diff --git a/src/main/scala/devices/xilinx/xilinxml507mig/XilinxML507MIG.scala b/src/main/scala/devices/xilinx/xilinxml507mig/XilinxML507MIG.scala
index 32d584a..7052b42 100644
--- a/src/main/scala/devices/xilinx/xilinxml507mig/XilinxML507MIG.scala
+++ b/src/main/scala/devices/xilinx/xilinxml507mig/XilinxML507MIG.scala
@@ -3,35 +3,37 @@
 package sifive.fpgashells.devices.xilinx.xilinxml507mig
 
 import Chisel._
-import freechips.rocketchip.config.{Field, Parameters}
+import chisel3.core.{Input, Output}
+import freechips.rocketchip.config.Parameters
 import freechips.rocketchip.diplomacy._
-import freechips.rocketchip.subsystem.BaseSubsystem
 import freechips.rocketchip.tilelink._
 import freechips.rocketchip.util._
 
-case class MemoryML507Params(
+case class XilinxML507MIGParams(
     address: Seq[AddressSet]
 )
 
-case object MemoryML507Key extends Field[MemoryML507Params]
+class MemoryController extends BlackBox {
+    val io = IO(new Bundle {
+        val sys = new MemorySysIO
+        val ddr2 = new MemoryDDR2IO
 
-trait HasMemoryML507 { this: BaseSubsystem =>
-    val memory = LazyModule(new TLMemoryML507(p(MemoryML507Key)))
+        val request_addr = Input(UInt(28.W))
+        val request_read = Input(Bool())
+        val request_data = Input(UInt(256.W))
+        val request_mask = Input(UInt(32.W))
+        val request_valid = Input(Bool())
+        val request_ready = Output(Bool())
 
-    // The Fragmenter will not fragment messages <= 32 bytes, so all
-    // slaves have to support this size. 64 byte specifies the maximum
-    // supported transfer size that the slave side of the fragmenter supports
-    // against the master (here the main memory bus). Specifying alwaysMin as
-    // true results in all messages being fragmented to the minimal size
-    // (32 byte). In TL1 terms, slaves
-    // correspond roughly to managers and masters to clients (confusingly…).
-    val fragmenter = TLFragmenter(32, 64, alwaysMin=true)
+        val response_data = Output(UInt(256.W))
+        val response_valid = Output(Bool())
+        // no ready, as the mig does not wait
+    })
 
-    // TODO: right TL/memory node chain?
-    memory.node := fragmenter := memBuses.head.toDRAMController(Some("ml507mig"))()
+    override def desiredName: String = "memory_controller"
 }
 
-class TLMemoryML507(c: MemoryML507Params)(implicit p: Parameters) extends LazyModule {
+class XilinxML507MIGToTL(c: XilinxML507MIGParams)(implicit p: Parameters) extends LazyModule {
     // Corresponds to MIG interface with 64 bit width and a burst length of 4
     val width = 256
     val beatBytes = width/8 // 32 byte (half a cache-line, fragmented)
@@ -56,6 +58,15 @@ class TLMemoryML507(c: MemoryML507Params)(implicit p: Parameters) extends LazyMo
     // the data width (size signal, see below).
 
     lazy val module = new LazyModuleImp(this) {
+        val io = IO(new Bundle {
+            val port_sys = new MemorySysIO
+            val port_ddr2 = new MemoryDDR2IO
+        })
+
+        val controller = Module(new MemoryController)
+        io.port_sys <> controller.io.sys
+        io.port_ddr2 <> controller.io.ddr2
+
         // in: TLBundle, edge: TLEdgeIn
         val (in, edge) = node.in(0)
 
