diff --git a/emulator.c b/emulator.c
index c566ac7..72f3a1a 100644
--- a/emulator.c
+++ b/emulator.c
@@ -37,7 +37,7 @@ SDL_Renderer *gRenderer;
 SDL_Texture *gTexture;
 Uint32 *pixels;
 
-Device *devconsole, *devscreen, *devmouse, *devkey, *devsprite, *devctrl;
+Device *devconsole, *devscreen, *devmouse, *devkey, *devsprite, *devcontroller;
 
 #pragma mark - Helpers
 
@@ -187,12 +187,6 @@ domouse(SDL_Event *event)
 	}
 }
 
-void
-dokey(SDL_Event *event)
-{
-	(void)event;
-}
-
 void
 doctrl(SDL_Event *event, int z)
 {
@@ -209,18 +203,16 @@ doctrl(SDL_Event *event, int z)
 	case SDLK_LEFT: flag = 0x40; break;
 	case SDLK_RIGHT: flag = 0x80; break;
 	}
-	setflag(&devctrl->mem[0], flag, z);
+	setflag(&devcontroller->mem[0], flag, z);
 }
 
 #pragma mark - Devices
 
 Uint8
-consoler(Device *d, Memory *m, Uint8 b)
+defaultrw(Device *d, Memory *m, Uint8 b)
 {
-	(void)b;
-	(void)d;
 	(void)m;
-	return 0;
+	return d->mem[b];
 }
 
 Uint8
@@ -235,7 +227,7 @@ consolew(Device *d, Memory *m, Uint8 b)
 }
 
 Uint8
-ppur(Device *d, Memory *m, Uint8 b)
+screenr(Device *d, Memory *m, Uint8 b)
 {
 	switch(b) {
 	case 0: return (WIDTH >> 8) & 0xff;
@@ -243,11 +235,12 @@ ppur(Device *d, Memory *m, Uint8 b)
 	case 2: return (HEIGHT >> 8) & 0xff;
 	case 3: return HEIGHT & 0xff;
 	}
+	(void)m;
 	return d->mem[b];
 }
 
 Uint8
-ppuw(Device *d, Memory *m, Uint8 b)
+screenw(Device *d, Memory *m, Uint8 b)
 {
 	d->mem[d->len++] = b;
 	if(d->len > 5) {
@@ -259,17 +252,12 @@ ppuw(Device *d, Memory *m, Uint8 b)
 			redraw(pixels);
 		d->len = 0;
 	}
+	(void)m;
 	return 0;
 }
 
 Uint8
-ppusr(Device *d, Memory *m, Uint8 b)
-{
-	return 0;
-}
-
-Uint8
-ppusw(Device *d, Memory *m, Uint8 b)
+spritew(Device *d, Memory *m, Uint8 b)
 {
 	d->mem[d->len++] = b;
 	if(d->len > 6) {
@@ -284,50 +272,6 @@ ppusw(Device *d, Memory *m, Uint8 b)
 	return 0;
 }
 
-Uint8
-mouser(Device *d, Memory *m, Uint8 b)
-{
-	return d->mem[b];
-}
-
-Uint8
-mousew(Device *d, Memory *m, Uint8 b)
-{
-	(void)d;
-	(void)b;
-	return 0;
-}
-
-Uint8
-keyr(Device *d, Memory *m, Uint8 b)
-{
-	(void)d;
-	(void)b;
-	return 0;
-}
-
-Uint8
-keyw(Device *d, Memory *m, Uint8 b)
-{
-	(void)d;
-	(void)b;
-	return 0;
-}
-
-Uint8
-ctrlr(Device *d, Memory *m, Uint8 b)
-{
-	return d->mem[b];
-}
-
-Uint8
-ctrlw(Device *d, Memory *m, Uint8 b)
-{
-	(void)d;
-	(void)b;
-	return 0;
-}
-
 #pragma mark - Generics
 
 int
@@ -378,12 +322,12 @@ main(int argc, char **argv)
 	if(!init())
 		return error("Init", "Failed");
 
