diff --git a/.travis.yml b/.travis.yml
index 87447ea..ee00974 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -45,7 +45,7 @@ before_install:
   - sudo make install
   - cd ..
 
-  - git clone https://github.com/SpinalHDL/SpinalHDL.git
+  - git clone https://github.com/SpinalHDL/SpinalHDL.git -b dev
   
   - cd VexRiscv
   #- curl -T README.md -udolu1990:$BINTRAY_KEY https://api.bintray.com/content/spinalhdl/VexRiscv/test/0.0.4/README.md
diff --git a/build.sbt b/build.sbt
index d84c0a6..3075bba 100644
--- a/build.sbt
+++ b/build.sbt
@@ -25,22 +25,20 @@ lazy val root = (project in file(".")).
   settings(
     inThisBuild(List(
       organization := "com.github.spinalhdl",
-      scalaVersion := "2.11.6",
+      scalaVersion := "2.11.12",
       version      := "1.0.0"
     )),
     libraryDependencies ++= Seq(
-        "com.github.spinalhdl" % "spinalhdl-core_2.11" % "1.2.2",
-        "com.github.spinalhdl" % "spinalhdl-lib_2.11" % "1.2.2",
+        "com.github.spinalhdl" % "spinalhdl-core_2.11" % "1.3.0",
+        "com.github.spinalhdl" % "spinalhdl-lib_2.11" % "1.3.0",
         "org.scalatest" % "scalatest_2.11" % "2.2.1",
         "org.yaml" % "snakeyaml" % "1.8"
     ),
     name := "VexRiscv"
-  )/*.dependsOn(spinalHdlSim,spinalHdlCore,spinalHdlLib)
-lazy val spinalHdlSim = ProjectRef(file("../SpinalHDL"), "SpinalHDL-sim")
-lazy val spinalHdlCore = ProjectRef(file("../SpinalHDL"), "SpinalHDL-core")
-lazy val spinalHdlLib = ProjectRef(file("../SpinalHDL"), "SpinalHDL-lib")*/
+  )//.dependsOn(spinalHdlSim,spinalHdlCore,spinalHdlLib)
+//lazy val spinalHdlSim = ProjectRef(file("../SpinalHDL"), "SpinalHDL-sim")
+//lazy val spinalHdlCore = ProjectRef(file("../SpinalHDL"), "SpinalHDL-core")
+//lazy val spinalHdlLib = ProjectRef(file("../SpinalHDL"), "SpinalHDL-lib")
 
 
-addCompilerPlugin("org.scala-lang.plugins" % "scala-continuations-plugin_2.11.6" % "1.0.2")
-scalacOptions += "-P:continuations:enable"
 fork := true
\ No newline at end of file
diff --git a/project/build.properties b/project/build.properties
index c091b86..72f9028 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=0.13.16
+sbt.version=1.2.7
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 9190bbb..e5c4233 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,2 +1,2 @@
-addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "5.2.1")
+addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "5.2.4")
 
diff --git a/src/main/scala/spinal/lib/misc/HexTools.scala b/src/main/scala/spinal/lib/misc/HexTools.scala
deleted file mode 100644
index d35de53..0000000
--- a/src/main/scala/spinal/lib/misc/HexTools.scala
+++ /dev/null
@@ -1,58 +0,0 @@
-package spinal.lib.misc
-
-import spinal.core._
-
-import scala.collection.mutable.ArrayBuffer
-
-object HexTools{
-  def readHexFile(path : String, hexOffset : Int, callback : (Int, Int) => Unit) : Unit ={
-    import scala.io.Source
-    def hToI(that : String, start : Int, size : Int) = Integer.parseInt(that.substring(start,start + size), 16)
-
-    var offset = 0
-    for (line <- Source.fromFile(path).getLines) {
-      if (line.charAt(0) == ':'){
-        val byteCount = hToI(line, 1, 2)
-        val nextAddr = hToI(line, 3, 4) + offset
-        val key = hToI(line, 7, 2)
-        key match {
-          case 0 =>
-            for(i <- 0 until byteCount){
-              callback(nextAddr + i - hexOffset, hToI(line, 9 + i * 2, 2))
-            }
-          case 2 =>
-            offset = hToI(line, 9, 4) << 4
-          case 4 =>
-            offset = hToI(line, 9, 4) << 16
-          case 3 =>
-          case 5 =>
-          case 1 =>
-        }
-      }
-    }
-  }
-
-  def readHexFile(path : String, hexOffset : Int): Array[BigInt] ={
-    var onChipRomSize = 0
-    readHexFile(path, hexOffset ,(address, _) => {
-      onChipRomSize = Math.max((address).toInt, onChipRomSize) + 1
-    })
-
-    val initContent = Array.fill[BigInt]((onChipRomSize+3)/4)(0)
-    readHexFile(path, hexOffset,(address,data) => {
-      val addressWithoutOffset = (address).toInt
-      if(addressWithoutOffset < onChipRomSize)
-        initContent(addressWithoutOffset >> 2) |= BigInt(data) << ((addressWithoutOffset & 3)*8)
-    })
-    initContent
-  }
-
-  def initRam[T <: Data](ram : Mem[T], onChipRamHexFile : String, hexOffset : BigInt): Unit ={
-    val initContent = Array.fill[BigInt](ram.wordCount)(0)
-    HexTools.readHexFile(onChipRamHexFile, 0,(address,data) => {
-      val addressWithoutOffset = (address - hexOffset).toInt
-      initContent(addressWithoutOffset >> 2) |= BigInt(data) << ((addressWithoutOffset & 3)*8)
-    })
-    ram.initBigInt(initContent)
-  }
-}
\ No newline at end of file
diff --git a/src/main/scala/vexriscv/VexRiscv.scala b/src/main/scala/vexriscv/VexRiscv.scala
index 01ce0ca..9665a31 100644
--- a/src/main/scala/vexriscv/VexRiscv.scala
+++ b/src/main/scala/vexriscv/VexRiscv.scala
@@ -22,6 +22,8 @@ case class VexRiscvConfig(){
   var withWriteBackStage = true
   val plugins = ArrayBuffer[Plugin[VexRiscv]]()
 
+  def add(that : Plugin[VexRiscv]) : this.type = {plugins += that;this}
+
   //Default Stageables
   object IS_RVC extends Stageable(Bool)
   object BYPASSABLE_EXECUTE_STAGE   extends Stageable(Bool)
diff --git a/src/main/scala/vexriscv/demo/Murax.scala b/src/main/scala/vexriscv/demo/Murax.scala
index 675ef28..8a06cbc 100644
--- a/src/main/scala/vexriscv/demo/Murax.scala
+++ b/src/main/scala/vexriscv/demo/Murax.scala
@@ -4,8 +4,9 @@ import spinal.core._
 import spinal.lib._
 import spinal.lib.bus.amba3.apb._
 import spinal.lib.bus.misc.SizeMapping
+import spinal.lib.bus.simple.PipelinedMemoryBus
 import spinal.lib.com.jtag.Jtag
-import spinal.lib.com.spi.ddr.SpiDdrMaster
+import spinal.lib.com.spi.ddr.SpiXdrMaster
 import spinal.lib.com.uart._
 import spinal.lib.io.{InOutWrapper, TriStateArray}
 import spinal.lib.misc.{InterruptCtrl, Prescaler, Timer}
@@ -13,6 +14,7 @@ import spinal.lib.soc.pinsec.{PinsecTimerCtrl, PinsecTimerCtrlExternal}
 import vexriscv.plugin._
 import vexriscv.{VexRiscv, VexRiscvConfig, plugin}
 import spinal.lib.com.spi.ddr._
+import spinal.lib.bus.simple._
 import scala.collection.mutable.ArrayBuffer
 
