diff --git a/junctions/src/main/scala/addrmap.scala b/junctions/src/main/scala/addrmap.scala
index f37111c9..8e6dea4e 100644
--- a/junctions/src/main/scala/addrmap.scala
+++ b/junctions/src/main/scala/addrmap.scala
@@ -5,6 +5,33 @@ package junctions
 import Chisel._
 import scala.collection.mutable.HashMap
 
+case object PAddrBits extends Field[Int]
+case object VAddrBits extends Field[Int]
+case object PgIdxBits extends Field[Int]
+case object PgLevels extends Field[Int]
+case object PgLevelBits extends Field[Int]
+case object ASIdBits extends Field[Int]
+case object PPNBits extends Field[Int]
+case object VPNBits extends Field[Int]
+
+case object GlobalAddrMap extends Field[AddrMap]
+case object MMIOBase extends Field[BigInt]
+
+trait HasAddrMapParameters {
+  implicit val p: Parameters
+
+  val paddrBits = p(PAddrBits)
+  val vaddrBits = p(VAddrBits)
+  val pgIdxBits = p(PgIdxBits)
+  val ppnBits = p(PPNBits)
+  val vpnBits = p(VPNBits)
+  val pgLevels = p(PgLevels)
+  val pgLevelBits = p(PgLevelBits)
+  val asIdBits = p(ASIdBits)
+
+  val addrMap = new AddrHashMap(p(GlobalAddrMap))
+}
+
 abstract class MemRegion { def size: BigInt }
 
 case class MemSize(size: BigInt, prot: Int) extends MemRegion
diff --git a/junctions/src/main/scala/memserdes.scala b/junctions/src/main/scala/memserdes.scala
index a439c8a9..2fc8ace1 100644
--- a/junctions/src/main/scala/memserdes.scala
+++ b/junctions/src/main/scala/memserdes.scala
@@ -4,15 +4,6 @@ package junctions
 import Chisel._
 import scala.math._
 
-case object PAddrBits extends Field[Int]
-case object VAddrBits extends Field[Int]
-case object PgIdxBits extends Field[Int]
-case object PgLevels extends Field[Int]
-case object PgLevelBits extends Field[Int]
-case object ASIdBits extends Field[Int]
-case object PPNBits extends Field[Int]
-case object VPNBits extends Field[Int]
-
 case object MIFAddrBits extends Field[Int]
 case object MIFDataBits extends Field[Int]
 case object MIFTagBits extends Field[Int]
diff --git a/junctions/src/main/scala/nasti.scala b/junctions/src/main/scala/nasti.scala
index 32e25228..f57ff9fc 100644
--- a/junctions/src/main/scala/nasti.scala
+++ b/junctions/src/main/scala/nasti.scala
@@ -6,8 +6,6 @@ import scala.math.max
 import scala.collection.mutable.ArraySeq
 
 case object NastiKey extends Field[NastiParameters]
-case object NastiAddrMap extends Field[AddrMap]
-case object MMIOBase extends Field[BigInt]
 
 case class NastiParameters(dataBits: Int, addrBits: Int, idBits: Int)
 
@@ -571,9 +569,9 @@ class NastiRecursiveInterconnect(
   }
 }
 
-class NastiTopInterconnect(val nMasters: Int, val nSlaves: Int)
+class NastiTopInterconnect(val nMasters: Int, val nSlaves: Int, addrMap: AddrMap)
                           (implicit p: Parameters) extends NastiInterconnect {
-  val temp = Module(new NastiRecursiveInterconnect(nMasters, nSlaves, p(NastiAddrMap)))
+  val temp = Module(new NastiRecursiveInterconnect(nMasters, nSlaves, addrMap))
 
   temp.io.masters.zip(io.masters).foreach { case (t, i) =>
     t.ar <> i.ar