--- a/lameboy.py	Thu Feb 22 22:09:59 2018 +0100
+++ b/lameboy.py	Thu Feb 22 22:57:15 2018 +0100
@@ -84,7 +84,10 @@
         self._address = address
 
     def get_pressed(self):
-        self._i2c.readfrom_into(self._address, self._byte)
+        try:
+            self._i2c.readfrom_into(self._address, self._byte)
+        except OSError:
+            self._byte[0] = 0xff
         return self._byte[0] ^ 0xff
 
 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/menu.py	Thu Feb 22 22:57:15 2018 +0100
@@ -0,0 +1,111 @@
+import sys
+import os
+import time
+import pew
+
+
+def scroll(pix, dx=1):
+    x = 0
+    while True:
+        for x in range(x, pix.width, dx):
+            screen.blit(pix, -x, 1)
+            yield x
+        x = -8
+
+
+def change(pix, next_pix, x, dy):
+    for y in range(1, 1 + 8 * dy, dy):
+        screen.box(0)
+        screen.blit(pix, -x, y)
+        screen.blit(next_pix, 0, y - 7 * dy)
+        yield
+
+
+def hold_keys():
+    global hold
+
+    try:
+        keys = pew.keys()
+    except pew.GameOver:
+        keys = 0
+    if keys:
+        hold = 0
+    while pew.keys() and time.monotonic() - hold < 0.25:
+        return 0
+    hold = time.monotonic()
+    return keys
+
+
+def menu(entries):
+    brightness = 7
+    pew.brightness(brightness)
+    selected = 0
+    pix = pew.Pix.from_text(entries[selected])
+    x = 0
+    animation = scroll(pix)
+    while True:
+        keys = hold_keys()
+        if keys & pew.K_O:
+            return
+        if keys & pew.K_RIGHT:
+            brightness = min(brightness + 1, 15)
+            pew.brightness(brightness)
+        if keys & pew.K_LEFT:
+            brightness = max(brightness - 1, 0)
+            pew.brightness(brightness)
+        if keys & pew.K_UP:
+            selected = (selected - 1) % len(entries)
+            next_pix = pew.Pix.from_text(entries[selected])
+            yield from change(pix, next_pix, x, 1)
+            hold_keys()
+            pix = next_pix
+            animation = scroll(pix)
+            keys = 0
+        if keys & pew.K_DOWN:
+            selected = (selected + 1) % len(entries)
+            next_pix = pew.Pix.from_text(entries[selected])
+            yield from change(pix, next_pix, x, -1)
+            hold_keys()
+            pix = next_pix
+            animation = scroll(pix)
+            keys = 0
+        x = next(animation)
+        yield selected
+        yield selected
+
+
+pew.init()
+pew.init()
+while True:
+    hold = 0
+    screen = pew.Pix()
+    files = [name[:-3] for name in os.listdir()
+             if name.endswith('.py') and name not in {
+                 'main.py', 'boot.py', 'menu.py', 'pew.py', 'lameboy.py'
+            }]
+    m = menu(files)
+    selected = 0
+    try:
+        while pew.keys():
+            pew.tick(1/24)
+    except pew.GameOver:
+        pass
+    while True:
+        try:
+            selected = next(m)
+        except StopIteration:
+            break
+        pew.show(screen)
+        pew.tick(1/24)
+    screen.box(0)
+    pew.show(screen)
+    game = files[selected]
+    del screen
+    del m
+    del files
+    try:
+        __import__(game)
+    except pew.GameOver:
+        continue
+    del sys.modules[game]
+