 /**
@@ -39,7 +41,7 @@ case class MuraxConfig(coreFrequency : HertzNumber,
                        pipelineApbBridge  : Boolean,
                        gpioWidth          : Int,
                        uartCtrlConfig     : UartCtrlMemoryMappedConfig,
-                       xipConfig          : SpiDdrMasterCtrl.MemoryMappingParameters,
+                       xipConfig          : SpiXdrMasterCtrl.MemoryMappingParameters,
                        hardwareBreakpointCount : Int,
                        cpuPlugins         : ArrayBuffer[Plugin[VexRiscv]]){
   require(pipelineApbBridge || pipelineMainBus, "At least pipelineMainBus or pipelineApbBridge should be enable to avoid wipe transactions")
@@ -59,11 +61,11 @@ object MuraxConfig{
     pipelineMainBus       = false,
     pipelineApbBridge     = true,
     gpioWidth = 32,
-    xipConfig = ifGen(withXip) (SpiDdrMasterCtrl.MemoryMappingParameters(
-      SpiDdrMasterCtrl.Parameters(8, 12, SpiDdrParameter(2, 2, 1)).addFullDuplex(0,1,false),
+    xipConfig = ifGen(withXip) (SpiXdrMasterCtrl.MemoryMappingParameters(
+      SpiXdrMasterCtrl.Parameters(8, 12, SpiXdrParameter(2, 2, 1)).addFullDuplex(0,1,false),
       cmdFifoDepth = 32,
       rspFifoDepth = 32,
-      xip = SpiDdrMasterCtrl.XipBusParameters(addressWidth = 24, dataWidth = 32)
+      xip = SpiXdrMasterCtrl.XipBusParameters(addressWidth = 24, dataWidth = 32)
     )),
     hardwareBreakpointCount = if(withXip) 3 else 0,
     cpuPlugins = ArrayBuffer( //DebugPlugin added by the toplevel
@@ -163,7 +165,7 @@ case class Murax(config : MuraxConfig) extends Component{
     val gpioA = master(TriStateArray(gpioWidth bits))
     val uart = master(Uart())
 
-    val xip = ifGen(genXip)(master(SpiDdrMaster(xipConfig.ctrl.spi)))
+    val xip = ifGen(genXip)(master(SpiXdrMaster(xipConfig.ctrl.spi)))
   }
 
 
@@ -207,14 +209,14 @@ case class Murax(config : MuraxConfig) extends Component{
   )
 
   val system = new ClockingArea(systemClockDomain) {
-    val simpleBusConfig = SimpleBusConfig(
+    val pipelinedMemoryBusConfig = PipelinedMemoryBusConfig(
       addressWidth = 32,
       dataWidth = 32
     )
 
     //Arbiter of the cpu dBus/iBus to drive the mainBus
     //Priority to dBus, !! cmd transactions can change on the fly !!
-    val mainBusArbiter = new MuraxMasterArbiter(simpleBusConfig)
+    val mainBusArbiter = new MuraxMasterArbiter(pipelinedMemoryBusConfig)
 
     //Instanciate the CPU
     val cpu = new VexRiscv(
@@ -252,23 +254,23 @@ case class Murax(config : MuraxConfig) extends Component{
 
 
     //****** MainBus slaves ********
-    val mainBusMapping = ArrayBuffer[(SimpleBus,SizeMapping)]()
-    val ram = new MuraxSimpleBusRam(
+    val mainBusMapping = ArrayBuffer[(PipelinedMemoryBus,SizeMapping)]()
+    val ram = new MuraxPipelinedMemoryBusRam(
       onChipRamSize = onChipRamSize,
       onChipRamHexFile = onChipRamHexFile,
-      simpleBusConfig = simpleBusConfig
+      pipelinedMemoryBusConfig = pipelinedMemoryBusConfig
     )
     mainBusMapping += ram.io.bus -> (0x80000000l, onChipRamSize)
 
-    val apbBridge = new MuraxSimpleBusToApbBridge(
+    val apbBridge = new PipelinedMemoryBusToApbBridge(
       apb3Config = Apb3Config(
         addressWidth = 20,
         dataWidth = 32
       ),
       pipelineBridge = pipelineApbBridge,
-      simpleBusConfig = simpleBusConfig
+      pipelinedMemoryBusConfig = pipelinedMemoryBusConfig
     )
-    mainBusMapping += apbBridge.io.simpleBus -> (0xF0000000l, 1 MB)
+    mainBusMapping += apbBridge.io.pipelinedMemoryBus -> (0xF0000000l, 1 MB)
 
 
 
@@ -288,15 +290,15 @@ case class Murax(config : MuraxConfig) extends Component{
     apbMapping += timer.io.apb     -> (0x20000, 4 kB)
 
     val xip = ifGen(genXip)(new Area{
-      val ctrl = Apb3SpiDdrMasterCtrl(xipConfig)
+      val ctrl = Apb3SpiXdrMasterCtrl(xipConfig)
       ctrl.io.spi <> io.xip
       externalInterrupt setWhen(ctrl.io.interrupt)
       apbMapping += ctrl.io.apb     -> (0x1F000, 4 kB)
 
-      val accessBus = new SimpleBus(SimpleBusConfig(24,32))
+      val accessBus = new PipelinedMemoryBus(PipelinedMemoryBusConfig(24,32))
       mainBusMapping += accessBus -> (0xE0000000l, 16 MB)
 
-      ctrl.io.xip.cmd.valid <> (accessBus.cmd.valid && !accessBus.cmd.wr)
+      ctrl.io.xip.cmd.valid <> (accessBus.cmd.valid && !accessBus.cmd.write)
       ctrl.io.xip.cmd.ready <> accessBus.cmd.ready
       ctrl.io.xip.cmd.payload <> accessBus.cmd.address
 
@@ -316,7 +318,7 @@ case class Murax(config : MuraxConfig) extends Component{
     )
 
     val mainBusDecoder = new Area {
-      val logic = new MuraxSimpleBusDecoder(
+      val logic = new MuraxPipelinedMemoryBusDecoder(
         master = mainBusArbiter.io.masterBus,
         specification = mainBusMapping,
         pipelineMaster = pipelineMainBus
diff --git a/src/main/scala/vexriscv/demo/MuraxUtiles.scala b/src/main/scala/vexriscv/demo/MuraxUtiles.scala
index b940e8c..2422450 100644
--- a/src/main/scala/vexriscv/demo/MuraxUtiles.scala
+++ b/src/main/scala/vexriscv/demo/MuraxUtiles.scala
@@ -7,17 +7,18 @@ import spinal.lib.bus.amba3.apb.{Apb3, Apb3Config, Apb3SlaveFactory}
 import spinal.lib.bus.misc.SizeMapping
 import spinal.lib.misc.{HexTools, InterruptCtrl, Prescaler, Timer}
 import spinal.lib._
+import spinal.lib.bus.simple._
 import vexriscv.plugin.{DBusSimpleBus, IBusSimpleBus}
 
