diff --git a/.gitignore b/.gitignore
index 9dbc2093..bb9d9d53 100644
--- a/.gitignore
+++ b/.gitignore
@@ -54,6 +54,7 @@ host-packages
 host/.eggs
 release-files
 deploy-files
+firmware-bin
 *.tar.xz
 *.zip
 
diff --git a/host/greatfet/board.py b/host/greatfet/board.py
index 6c0312f6..8e938dd4 100644
--- a/host/greatfet/board.py
+++ b/host/greatfet/board.py
@@ -6,6 +6,8 @@
 Module containing the core definitions for a GreatFET board.
 """
 
+import string
+
 from pygreat.board import GreatBoard
 
 from .peripherals.led import LED
@@ -76,7 +78,7 @@ def __init__(self, *args, **kwargs):
         super(GreatFETBoard, self).__init__(*args, **kwargs)
 
 
-    def available_peripherals(self):
+    def available_interfaces(self):
         """ Returns a list of peripheral properties that exist on this board. """
         return self._peripherals[:]
 
@@ -172,3 +174,11 @@ def enable_low_level_access(self):
         self.lowlevel = LPC43xxTarget(self)
 
 
+    def __dir__(self):
+        """ Generate a cleaned-up dir listing for the relevant board. """
+
+        items = super(GreatFETBoard, self).__dir__()
+        return [item for item in items if item[0] in string.ascii_lowercase]
+
+
+