diff --git a/rtl/apple1_mist.sv b/rtl/apple1_mist.sv
index 9c174ae..be6786b 100644
--- a/rtl/apple1_mist.sv
+++ b/rtl/apple1_mist.sv
@@ -11,17 +11,14 @@
 // TODO ram powerup initial values
 // TODO reorganize file structure
 // TODO ACI: wav tools
-// TODO ACI: audio monitor menu option
-// TODO more accurate chip selection circuit
+// TODO A-F chip selection banks?
 // TODO check diff with updated data_io.v and other modules
 // TODO why F5 (reset) can't be pressed twice
 // TODO keyboard: use a PIA
 // TODO keyboard: isolate ps2 keyboard from apple1
 // TODO keyboard: check ps2 clock
 // TODO keyboard: make a true ascii keyboard
-// TODO keyboard: check backspace key
 // TODO osd menu yellow, why it doesn't work?
-// TODO display: remove char_seen
 // TODO display: check NTSC AD724 hsync problem
 // TODO display: powerup values
 // TODO display: simplify rom font
diff --git a/rtl/display.v b/rtl/display.v
index 538f9a4..e0b6a5f 100644
--- a/rtl/display.v
+++ b/rtl/display.v
@@ -66,14 +66,9 @@ module display (
     wire [4:0] font_line;
     wire font_out;
 
-    // cpu control registers
-    reg char_seen;
-
     // active region strobes
     wire h_active = (h_cnt >= hbp && h_cnt < hfp);
-    wire v_active = (v_cnt >= vbp && v_cnt < vfp);
-	 
-	 
+    wire v_active = (v_cnt >= vbp && v_cnt < vfp);	 
 
     // horizontal and vertical counters
     always @(posedge sys_clock or posedge reset) begin
@@ -207,8 +202,7 @@ module display (
     begin
         if (reset) begin
             h_cursor <= 6'd0;
-            v_cursor <= 5'd0;
-            char_seen <= 'b0;
+            v_cursor <= 5'd0;            
             vram_start_addr <= 5'd0;
             vram_end_addr <= 5'd24;
 				ready <= 0;
@@ -250,10 +244,9 @@ module display (
 
                 if (address == 1'b0) // address low == TX register
                 begin
-                    if (cpu_clken & w_en /*& ~char_seen*/ & ready)
+                    if (cpu_clken & w_en & ready)
                     begin
-                        // incoming character
-                        char_seen <= 1;
+                        // incoming character                        
 					         ready <= 0;			
 
                         case(din)
@@ -279,9 +272,7 @@ module display (
                             h_cursor <= h_cursor + 1;
                         end
                         endcase
-                    end
-                    else if(~cpu_clken & ~w_en)
-                        char_seen <= 0;								
+                    end                    
                 end
                 else
                 begin