updates

1 files changed, 30 insertions, 22 deletions

diff --git a/Countdown.v b/Countdown.v
index 78e4162..a8c7506 100644
--- a/Countdown.v
+++ b/Countdown.v
@@ -23,35 +23,43 @@ module Countdown(
     input rst,
     input start,
     input [7:0] init,
-    output [7:0] t
+    output [7:0] t,

+	 output running
     );
 
 reg [7:0] t;
-reg running = 0;
+reg running = 0;

+reg [7:0] count;

+

+always @(posedge clk_1hz or posedge rst) begin

+	if (rst)

+		count <= 0;

+	else if (running)

+		count <= count + 1;

+	else

+		count <= 0;

+end

 
-always @(init) begin
-	if (!running) begin
-		t = init;
-	end else begin
-		t = t;
-	end
-end
-
-always @(posedge clk_1hz) begin
-	if (running) begin
-		t <= t - 1;
-	end else begin
-		t <= init;
-	end
-end
+always @(posedge clk_1hz or posedge rst) begin

+

+	if (rst)

+		t <= 0;

+	else //if (running)

+		t <= init - count;

 
-always @(posedge start) begin
-	running = 1;
 end
 
-always @(rst) begin
-	running = 0;
-	t = 0;
+always @(posedge start or posedge rst) begin

+	

+	if (rst)

+		running <= 0;

+	else if (count == init) begin

+		running <= 0;

+	end else if (start)

+		running <= 1;

+	else

+		running <= running;

+	
 end
 
 endmodule