-class MuraxMasterArbiter(simpleBusConfig : SimpleBusConfig) extends Component{
+class MuraxMasterArbiter(pipelinedMemoryBusConfig : PipelinedMemoryBusConfig) extends Component{
   val io = new Bundle{
     val iBus = slave(IBusSimpleBus(false))
     val dBus = slave(DBusSimpleBus())
-    val masterBus = master(SimpleBus(simpleBusConfig))
+    val masterBus = master(PipelinedMemoryBus(pipelinedMemoryBusConfig))
   }
 
   io.masterBus.cmd.valid   := io.iBus.cmd.valid || io.dBus.cmd.valid
-  io.masterBus.cmd.wr      := io.dBus.cmd.valid && io.dBus.cmd.wr
+  io.masterBus.cmd.write      := io.dBus.cmd.valid && io.dBus.cmd.wr
   io.masterBus.cmd.address := io.dBus.cmd.valid ? io.dBus.cmd.address | io.iBus.cmd.pc
   io.masterBus.cmd.data    := io.dBus.cmd.data
   io.masterBus.cmd.mask    := io.dBus.cmd.size.mux(
@@ -31,7 +32,7 @@ class MuraxMasterArbiter(simpleBusConfig : SimpleBusConfig) extends Component{
 
   val rspPending = RegInit(False) clearWhen(io.masterBus.rsp.valid)
   val rspTarget = RegInit(False)
-  when(io.masterBus.cmd.fire && !io.masterBus.cmd.wr){
+  when(io.masterBus.cmd.fire && !io.masterBus.cmd.write){
     rspTarget  := io.dBus.cmd.valid
     rspPending := True
   }
@@ -52,18 +53,18 @@ class MuraxMasterArbiter(simpleBusConfig : SimpleBusConfig) extends Component{
 }
 
 
-case class MuraxSimpleBusRam(onChipRamSize : BigInt, onChipRamHexFile : String, simpleBusConfig : SimpleBusConfig) extends Component{
+case class MuraxPipelinedMemoryBusRam(onChipRamSize : BigInt, onChipRamHexFile : String, pipelinedMemoryBusConfig : PipelinedMemoryBusConfig) extends Component{
   val io = new Bundle{
-    val bus = slave(SimpleBus(simpleBusConfig))
+    val bus = slave(PipelinedMemoryBus(pipelinedMemoryBusConfig))
   }
 
   val ram = Mem(Bits(32 bits), onChipRamSize / 4)
-  io.bus.rsp.valid := RegNext(io.bus.cmd.fire && !io.bus.cmd.wr) init(False)
+  io.bus.rsp.valid := RegNext(io.bus.cmd.fire && !io.bus.cmd.write) init(False)
   io.bus.rsp.data := ram.readWriteSync(
     address = (io.bus.cmd.address >> 2).resized,
     data  = io.bus.cmd.data,
     enable  = io.bus.cmd.valid,
-    write  = io.bus.cmd.wr,
+    write  = io.bus.cmd.write,
     mask  = io.bus.cmd.mask
   )
   io.bus.cmd.ready := True
@@ -95,42 +96,10 @@ case class Apb3Rom(onChipRamBinFile : String) extends Component{
   io.apb.PREADY := True
 }
 
-class MuraxSimpleBusToApbBridge(apb3Config: Apb3Config, pipelineBridge : Boolean, simpleBusConfig : SimpleBusConfig) extends Component{
-  assert(apb3Config.dataWidth == simpleBusConfig.dataWidth)
 
-  val io = new Bundle {
-    val simpleBus = slave(SimpleBus(simpleBusConfig))
-    val apb = master(Apb3(apb3Config))
-  }
 
-  val simpleBusStage = SimpleBus(simpleBusConfig)
-  simpleBusStage.cmd << (if(pipelineBridge) io.simpleBus.cmd.halfPipe() else io.simpleBus.cmd)
-  simpleBusStage.rsp >-> io.simpleBus.rsp
-
-  val state = RegInit(False)
-  simpleBusStage.cmd.ready := False
-
-  io.apb.PSEL(0) := simpleBusStage.cmd.valid
-  io.apb.PENABLE := state
-  io.apb.PWRITE  := simpleBusStage.cmd.wr
-  io.apb.PADDR   := simpleBusStage.cmd.address.resized
-  io.apb.PWDATA  := simpleBusStage.cmd.data
-
-  simpleBusStage.rsp.valid := False
-  simpleBusStage.rsp.data  := io.apb.PRDATA
-  when(!state) {
-    state := simpleBusStage.cmd.valid
-  } otherwise {
-    when(io.apb.PREADY){
-      state := False
-      simpleBusStage.rsp.valid := !simpleBusStage.cmd.wr
-      simpleBusStage.cmd.ready := True
-    }
-  }
-}
-
-class MuraxSimpleBusDecoder(master : SimpleBus, val specification : Seq[(SimpleBus,SizeMapping)], pipelineMaster : Boolean) extends Area{
-  val masterPipelined = SimpleBus(master.config)
+class MuraxPipelinedMemoryBusDecoder(master : PipelinedMemoryBus, val specification : Seq[(PipelinedMemoryBus,SizeMapping)], pipelineMaster : Boolean) extends Area{
+  val masterPipelined = PipelinedMemoryBus(master.config)
   if(!pipelineMaster) {
     masterPipelined.cmd << master.cmd
     masterPipelined.rsp >> master.rsp
@@ -151,7 +120,7 @@ class MuraxSimpleBusDecoder(master : SimpleBus, val specification : Seq[(SimpleB
   val noHit = !hits.orR
   masterPipelined.cmd.ready := (hits,slaveBuses).zipped.map(_ && _.cmd.ready).orR || noHit
 
