diff --git a/src/devices/screen.c b/src/devices/screen.c
index 01b2b68..1050be4 100644
--- a/src/devices/screen.c
+++ b/src/devices/screen.c
@@ -65,6 +65,40 @@ screen_blit(Uint8 *layer, Uint8 *ram, Uint16 addr, int x1, int y1, int color, in
 	}
 }
 
+/* clang-format off */
+
+static Uint8 icons[] = {
+	0x00, 0x7c, 0x82, 0x82, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x30, 0x10, 0x10, 0x10, 0x10, 0x10, 
+	0x10, 0x00, 0x7c, 0x82, 0x02, 0x7c, 0x80, 0x80, 0xfe, 0x00, 0x7c, 0x82, 0x02, 0x1c, 0x02, 
+	0x82, 0x7c, 0x00, 0x0c, 0x14, 0x24, 0x44, 0x84, 0xfe, 0x04, 0x00, 0xfe, 0x80, 0x80, 0x7c, 
+	0x02, 0x82, 0x7c, 0x00, 0x7c, 0x82, 0x80, 0xfc, 0x82, 0x82, 0x7c, 0x00, 0x7c, 0x82, 0x02, 
+	0x1e, 0x02, 0x02, 0x02, 0x00, 0x7c, 0x82, 0x82, 0x7c, 0x82, 0x82, 0x7c, 0x00, 0x7c, 0x82, 
+	0x82, 0x7e, 0x02, 0x82, 0x7c, 0x00, 0x7c, 0x82, 0x02, 0x7e, 0x82, 0x82, 0x7e, 0x00, 0xfc, 
+	0x82, 0x82, 0xfc, 0x82, 0x82, 0xfc, 0x00, 0x7c, 0x82, 0x80, 0x80, 0x80, 0x82, 0x7c, 0x00, 
+	0xfc, 0x82, 0x82, 0x82, 0x82, 0x82, 0xfc, 0x00, 0x7c, 0x82, 0x80, 0xf0, 0x80, 0x82, 0x7c,
+	0x00, 0x7c, 0x82, 0x80, 0xf0, 0x80, 0x80, 0x80};
+
+/* clang-format on */
+
+static void
+draw_byte(Uint8 v, Uint16 x, Uint16 y, Uint8 color)
+{
+	screen_blit(uxn_screen.fg, icons, v >> 4 << 3, x, y, color, 0, 0, 0);
+	screen_blit(uxn_screen.fg, icons, (v & 0xf) << 3, x + 8, y, color, 0, 0, 0);
+}
+
+static void
+screen_debugger(Uxn *u)
+{
+	int i;
+	for(i = 0; i < u->wst.ptr; i++)
+		draw_byte(u->wst.dat[i], i * 0x18 + 0x8, uxn_screen.height - 0x18, 0x2);
+	for(i = 0; i < u->rst.ptr; i++)
+		draw_byte(u->rst.dat[i], i * 0x18 + 0x8, uxn_screen.height - 0x10, 0x3);
+	for(i = 0; i < 0x40; i++)
+		draw_byte(u->ram[i], (i & 0x7) * 0x18 + 0x8, ((i >> 3) << 3) + 0x8, 1 + !!u->ram[i]);
+}
+
 void
 screen_palette(Uint8 *addr)
 {
@@ -111,7 +145,7 @@ screen_resize(Uint16 width, Uint16 height)
 }
 
 void
-screen_redraw(void)
+screen_redraw(Uxn *u)
 {
 	Uint8 *fg = uxn_screen.fg, *bg = uxn_screen.bg;
 	Uint32 palette[16], *pixels = uxn_screen.pixels;
@@ -129,40 +163,8 @@ screen_redraw(void)
 		}
 	uxn_screen.x1 = uxn_screen.y1 = 0xffff;
 	uxn_screen.x2 = uxn_screen.y2 = 0;
-}
-
-/* clang-format off */
-
-Uint8 icons[] = {
-	0x00, 0x7c, 0x82, 0x82, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x30, 0x10, 0x10, 0x10, 0x10, 0x10, 
-	0x10, 0x00, 0x7c, 0x82, 0x02, 0x7c, 0x80, 0x80, 0xfe, 0x00, 0x7c, 0x82, 0x02, 0x1c, 0x02, 
-	0x82, 0x7c, 0x00, 0x0c, 0x14, 0x24, 0x44, 0x84, 0xfe, 0x04, 0x00, 0xfe, 0x80, 0x80, 0x7c, 
-	0x02, 0x82, 0x7c, 0x00, 0x7c, 0x82, 0x80, 0xfc, 0x82, 0x82, 0x7c, 0x00, 0x7c, 0x82, 0x02, 
-	0x1e, 0x02, 0x02, 0x02, 0x00, 0x7c, 0x82, 0x82, 0x7c, 0x82, 0x82, 0x7c, 0x00, 0x7c, 0x82, 
-	0x82, 0x7e, 0x02, 0x82, 0x7c, 0x00, 0x7c, 0x82, 0x02, 0x7e, 0x82, 0x82, 0x7e, 0x00, 0xfc, 
-	0x82, 0x82, 0xfc, 0x82, 0x82, 0xfc, 0x00, 0x7c, 0x82, 0x80, 0x80, 0x80, 0x82, 0x7c, 0x00, 
-	0xfc, 0x82, 0x82, 0x82, 0x82, 0x82, 0xfc, 0x00, 0x7c, 0x82, 0x80, 0xf0, 0x80, 0x82, 0x7c,
-	0x00, 0x7c, 0x82, 0x80, 0xf0, 0x80, 0x80, 0x80};
-
-/* clang-format on */
-
-void
-draw_byte(Uint8 v, Uint16 x, Uint16 y, Uint8 color)
-{
-	screen_blit(uxn_screen.fg, icons, v >> 4 << 3, x, y, color, 0, 0, 0);
-	screen_blit(uxn_screen.fg, icons, (v & 0xf) << 3, x + 8, y, color, 0, 0, 0);
-}
-
-void
-screen_debugger(Uxn *u)
-{
-	int i;
-	for(i = 0; i < u->wst.ptr; i++)
-		draw_byte(u->wst.dat[i], i * 0x18 + 0x8, uxn_screen.height - 0x18, 0x2);
-	for(i = 0; i < u->rst.ptr; i++)
-		draw_byte(u->rst.dat[i], i * 0x18 + 0x8, uxn_screen.height - 0x10, 0x3);
-	for(i = 0; i < 0x40; i++)
-		draw_byte(u->ram[i], (i & 0x7) * 0x18 + 0x8, ((i >> 3) << 3) + 0x8, 1 + !!u->ram[i]);
+	if(u->dev[0x0e])
+		screen_debugger(u);
 }
 
