diff --git a/src/main/java/li/cil/oc/common/asm/SimpleComponentTickHandler.java b/src/main/java/li/cil/oc/common/asm/SimpleComponentTickHandler.java
index de9e5f25a..5667ae503 100644
--- a/src/main/java/li/cil/oc/common/asm/SimpleComponentTickHandler.java
+++ b/src/main/java/li/cil/oc/common/asm/SimpleComponentTickHandler.java
@@ -5,12 +5,16 @@ import cpw.mods.fml.common.gameevent.TickEvent;
 import li.cil.oc.api.Network;
 import li.cil.oc.util.SideTracker;
 import net.minecraft.tileentity.TileEntity;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 
 import java.util.ArrayList;
 
 // This class is used for adding simple components to the component network.
 // It is triggered from a validate call, and executed in the next update tick.
 public final class SimpleComponentTickHandler {
+    private static final Logger log = LogManager.getLogger("OpenComputers");
+
     public static final ArrayList<Runnable> pending = new java.util.ArrayList<Runnable>();
 
     public static final SimpleComponentTickHandler Instance = new SimpleComponentTickHandler();
@@ -40,7 +44,11 @@ public final class SimpleComponentTickHandler {
                 pending.clear();
             }
             for (Runnable runnable : adds) {
-                runnable.run();
+                try {
+                    runnable.run();
+                } catch (Throwable t) {
+                    log.warn("Error in scheduled tick action.", t);
+                }
             }
         }
     }
diff --git a/src/main/scala/li/cil/oc/server/component/GraphicsCard.scala b/src/main/scala/li/cil/oc/server/component/GraphicsCard.scala
index c7d24aa30..f489ab7b8 100644
--- a/src/main/scala/li/cil/oc/server/component/GraphicsCard.scala
+++ b/src/main/scala/li/cil/oc/server/component/GraphicsCard.scala
@@ -71,6 +71,9 @@ abstract class GraphicsCard extends component.ManagedComponent {
     }
   }
 
+  @Callback(doc = """function():string -- Get the address of the screen the GPU is currently bound to.""")
+  def getScreen(context: Context, args: Arguments): Array[AnyRef] = screen(s => result(s.node.address))
+
   @Callback(direct = true, doc = """function():number, boolean -- Get the current background color and whether it's from the palette or not.""")
   def getBackground(context: Context, args: Arguments): Array[AnyRef] =
     screen(s => result(s.getBackgroundColor, s.isBackgroundFromPalette))