-  val rspPending  = RegInit(False) clearWhen(masterPipelined.rsp.valid) setWhen(masterPipelined.cmd.fire && !masterPipelined.cmd.wr)
+  val rspPending  = RegInit(False) clearWhen(masterPipelined.rsp.valid) setWhen(masterPipelined.cmd.fire && !masterPipelined.cmd.write)
   val rspNoHit    = RegNext(False) init(False) setWhen(noHit)
   val rspSourceId = RegNextWhen(OHToUInt(hits), masterPipelined.cmd.fire)
   masterPipelined.rsp.valid   := slaveBuses.map(_.rsp.valid).orR || (rspPending && rspNoHit)
diff --git a/src/main/scala/vexriscv/demo/SimpleBus.scala b/src/main/scala/vexriscv/demo/SimpleBus.scala
deleted file mode 100644
index e8a7404..0000000
--- a/src/main/scala/vexriscv/demo/SimpleBus.scala
+++ /dev/null
@@ -1,324 +0,0 @@
-package vexriscv.demo
-
-
-import spinal.core._
-import spinal.lib.bus.misc._
-import spinal.lib._
-
-import scala.collection.mutable
-import scala.collection.mutable.ArrayBuffer
-
-case class SimpleBusConfig(addressWidth : Int, dataWidth : Int)
-
-case class SimpleBusCmd(config : SimpleBusConfig) extends Bundle{
-  val wr = Bool
-  val address = UInt(config.addressWidth bits)
-  val data = Bits(config.dataWidth bits)
-  val mask = Bits(4 bit)
-}
-
-case class SimpleBusRsp(config : SimpleBusConfig) extends Bundle{
-  val data = Bits(config.dataWidth bits)
-}
-
-object SimpleBus{
-  def apply(addressWidth : Int, dataWidth : Int) = new SimpleBus(SimpleBusConfig(addressWidth, dataWidth))
-}
-case class SimpleBus(config : SimpleBusConfig) extends Bundle with IMasterSlave {
-  val cmd = Stream(SimpleBusCmd(config))
-  val rsp = Flow(SimpleBusRsp(config))
-
-  override def asMaster(): Unit = {
-    master(cmd)
-    slave(rsp)
-  }
-
-  def <<(m : SimpleBus) : Unit = {
-    val s = this
-    assert(m.config.addressWidth >= s.config.addressWidth)
-    assert(m.config.dataWidth == s.config.dataWidth)
-    s.cmd.valid := m.cmd.valid
-    s.cmd.wr := m.cmd.wr
-    s.cmd.address := m.cmd.address.resized
-    s.cmd.data := m.cmd.data
-    s.cmd.mask := m.cmd.mask
-    m.cmd.ready := s.cmd.ready
-    m.rsp.valid := s.rsp.valid
-    m.rsp.data := s.rsp.data
-  }
-  def >>(s : SimpleBus) : Unit = s << this
-
-  def cmdM2sPipe(): SimpleBus = {
-    val ret = cloneOf(this)
-    this.cmd.m2sPipe() >> ret.cmd
-    this.rsp           << ret.rsp
-    ret
-  }
-
-  def cmdS2mPipe(): SimpleBus = {
-    val ret = cloneOf(this)
-    this.cmd.s2mPipe() >> ret.cmd
-    this.rsp << ret.rsp
-    ret
-  }
-
-  def rspPipe(): SimpleBus = {
-    val ret = cloneOf(this)
-    this.cmd >> ret.cmd
-    this.rsp << ret.rsp.stage()
-    ret
-  }
-}
-
-
-
-
-
-object SimpleBusArbiter{
-  def apply(inputs : Seq[SimpleBus], pendingRspMax : Int, rspRouteQueue : Boolean, transactionLock : Boolean): SimpleBus = {
-    val c = SimpleBusArbiter(inputs.head.config, inputs.size, pendingRspMax, rspRouteQueue, transactionLock)
-    (inputs, c.io.inputs).zipped.foreach(_ <> _)
-    c.io.output
-  }
-}
-
-case class SimpleBusArbiter(simpleBusConfig : SimpleBusConfig, portCount : Int, pendingRspMax : Int, rspRouteQueue : Boolean, transactionLock : Boolean = true) extends Component{
-  val io = new Bundle{
-    val inputs = Vec(slave(SimpleBus(simpleBusConfig)), portCount)
-    val output = master(SimpleBus(simpleBusConfig))
-  }
-  val logic = if(portCount == 1) new Area{
-    io.output << io.inputs(0)
-  } else new Area {
-    val arbiterFactory = StreamArbiterFactory.lowerFirst
-    if(transactionLock) arbiterFactory.transactionLock else arbiterFactory.noLock
-    val arbiter = arbiterFactory.build(SimpleBusCmd(simpleBusConfig), portCount)
-    (arbiter.io.inputs, io.inputs).zipped.foreach(_ <> _.cmd)
-
-    val rspRouteOh = Bits(portCount bits)
-
-    val rsp = if(!rspRouteQueue) new Area{
-      assert(pendingRspMax == 1)
-      val pending = RegInit(False) clearWhen(io.output.rsp.valid)
-      val target = Reg(Bits(portCount bits))
-      rspRouteOh := target
-      when(io.output.cmd.fire && !io.output.cmd.wr){
-        target  := arbiter.io.chosenOH
-        pending := True
-      }
-      io.output.cmd << arbiter.io.output.haltWhen(pending && !io.output.rsp.valid)
-    } else new Area{
-      val (outputCmdFork, routeCmdFork) = StreamFork2(arbiter.io.output)
-      io.output.cmd << outputCmdFork
-
-      val rspRoute = routeCmdFork.translateWith(arbiter.io.chosenOH).throwWhen(routeCmdFork.wr).queueLowLatency(size = pendingRspMax, latency = 1)
-      rspRoute.ready := io.output.rsp.valid
-      rspRouteOh := rspRoute.payload
-    }
-
-    for ((input, id) <- io.inputs.zipWithIndex) {
-      input.rsp.valid := io.output.rsp.valid && rspRouteOh(id)
-      input.rsp.payload := io.output.rsp.payload
-    }
-  }
-}
-
-class SimpleBusSlaveFactory(bus: SimpleBus) extends BusSlaveFactoryDelayed{
-  bus.cmd.ready := True
-
-  val readAtCmd = Flow(Bits(bus.config.dataWidth bits))
-  val readAtRsp = readAtCmd.stage()
-
-  val askWrite = (bus.cmd.valid && bus.cmd.wr).allowPruning()
-  val askRead  = (bus.cmd.valid && !bus.cmd.wr).allowPruning()
-  val doWrite  = (askWrite && bus.cmd.ready).allowPruning()
-  val doRead   = (askRead  && bus.cmd.ready).allowPruning()
-
-  bus.rsp.valid := readAtRsp.valid
-  bus.rsp.data := readAtRsp.payload
-
-  readAtCmd.valid := doRead
-  readAtCmd.payload := 0
-
-  def readAddress() : UInt = bus.cmd.address
-  def writeAddress() : UInt = bus.cmd.address
-
-  override def readHalt(): Unit = bus.cmd.ready := False
-  override def writeHalt(): Unit = bus.cmd.ready := False
-
-  override def build(): Unit = {
-    super.doNonStopWrite(bus.cmd.data)
-
-    def doMappedElements(jobs : Seq[BusSlaveFactoryElement]) = super.doMappedElements(
-      jobs = jobs,
-      askWrite = askWrite,
-      askRead = askRead,
-      doWrite = doWrite,
-      doRead = doRead,
-      writeData = bus.cmd.data,
-      readData = readAtCmd.payload
-    )
-
-    switch(bus.cmd.address) {
-      for ((address, jobs) <- elementsPerAddress if address.isInstanceOf[SingleMapping]) {
-        is(address.asInstanceOf[SingleMapping].address) {
-          doMappedElements(jobs)
-        }
-      }
-    }
-
-    for ((address, jobs) <- elementsPerAddress if !address.isInstanceOf[SingleMapping]) {
-      when(address.hit(bus.cmd.address)){
-        doMappedElements(jobs)
-      }
-    }
-  }
-
-  override def busDataWidth: Int = bus.config.dataWidth
-  override def wordAddressInc: Int = busDataWidth / 8
-}
-
-case class SimpleBusDecoder(busConfig : SimpleBusConfig, mappings : Seq[AddressMapping], pendingMax : Int = 3) extends Component{
