X-Git-Url: http://git.joshuawise.com/fpgaboy.git/blobdiff_plain/09c1936c32d74947896338a1c57270b2918656f8..01878f5fdca9d08e4cf7ceed7f5a39f4df602de4:/Sound1.v

diff --git a/Sound1.v b/Sound1.v
index 9444dbf..41abaa5 100644
--- a/Sound1.v
+++ b/Sound1.v
@@ -17,11 +17,11 @@ module Sound1(
 	);
 
 	/* can be optimized as register file */
-	reg [7:0] nr10, nr11, nr12, nr13, nr14;
+	reg [7:0] nr10 = 0, nr11 = 0, nr12 = 0, nr13 = 0, nr14 = 0;
 	reg [10:0] counter = 0;
 	reg [4:0] lencnt = 0;
 	reg [3:0] delta = 4'b1111;
-	reg [2:0] dutycnt;
+	reg toggle = 0;
 	reg [3:0] snd_out = 0;
 
 	assign snd_data = en ? snd_out : 0;
@@ -58,15 +58,10 @@ module Sound1(
 			counter <= counter - 1;
 		else begin
 			counter <= ~{nr14[2:0],nr13} + 1;  /* possible A */
-			dutycnt <= dutycnt + 1;
+			toggle <= ~toggle;
 		end
-
-		case (nr11[7:6])
-		2'b00: snd_out <= dutycnt ? 0 : delta;   /* probable A */
-		2'b01: snd_out <= (dutycnt[2:1] == 2'b0) ? delta : 0;
-		2'b10: snd_out <= dutycnt[2] ? delta : 0;
-		2'b11: snd_out <= (dutycnt[2:1] == 2'b0) ? 0 : delta;
-		endcase
+		
+		snd_out <= toggle ? delta : 0;	/* Leave it to Dennis. */
 	end
 
 	always @ (posedge lenclk) begin