diff --git a/src/main/java/li/cil/oc/api/driver/MethodWhitelist.java b/src/main/java/li/cil/oc/api/driver/MethodWhitelist.java
index 969811f4a..08432a825 100644
--- a/src/main/java/li/cil/oc/api/driver/MethodWhitelist.java
+++ b/src/main/java/li/cil/oc/api/driver/MethodWhitelist.java
@@ -15,7 +15,7 @@ package li.cil.oc.api.driver;
  * suppress inventory functionality if your TileEntity implements IInventory.
  * <p/>
  * To do so, implement this interface in the <em>environment</em> that you
- * return from your driver's {@link Block#createEnvironment(net.minecraft.world.World, net.minecraft.util.BlockPos)}
+ * return from your driver's {@link SidedBlock#createEnvironment(net.minecraft.world.World, net.minecraft.util.BlockPos, net.minecraft.util.EnumFacing)}
  * method, and provide the names of the allowed methods from {@link #whitelistedMethods()}.
  * <p/>
  * <em>Important</em>: if multiple drivers apply to a single block that each
diff --git a/src/main/java/li/cil/oc/api/driver/NamedBlock.java b/src/main/java/li/cil/oc/api/driver/NamedBlock.java
index 44b416647..ef6321709 100644
--- a/src/main/java/li/cil/oc/api/driver/NamedBlock.java
+++ b/src/main/java/li/cil/oc/api/driver/NamedBlock.java
@@ -7,7 +7,7 @@ package li.cil.oc.api.driver;
  * <p/>
  * This was previously to be implemented on the driver itself, but that has been
  * deprecated. Implement it in the environment returned from the block driver's
- * {@link Block#createEnvironment(net.minecraft.world.World, net.minecraft.util.BlockPos)}
+ * {@link SidedBlock#createEnvironment(net.minecraft.world.World, net.minecraft.util.BlockPos, net.minecraft.util.EnumFacing)}
  * method instead.
  */
 public interface NamedBlock {
diff --git a/src/main/scala/li/cil/oc/common/tileentity/Adapter.scala b/src/main/scala/li/cil/oc/common/tileentity/Adapter.scala
index 4194ff8be..73740bf41 100644
--- a/src/main/scala/li/cil/oc/common/tileentity/Adapter.scala
+++ b/src/main/scala/li/cil/oc/common/tileentity/Adapter.scala
@@ -19,7 +19,7 @@ import scala.collection.mutable
 class Adapter extends traits.Environment with traits.ComponentInventory with Analyzable with internal.Adapter {
   val node = api.Network.newNode(this, Visibility.Network).create()
 
-  private val blocks = Array.fill[Option[(ManagedEnvironment, api.driver.Block)]](6)(None)
+  private val blocks = Array.fill[Option[(ManagedEnvironment, api.driver.SidedBlock)]](6)(None)
 
   private val updatingBlocks = mutable.ArrayBuffer.empty[ManagedEnvironment]
 
@@ -55,7 +55,7 @@ class Adapter extends traits.Environment with traits.ComponentInventory with Ana
         // but the only 'downside' is that it can't be used to manipulate
         // inventories, which I actually consider a plus :P
         case _ =>
-          Option(api.Driver.driverFor(world, blockPos)) match {
+          Option(api.Driver.driverFor(world, blockPos, d)) match {
             case Some(newDriver) => blocks(d.ordinal()) match {
               case Some((oldEnvironment, driver)) =>
                 if (newDriver != driver) {
@@ -66,7 +66,7 @@ class Adapter extends traits.Environment with traits.ComponentInventory with Ana
                   node.disconnect(oldEnvironment.node)
 
                   // Then rebuild - if we have something.
-                  val environment = newDriver.createEnvironment(world, blockPos)
+                  val environment = newDriver.createEnvironment(world, blockPos, d)
                   if (environment != null) {
                     blocks(d.ordinal()) = Some((environment, newDriver))
                     if (environment.canUpdate) {
@@ -78,7 +78,7 @@ class Adapter extends traits.Environment with traits.ComponentInventory with Ana
                 } // else: the more things change, the more they stay the same.
               case _ =>
                 // A challenger appears. Maybe.
-                val environment = newDriver.createEnvironment(world, blockPos)
+                val environment = newDriver.createEnvironment(world, blockPos, d)
                 if (environment != null) {
                   blocks(d.ordinal()) = Some((environment, newDriver))
                   if (environment.canUpdate) {
diff --git a/src/main/scala/li/cil/oc/server/machine/Machine.scala b/src/main/scala/li/cil/oc/server/machine/Machine.scala
index 43442ed26..e659ed8bf 100644
--- a/src/main/scala/li/cil/oc/server/machine/Machine.scala
+++ b/src/main/scala/li/cil/oc/server/machine/Machine.scala
@@ -298,35 +298,36 @@ class Machine(val host: MachineHost) extends prefab.ManagedEnvironment with mach
     }
   }
 
-  override def signal(name: String, args: AnyRef*) = state.synchronized(state.top match {
-    case Machine.State.Stopped | Machine.State.Stopping => false
-    case _ => signals.synchronized {
-      if (signals.size >= 256) false
-      else if (args == null) {
-        signals.enqueue(new Machine.Signal(name, Array.empty))
-        if (architecture != null) architecture.onSignal()
-        true
+  override def signal(name: String, args: AnyRef*): Boolean = {
+    state.synchronized(state.top match {
+      case Machine.State.Stopped | Machine.State.Stopping => return false
+      case _ => signals.synchronized {
+        if (signals.size >= 256) return false
+        else if (args == null) {
+          signals.enqueue(new Machine.Signal(name, Array.empty))
+        }
+        else {
+          signals.enqueue(new Machine.Signal(name, args.map {
+            case null | Unit | None => null
+            case arg: java.lang.Boolean => arg
+            case arg: java.lang.Character => Double.box(arg.toDouble)
+            case arg: java.lang.Long => arg
+            case arg: java.lang.Number => Double.box(arg.doubleValue)
+            case arg: java.lang.String => arg
+            case arg: Array[Byte] => arg
+            case arg: Map[_, _] if arg.isEmpty || arg.head._1.isInstanceOf[String] && arg.head._2.isInstanceOf[String] => arg
+            case arg: NBTTagCompound => arg
+            case arg =>
+              OpenComputers.log.warn("Trying to push signal with an unsupported argument of type " + arg.getClass.getName)
+              null
+          }.toArray[AnyRef]))
+        }
       }
-      else {
-        signals.enqueue(new Machine.Signal(name, args.map {
-          case null | Unit | None => null
-          case arg: java.lang.Boolean => arg
-          case arg: java.lang.Character => Double.box(arg.toDouble)
-          case arg: java.lang.Long => arg
-          case arg: java.lang.Number => Double.box(arg.doubleValue)
-          case arg: java.lang.String => arg
-          case arg: Array[Byte] => arg
-          case arg: Map[_, _] if arg.isEmpty || arg.head._1.isInstanceOf[String] && arg.head._2.isInstanceOf[String] => arg
-          case arg: NBTTagCompound => arg
-          case arg =>
-            OpenComputers.log.warn("Trying to push signal with an unsupported argument of type " + arg.getClass.getName)
-            null
-        }.toArray[AnyRef]))
-        if (architecture != null) architecture.onSignal()
-        true
-      }
-    }
-  })
+    })
+
+    if (architecture != null) architecture.onSignal()
+    true
+  }
 
   override def popSignal(): Machine.Signal = signals.synchronized(if (signals.isEmpty) null else signals.dequeue().convert())