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`define ACE 7'b0001000
`define TWO 7'b0100100
`define THREE 7'b0110000
`define FOUR 7'b0011001
`define FIVE 7'b0010010
`define SIX 7'b0000010
`define SEVEN 7'b1111000
`define EIGHT 7'b0000000
`define NINE 7'b0010000
`define TEN 7'b1000000
`define JACK 7'b1100001
`define QUEEN 7'b0011000
`define KING 7'b0001001
`define BLANK 7'b1111111
module tb_task4();
logic err, resetb, slow_clock, CLOCK_50;
logic [3:0] KEY;
logic [6:0] HEX0, HEX1, HEX2, HEX3, HEX4, HEX5;
logic [9:0] LEDR;
assign KEY[0] = slow_clock;
assign KEY[3] = resetb;
task5 DUT(CLOCK_50, KEY, LEDR, HEX5, HEX4, HEX3, HEX2, HEX1, HEX0);
task check;
input logic [6:0] expected_HEX0, expected_HEX1, expected_HEX2,
expected_HEX3, expected_HEX4, expected_HEX5;
input logic [9:0] expected_LEDR;
if (HEX0 !== expected_HEX0) begin
err = 1;
$display("FAILED: HEX0 is incorrect.",);
end
if (HEX1 !== expected_HEX1) begin
err = 1;
$display("FAILED: HEX1 is incorrect.",);
end
if (HEX2 !== expected_HEX2) begin
err = 1;
$display("FAILED: HEX2 is incorrect.",);
end
if (HEX3 !== expected_HEX3) begin
err = 1;
$display("FAILED: HEX3 is incorrect.",);
end
if (HEX4 !== expected_HEX4) begin
err = 1;
$display("FAILED: HEX4 is incorrect.",);
end
if (HEX5 !== expected_HEX5) begin
err = 1;
$display("FAILED: HEX5 is incorrect.",);
end
if (LEDR !== expected_LEDR) begin
err = 1;
$display("FAILED: LEDR is incorrect.",);
end
endtask: check
initial forever begin
slow_clock = 1'b0;
#5;
slow_clock = 1'b1;
#5;
end
initial begin
err = 0;
/* Reset. */
$display("Test 1");
resetb = 1'b0;
#10;
resetb = 1'b1;
check(`BLANK, `BLANK, `BLANK, `BLANK, `BLANK, `BLANK, 10'b00_0000_0000);
/* Test for natural win. Player: 9T, dealer: A2. */
$display("Test 2.1");
force tb_task5.DUT.dp.new_card = 4'd9;
#10;
check(`NINE, `BLANK, `BLANK, `BLANK, `BLANK, `BLANK, 10'b00_0000_1001);
$display("Test 2.2");
force tb_task5.DUT.dp.new_card = 4'd1;
#10;
check(`NINE, `BLANK, `BLANK, `ACE, `BLANK, `BLANK, 10'b00_0001_1001);
$display("Test 2.3");
force tb_task5.DUT.dp.new_card = 4'd10;
#10;
check(`NINE, `TEN, `BLANK, `ACE, `BLANK, `BLANK, 10'b00_0001_1001);
$display("Test 2.4");
force tb_task5.DUT.dp.new_card = 4'd2;
#10;
check(`NINE, `TEN, `BLANK, `ACE, `TWO, `BLANK, 10'b00_0011_1001);
$display("Test 2.5");
/* Load anything. */
force tb_task5.DUT.dp.new_card = 4'd10;
#10;
check(`NINE, `TEN, `BLANK, `ACE, `TWO, `BLANK, 10'b01_0011_1001);
$display("Test 2.6");
resetb = 1'b0;
#10;
resetb = 1'b1;
check(`BLANK, `BLANK, `BLANK, `BLANK, `BLANK, `BLANK, 10'b00_0000_0000);
if (~err)
$display("All tests passed.");
#10;
$stop;
end
endmodule: tb_task4
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