diff options
| -rw-r--r-- | led_toggle.tb.v | 40 |
1 files changed, 20 insertions, 20 deletions
diff --git a/led_toggle.tb.v b/led_toggle.tb.v index 95bfe7d..a883af4 100644 --- a/led_toggle.tb.v +++ b/led_toggle.tb.v @@ -3,11 +3,11 @@ module led_toggle_tb ( ); -reg clk_i; -reg rst_i; -reg key_i; -wire [5:0] led; -integer i = 0; +logic clk_i; +logic rst_i; +logic key_i; + +logic [5:0] led; led_toggle #(.STABLE_PERIOD(2)) uut( .rst_i(rst_i), @@ -24,12 +24,12 @@ initial begin filename="led_toggle.lxt2"; `endif $dumpfile(filename); $dumpvars(); - clk_i <= 0; - key_i <= 1'b1; + clk_i = 0; + key_i = 1'b1; #1 - rst_i <= 0; + rst_i = 0; #1 - rst_i <= 1; + rst_i = 1; end always #10 clk_i = ~clk_i; @@ -37,23 +37,23 @@ always #10 clk_i = ~clk_i; initial begin // initial key press - #25 - key_i <= ~key_i; - #40 - key_i <= ~key_i; + #13 + key_i = ~key_i; + repeat(2) @(negedge clk_i); + key_i = ~key_i; // try bouncing - #50 + repeat(3) @(negedge clk_i); - for (i=0; i < 19; i = i + 1) begin - #20 - key_i <= ~key_i; + for (integer i=0; i < 19; i = i + 1) begin + @(negedge clk_i); + key_i = ~key_i; end - #200 - key_i <= ~key_i; + repeat(10) @(negedge clk_i); + key_i = ~key_i; - #205 + repeat(10) @(negedge clk_i); $finish(); end |