include file
if (f !== FACTOR_384) begin
@@ -170,8 +174,7 @@ module tb_factor; end
- n_num_words = 4'd11; // set number of words -
+ n_num_words = 4'd11; // set number of words
write_memory_384(n); // fill memory
ena = 1; // start operation @@ -180,8 +183,52 @@ module tb_factor; while (!rdy) #10; // wait for operation to complete
read_memory_384(factor); // get result from memory +
+ $display(" calculated: %x", factor); // display result
+ $display(" expected: %x", f); //
- $display(" calculated: %x", factor); //
+ // check calculated value
+ if (f === factor) begin + $display(" OK");
+ $display("SUCCESS: Test passed."); + end else begin
+ $display(" ERROR");
+ $display("FAILURE: Test not passed.");
+ end
+ //
+ end + //
+ endtask +
+ task test_factor_512;
+ // + input [511:0] n;
+ reg [511:0] f;
+ reg [511:0] factor;
+ integer i;
+ // + begin
+ //
+ calc_factor_512(n, f); // calculate factor on-the-fly
+
+ // make sure, that the value matches the one saved in the include file
+ if (f !== FACTOR_512) begin
+ $display("ERROR: Calculated factor value differs from the one in the test vector!");
+ $finish;
+ end
+
+
+ n_num_words = 4'd15; // set number of words
+ write_memory_512(n); // fill memory
+ + ena = 1; // start operation + #10; //
+ ena = 0; // clear flag
+ + while (!rdy) #10; // wait for operation to complete
+ read_memory_512(factor); // get result from memory +
+ $display(" calculated: %x", factor); // display result
$display(" expected: %x", f); //
// check calculated value
@@ -192,92 +239,173 @@ module tb_factor; $display(" ERROR");
$display("FAILURE: Test not passed.");
end
-
+ //
end -
+ //
endtask + //
+ // write_memory_384
+ //
task write_memory_384;
-
+ //
input [383:0] n;
-
reg [383:0] n_shreg;
-
+ //
begin + //
+ tb_n_wren = 1; // start filling memories + n_shreg = n; // preload shift register
+ // + for (w=0; w<NUM_WORDS_512; w=w+1) begin // write all words + tb_n_addr = w[3:0]; // set address + tb_n_data = n_shreg[31:0]; // set data + n_shreg = {{32{1'bX}}, n_shreg[511:32]}; // update shift register + #10; // wait for 1 clock tick + end + // + tb_n_addr = {4{1'bX}}; // wipe addresses + tb_n_data = {32{1'bX}}; // wipe data + tb_n_wren = 0; // stop filling memory
+ //
+ end
+ //
+ endtask - tb_n_wren = 1; // start filling memories - - n_shreg = n; //
- - for (w=0; w<NUM_WORDS_384; w=w+1) begin // write all words - - tb_n_addr = w[3:0]; // set addresses - - tb_n_data = n_shreg[31:0]; //
- - n_shreg = {{32{1'bX}}, n_shreg[383:32]}; //
- - #10; // wait for 1 clock tick - +
+ //
+ // write_memory_512
+ //
+ task write_memory_512;
+ //
+ input [511:0] n;
+ reg [511:0] n_shreg;
+ //
+ begin + //
+ tb_n_wren = 1; // start filling memories + n_shreg = n; // preload shift register
+ // + for (w=0; w<NUM_WORDS_512; w=w+1) begin // write all words + tb_n_addr = w[3:0]; // set address + tb_n_data = n_shreg[31:0]; // set data + n_shreg = {{32{1'bX}}, n_shreg[511:32]}; // update shift register + #10; // wait for 1 clock tick end - - tb_n_addr = {4{1'bX}}; // wipe addresses - - tb_n_data = {32{1'bX}}; //
- - tb_n_wren = 0; // stop filling memories
-
+ // + tb_n_addr = {4{1'bX}}; // wipe addresses + tb_n_data = {32{1'bX}}; // wipe data + tb_n_wren = 0; // stop filling memory
+ //
end
-
+ //
endtask - +
+ //
+ // read_memory_384
+ //
task read_memory_384;
-
+ //
output [383:0] f;
reg [383:0] f_shreg;
-
+ //
begin
-
- // read result word-by-word
- for (w=0; w<NUM_WORDS_384; w=w+1) begin + //
+ for (w=0; w<NUM_WORDS_384; w=w+1) begin // read result word-by-word tb_f_addr = w[3:0]; // set address #10; // wait for 1 clock tick f_shreg = {tb_f_data, f_shreg[383:32]}; // store data word end
-
+ //
tb_f_addr = {4{1'bX}}; // wipe address
f = f_shreg; // return
-
+ //
end
-
+ //
endtask - task calc_factor_384;
+ //
+ // read_memory_512
+ //
+ task read_memory_512;
+ //
+ output [511:0] f;
+ reg [511:0] f_shreg;
+ //
+ begin
+ //
+ for (w=0; w<NUM_WORDS_512; w=w+1) begin // read result word-by-word + tb_f_addr = w[3:0]; // set address + #10; // wait for 1 clock tick + f_shreg = {tb_f_data, f_shreg[511:32]}; // store data word + end
+ //
+ tb_f_addr = {4{1'bX}}; // wipe address
+ f = f_shreg; // return
+ //
+ end
+ //
+ endtask +
+ //
+ // calc_factor_384
+ //
+ task calc_factor_384;
+ //
input [383:0] n;
output [383:0] factor;
reg [383:0] f;
reg [384:0] f1;
reg [384:0] f2;
integer i;
-
+ //
begin
-
+ //
f = 384'd1;
-
- for (i=0; i<768; i=i+1) begin
+ //
+ for (i=0; i<2*384; i=i+1) begin
f1 = {f, 1'b0};
f2 = f1 - {1'b0, n};
f = (f1 >= {1'b0, n}) ? f2 : f1; end
-
+ //
factor = f;
-
+ //
end
+ //
+ endtask +
+ //
+ // calc_factor_512
+ //
+ task calc_factor_512;
+ //
+ input [511:0] n;
+ output [511:0] factor;
+ reg [511:0] f;
+ reg [512:0] f1;
+ reg [512:0] f2;
+ integer i;
+ //
+ begin
+ //
+ f = 512'd1;
+ //
+ for (i=0; i<2*512; i=i+1) begin
+ f1 = {f, 1'b0};
+ f2 = f1 - {1'b0, n};
+ f = (f1 >= {1'b0, n}) ? f2 : f1; + end
+ //
+ factor = f;
+ //
+ end
+ //
endtask |