1 files changed, 11 insertions, 2 deletions

diff --git a/abc80.v b/abc80.v
index d79c66d..b730a63 100644
--- a/abc80.v
+++ b/abc80.v
@@ -1080,16 +1080,25 @@ module abc80 (
 			   .strobe ( key1_strobe )
 			   );
 
+   reg video_width_sw_q;
+
    always @(negedge rst_n or posedge cpu_clk)
      begin
 	if ( ~rst_n )
-	  video_width <= ~sw[9]; // Set SW9 to go to 40 column after reset
+	  begin
+	     video_width <= 1'b0;
+	     video_width_sw_q <= 1'b0;
+	  end
 	else
 	  begin
+	     video_width_sw_q <= ~sw[9];
+
 	     if ( ~abc_in_n[3] )
 	       video_width <= 1'b0;
 	     else if ( ~abc_in_n[4] )
 	       video_width <= 1'b1;
+	     else if ( ~sw[9] ^ video_width_sw_q )
+	       video_width <= ~sw[9];
 	     else if ( key1_strobe & key1_debounced )
 	       video_width <= ~video_width;
 	  end
@@ -1196,7 +1205,7 @@ module abc80 (
    wire       intio_sel; // Selected for access via I/O ports
    reg [7:0]  intio_do;	 // Data out from MMU I/O ports
    reg	      intio_sel_q;
-   reg 	      abc_out_7_q;
+   reg	      abc_out_7_q;
 
    reg        turbo_set;
    reg        nmi_dis;