diff --git a/presets/verilog/.gitignore b/presets/verilog/.gitignore
new file mode 100644
index 00000000..b8b71d53
--- /dev/null
+++ b/presets/verilog/.gitignore
@@ -0,0 +1,3 @@
+*.asc
+*.bin
+*.blif
diff --git a/presets/verilog/Makefile b/presets/verilog/Makefile
index d61a9fb6..39912cef 100644
--- a/presets/verilog/Makefile
+++ b/presets/verilog/Makefile
@@ -5,3 +5,10 @@ check:
 
 deps.dot:
 	grep \`include *.v | sed "s/:/ /g" | awk '{ print "\"" $1 "\" -> " $3 ";" }'
+
+%.bin: %.v
+	~/yosys/yosys -p "synth_ice40 -blif $*.blif" $*.v
+	arachne-pnr -d 1k -p icestick.pcf $*.blif -o $*.asc
+	icepack $*.asc $*.bin
+	#iceprog $*.bin
+	
\ No newline at end of file
diff --git a/presets/verilog/icestick.pcf b/presets/verilog/icestick.pcf
new file mode 100644
index 00000000..b679662a
--- /dev/null
+++ b/presets/verilog/icestick.pcf
@@ -0,0 +1,9 @@
+# For the iCE40HX-1K iCEstick
+
+set_io reset 99
+set_io hsync 98
+set_io vsync 97
+set_io rgb[0] 96
+set_io rgb[1] 95
+set_io rgb[2] 94
+set_io clk 21
diff --git a/presets/verilog/racing_game.v b/presets/verilog/racing_game.v
index e1a57444..d0f8227a 100644
--- a/presets/verilog/racing_game.v
+++ b/presets/verilog/racing_game.v
@@ -1,4 +1,4 @@
-
+
 `include "hvsync_generator.v"
 `include "sprite_bitmap.v"
 `include "sprite_renderer.v"
@@ -50,24 +50,30 @@ module racing_game_top(clk, hsync, vsync, rgb, hpaddle, vpaddle);
       if (!hpaddle) paddle_x <= vpos[7:0];
       if (!vpaddle) paddle_y <= vpos[7:0];
     end
+
   
+  // select player or enemy access to ROM
+  wire player_load = (hpos >= 256) && (hpos < 260);
+  wire enemy_load = (hpos >= 260);
   // wire up car sprite ROM
-  wire [3:0] car_sprite_yofs;
-  wire [7:0] car_sprite_bits;
-  
+  // multiplex between player and enemy ROM address
+  wire [3:0] player_sprite_yofs;
+  wire [3:0] enemy_sprite_yofs;
+  wire [3:0] car_sprite_yofs = player_load ? player_sprite_yofs : enemy_sprite_yofs;  
+  wire [7:0] car_sprite_bits;  
   car_bitmap car(
     .yofs(car_sprite_yofs), 
     .bits(car_sprite_bits));
   
   // signals for player sprite generator
-  wire player_vstart = {1'd0,player_y} == vpos;
-  wire player_hstart = {1'd0,player_x} == hpos;
+  wire player_vstart = {1'b0,player_y} == vpos;
+  wire player_hstart = {1'b0,player_x} == hpos;
   wire player_gfx;
   wire player_is_drawing;
 
   // signals for enemy sprite generator
-  wire enemy_vstart = {1'd0,enemy_y} == vpos;
-  wire enemy_hstart = {1'd0,enemy_x} == hpos;
+  wire enemy_vstart = {1'b0,enemy_y} == vpos;
+  wire enemy_hstart = {1'b0,enemy_x} == hpos;
   wire enemy_gfx;
   wire enemy_is_drawing;
   
@@ -75,9 +81,9 @@ module racing_game_top(clk, hsync, vsync, rgb, hpaddle, vpaddle);
   sprite_renderer player_renderer(
     .clk(clk),
     .vstart(player_vstart),
-    .load(hpos == 256),
+    .load(player_load),
     .hstart(player_hstart),
-    .rom_addr(car_sprite_yofs),
+    .rom_addr(player_sprite_yofs),
     .rom_bits(car_sprite_bits),
     .gfx(player_gfx),
     .in_progress(player_is_drawing));
@@ -86,9 +92,9 @@ module racing_game_top(clk, hsync, vsync, rgb, hpaddle, vpaddle);
   sprite_renderer enemy_renderer(
     .clk(clk),
     .vstart(enemy_vstart),
-    .load(hpos == 258),
+    .load(enemy_load),
     .hstart(enemy_hstart),
-    .rom_addr(car_sprite_yofs),
+    .rom_addr(enemy_sprite_yofs),
     .rom_bits(car_sprite_bits),
     .gfx(enemy_gfx),
     .in_progress(player_is_drawing));
diff --git a/presets/verilog/racing_game_cpu.v b/presets/verilog/racing_game_cpu.v
index 6aa64f9e..46819d55 100644
--- a/presets/verilog/racing_game_cpu.v
+++ b/presets/verilog/racing_game_cpu.v
@@ -1,4 +1,4 @@
-
+
 `include "hvsync_generator.v"
 `include "sprite_bitmap.v"
 `include "sprite_renderer.v"
@@ -106,22 +106,26 @@ module racing_game_cpu_top(clk, reset, hsync, vsync, hpaddle, vpaddle,
   );
   