-	devconsole = portuxn(&u, "console", consoler, consolew);
-	devscreen = portuxn(&u, "ppu", ppur, ppuw);
-	devmouse = portuxn(&u, "mouse", mouser, mousew);
-	devkey = portuxn(&u, "key", keyr, keyw);
-	devsprite = portuxn(&u, "ppu-sprite", ppusr, ppusw);
-	devctrl = portuxn(&u, "ctrl", ctrlr, ctrlw);
+	devconsole = portuxn(&u, "console", defaultrw, consolew);
+	devscreen = portuxn(&u, "screen", screenr, screenw);
+	devsprite = portuxn(&u, "sprite", defaultrw, spritew);
+	devcontroller = portuxn(&u, "controller", defaultrw, defaultrw);
+	devkey = portuxn(&u, "key", defaultrw, consolew);
+	devmouse = portuxn(&u, "mouse", defaultrw, defaultrw);
 
 	start(&u);
 
diff --git a/examples/controller.usm b/examples/controller.usm
index 63d1292..1e07106 100644
--- a/examples/controller.usm
+++ b/examples/controller.usm
@@ -7,8 +7,8 @@
 
 |0100 @RESET 
 
-	#05 =dev/r ( set dev/read to ctrl ) 
-	#04 =dev/w ( set dev/write to ppu-sprite ) 
+	#03 =dev/r ( set dev/read to controller ) 
+	#02 =dev/w ( set dev/write to sprite ) 
 	#0080 =x #0040 =y ( origin )
 	#01 ,cursor_icn ~x ~y ,putsprite JSR ( draw sprite )
 
diff --git a/examples/draw.usm b/examples/draw.usm
index 2c12724..b7ec9ac 100644
--- a/examples/draw.usm
+++ b/examples/draw.usm
@@ -9,7 +9,7 @@
 |0100 @RESET
 
 	( set dev/write to screen ) 
-	#01 ,dev/w STR 
+	#01 =dev/w ( set dev/write to sprite ) 
 
 	#01 ,color STR
 	( fill rect x y w h )
diff --git a/examples/hello.usm b/examples/hello.usm
index 3b111c4..45b8109 100644
--- a/examples/hello.usm
+++ b/examples/hello.usm
@@ -4,6 +4,7 @@
 
 |0100 @RESET 
 
+	#00 =dev/w ( set dev/write to sprite ) 
 	,string                                  ( add string pointer to stack )
 	@loop
 		DUP2 LDR IOW                         ( write pointer value to console )
diff --git a/examples/line.usm b/examples/line.usm
index fc69f2b..7921013 100644
--- a/examples/line.usm
+++ b/examples/line.usm
@@ -9,7 +9,7 @@
 |0100 @RESET
 
 	( set dev/write to screen ) 
-	#01 ,dev/w STR 
+	#01 =dev/w ( set dev/write to sprite ) 
 
 	( positive )
 	#01 ,color STR
diff --git a/examples/mouse.usm b/examples/mouse.usm
index e6e142d..15f7e1a 100644
--- a/examples/mouse.usm
+++ b/examples/mouse.usm
@@ -5,7 +5,7 @@
 
 |0100 @RESET 
 	
-	#02 =dev/r ( set dev/read mouse#02 )
+	#05 =dev/r ( set dev/read mouse#02 )
 	#01 =dev/w ( set dev/write screen#01 )
 
 BRK
diff --git a/examples/sprite.usm b/examples/sprite.usm
index d03ce57..ecc409c 100644
--- a/examples/sprite.usm
+++ b/examples/sprite.usm
@@ -5,7 +5,7 @@
 |0100 @RESET 
 
 	#01 =dev/w                           ( set dev/write to screen ) 
-	#04 =dev/w                           ( set dev/write to ppu-sprite ) 
+	#02 =dev/w                           ( set dev/write to sprite ) 
 
 	#00 ,star_icn #0041 #0041 ,putsprite JSR
 	#00 ,star_icn #0031 #0021 ,putsprite JSR