-  val io = new Bundle {
-    val input = slave(SimpleBus(busConfig))
-    val outputs = Vec(master(SimpleBus(busConfig)), mappings.size)
-  }
-  val hasDefault = mappings.contains(DefaultMapping)
-  val logic = if(hasDefault && mappings.size == 1){
-    io.outputs(0) <> io.input
-  } else new Area {
-    val hits = Vec(Bool, mappings.size)
-    for ((slaveBus, memorySpace, hit) <- (io.outputs, mappings, hits).zipped) yield {
-      hit := (memorySpace match {
-        case DefaultMapping => !hits.filterNot(_ == hit).orR
-        case _ => memorySpace.hit(io.input.cmd.address)
-      })
-      slaveBus.cmd.valid := io.input.cmd.valid && hit
-      slaveBus.cmd.payload := io.input.cmd.payload.resized
-    }
-    val noHit = if (!hasDefault) !hits.orR else False
-    io.input.cmd.ready := (hits, io.outputs).zipped.map(_ && _.cmd.ready).orR || noHit
-
-    val rspPendingCounter = Reg(UInt(log2Up(pendingMax + 1) bits)) init (0)
-    rspPendingCounter := rspPendingCounter + U(io.input.cmd.fire && !io.input.cmd.wr) - U(io.input.rsp.valid)
-    val rspHits = RegNextWhen(hits, io.input.cmd.fire)
-    val rspPending = rspPendingCounter =/= 0
-    val rspNoHit = if (!hasDefault) !rspHits.orR else False
-    io.input.rsp.valid := io.outputs.map(_.rsp.valid).orR || (rspPending && rspNoHit)
-    io.input.rsp.payload := io.outputs.map(_.rsp.payload).read(OHToUInt(rspHits))
-
-    val cmdWait = (io.input.cmd.valid && rspPending && hits =/= rspHits) || rspPendingCounter === pendingMax
-    when(cmdWait) {
-      io.input.cmd.ready := False
-      io.outputs.foreach(_.cmd.valid := False)
-    }
-  }
-}
-
-object SimpleBusConnectors{
-  def direct(m : SimpleBus, s : SimpleBus) : Unit = m >> s
-}
-
-case class SimpleBusInterconnect(){
-  case class MasterModel(var connector : (SimpleBus,SimpleBus) => Unit = SimpleBusConnectors.direct)
-  case class SlaveModel(mapping : AddressMapping, var connector : (SimpleBus,SimpleBus) => Unit = SimpleBusConnectors.direct, var transactionLock : Boolean = true)
-  case class ConnectionModel(m : SimpleBus, s : SimpleBus, var connector : (SimpleBus,SimpleBus) => Unit = SimpleBusConnectors.direct)
-
-  val masters = mutable.LinkedHashMap[SimpleBus, MasterModel]()
-  val slaves = mutable.LinkedHashMap[SimpleBus, SlaveModel]()
-  val connections = ArrayBuffer[ConnectionModel]()
-  var arbitrationPendingRspMaxDefault = 1
-  var arbitrationRspRouteQueueDefault = false
-
-  def perfConfig(): Unit ={
-    arbitrationPendingRspMaxDefault = 7
-    arbitrationRspRouteQueueDefault = true
-  }
-
-  def areaConfig(): Unit ={
-    arbitrationPendingRspMaxDefault = 1
-    arbitrationRspRouteQueueDefault = false
-  }
-
-  def setConnector(bus : SimpleBus)( connector : (SimpleBus,SimpleBus) => Unit): Unit = (masters.get(bus), slaves.get(bus)) match {
-    case (Some(m), _) =>    m.connector = connector
-    case (None, Some(s)) => s.connector = connector
-  }
-
-  def setConnector(m : SimpleBus, s : SimpleBus)(connector : (SimpleBus,SimpleBus) => Unit): Unit = connections.find(e => e.m == m && e.s == s) match {
-    case Some(c) => c.connector = connector
-  }
-
-  def addSlave(bus: SimpleBus,mapping: AddressMapping) : this.type = {
-    slaves(bus) = SlaveModel(mapping)
-    this
-  }
-
-  def addSlaves(orders : (SimpleBus,AddressMapping)*) : this.type = {
-    orders.foreach(order => addSlave(order._1,order._2))
-    this
-  }
-
-  def noTransactionLockOn(slave : SimpleBus) : Unit = slaves(slave).transactionLock = false
-  def noTransactionLockOn(slaves : Seq[SimpleBus]) : Unit = slaves.foreach(noTransactionLockOn(_))
-
-
-  def addMaster(bus : SimpleBus, accesses : Seq[SimpleBus]) : this.type = {
-    masters(bus) = MasterModel()
-    for(s <- accesses) connections += ConnectionModel(bus, s)
-    this
-  }
-
-  def addMasters(specs : (SimpleBus,Seq[SimpleBus])*) : this.type = {
-    specs.foreach(spec => addMaster(spec._1,spec._2))
-    this
-  }
-
-  def build(): Unit ={
-    def applyName(bus : Bundle,name : String, onThat : Nameable) : Unit = {
-      if(bus.component == Component.current)
-        onThat.setCompositeName(bus,name)
-      else if(bus.isNamed)
-        onThat.setCompositeName(bus.component,bus.getName() + "_" + name)
-    }
-
-    val connectionsInput  = mutable.HashMap[ConnectionModel,SimpleBus]()
-    val connectionsOutput = mutable.HashMap[ConnectionModel,SimpleBus]()
-    for((bus, model) <- masters){
-      val busConnections = connections.filter(_.m == bus)
-      val busSlaves = busConnections.map(c => slaves(c.s))
-      val decoder = new SimpleBusDecoder(bus.config, busSlaves.map(_.mapping))
-      applyName(bus,"decoder",decoder)
-      model.connector(bus, decoder.io.input)
-      for((connection, decoderOutput) <- (busConnections, decoder.io.outputs).zipped) {
-        connectionsInput(connection) = decoderOutput
-      }
-    }
-
-    for((bus, model) <- slaves){
-      val busConnections = connections.filter(_.s == bus)
-      val busMasters = busConnections.map(c => masters(c.m))
-      val arbiter = new SimpleBusArbiter(bus.config, busMasters.size, arbitrationPendingRspMaxDefault, arbitrationRspRouteQueueDefault, model.transactionLock)
-      applyName(bus,"arbiter",arbiter)
-      model.connector(arbiter.io.output, bus)
-      for((connection, arbiterInput) <- (busConnections, arbiter.io.inputs).zipped) {
-        connectionsOutput(connection) = arbiterInput
-      }
-    }
-
-    for(connection <- connections){
-      val m = connectionsInput(connection)
-      val s = connectionsOutput(connection)
-      if(m.config == s.config) {
-        connection.connector(m, s)
-      }else{
-        val tmp = cloneOf(s)
-        m >> tmp //Adapte the bus kind.
-        connection.connector(tmp,s)
-      }
-    }
-  }
-
-  //Will make SpinalHDL calling the build function at the end of the current component elaboration
-  Component.current.addPrePopTask(build)
-}
diff --git a/src/main/scala/vexriscv/ip/DataCache.scala b/src/main/scala/vexriscv/ip/DataCache.scala
index 8853820..5e4f9b7 100644
--- a/src/main/scala/vexriscv/ip/DataCache.scala
+++ b/src/main/scala/vexriscv/ip/DataCache.scala
@@ -6,7 +6,7 @@ import spinal.lib._
 import spinal.lib.bus.amba4.axi.{Axi4Config, Axi4Shared}
 import spinal.lib.bus.avalon.{AvalonMM, AvalonMMConfig}
 import spinal.lib.bus.wishbone.{Wishbone, WishboneConfig}
-import vexriscv.demo.SimpleBus
+import spinal.lib.bus.simple._
 