   // flags for player sprite renderer module
-  wire player_vstart = {1'0,ram[PLAYER_Y]} == vpos;
-  wire player_hstart = {1'0,ram[PLAYER_X]} == hpos;
+  wire player_vstart = {1'b0,ram[PLAYER_Y]} == vpos;
+  wire player_hstart = {1'b0,ram[PLAYER_X]} == hpos;
   wire player_gfx;
   wire player_is_drawing;
 
   // flags for enemy sprite renderer module
-  wire enemy_vstart = {1'0,ram[ENEMY_Y]} == vpos;
-  wire enemy_hstart = {1'0,ram[ENEMY_X]} == hpos;
+  wire enemy_vstart = {1'b0,ram[ENEMY_Y]} == vpos;
+  wire enemy_hstart = {1'b0,ram[ENEMY_X]} == hpos;
   wire enemy_gfx;
   wire enemy_is_drawing;
 
-  // flags shared between sprite renderer modules
-  wire [3:0] car_sprite_yofs;
-  wire [7:0] car_sprite_bits;
-  
-  // car bitmap ROM
+  // select player or enemy access to ROM
+  wire player_load = (hpos >= 256) && (hpos < 260);
+  wire enemy_load = (hpos >= 260);
+  // wire up car sprite ROM
+  // multiplex between player and enemy ROM address
+  wire [3:0] player_sprite_yofs;
+  wire [3:0] enemy_sprite_yofs;
+  wire [3:0] car_sprite_yofs = player_load ? player_sprite_yofs : enemy_sprite_yofs;  
+  wire [7:0] car_sprite_bits;  
   car_bitmap car(
     .yofs(car_sprite_yofs), 
     .bits(car_sprite_bits));
@@ -131,8 +135,8 @@ module racing_game_cpu_top(clk, reset, hsync, vsync, hpaddle, vpaddle,
     .clk(clk),
     .vstart(player_vstart),
     .hstart(player_hstart),
-    .load(hpos == 256), //TODO?
-    .rom_addr(car_sprite_yofs),
+    .load(player_load),
+    .rom_addr(player_sprite_yofs),
     .rom_bits(car_sprite_bits),
     .gfx(player_gfx),
     .in_progress(player_is_drawing));
@@ -142,8 +146,8 @@ module racing_game_cpu_top(clk, reset, hsync, vsync, hpaddle, vpaddle,
     .clk(clk),
     .vstart(enemy_vstart),
     .hstart(enemy_hstart),
-    .load(hpos == 260), //TODO?
-    .rom_addr(car_sprite_yofs),
+    .load(enemy_load),
+    .rom_addr(enemy_sprite_yofs),
     .rom_bits(car_sprite_bits),
     .gfx(enemy_gfx),
     .in_progress(player_is_drawing));
diff --git a/src/waveform.ts b/src/waveform.ts
index d9fa84fa..5d9359c1 100644
--- a/src/waveform.ts
+++ b/src/waveform.ts
@@ -24,6 +24,7 @@ export class WaveformView {
   pageWidth : number;
   clocksPerPage : number;
   clockMax : number;
+  hexformat : boolean = false;
 
   constructor(parent:HTMLElement, wfp:WaveformProvider) {
     this.parent = parent;
@@ -118,6 +119,10 @@ export class WaveformView {
       this.setSelTime(0);
       this.setOrgTime(0);
     });
+    Mousetrap(wlc).bind('h', (e,combo) => {
+      this.hexformat = !this.hexformat;
+      this.refresh();
+    });
     $(window).resize(() => {
       this.recreate();
     }); // TODO: remove?
@@ -224,7 +229,8 @@ export class WaveformView {
       var val = data[this.tsel - this.t0];
       ctx.textAlign = 'right';
       if (val !== undefined) {
-        ctx.fillText(val.toString(), w-fh, ycen);
+        var s = this.hexformat ? val.toString(16) : val.toString();
+        ctx.fillText(s, w-fh, ycen);
       }
     }
     // draw labels