@@ -102,3 +113,28 @@ class TLMemoryML507(c: MemoryML507Params)(implicit p: Parameters) extends LazyMo
         in.e.ready := Bool(true)
     }
 }
+
+class XilinxML507MIG(c : XilinxML507MIGParams)(implicit p: Parameters) extends LazyModule {
+    // The Fragmenter will not fragment messages <= 32 bytes, so all
+    // slaves have to support this size. 64 byte specifies the maximum
+    // supported transfer size that the slave side of the fragmenter supports
+    // against the master (here the main memory bus). Specifying alwaysMin as
+    // true results in all messages being fragmented to the minimal size
+    // (32 byte). In TL1 terms, slaves correspond roughly to managers and
+    // masters to clients (confusingly…).
+    val fragmenter = LazyModule(new TLFragmenter(32, 64, alwaysMin=true))
+    val island = LazyModule(new XilinxML507MIGToTL(c))
+
+    val node: TLInwardNode =
+        island.node := fragmenter.node
+
+    lazy val module = new LazyModuleImp(this) {
+        val io = IO(new Bundle {
+            val port_sys = new MemorySysIO
+            val port_ddr2 = new MemoryDDR2IO
+        })
+
+        io.port_sys <> island.module.io.port_sys
+        io.port_ddr2 <> island.module.io.port_ddr2
+    }
+}
diff --git a/src/main/scala/devices/xilinx/xilinxml507mig/XilinxML507MIGPeriphery.scala b/src/main/scala/devices/xilinx/xilinxml507mig/XilinxML507MIGPeriphery.scala
new file mode 100644
index 0000000..fee53d1
--- /dev/null
+++ b/src/main/scala/devices/xilinx/xilinxml507mig/XilinxML507MIGPeriphery.scala
@@ -0,0 +1,58 @@
+// See LICENSE.SiFive for license details.
+
+package sifive.fpgashells.devices.xilinx.xilinxml507mig
+
+import Chisel._
+import chisel3.core.{Input, Output}
+import chisel3.experimental.Analog
+import freechips.rocketchip.config.Field
+import freechips.rocketchip.diplomacy._
+import freechips.rocketchip.subsystem.BaseSubsystem
+
+case object MemoryML507Key extends Field[XilinxML507MIGParams]
+
+trait HasMemoryML507 { this: BaseSubsystem =>
+    val memory = LazyModule(new XilinxML507MIG(p(MemoryML507Key)))
+
+    memory.node := memBuses.head.toDRAMController(Some("xilinxml507mig"))()
+}
+
+class MemorySysIO extends Bundle {
+    val clk0 = Input(Clock())
+    val clk90 = Input(Clock())
+    val clkdiv0 = Input(Clock())
+    val clk_locked = Input(Bool())
+    val clk_idelay = Input(Clock())
+    val reset = Input(Bool())
+}
+
+class MemoryDDR2IO extends Bundle {
+    val dq = Analog(64.W)
+    val a = Output(Bits(13.W))
+    val ba = Output(Bits(2.W))
+    val ras_n = Output(Bits(1.W))
+    val cas_n = Output(Bits(1.W))
+    val we_n = Output(Bits(1.W))
+    val cs_n = Output(Bits(1.W))
+    val odt = Output(Bits(1.W))
+    val cke = Output(Bits(1.W))
+    val dm = Output(Bits(8.W))
+    val dqs = Analog(8.W)
+    val dqs_n = Analog(8.W)
+    val ck = Output(Bits(2.W))
+    val ck_n = Output(Bits(2.W))
+}
+
+trait HasMemoryML507Bundle {
+    val ddr_sys: MemorySysIO
+    val ddr2: MemoryDDR2IO
+}
+
+trait HasMemoryML507ModuleImp extends LazyModuleImp with HasMemoryML507Bundle {
+    val outer: HasMemoryML507
+    val ddr_sys = IO(new MemorySysIO)
+    val ddr2 = IO(new MemoryDDR2IO)
+
+    ddr_sys <> outer.memory.module.io.port_sys
+    ddr2 <> outer.memory.module.io.port_ddr2
+}
diff --git a/src/main/scala/shell/xilinx/ML507Shell.scala b/src/main/scala/shell/xilinx/ML507Shell.scala
index ecb2116..fb798a9 100644
--- a/src/main/scala/shell/xilinx/ML507Shell.scala
+++ b/src/main/scala/shell/xilinx/ML507Shell.scala
@@ -15,6 +15,7 @@ import sifive.blocks.devices.uart._
 import sifive.blocks.devices.chiplink._
 import sifive.blocks.devices.terminal._
 
+import sifive.fpgashells.devices.xilinx.xilinxml507mig._
 import sifive.fpgashells.ip.xilinx.{PowerOnResetFPGAOnly, sdio_spi_bridge, ml507_dvi_clock, ml507_sys_clock, vc707reset}
 
 //-------------------------------------------------------------------------
@@ -79,6 +80,7 @@ abstract class ML507Shell(implicit val p: Parameters) extends RawModule {
   val reset_led            = IO(Output(Bool()))
 
   val dvi                  = IO(new TerminalDVIIO)
+  val ddr2                 = IO(new MemoryDDR2IO)
 
   //-----------------------------------------------------------------------
   // Wire declrations
@@ -159,6 +161,14 @@ abstract class ML507Shell(implicit val p: Parameters) extends RawModule {
     dut.terminal.reset := dvi_reset
   }
 
+  //-----------------------------------------------------------------------
+  // Memory controller
+  //-----------------------------------------------------------------------
+
+  def connectDDRMemory(dut: HasMemoryML507ModuleImp): Unit = {
+    ddr2 <> dut.ddr2
+  }
+
   //-----------------------------------------------------------------------
   // UART
   //-----------------------------------------------------------------------