 case class DataCacheConfig( cacheSize : Int,
                             bytePerLine : Int,
@@ -346,8 +346,8 @@ case class DataCacheMemBus(p : DataCacheConfig) extends Bundle with IMasterSlave
 
 
 
-  def toSimpleBus(): SimpleBus = {
-    val bus = SimpleBus(32,32)
+  def toPipelinedMemoryBus(): PipelinedMemoryBus = {
+    val bus = PipelinedMemoryBus(32,32)
 
     val counter = Reg(UInt(log2Up(p.burstSize) bits)) init(0)
     when(bus.cmd.fire){ counter := counter + 1 }
@@ -355,7 +355,7 @@ case class DataCacheMemBus(p : DataCacheConfig) extends Bundle with IMasterSlave
 
     bus.cmd.valid := cmd.valid
     bus.cmd.address := (cmd.address(31 downto 2) | counter.resized) @@ U"00"
-    bus.cmd.wr := cmd.wr
+    bus.cmd.write := cmd.wr
     bus.cmd.mask := cmd.mask
     bus.cmd.data := cmd.data
     cmd.ready := bus.cmd.ready && (cmd.wr || counter === cmd.length)
diff --git a/src/main/scala/vexriscv/ip/InstructionCache.scala b/src/main/scala/vexriscv/ip/InstructionCache.scala
index 8ba3ba4..40cb700 100644
--- a/src/main/scala/vexriscv/ip/InstructionCache.scala
+++ b/src/main/scala/vexriscv/ip/InstructionCache.scala
@@ -6,7 +6,7 @@ import spinal.lib._
 import spinal.lib.bus.amba4.axi.{Axi4Config, Axi4ReadOnly}
 import spinal.lib.bus.avalon.{AvalonMM, AvalonMMConfig}
 import spinal.lib.bus.wishbone.{Wishbone, WishboneConfig}
-import vexriscv.demo.{SimpleBus, SimpleBusConfig}
+import spinal.lib.bus.simple._
 
 
 case class InstructionCacheConfig( cacheSize : Int,
@@ -46,7 +46,7 @@ case class InstructionCacheConfig( cacheSize : Int,
     constantBurstBehavior = true
   )
 
-  def getSimpleBusConfig() = SimpleBusConfig(
+  def getPipelinedMemoryBusConfig() = PipelinedMemoryBusConfig(
     addressWidth = 32,
     dataWidth = 32
   )
@@ -185,13 +185,13 @@ case class InstructionCacheMemBus(p : InstructionCacheConfig) extends Bundle wit
   }
 
 
-  def toSimpleBus(): SimpleBus = {
-    val simpleBusConfig = p.getSimpleBusConfig()
-    val bus = SimpleBus(simpleBusConfig)
+  def toPipelinedMemoryBus(): PipelinedMemoryBus = {
+    val pipelinedMemoryBusConfig = p.getPipelinedMemoryBusConfig()
+    val bus = PipelinedMemoryBus(pipelinedMemoryBusConfig)
     val counter = Counter(p.burstSize, bus.cmd.fire)
     bus.cmd.valid := cmd.valid
     bus.cmd.address := cmd.address(31 downto widthOf(counter.value) + 2) @@ counter @@ U"00"
-    bus.cmd.wr := False
+    bus.cmd.write := False
     bus.cmd.mask.assignDontCare()
     bus.cmd.data.assignDontCare()
     cmd.ready := counter.willOverflow
diff --git a/src/main/scala/vexriscv/plugin/CsrPlugin.scala b/src/main/scala/vexriscv/plugin/CsrPlugin.scala
index 6ad56a6..fb383e5 100644
--- a/src/main/scala/vexriscv/plugin/CsrPlugin.scala
+++ b/src/main/scala/vexriscv/plugin/CsrPlugin.scala
@@ -501,34 +501,34 @@ class CsrPlugin(config: CsrPluginConfig) extends Plugin[VexRiscv] with Exception
       }
 
       case class InterruptSource(cond : Bool, id : Int)
-      case class InterruptModel(privilege : Int, privilegeCond : Bool, sources : ArrayBuffer[InterruptSource])
-      val interruptModel = ArrayBuffer[InterruptModel]()
-      if(supervisorGen) interruptModel += InterruptModel(1, sstatus.SIE && privilege <= "01", ArrayBuffer(
+      case class InterruptPrivilege(privilege : Int, privilegeCond : Bool, sources : ArrayBuffer[InterruptSource])
+      val interruptModel = ArrayBuffer[InterruptPrivilege]()
+      if(supervisorGen) interruptModel += InterruptPrivilege(1, sstatus.SIE && privilege <= "01", ArrayBuffer(
         InterruptSource(sip.STIP && sie.STIE,  5),
         InterruptSource(sip.SSIP && sie.SSIE,  1),
         InterruptSource(sip.SEIP && sie.SEIE,  9)
       ))
 
-      interruptModel += InterruptModel(3, mstatus.MIE , ArrayBuffer(
+      interruptModel += InterruptPrivilege(3, mstatus.MIE , ArrayBuffer(
         InterruptSource(mip.MTIP && mie.MTIE,  7),
         InterruptSource(mip.MSIP && mie.MSIE,  3),
         InterruptSource(mip.MEIP && mie.MEIE, 11)
       ))
 
       case class DelegatorModel(value : Bits, source : Int, target : Int)
-      def solveDelegators(delegators : Seq[DelegatorModel], id : Int, lowerBound : Int): UInt = {
-        val filtredDelegators = delegators.filter(_.target >= lowerBound)
-        val ret = U(lowerBound, 2 bits)
-        for(d <- filtredDelegators){
-          when(!d.value(id)){
-            ret := d.source
-          }
-        }
-        ret
-      }
+//      def solveDelegators(delegators : Seq[DelegatorModel], id : Int, lowerBound : Int): UInt = {
+//        val filtredDelegators = delegators.filter(_.target >= lowerBound)
+//        val ret = U(lowerBound, 2 bits)
+//        for(d <- filtredDelegators){
+//          when(!d.value(id)){
+//            ret := d.source
+//          }
+//        }
+//        ret
+//      }
 
       def solveDelegators(delegators : Seq[DelegatorModel], id : UInt, lowerBound : UInt): UInt = {
-        if(delegators.isEmpty) return CombInit(lowerBound)
+        if(delegators.isEmpty) return U"11"
         val ret = U(delegators.last.target, 2 bits)
         for(d <- delegators){
           when(!d.value(id) || d.target < lowerBound){
@@ -536,6 +536,15 @@ class CsrPlugin(config: CsrPluginConfig) extends Plugin[VexRiscv] with Exception
           }
         }
         ret
+//        val ret = U"11"
+//        var continue = True
+//        for(d <- delegators){
+//          continue = continue && d.value(id)
+//          when(continue){
+//            ret := d.source
+//          }
+//        }
+//        ret.max(lowerBound)
       }
 
       val interruptDelegators = ArrayBuffer[DelegatorModel]()
@@ -601,7 +610,6 @@ class CsrPlugin(config: CsrPluginConfig) extends Plugin[VexRiscv] with Exception
 
         when(exceptionValidsRegs.orR){
           fetcher.haltIt()
-//          fetcher.flushIt()
         }
       } else null
 
@@ -609,11 +617,10 @@ class CsrPlugin(config: CsrPluginConfig) extends Plugin[VexRiscv] with Exception
 
 
 
+      //Process interrupt request, code and privilege
       val interrupt = False
       val interruptCode = UInt(4 bits).assignDontCare().addTag(Verilator.public)
-      val interruptTargetPrivilege = UInt(2 bits).assignDontCare()
-
-
+      val interruptDelegatorHit = interruptDelegators.map(d => (d -> False)).toMap
       for(model <- interruptModel){
         when(model.privilegeCond){
           when(model.sources.map(_.cond).orR){
@@ -622,11 +629,25 @@ class CsrPlugin(config: CsrPluginConfig) extends Plugin[VexRiscv] with Exception
           for(source <- model.sources){
             when(source.cond){
               interruptCode := source.id
-              interruptTargetPrivilege := solveDelegators(interruptDelegators, source.id, model.privilege)
+              for(interruptDelegator <- interruptDelegators){
+                interruptDelegatorHit(interruptDelegator) := (if(interruptDelegator.target < model.privilege){
+                  False
+                } else {
+                  interruptDelegator.value(source.id)
+                })
+              }
             }
           }
         }
       }
+
+      val interruptTargetPrivilege = U(if(interruptDelegators.isEmpty) 3 else interruptDelegators.last.target, 2 bits)
+      for(interruptDelegator <- interruptDelegators){
+        when(!interruptDelegatorHit(interruptDelegator)){
+          interruptTargetPrivilege := interruptDelegator.source
+        }
+      }
+
       interrupt.clearWhen(!allowInterrupts)
 
       val exception = if(exceptionPortCtrl != null) exceptionPortCtrl.exceptionValids.last && allowException else False
@@ -678,6 +699,7 @@ class CsrPlugin(config: CsrPluginConfig) extends Plugin[VexRiscv] with Exception
         jumpInterface.payload       := (if(!mtvecModeGen) mtvec.base @@ "00" else (mtvec.mode === 0 || hadException) ? (mtvec.base @@ "00") | ((mtvec.base + trapCause) @@ "00") )
         beforeLastStage.arbitration.flushAll := True
 