 Uint8
diff --git a/src/devices/screen.h b/src/devices/screen.h
index 2989faf..5599dbb 100644
--- a/src/devices/screen.h
+++ b/src/devices/screen.h
@@ -26,8 +26,7 @@ void screen_fill(Uint8 *layer, int x1, int y1, int x2, int y2, int color);
 void screen_palette(Uint8 *addr);
 void screen_resize(Uint16 width, Uint16 height);
 void screen_change(Uint16 x1, Uint16 y1, Uint16 x2, Uint16 y2);
-void screen_redraw(void);
-void screen_debugger(Uxn *u);
+void screen_redraw(Uxn *u);
 
 Uint8 screen_dei(Uxn *u, Uint8 addr);
 void screen_deo(Uint8 *ram, Uint8 *d, Uint8 port);
diff --git a/src/uxn11.c b/src/uxn11.c
index 3bae085..a923264 100644
--- a/src/uxn11.c
+++ b/src/uxn11.c
@@ -29,7 +29,6 @@ WITH REGARD TO THIS SOFTWARE.
 
 static XImage *ximage;
 static Display *display;
-static Visual *visual;
 static Window window;
 
 #define WIDTH (64 * 8)
@@ -81,12 +80,14 @@ emu_resize(int width, int height)
 	return 1;
 }
 
-static int
-emu_start(Uxn *u, char *rom)
+static void
+emu_restart(Uxn *u, char *rom, int soft)
 {
-	(void)u;
-	(void)rom;
-	return 1;
+	screen_resize(WIDTH, HEIGHT);
+	screen_fill(uxn_screen.bg, 0, 0, uxn_screen.width, uxn_screen.height, 0);
+	screen_fill(uxn_screen.fg, 0, 0, uxn_screen.width, uxn_screen.height, 0);
+	system_reboot(u, rom, soft);
+	/* set window title */
 }
 
 static void
@@ -141,9 +142,10 @@ emu_event(Uxn *u)
 		XLookupString((XKeyPressedEvent *)&ev, buf, 7, &sym, 0);
 		if(sym == XK_F2)
 			u->dev[0x0e] = !u->dev[0x0e];
-		if(sym == XK_F4)
-			if(!emu_start(u, "boot.rom"))
-				emu_start(u, boot_rom);
+		else if(sym == XK_F4)
+			emu_restart(u, boot_rom, 0);
+		else if(sym == XK_F5)
+			emu_restart(u, boot_rom, 1);
 		controller_down(u, &u->dev[0x80], get_button(sym));
 		controller_key(u, &u->dev[0x80], sym < 0x80 ? sym : (Uint8)buf[0]);
 	} break;
@@ -193,6 +195,7 @@ emu_run(Uxn *u, char *rom)
 
 	/* display */
 	Atom wmDelete;
+	static Visual *visual;
 	display = XOpenDisplay(NULL);
 	visual = DefaultVisual(display, 0);
 	window = XCreateSimpleWindow(display, RootWindow(display, 0), 0, 0, uxn_screen.width * SCALE + PAD * 2, uxn_screen.height * SCALE + PAD * 2, 1, 0, 0);
@@ -230,9 +233,7 @@ emu_run(Uxn *u, char *rom)
 		}
 		if(uxn_screen.x2) {
 			int x1 = uxn_screen.x1, y1 = uxn_screen.y1, x2 = uxn_screen.x2, y2 = uxn_screen.y2;
-			screen_redraw();
-			if(u->dev[0x0e])
-				screen_debugger(u);
+			screen_redraw(u);
 			XPutImage(display, window, DefaultGC(display, 0), ximage, x1, y1, x1 + PAD, y1 + PAD, x2 - x1, y2 - y1);
 		}
 	}
@@ -243,6 +244,8 @@ static int
 emu_end(Uxn *u)
 {
 	XDestroyImage(ximage);
+	close(0);
+	free(u->ram);
 	return u->dev[0x0f] & 0x7f;
 }