diff --git a/cores/gameboy/gb_mist.v b/cores/gameboy/gb_mist.v
index ed0736e..e8eda65 100644
--- a/cores/gameboy/gb_mist.v
+++ b/cores/gameboy/gb_mist.v
@@ -70,17 +70,18 @@ wire [7:0] joystick_1;
 parameter CONF_STR = {
         "GAMEBOY;;",
         "F,GBCGB ,Load;",
+        "O4,Mode,Auto,Color;",
         "O1,LCD color,white,yellow;",
         "O2,Boot,Normal,Fast;",
         "T3,Reset"
 };
 
-parameter CONF_STR_LEN = 9+14+26+20+8;
+parameter CONF_STR_LEN = 9+14+19+26+20+8;
 
 // the status register is controlled by the on screen display (OSD)
 wire [7:0] status;
 wire [1:0] buttons;
-wire       isGBC = dio_index[7:6] == 0;
+wire       isGBC = (dio_index[7:6] == 0) || status[4];
 
 // include user_io module for arm controller communication
 user_io #(.STRLEN(CONF_STR_LEN)) user_io ( 
diff --git a/cores/gameboy/lcd.v b/cores/gameboy/lcd.v
index d2d8958..9cc671b 100644
--- a/cores/gameboy/lcd.v
+++ b/cores/gameboy/lcd.v
@@ -44,22 +44,21 @@ always @(posedge clk) begin
 			shift_reg[shift_reg_wptr] <= data;
 			shift_reg_wptr <= {p_toggle, shift_reg_wptr[7:0] + 1'd1};
 		end
+	end
 
-		last_mode_in <= mode;
-
-		// reset write pointer at end of hsync phase
-		if((mode != 2'b00) && (last_mode_in == 2'b00)) begin
-			shift_reg_wptr <= 0;
-			p_toggle <= !p_toggle;
-		end
+	last_mode_in <= mode;
+	// reset write pointer at end of hsync phase
+	if((mode != 2'b00) && (last_mode_in == 2'b00)) begin
+		shift_reg_wptr <= {!p_toggle, 8'd0};
+		p_toggle <= !p_toggle;
 	end
 end
 
 // 
 parameter H   = 160;    // width of visible area
-parameter HFP = 24;     // unused time before hsync
+parameter HFP = 18;     // unused time before hsync
 parameter HS  = 20;     // width of hsync
-parameter HBP = 24;     // unused time after hsync
+parameter HBP = 30;     // unused time after hsync
 // total = 228
 
 parameter V   = 576;    // height of visible area
@@ -131,7 +130,7 @@ always@(posedge clk) begin
 		shift_reg_rptr <= {!p_toggle, shift_reg_rptr[7:0] + 1'd1};
 	end else begin
 		blank <= 1'b1;
-		shift_reg_rptr <= 0;
+		shift_reg_rptr <= {!p_toggle, 8'd0};
 	end
   end
 end