+        privilege := targetPrivilege
         switch(targetPrivilege){
           if(supervisorGen) is(1) {
             sstatus.SIE := False
diff --git a/src/main/scala/vexriscv/plugin/DBusSimplePlugin.scala b/src/main/scala/vexriscv/plugin/DBusSimplePlugin.scala
index 3f4479c..eb4ce46 100644
--- a/src/main/scala/vexriscv/plugin/DBusSimplePlugin.scala
+++ b/src/main/scala/vexriscv/plugin/DBusSimplePlugin.scala
@@ -6,7 +6,7 @@ import spinal.lib._
 import spinal.lib.bus.amba4.axi._
 import spinal.lib.bus.avalon.{AvalonMM, AvalonMMConfig}
 import spinal.lib.bus.wishbone.{Wishbone, WishboneConfig}
-import vexriscv.demo.SimpleBus
+import spinal.lib.bus.simple._
 import vexriscv.ip.DataCacheMemCmd
 
 
@@ -176,11 +176,11 @@ case class DBusSimpleBus() extends Bundle with IMasterSlave{
     rsp.error := False //TODO
     bus
   }
-  
-  def toSimpleBus() : SimpleBus = {
-    val bus = SimpleBus(32,32)
+
+  def toPipelinedMemoryBus() : PipelinedMemoryBus = {
+    val bus = PipelinedMemoryBus(32,32)
     bus.cmd.valid := cmd.valid
-    bus.cmd.wr := cmd.wr
+    bus.cmd.write := cmd.wr
     bus.cmd.address := cmd.address.resized
     bus.cmd.data := cmd.data
     bus.cmd.mask := cmd.size.mux(
diff --git a/src/main/scala/vexriscv/plugin/DebugPlugin.scala b/src/main/scala/vexriscv/plugin/DebugPlugin.scala
index 7d28b24..4915eea 100644
--- a/src/main/scala/vexriscv/plugin/DebugPlugin.scala
+++ b/src/main/scala/vexriscv/plugin/DebugPlugin.scala
@@ -141,7 +141,7 @@ class DebugPlugin(val debugClockDomain : ClockDomain, hardwareBreakpointCount :
       val haltIt = RegInit(False)
       val stepIt = RegInit(False)
 
-      val isPipActive = RegNext(List(decode,execute, memory, writeBack).map(_.arbitration.isValid).orR)
+      val isPipActive = RegNext(stages.map(_.arbitration.isValid).orR)
       val isPipBusy = isPipActive || RegNext(isPipActive)
       val haltedByBreak = RegInit(False)
 
@@ -152,8 +152,8 @@ class DebugPlugin(val debugClockDomain : ClockDomain, hardwareBreakpointCount :
       hardwareBreakpoints.foreach(_.valid init(False))
 
       val busReadDataReg = Reg(Bits(32 bit))
-      when(writeBack.arbitration.isValid) {
-        busReadDataReg := writeBack.output(REGFILE_WRITE_DATA)
+      when(stages.last.arbitration.isValid) {
+        busReadDataReg := stages.last.output(REGFILE_WRITE_DATA)
       }
       io.bus.cmd.ready := True
       io.bus.rsp.data := busReadDataReg
@@ -195,11 +195,11 @@ class DebugPlugin(val debugClockDomain : ClockDomain, hardwareBreakpointCount :
       }
 
 
-      decode.insert(DO_EBREAK) := !haltIt && (decode.input(IS_EBREAK) || hardwareBreakpoints.map(hb => hb.valid && hb.pc === (execute.input(PC) >> 1)).foldLeft(False)(_ || _))
+      decode.insert(DO_EBREAK) := !haltIt && (decode.input(IS_EBREAK) || hardwareBreakpoints.map(hb => hb.valid && hb.pc === (decode.input(PC) >> 1)).foldLeft(False)(_ || _))
       when(execute.arbitration.isValid && execute.input(DO_EBREAK)){
         execute.arbitration.haltByOther := True
         busReadDataReg := execute.input(PC).asBits
-        when(List(memory, writeBack).map(_.arbitration.isValid).orR === False){
+        when(stagesFromExecute.tail.map(_.arbitration.isValid).orR === False){
           iBusFetcher.flushIt()
           iBusFetcher.haltIt()
           execute.arbitration.flushAll := True
diff --git a/src/main/scala/vexriscv/plugin/IBusSimplePlugin.scala b/src/main/scala/vexriscv/plugin/IBusSimplePlugin.scala
index 756d372..636b193 100644
--- a/src/main/scala/vexriscv/plugin/IBusSimplePlugin.scala
+++ b/src/main/scala/vexriscv/plugin/IBusSimplePlugin.scala
@@ -6,8 +6,7 @@ import spinal.lib._
 import spinal.lib.bus.amba4.axi._
 import spinal.lib.bus.avalon.{AvalonMM, AvalonMMConfig}
 import spinal.lib.bus.wishbone.{Wishbone, WishboneConfig}
-import vexriscv.demo.SimpleBus
-
+import spinal.lib.bus.simple._
 
 
 case class IBusSimpleCmd() extends Bundle{
@@ -136,11 +135,11 @@ case class IBusSimpleBus(interfaceKeepData : Boolean = false) extends Bundle wit
     bus
   }
 
-  def toSimpleBus(): SimpleBus = {
-    val bus = SimpleBus(32,32)
+  def toPipelinedMemoryBus(): PipelinedMemoryBus = {
+    val bus = PipelinedMemoryBus(32,32)
     bus.cmd.arbitrationFrom(cmd)
     bus.cmd.address := cmd.pc.resized
-    bus.cmd.wr := False
+    bus.cmd.write := False
     bus.cmd.mask.assignDontCare()
     bus.cmd.data.assignDontCare()
     rsp.valid := bus.rsp.valid
diff --git a/src/test/cpp/regression/main.cpp b/src/test/cpp/regression/main.cpp
index ab9fab6..84d1f2b 100644
--- a/src/test/cpp/regression/main.cpp
+++ b/src/test/cpp/regression/main.cpp
@@ -35,7 +35,7 @@ public:
 		for(uint32_t i = 0;i < (1 << 12);i++) mem[i] = NULL;
 	}
 	~Memory(){
-		for(uint32_t i = 0;i < (1 << 12);i++) if(mem[i]) delete mem[i];
+		for(uint32_t i = 0;i < (1 << 12);i++) if(mem[i]) delete [] mem[i];
 	}
 
 	uint8_t* get(uint32_t address){
@@ -106,6 +106,7 @@ void loadHexImpl(string path,Memory* mem) {
 	fseek(fp, 0, SEEK_SET);
 	char* content = new char[size];
 	fread(content, 1, size, fp);
+	fclose(fp);
 
 	int offset = 0;
 	char* line = content;
@@ -146,7 +147,7 @@ void loadHexImpl(string path,Memory* mem) {
 		size--;
 	}
 
