Index: project/reprap/arduino_emc-hal/arduino.py
===================================================================
--- a/project/reprap/arduino_emc-hal/arduino.py
+++ b/project/reprap/arduino_emc-hal/arduino.py
@@ -20,4 +20,10 @@
 import sys
 import time
+
+try:
+        import psyco
+        psyco.full()
+except ImportError:
+        pass
 
 def encode(addr, data):
@@ -74,14 +80,14 @@
                 v = (firstbyte << 7) | byte
                 port = (v >> 11) & 7
+                if port in range (6):
+                    if port > nout:
+                        b = v & 1024
+                        c['digital-in-%02d' % pinmap[port]] = b != 0
+                        c['digital-in-%02d-not' % pinmap[port]] = b == 0
 
-                if port >= nout:
-                    b = v & 1024
-                    c['digital-in-%02d' % pinmap[port]] = b != 0
-                    c['digital-in-%02d-not' % pinmap[port]] = b == 0
-
-                gain = c['analog-in-%02d-gain' % port] or 1.
-                offset = c['analog-in-%02d-offset' % port]
-                value = (v & 1023) / 1023. * 5.0 * gain + offset
-                c['analog-in-%02d' % port] = value
+                    gain = c['analog-in-%02d-gain' % port] or 1.
+                    offset = c['analog-in-%02d-offset' % port]
+                    value = (v & 1023) / 1023. * 5.0 * gain + offset
+                    c['analog-in-%02d' % port] = value
 
             firstbyte = byte