-	delete content;
+	delete [] content;
 }
 
 
@@ -322,7 +323,7 @@ public:
 		case MCAUSE: return &mcause.raw; break;
 		case MBADADDR: return &mbadaddr; break;
 		case MEPC: return &mepc; break;
-		default: fail(); break;
+		default: fail(); return NULL; break;
 		}
 	}
 
@@ -683,8 +684,14 @@ public:
         	mem.read(address, 4, (uint8_t*)data);
         	bool error;
     		ws->iBusAccessPatch(address,data,&error);
+    		return error;
         }
+
         virtual bool dRead(int32_t address, int32_t size, uint32_t *data){
+            if(size < 1 || size > 4){
+                cout << "dRead size=" << size << endl;
+                fail();
+            }
             if(address & (size-1) != 0) cout << "Ref did a unaligned read" << endl;
     		if((address & 0xF0000000) == 0xF0000000){
 				MemRead t = periphRead.front();
@@ -696,6 +703,7 @@ public:
     		}else {
             	mem.read(address, size, (uint8_t*)data);
     		}
+    		return false;
         }
         virtual void dWrite(int32_t address, int32_t size, uint32_t data){
             if(address & (size-1) != 0) cout << "Ref did a unaligned write" << endl;
@@ -1059,13 +1067,13 @@ public:
                             #ifdef TRACE_WITH_TIME
                             currentTime <<
                              #endif
-                             " PC " << hex << setw(8) <<  top->VexRiscv->writeBack_PC << " : reg[" << dec << setw(2) << (uint32_t)top->VexRiscv->writeBack_RegFilePlugin_regFileWrite_payload_address << "] = " << hex << setw(8) << top->VexRiscv->writeBack_RegFilePlugin_regFileWrite_payload_data << endl;
+                             " PC " << hex << setw(8) <<  top->VexRiscv->writeBack_PC << " : reg[" << dec << setw(2) << (uint32_t)top->VexRiscv->writeBack_RegFilePlugin_regFileWrite_payload_address << "] = " << hex << setw(8) << top->VexRiscv->writeBack_RegFilePlugin_regFileWrite_payload_data <<  dec << endl;
                     } else {
                         regTraces <<
                                 #ifdef TRACE_WITH_TIME
                                 currentTime <<
                                  #endif
-                                 " PC " << hex << setw(8) <<  top->VexRiscv->writeBack_PC << endl;
+                                 " PC " << hex << setw(8) <<  top->VexRiscv->writeBack_PC << dec << endl;
                     }
 					if(riscvRefEnable) if(rfWriteValid != riscvRef.rfWriteValid ||
 						(rfWriteValid && (rfWriteAddress!= riscvRef.rfWriteAddress || rfWriteData!= riscvRef.rfWriteData))){
@@ -1113,7 +1121,7 @@ public:
 			staticMutex.unlock();
 		} catch (const std::exception& e) {
 			staticMutex.lock();
-			cout << "FAIL " <<  name << " at PC=" << hex << setw(8) << top->VexRiscv->writeBack_PC << endl; //<<  " seed : " << seed <<
+			cout << "FAIL " <<  name << " at PC=" << hex << setw(8) << top->VexRiscv->writeBack_PC << dec << endl; //<<  " seed : " << seed <<
 			cycles += instanceCycles;
 			staticMutex.unlock();
 			failed = true;
@@ -2104,15 +2112,19 @@ public:
     	fseek(refFile, 0, SEEK_SET);
     	char* ref = new char[refSize];
     	fread(ref, 1, refSize, refFile);
+    	fclose(refFile);
     	
 
     	logTraces.flush();
+    	logTraces.close();
+
 		FILE *logFile = fopen((name + ".logTrace").c_str(), "r");
     	fseek(logFile, 0, SEEK_END);
     	uint32_t logSize = ftell(logFile);
     	fseek(logFile, 0, SEEK_SET);
     	char* log = new char[logSize];
     	fread(log, 1, logSize, logFile);
+    	fclose(logFile);
     	
     	if(refSize > logSize || memcmp(log,ref,refSize))
     		fail();
@@ -2138,7 +2150,7 @@ public:
     virtual void dBusAccess(uint32_t addr,bool wr, uint32_t size,uint32_t mask, uint32_t *data, bool *error) {
         Workspace::dBusAccess(addr,wr,size,mask,data,error);
         if(wr && addr == 0xF00FFF2C){
-            out32 << hex << setw(8) << std::setfill('0') << *data;
+            out32 << hex << setw(8) << std::setfill('0') << *data << dec;
             if(++out32Counter % 4 == 0) out32 << "\n";
             *error = 0;
         }
@@ -2157,15 +2169,19 @@ public:
     	fseek(refFile, 0, SEEK_SET);
     	char* ref = new char[refSize];
     	fread(ref, 1, refSize, refFile);
+    	fclose(refFile);
 
 
     	out32.flush();
+    	out32.close();
+
 		FILE *logFile = fopen((name + ".out32").c_str(), "r");
     	fseek(logFile, 0, SEEK_END);
     	uint32_t logSize = ftell(logFile);
     	fseek(logFile, 0, SEEK_SET);
     	char* log = new char[logSize];
     	fread(log, 1, logSize, logFile);
+    	fclose(logFile);
 
     	if(refSize > logSize || memcmp(log,ref,refSize))
     		fail();
diff --git a/src/test/cpp/regression/makefile b/src/test/cpp/regression/makefile
index a5d5643..ba24951 100644
--- a/src/test/cpp/regression/makefile
+++ b/src/test/cpp/regression/makefile
@@ -46,11 +46,11 @@ else
 endif
 
 
-ifneq ($(shell dplus -VV | grep timerInterrupt ../../../../VexRiscv.v -w),)
+ifneq ($(shell grep timerInterrupt ../../../../VexRiscv.v -w),)
     ADDCFLAGS += -CFLAGS -DTIMER_INTERRUPT
 endif
 
-ifneq ($(shell dplus -VV | grep externalInterrupt ../../../../VexRiscv.v -w),)
+ifneq ($(shell grep externalInterrupt ../../../../VexRiscv.v -w),)
     ADDCFLAGS += -CFLAGS -DEXTERNAL_INTERRUPT
 endif
 
diff --git a/src/test/scala/vexriscv/MuraxSim.scala b/src/test/scala/vexriscv/MuraxSim.scala
index 53c22b3..2cb7802 100644
--- a/src/test/scala/vexriscv/MuraxSim.scala
+++ b/src/test/scala/vexriscv/MuraxSim.scala
@@ -20,9 +20,9 @@ import scala.collection.mutable
 object MuraxSim {
   def main(args: Array[String]): Unit = {
 //    def config = MuraxConfig.default.copy(onChipRamSize = 256 kB)
-    def config = MuraxConfig.default(withXip = true).copy(onChipRamSize = 4 kB, onChipRamHexFile = "src/main/ressource/hex/muraxDemo.hex")
-    val simSlowDown = true
-    SimConfig.allOptimisation.withWave.compile(new Murax(config)).doSimUntilVoid{dut =>
+    def config = MuraxConfig.default(withXip = false).copy(onChipRamSize = 4 kB, onChipRamHexFile = "src/main/ressource/hex/muraxDemo.hex")
+    val simSlowDown = false
+    SimConfig.allOptimisation.compile(new Murax(config)).doSimUntilVoid{dut =>
       val mainClkPeriod = (1e12/dut.config.coreFrequency.toDouble).toLong
       val jtagClkPeriod = mainClkPeriod*4
       val uartBaudRate = 115200